Journal articles on the topic 'Dump waste'
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1
Shwetmala, Kashyap, H. N. Chanakya, and T. V. Ramachandra. "Pattern, Characterization and Quantification of Unauthorized Waste Dump Sites: A Case Study of Bangalore." Journal of Solid Waste Technology and Management 47, no. 2 (May 1, 2021): 362–70. http://dx.doi.org/10.5276/jswtm/2021.362.
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Developing country municipal solid waste management is complex, managed by multiple institutions, prone to socio-political disruptions and often requires frequent and rapid estimates of good functioning. Estimating the quantity, composition and status of municipal solid waste found at unauthorized dump sites helps in diagnosis and in improving solid waste management system. The objective of this study was to find occurrences of unauthorized dump sites and to determine quantity, area, height of dumps, waste density and waste composition at these sites. A total of 452 locations were identified and quantification of solid wastes was carried out at 268 locations by determining waste spread area, measuring dump height and density by multiple techniques. Mixed dumped wastes at site was physically segregated into twelve waste categories (organic fraction, plastic, construction debris, paper, cloth, glass, leather, metal, rubber, biomedical waste, burnt waste and industrial wastes). It was estimated about 213310 Mg of wastes were dumped in 452 unauthorized dump sites. The composition of waste dumped in unauthorized sites have 41.3% of construction debris followed by 28.9% of organic waste and other fractions constituted the remaining. The waste composition at dump site suggests less efficient recycling systems and the possible direction for the system improvements.
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Falaciński, Paweł. "Possible applications of hardening slurries with fluidal ashes in environment protection structures." Archives of Environmental Protection 38, no. 3 (November 1, 2012): 91–104. http://dx.doi.org/10.2478/v10265-012-0031-7.
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Abstract This article presents ways of possible utilization and application of fl uidal combustion wastes as active additives to hardening slurries which are used to seal environment protection structures, i.e. cut-off walls in waste dumps and wastewater treatment plants. Cut-off walls are often exposed to fi ltrating action of eluates - polluted (aggressive) waters. Results of hydraulic conductivity tests of slurries after their long-term (210 days) fi ltration with eluates from a municipal waste dump and with tap water are presented. Porosity tests were also conducted to show the porosity structure of the fi ltered slurries. Additionally, compressive strength of slurries maturing in tap water and waste dump eluates was tested in parallel.
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Vojtková, H., and I. Janáková. "Research of waste dump water mutagenicity of bacterial detection system SOS chromotest." Water Science and Technology 63, no. 12 (June 1, 2011): 2833–37. http://dx.doi.org/10.2166/wst.2011.503.
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The paper deals with a possible use of the bacterial detection system of SOS chromotest to test mutagenicity of waste dump water checking the mutagenicity degree on real samples from Praksice waste dump, which is a controlled waste dump with mixed industrial, municipal and inert wastes. The waste dump surface water samples were taken from a no-name influent stream springing below the waste dump body between 2005 and 2009. After metabolic activation by microsomal fraction in vitro, medium to high mutagenicity was registered in all the samples. The SOS chromotest is assessed as an effective and economically acceptable method to check and determine the mutagenicity degree of contaminated water.
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WASILEWSKI, STANISŁAW, and PRZEMYSŁAW SKOTNICZNY. "Mining waste dumps – modern monitoring of thermal and gas activities." Gospodarka Surowcami Mineralnymi 31, no. 1 (March 1, 2015): 155–82. http://dx.doi.org/10.1515/gospo-2015-0010.
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Abstract Mining waste dumps are permanently incorporated in the landscape of the mining areas and exert an impact on the environment in many ways. The presence in the massif of a dump of carbonaceous substances often leads to the formation of fire hazards. Monitoring the activity of a newly created coal waste dump or of one under fire plays an extremely important role in fire prevention activity. Under the current regulations it must be carried out both during the exploitation process and for many years afterwards. Monitoring a dump is targeted, among others, at detecting thermal and gas anomalies already at the initial stage of development and to undertake preventive measures to eliminate and minimize the impact and load of a dump for the environment and the health and life of humans. In the article selected results of a research project (Raport 2011) are shown; a method of monitoring fire hazards at dump wastes was proposed, which includes thermal scanning and thermal-gas monitoring by a borehole method aimed at fixed points in the dump. Monitoring the large area of a dump requires exploration of the thermal state of a significant area hence the accepted scanning of the area is with a precision thermal imaging camera during an air raid. Then at selected sites of the dump, long-term in-field studies were conducted using the wireless data collection system from scattered test holes, made of perforated pipes and equipped with temperature and gas probes (CO, CO2, O2). At the same time the changes of environmental conditions and changes in atmospheric state parameters were observed around the dump, the so-called wind rose, based on data recorded by the weather station.
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BRYK, Dmytro, Oleg GVOZDEVYCH, Lesya KULCHYTSKA-ZHYHAYLO, and Myroslav PODOLSKYY. "Technogenic carbonaceous objects of the Chervonohrad mining and industrial district and some technical solutions for their using." Geology and Geochemistry of Combustible Minerals 4, no. 181 (December 27, 2019): 45–65. http://dx.doi.org/10.15407/ggcm2019.04.045.
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Ukraine has significant coal resources. Chervonohrad Mining and Industrial District is the main coal complex in the west of Ukraine. In recent years, the average annual coal production in the mines of Chervonohrad Mining and Industrial District has amounted to 1.5 bn t, coal ash varies over a wide range of 25 to 53 %, average coal ash content of about 40 %. Coal mining has produced millions of tons of coal waste every year. Concentration of technogeneous coal objects (mines, mining infrastructure, coal-mining waste dumps and wastes of coal enrichment) in a relatively small area has caused environmental degradation. Therefore, technological and environmental aspects of carbon-containing technogenic objects are particularly important and actual. Coal-waste dumps in the territory of Chervonohrad Mining and Industrial District are characterized in detail. The dumps cover different areas – from 9–10 to 29–30 ha, the height of the dumps reaches 62 m at the mostly heights of 25–40 m. The total waste deposit in the dumps of existing mines has a volume of more than 20 million m3. The coal wastes from Mezhyrichanskaya mine coal-waste dump was investigated to determine the suitability for thermochemical processing. Technical characteristics of taken coal-waster samples is presented. The technogenic carbonaceous objects and the impact to the environment are evaluated. The developed and patented technical and technological solutions for the technogenic carbonaceous objects using are considered. It is shown that the concept of industrial development of coal wastes dumps is based on two aspects – extraction of valuable mineral components and energy utilization of carbonaceous wastes of coal production. Its patented as Patents of Ukraine technological schemes for terrestrial process in of solid carbonaceous raw material from dumps and sludges with the production of coal tar and synthesis gas CO + H2 are presented, as well as the scheme of a system for utilization of heat from coal dump. Recommendations for the implementation of innovative technologies are based on the results of the laboratory research. The purpose of the resolution is to obtain valuable components and energy from coal wasters while improving the environment.
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Plaza, Pablo Ignacio, and Sergio Agustin Lambertucci. "More massive but potentially less healthy: black vultures feeding in rubbish dumps differed in clinical and biochemical parameters with wild feeding birds." PeerJ 6 (April 19, 2018): e4645. http://dx.doi.org/10.7717/peerj.4645.
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Background Organic waste is one of the most important anthropogenic food subsidies used by different species. However, there is little information about the health impact that rubbish dumps produce on species foraging in these sites. Methods We studied the effect that rubbish dumps produce on the health of a scavenging bird from the Americas, the black vulture (Coragyps atratus). We sampled and studied clinical and biochemical parameters in 94 adult black vultures from two different sites in North Western Patagonia, a rubbish dump and the wild steppe. Results We found differences in clinical and biochemical parameters between sites. Body mass was greater in individuals from the dump, whereas in the steppe there were more individuals clinically dehydrated. Biochemical parameters such as uric acid, calcium, alkaline phosphatase, glycaemia, globulins and haematocrit had higher values in individuals using the dump than in individuals from the steppe. Other biochemical parameters such as aspartate aminotransferase, alanine aminotransferase, creatine phosphokinase and urea were higher in individuals from the steppe than in individuals from the dump. Discussion Foraging in organic waste could be considered beneficial for black vultures because they increase body mass and parameters associated to nutritional status like calcium and haematocrit. However, foraging in dumps can also affect their health status due to nutritional problems, potential kidney damage or infections that are signalled by the higher values of glycaemia, uric acid and globulins found in individuals from the dump. Our results highlight the contrasting effects that rubbish dumps may produce on wildlife health. They are relevant to different species using these sites, and are also an additional instrument for managing waste.
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Yang, Kai, Shu Ran Lv, and Chun Xue Wang. "Numerical Analysis of Safety on Waste-Dumping Cover-Slope out of the Tailings Dam." Applied Mechanics and Materials 501-504 (January 2014): 178–84. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.178.
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Mining companies intend to solve the problem of waste dump and reduce the production cost by dumping a large number of waste soils to cover slope outside the running tailings. Therefore, in order to discuss the safety of waste dump slope covering in front of the tailings dam, numerical method was adopted to study the seepage-line change law, the pore water pressure and anti-sliding safety before and after the waste dump covering out of tailings dam. The researches show that the key to waste-dump slope safety are the drainage performance of waste dump bottom layer and the anti-sliding safety of waste dump soil. The appropriate waste dump slope work can improves the tailings dams safety and solves the waste dump problem in mining production.
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Ozabor, F., and M. B. T. Kpang. "Weather Variability in the Vicinity of Waste Dump-Sites in Benin City." Environmental Management and Sustainable Development 7, no. 4 (September 12, 2018): 11. http://dx.doi.org/10.5296/emsd.v7i4.13636.
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This study examines the contribution of dump-sites to weather variability in Benin City. By utilizing the experimental research design, the researcher collected primary data for waste volumes, GHGs, and temperature across the study sites for a period of three months. Analysis of variance (ANOVA) and multiple linear regressions (MLR) were employed for data analysis. Findings revealed that highly populated areas such as, Iguomo (7.7%), Ekehuan (7.8%), GRA (6.8%) and New-Benin (9.2%) generated the greater proportion of waste in the area. The ANOVA analysis showed that temperature is significantly different as distance increase from dump site at P<0.05 indicating the influence of waste dumps on temperature in the area. Nevertheless, the MLR identified that temperature attained at the various dump sites significantly depended on the GHGs emitted at the sites at P<0.05. The study as a result of findings, advocates waste re-use & recycle; and establishment of waste treatment plants amongst others in the area.
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Suleman, H. A., and P. E. Baffoe. "Selecting Suitable Sites for Mine Waste Dumps Using GIS Techniques at Goldfields, Damang Mine." Ghana Mining Journal 17, no. 1 (June 30, 2017): 9–17. http://dx.doi.org/10.4314/gm.v17i1.2.
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AbstractThe selection of optimal sites for mine waste dumps is a significant problem associated with surface mines operations. A number of factors such as financial, environmental and safety requirements must be simultaneously considered to avoid potential losses. This research used the ModelBuilder tool and several GIS spatial analyst tools to select suitable sites for mine waste dump. The weighted overlay technique was adopted by first determining the necessary criteria and constraints and subsequently developing attributes for each criterion. The criteria used were grouped into a binary category of suitable and unsuitable. A total area of 17.01 km2 was determined as suitable, while 66.10 km2 was classified as unsuitable after overlaying and weighting all the criteria. Out of the suitable areas, an area of 13.62 km2 consisting of 21 sites were determined as optimal. Applying further constraints, 2 out of the 21 optimal sites were determined as the best sites. A step-wise model has been developed using ModelBuilder for selecting an economic but effective site for dumping mine waste using suitable constraints and criteria. This has facilitated the production of suitability maps generated from the various datasets being used for mine waste dump site selection. The final output map that best fits the criteria and constraints can be used by decision makers to set out the areas suitable for mine waste dump sites on the mine concession. The model could be applied as the standard model for selecting sites for mine waste dumps, since there is no standard model available at the moment. Keywords: ModelBuilder, GIS, Constraints, Waste Dumps, Weighted Overlay
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Feng, Shao Jie, Yan Fei Dong, Shi Guo Sun, and Sheng Lei Kan. "Study of Numerical Simulation in Failure Modes of Waste Dump Slope." Advanced Materials Research 1092-1093 (March 2015): 748–52. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.748.
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Based on the numerical simulation method and a sample slope engineer of waste dump, the failure modes of waste dump slope is analyzed. By means of analyzing working conditions such as different slope angles, single step, many steps, the failure modes of waste dump slope under different working conditions is obtained. The results show that the slope stability of multiple steps waste dump is better than the slope stability of single step waste dump, and the deformation of the slope is small.
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Adamczyk, Justyna, Marek Cała, Jerzy Flisiak, Malwina Kolano, and Michał Kowalski. "SLOPE STABILITY ANALYSIS OF WASTE DUMP IN SANDSTONE OPEN PIT OSIELEC." Studia Geotechnica et Mechanica 35, no. 1 (March 1, 2013): 3–17. http://dx.doi.org/10.2478/sgem-2013-0001.
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Abstract This paper presents the slope stability analysis for the current as well as projected (final) geometry of waste dump Sandstone Open Pit “Osielec”. For the stability analysis six sections were selected. Then, the final geometry of the waste dump was designed and the stability analysis was conducted. On the basis of the analysis results the opportunities to improve the stability of the object were identified. The next issue addressed in the paper was to determine the proportion of the mixture containing mining and processing wastes, for which the waste dump remains stable. Stability calculations were carried out using Janbu method, which belongs to the limit equilibrium methods.
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Burlakovs, Juris, and Magnuss Vircavs. "Waste Dumps in Latvia: Former Landfilling, Consequences and Possible Recultivation." Chemistry Journal of Moldova 7, no. 1 (June 2012): 83–90. http://dx.doi.org/10.19261/cjm.2012.07(1).13.
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Particular attention in this article is paid to the research of two waste dumps in the capital city of Latvia – Riga, which are planned to be re-cultivated in the nearest future and one site, which is former toxic hazardous soil dump site, where the remediation of site is of priority need. The present study is giving a general overview of contamination level in two waste dumps in Riga, which were made in the period from 50-ties to 70-ties of the 20th century, also the case of hazardous soil dump site formed in a period of more than 100 years is described. Planned actions as well as direct remediational technologies to reduce the poisonous impact to the urban environment and the role of re-cultivation in the urban planning in general are proposed.
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Dołhańczuk-Śródka, Agnieszka, Łukasz Wróbel, Andrzej Kłos, and Maria Wacławek. "Assessment of Gamma Dose Rate at Mine Waste Dump." Ecological Chemistry and Engineering S 20, no. 3 (September 1, 2013): 555–65. http://dx.doi.org/10.2478/eces-2013-0031.
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Abstract Exploitation of coal deposits in Upper Silesia is associated with production of large quantities of waste deposited at dumps. The tested samples from five dumps showed different radioactivity from each other. Radioactivity measurements made it possible to analyze the degree of risk with the factors specified by UNSCEAR such as radium equivalent activity Raeq, internal Ein and external Eex occupancy factor. There is a raised level of radiation in dumps as compared with outside dump areas. In the study area, however, there is no risk associated with elevated levels of radiation in relation to standards established by the Council of Ministers of the ionizing radiation dose limits.
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Lord, E. R. F., and B. A. A. Isaac. "Geotechnical investigations of dredged overburden at the Syncrude oil sand mine in northern Alberta, Canada." Canadian Geotechnical Journal 26, no. 1 (February 1, 1989): 132–53. http://dx.doi.org/10.1139/t89-014.
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The feasibility of constructing a stable overburden waste dump using hydraulic techniques has been investigated. A joint Alberta Oil Sands Technology and Research Authority - Syncrude field pilot resulted in a total of 25 000 m3 of overburden being dredged, hydraulically transported in lump form, and deposited in a number of study cells. The geotechnical properties of the deposits were tested in the field and laboratory. The results indicate that the potential exists to hydraulically construct waste dumps with Pleistocene materials. Clearwater Formation clay shale can also be hydraulically transported in lump form but the resulting deposit requires containment. Key words: dredging, overburden, clay lumps, geotechnical testing, case histories, waste dump.
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Zou, Ping, Ximo Zhao, Zhonghua Meng, Aibing Li, Zhengyu Liu, and Wanjie Hu. "Sample Rocks Tests and Slope Stability Analysis of a Mine Waste Dump." Advances in Civil Engineering 2018 (December 27, 2018): 1–17. http://dx.doi.org/10.1155/2018/6835709.
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The safety and stability of waste dump are vital influencing factors to the mine sustainability and mine employees. Based on a real mine project in a certain open-pit mine waste dump in Tibet, the in situ test on waste rocks from waste dump, including measurements of density, water content, rock size, and natural repose angle, was conducted. Afterwards, these sample waste rocks, of which grain size is less than 5 cm, were selected for indoor large-scale shear test under natural and saturated conditions. By using some engineering methods, the physical and mechanical parameters of waste rocks layer were then determined accordingly. MIDAS-GTS/NX has the advantage of pre-processing modeling. FLAC3D has good computational and analytical capabilities. The process of dump accumulation is simulated numerically. According to the calculation results of FLAC3D, the distribution of stress, displacement and plastic zone in the dump is obtained. FOS (factor of safety) for each analytical step in this model was then calculated through the strength reduction method. The limit equilibrium method is used for waste dump stability analysis considering three states: only applied gravity, applied gravity and rainfall, and applied gravity and underground water. The results from this analysis show that the waste dump is stable. The potential failure modes of waste dump mainly consist of the “combined sliding mode” which has circular sliding in upper side and broken line sliding that cuts through gravel-soil layer into heavily weathered layer in the bottom. This paper documents some of the procedures and approaches utilized for waste dump life-of-mine design analysis. It provides reference for further waste dump optimization.
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Zhigang, Tao, Zhu Chun, Wang Yong, Wang Jiamin, He Manchao, and Zhang Bo. "Research on Stability of an Open-Pit Mine Dump with Fiber Optic Monitoring." Geofluids 2018 (October 30, 2018): 1–20. http://dx.doi.org/10.1155/2018/9631706.
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China has over 1500 open-pit mines and 5000 dumps consisting of waste rock from the mining process. Due to dump instability in an open-pit mine and its diverse foundations, landslides and mudslides frequently occur. Heaped loose waste rock and concentrated heavy rainfalls are the two important factors affecting slope stability of a dump. Using the high Dump II within the Nanfen Open-Pit Iron Mine with a slope height of 300 m as a case study, this paper first proposes a physical model similarity ratio according to the on-site engineering geological survey data. The governing principles of deformation in the shallow dump layers in terms of different heaped loads and rainfall were then determined using fiber optic sensing to conduct an experimental study on the monitoring of the dump stability with an indoor physical model. Experimental results confirm that the amount of rainfall and heaped load has a great impact on the landslide in a dump. With an increase in the amount of material heaped onto the pile, the place between two heaped load points is squeezed and slowly deformed. As rainfall begins, the deformation of the rock-soil mass is significant, and constantly increasing rainfall intensity is accompanied by a dangerous sliding surface. Finally, the FLAC3D method was used to simulate the deformation features in the shallow part of Dump II under different heaped load conditions and verify the experimental results of the indoor physical model. By comparing the physical model experiments and numerical simulation results, we propose monitoring the stability of Dump II using this fiber optic sensing technology and provide the scientific basis for stability monitoring of similar dumps to detect the early warning signs of mudslides or landslides.
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Xu, Yi Wei. "Slope Protection with Vegetation for Waste Dump at Guangyue Road in Shanghai." Advanced Materials Research 594-597 (November 2012): 465–71. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.465.
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The Waste Dump at Guangyue Road in Hongkou district locates in the center of Shanghai and became a success stories for it being transformed Waste Dump into a resort. However, slight landslide on the Waste Dump occurs frequently whenever the typhoon and dramatic storm happened in recent years. Meanwhile the slope protection with vegetation is becoming the most common, efficient and most practical way for conserving water and soil and keeping slope stable. This article descripts the mechanism of slope protection with vegetation and analyses the actual situation of the Waste Dump at Guangyue Road and discusses how to reasonably apply the mechanism of slope protection with vegetation into ameliorating the landslide situation on the Waste Dump.
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Saik, Pavlo. "Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump." Advanced Engineering Forum 25 (November 2017): 128–35. http://dx.doi.org/10.4028/www.scientific.net/aef.25.128.
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The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed. A number of available ways for using the sources of waste heat of mining enterprises, namely: outlet ventilation flow, mine water and other rock waste dumps, are investigated. The technological scheme of heat recovery from rock waste dump using heat pumps, which are component segments of the heat pump geosystem on the basis of borehole underground coal gasification, is developed.
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Buravchuk, N. I., and O. V. Guryanova. "Research and Application of Materials from Burnt Breeds of Mine Dumps for Producing Mineral Origin Fillers." Ecology and Industry of Russia 24, no. 10 (October 14, 2020): 26–32. http://dx.doi.org/10.18412/1816-0395-2020-10-26-32.
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Researches of burnt rocks of mine dumps of some mines of the Rostov region are carried out. The technological scheme of the existing complex for processing the rocks of the mine dump is considered. The quality indicators of crushed stone of various fractions and screenings of crushing from burnt rocks are given. The benefits of these placeholders are noted. Such aggregates are primarily suitable for road construction. Disposal of mine dump rocks will allow replenishing the construction industry with new building materials, freeing land from dumps, and improving the environmental situation in the waste disposal areas.
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Ciesielczuk, Justyna, Andrzej Czylok, Monika J. Fabiańska, and Magdalena Misz-Kennan. "Plant occurrence on burning coal waste – a case study from the Katowice-Wełnowiec dump, Poland." Environmental & Socio-economic Studies 3, no. 2 (June 1, 2015): 1–10. http://dx.doi.org/10.1515/environ-2015-0057.
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AbstractCoal-waste dumps superimposed on former rubbish dump frequently undergo selfheating and selfignition of organic matter dispersed in the waste. The special conditions for plant growth generated as a result have been investigated since 2008 on the municipal dump reclaimed with coal wastes in Katowice-Wełnowiec, Poland. The plants observed most frequently where heating has occurred are Sisymbrium loeselii, Artemisia vulgaris, Sonchus arvensis, Chenopodium album, Achillea millefolium, Cirsium arvense, Amaranthus retroflexus, Atriplex nitens and Solanum nigrum. Some new, rare species such as Portulaca oleracea, first noticed in 2011, may be added. Most of encroaching species are annual, alien archeophytes and neophytes. Native species are mainly perennials. The majority of these species show a tendency to form specimens of huge size (gigantism). The abundance of emitted CO2 and nitrogen compounds is the likely cause of this. Additionally, the plants growing there are not attacked by insects. The heating of the ground liquidates the natural seed bank. After cooling, these places are seeded by species providing seeds at that very moment (pioneer species). Heated places on the dumps allow plant growth even in the middle of winter. As the seasonal vegetation cycle is disturbed, plants may be found seeding, blooming and fruiting at the same time.
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Atamanova, Olga V., Elena I. Tikhomirova, Alexey V. Koshelev, Anton V. Aleksashin, and Andrey L. Podolsky. "Method of transforming unauthorized dump into municipal solid waste landfill." E3S Web of Conferences 161 (2020): 01071. http://dx.doi.org/10.1051/e3sconf/202016101071.
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We resolved the issue of eliminating unauthorized dumps of municipal solid waste (MSW). The MSW placement problem attracts special attention of the urban residents in the Russian Federation. However, the number of unauthorized MSW dumps in our country continues to increase. The accumulation of municipal waste in certain localities of urbanized centers, as well as in unauthorized dumps near residential areas is a serious problem for the environment and human health. MSW decomposition products lead to chemical, physical, and biological pollution of the lithosphere, hydrosphere and atmosphere. It is difficult to eliminate unauthorized dumps of municipal solid waste, since it is virtually impossible to have advance knowledge about the places of their formation. The objects of our investigation were MSW dumps. We conducted laboratory studies on the composition of wastewaters from the areas of unauthorized dumps within Saratov region, and discovered that precipitation-generated runoff from unauthorized dumps contained manifold excesses of toxic pollutants (heavy metals, organic matter, etc.). We proposed an original method for converting unauthorized dumps of solid household waste into the MSW landfills. The method includes two components: vertical planning of previously formed dump volume and annular surrounding drainage of the open type. The drainage ditch is connected to the water-collecting well, which is linked to the water storage tank joined, in its turn, to the water treatment plant.
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Xie, Zhen Hua, Ting Ting Luan, and Na He. "Safety Evaluation Technology for Waste Dump Landslide of Open-Pit Mine Based on Fuzzy Mathematics." Applied Mechanics and Materials 353-356 (August 2013): 2245–50. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2245.
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In recent years, frequent waste dump landslides brought the huge losses. Now, there is no mature theory system about the research on waste dump stability, this paper puts forward a disaster evaluation method for waste dump landslide which bases on fuzzy mathematics principle, the evaluation method is convenient and practical. Firstly, we established evaluation indicator system on the basis of analyzing landslide influence factors; first grade evaluation indicators included engineering geology, hydrogeology, dumping process and other factors; second grade evaluation indicators included geotechnical properties, foundation soft rock, foundation slope, atmospheric precipitation, underground drainage, drainage facilities, dumping way, dumping order, propulsion speed, mining disorderly, blasting vibration and force majeure. Secondly, we used analytic hierarchy process (AHP) to determine the indicator weight. At last, combining with the actual situation of some waste dump and using fuzzy mathematical theory, we had the safety evaluation to waste dump landslides, the result is in good agreement with the actual situation and shows that the method is a scientific guidance to the safety management of the waste dump.
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Gupta, Anup, and Biswajit Paul. "Augmenting the Stability of OB Dump by Using Fly Ash: A Geo Technical Approach to Sustainably Manage OB Dump at Jharia Coalfield, India." Current World Environment 11, no. 1 (April 25, 2016): 204–11. http://dx.doi.org/10.12944/cwe.11.1.25.
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This paper is mainly focused over the possible utilization of fly ash along with OB dump to enhance the stability of OB dump and thus provide a sustainable approach for better waste management of both these materials simultaneously. Instability of coal mine overburden (OB) dumps is an important problem in most of the coal mines like Jharia coalfields in India. This is mainly occurring due to sliding nature of the rock material, lack of vegetation etc. Numbers of Environmental and health issues are associated with these unstable OB dumps. As it may easily flow with running water can contaminate the nearby water resource as well as carbonaceous content of the dump causes air pollution due to simultaneous combustion. On the other hand management of coal ash that is produced from thermal plants is also an important task. Dumping of fly ash in open may cause number of environmental problems.Various geotechnical and physical parameters such as particle size analysis, specific gravity, density, and friction angle/cohesion test have been performed to check the stability of OB dump and to analyze impacts of fly ash utilization to stabilize the OB dump.
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Zhao, Xin Tao, Xin Chun Gao, and Dong Sheng Li. "The Stability Analysis of Nantong Coal Mine Waste Dump, Chongqing and Prevention Measures." Applied Mechanics and Materials 204-208 (October 2012): 3526–31. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3526.
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Coal mine waste dump often occur landslide and collapse disasters, the prevention measures and stability analysis of the waste dump must be studied.Firstly,the major factors that can cause landslide in Nantong coal mine waste dump,Chongqing were analyzed,secondly,the stability of four geological cross sections were analyzed by the limiting equilibrium method and FLAC numerical simulation method,the conclusions from two methods are same,and the conclusion is the safety factors of cross sections A and C are smallest and landslide and debris flow disasters will occur easily when face with a long heavy rainfall.thirdly, according to the main factors that can cause waste dump landslide easily and combine with the analysis results of limit equilibrium method and discrete element numerical simulation seven prevention measures were proposed, these measures can provide references for similar waste dump.
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Permana, Dudi, Dian Primanita Oktasari, Winda Widyanty, and Noermijati Noermijati. "DISSEMINATION OF WASTE DANGERS TO ENVIRONMENTAL HEALTH IN ANGGADITA VILLAGE." ICCD 2, no. 1 (November 27, 2019): 212–15. http://dx.doi.org/10.33068/iccd.vol2.iss1.208.
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The danger of rubbish dump on health is an important thing for residents who live around the Citarum watershed, especially Anggadita Village. In this Community Service, it provides an understanding of the dangers of rubbish dump for health and how to maintain health in the surrounding environment. Barriers are still being experienced from the existence of the community to be caring and aware to maintain health and not to hoard or litter. How to overcome problems that occur in the partner community as described, the Community Partnership Program offers several methods of approach that can help in solving existing problems, Dissemination of the danger of waste dumps on environmental health, Dissemination of ways to protect environmental health, Dissemination of ways to protect environmental health and Assistance to the trainees.
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Zhixun, Lin. "Leachate chemistry and precipitates mineralogy of rudolfsgruvan mine waste rock dump in central Sweden." Water Science and Technology 33, no. 6 (March 1, 1996): 163–71. http://dx.doi.org/10.2166/wst.1996.0093.
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The chemical and mineralogical properties of leachates and precipitates formed in a sulfide ore mine waste rock dump were studied by atomic adsorption spectrometry, optical petrography, X-ray diffractometry, scanning electron microscopy with energy dispersive spectroscopy. The dump is divided into a leached horizon and an accumulation horizon. The intensity of sulfide oxidation decreases with depth. Leachates are characterized by acid and enriching Fe, SO4 and other metals. Secondary minerals consist mainly of goethite, with some jarosite, schwertmannite ferrihydrite elemental sulphur and Cu and Zn compounds including copper iron oxides, Cu and Zn oxides (hydroxides) and Zn-sulfates. Dissolved Al, Cu, Zn, Si and S are partialy retained by goethite, precipitating in a microbanded texture. The banded formation indicates temporal variability in pore water chemistry influenced by episodic/seasonal hydraulic flushing. The dump is rather old and could provide an important information, or “natural analogue” to the future evolution of the rock dumps that are being generated at currently operating mines.
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Gontaszewska, Agnieszka, and Andrezej Krainski. "INFLUENCE OF WASTE DUMP “CHROBRÓW” IN POLAND ON GROUND - AND SURFACE WATER." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 18, 2005): 179. http://dx.doi.org/10.17770/etr2005vol1.2127.
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In paper an influence of waste dump “Chrobrów” on groundwater and tributary of the Bóbr river was described. This waste dump was installed in former gravel excavation. For first 10 years it had no leak stopper and sewage water could freely infiltrate. Geological structure of the waste dump subsoil is unfavourable because garbage are directly stored on gravels with high filtration coefficient which make migration of pollutants easy. At the moment the waste dump has a leak stopper made from bentonite composite but there are still polluted groundsunderneath. In this paper was analyzed data about ground- and surface water quality from years 1994 – 2004. It was found that the quality of groundwater deteriorated, especially in years 1999 and 2002. The most worsening was noted in case of chlorides, ammonia nitrogen, sodium and potassium. Unfortunately there is no data before 1994 so there is no information about hydrogeochemical background. Increased values of all groundwater components infirst period of investigation are results of exploitation in years 1984 – 1994, when waste dump had no leak stopper.But later deterioration of groundwater quality can not be explained in this way. It should be drawn a conclusion that the seal of waste dump bottom does not work correctly. It was found that there is no negative impact of waste dump on surface water what is caused by absence of hydraulic contact between river and groundwater on investigated area.
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Lyashenko, V. I., V. I. Golik, and V. Z. Dyatchin. "Increasing environmental safety by reducing technogenic load in mining regions." Izvestiya. Ferrous Metallurgy 63, no. 7 (October 5, 2020): 529–38. http://dx.doi.org/10.17073/0368-0797-2020-7-529-538.
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One of the most problematic points in technology for storing ore enrichment waste materials with hardener admixture into underground mined space and tailing dumps are the tailings of hydrometallurgical plant (HMP). They are supplied through a slurry pipeline to the tailing dump in form of pulp with solid to liquid mass ratio of 1:2. Liquid phase of the pulp after gravity separation and clarification in tailing dump is returned to technological cycle of HMP. Storage technology under consideration has several disadvantages: high nonrecurrent capital costs for construction of tailing dump at full design capacity; high probability of harmful chemicals migration into groundwater if protective shields of the base or sides of tailings are damaged. The authors have used data from literature and patent documentation considering storage parameters, laboratory and production experiments, physical modeling and selection of compositions of hardening mixtures. Analytical studies, comparative analysis of theoretical and practical results by standard and new methods were performed. Possibility of using hardening mixtures with adjacent production wastes used as binders was established. Optimal composition of ingredients per 1 m3 of hardening mixture is proposed as follows: 1350 – 1500 kg of HMP tailings; 50 - 70 kg of binder (cement); 350 liters of mixing water. Proposed technology of ore enrichment waste storage into underground mined space and tailings with hardener admixture application allows using underground mined space at the enterprise production capacity of 1,500 thousand tons per year to store 50 – 55 % of tailings, and store the rest wastes cemented by binding material in repository. When filling the entire area of the tailing dump mirror of 10 m height with cemented tails and HMP capacity of up to 1.5 million tons per year, its operation life is extended by 50 years.
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Ren, He, Yanling Zhao, Wu Xiao, Xin Wang, and Tao Sui. "An Improved Ground Control Point Configuration for Digital Surface Model Construction in a Coal Waste Dump Using an Unmanned Aerial Vehicle System." Remote Sensing 12, no. 10 (May 19, 2020): 1623. http://dx.doi.org/10.3390/rs12101623.
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Coal production in opencast mining generates substantial waste materials, which are typically delivered to an on-site waste dump. As a large artificial loose pile, such dumps have a special multi-berm structure accompanied by some security issues due to wind and water erosion. Highly accurate digital surface models (DSMs) provide the basic information for detection and analysis of elevation change. Low-cost unmanned aerial vehicle systems (UAS) equipped with a digital camera have become a useful tool for DSM reconstruction. To achieve high-quality UAS products, consideration of the number and configuration of ground control points (GCPs) is required. Although increasing of GCPs will improve the accuracy of UAS products, the workload of placing GCPs is difficult and laborious, especially in a multi-berm structure such as a waste dump. Thus, the aim of this study is to propose an improved GCPs configuration to generate accurate DSMs of a waste dump to obtain accurate elevation information, with less time and fewer resources. The results of this study suggest that: (1) the vertical accuracy of DSMs is affected by the number of GCPs and their configuration. (2) Under a set number of GCPs, a difference of accuracy is obtained when the GCPs are located on different berms. (3) For the same number of GCPs, the type 4 (GCPs located on the 1st and 4th berms) in the study is the best configuration for higher vertical accuracy compared with other types. The principal objective of this study provides an effective GCP configuration for DSM construction of coal waste dumps with four berms, and also a reference for engineering piles using multiple berms.
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Teixeira, Marcílio Baltazar, Christianne de Lyra Nogueira, and Waldyr Lopes de Oliveira Filho. "Numerical simulation of hillside mine waste dump construction." Rem: Revista Escola de Minas 65, no. 4 (December 2012): 553–59. http://dx.doi.org/10.1590/s0370-44672012000400018.
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In activities involving disposal of mine waste in a dump, it is necessary to carry out a preliminary study of the mechanical behavior of both dump and the foundation materials. Due to the complexity of this problem, numerical techniques are essential for providing an approximate answer to the problem. Thus, the finite element method (FEM) was used to evaluate the stress-strain-strength behavior of a hillside waste dump built on a deformable foundation by the ascending method; the results of which are herein presented. The dump material is considered to be Morh-Coulomb nonlinear elastic perfectly plastic while the foundation material is considered to be linear elastic. The numerical simulation of mine waste dump construction is carried out by the "gravity turn on" technique and the dynamic mesh procedure. Different geometric configurations are analyzed and it is concluded that some requirements established by law should be reviewed and refined.
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Hicham, Lekehal, Bouchelta Aziz, Benzougagh Brahim, and Mimich Khalid. "Lixiviats Issus De La Décharge Publique De La Ville De Meknès: Calcul Et Résultat Du Bilan Hydrique." European Scientific Journal, ESJ 12, no. 29 (October 31, 2016): 242. http://dx.doi.org/10.19044/esj.2016.v12n29p242.
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The leachate issued from the garbage dumps of the city of Meknes represents a great environmental threat as they are neither recovered nor treated before their discharge into the natural environment, thus constituting an important source of pollution to the water of the Boufekrane’s river and neighboring agricultural land to the dump. Thus is the need to quantify the rate of this type of effluent: in order to offer technical and economic solutions to its treatment or disposal. The amount of waste arriving at the dump is estimated to 554 tons per day in 2015 with 40% average moisture content and a loss of water in the percolate from 5 to 10%, thus the amount of water supplied by the waste is estimated at 88.8 m3 per day. The volume of runoff water from the inside of the dump to the outside is estimated to be 38 m3 per day while the volume from outside to inside is null or negligible given the topography. The infiltration in soil is negligible because the floor of the dump consists of lithological marl Miocene formations, rendering the dump waterproof. The area, consisting of 17 hectares, receives an effective average rainfall of 475 mm / year, producing a volume of 80750 m3 / year, equivalent to 221 m3 / day. The total volume of leachate is about 271 m3 per day.
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OLUWOLE, Ebenezer Adegboyega, Hamza ATTAHIRU, Olorunfemi Boye OYEDIRAN, Stephen Kayode OMOTUGBA, Patience Ndidi MEDUNA, and Gbemiga Thaddaeus KOLAWOLE. "Assessment of Waste Management System Among Hotels and Guest Houses in Minna." Journal of Environmental Management and Tourism 11, no. 7 (November 30, 2020): 1609. http://dx.doi.org/10.14505//jemt.v11.7(47).02.
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The production and management of waste has become an important point of interest for hoteliers and their managers globally due to its environmental impacts. In the bid to become more sustainable or environmentally responsible, hotels and guest houses are going green. Thus, this study examines waste management system adopted lodging facilities in Minna, Niger State. Data collection was performed using questionnaire administered to managers of 26 sampled lodging facilities. Result revealed that three units (rooms, kitchen and store/wharehouse) out of the nine units examined produce the highest volume of wastes As plastic, paper, organic, and water wastes are topmost in the categories of wastes produce, while large percentage of the wastes are either burnt, landfill, or dump in the water ways or municipal dump site without seperation. The findings will help foster a new paradigm shift to mitigate the environmental impact of the waste produced by accomoodation outfits.
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van der Schroeff, J. A. "Rehabilitation of a Waste Dump Site." Water Science and Technology 17, no. 8 (August 1, 1985): 1399–402. http://dx.doi.org/10.2166/wst.1985.0043.
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Monastersky, R. "More Questions Plague Nuclear Waste Dump." Science News 135, no. 25 (June 24, 1989): 389. http://dx.doi.org/10.2307/3973353.
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Monastersky, R. "First Nuclear Waste Dump Finally Ready." Science News 140, no. 15 (October 12, 1991): 228. http://dx.doi.org/10.2307/3976013.
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Walgate, Robert. "Nuclear waste: Dump it here, please." Nature 314, no. 6010 (April 1985): 396. http://dx.doi.org/10.1038/314396a0.
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Ifeanyi, Ukwuaba Samuel. "Performance Evaluation of Biogas Yields Potential from Co-Digestion of Water Hyacinth and Kitchen Waste." European Journal of Engineering Research and Science 3, no. 4 (April 20, 2018): 36. http://dx.doi.org/10.24018/ejers.2018.3.4.684.
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Solid wastes are generated and dump indiscriminately in Nigeria due to poor implementation of standards, thus causing environmental and public health hazards. Nigeria generates more than 32 million tons of solid waste annually, out of which only 20-30% is collected and disposed in an open dump site. Different researchers have reported that organic waste fraction of solid waste generated in Nigeria has the highest percentage which is over 50%. However, this fraction of organic waste is yet to be properly utilized for biogas production. This research work is focused on the performance evaluation of biogas potential yields from co-digestion of kitchen wastes and water hyacinth. A 0.030m3 anaerobic mild steel digester was fabricated and used to digest the composition of water hyacinth and kitchen wastes. The experiment was conducted under mesophilic temperature range and a pH range of 6.0-7.4. The results obtained show that a cumulative biogas yield of 0.0499m3 was obtained from 30kg of substrates composition of kitchen waste and water hyacinth. Besides, optimum biogas yields were obtained at optimum mesophilic temperature.
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Kotwica, Łukasz, Wojciech Wons, Grzegorz Malata, Paweł Murzyn, Aleksandra Jamrozik, and Andrzej Gonet. "Utilisation of drilling waste muds from drilling waste dump." AGH Drilling, Oil, Gas 32, no. 3 (2015): 623. http://dx.doi.org/10.7494/drill.2015.32.3.623.
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EFIMOV, V. I., G. V. STAS, T. V. KORCHAGINA, and D. O. PROKHOROV. "METHODOLOGICAL PRINCIPALS OF THE INTEGRATED ECOLOGICAL EVALUATING ENVIRONMENTAL INFLUENCE OF COAL MINE DAMPS." News of the Tula state university. Sciences of Earth 3, no. 1 (2020): 18–28. http://dx.doi.org/10.46689/2218-5194-2020-3-1-18-28.
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It is shown that throughout all geo-technological periods of the existence of coal mines, there is a negative impact of waste dumps on the atmosphere, water resources and soil. Theoretical propositions have been formulated, in accordance with which the migration of liquid pollutants into the soil laver and underlving rocks in the zone of action of the waste dump is described by a one-dimensional equation of convective diffusion, taking into account the kinetics of sorption of pollutants. It is recommended to model the air movement when flowing around the waste dumps by the O. Reynolds system of equations for the turbulent motion of a viscous fluid, using the finite volume methodfor the numerical solution. The numerical solution of the equations of motion of O. Reynolds makes it possible to visualize the picture of air flow in special zones and predict the dust and gas transport in the surface layer of the atmosphere. It is expedient to simulate the dust and gas transfer by the equation of convective-turbulent diffusion, setting the convective transfer rate according to the results of calculating the velocity fieldformed when flowing around the dump.
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Lewińska-Preis, Lucyna, Ewa Szram, Monika J. Fabiańska, Ádám Nádudvari, Magdalena Misz-Kennan, Anna Abramowicz, Łukasz Kruszewski, and Andrzej Kita. "Selected ions and major and trace elements as contaminants in coal-waste dump water from the Lower and Upper Silesian Coal Basins (Poland)." International Journal of Coal Science & Technology 8, no. 4 (April 30, 2021): 790–814. http://dx.doi.org/10.1007/s40789-021-00421-9.
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AbstractMany temporary and permanent reservoirs of water occur on or near coal-waste dumps in the Lower- and Upper Silesian Coal Basins (Poland). Little or nothing is known of the degree to which their water chemistry might reflect (i) reservoir type, i.e., whether permanent or temporary, (ii) level of coal-waste thermal activity, i.e., whether inactive or self-heating or burnt-out or (iii) region, i.e., whether the dumps are in Upper- or Lower Silesia. To provide some answers, concentrations of selected ions (NH4+, HCO3−, F−, Cl−, Br−, NO2−, NO3−, PO43−,SO42−) were determined by ion chromatography and of nineteen elements (Al, B, Ba, Ca, Cd, Cr, Cu, Fe, K, Li, Mg, Mn, Na, P, Pb, S, Si, Sr, Zn) by inductively coupled plasma mass spectrometry (ICP-MS). The data allow a number of the following observations. When permanent reservoirs are considered, there is a clear relationship between concentrations of ions and major and trace elements and dump thermal activity. The highest concentrations occur where the thermal activity is high as inorganic components are transformed into more water-soluble forms. As dump thermal activity shows a regional pattern, it follows also that elemental and ion concentrations in the dump waters show significant regional differences. In temporary reservoirs, concentrations of ions and major and trace elements are much lower and any correlations between components less significant than in the permanent reservoirs; these reservoirs exist for too short a time for any balance between coal waste- and water components to be established.
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Iyaloo, Samantha, Tahira Kootbodien, Nisha Naicker, Spo Kgalamono, Kerry S. Wilson, and David Rees. "Respiratory Health in a Community Living in Close Proximity to Gold Mine Waste Dumps, Johannesburg, South Africa." International Journal of Environmental Research and Public Health 17, no. 7 (March 26, 2020): 2240. http://dx.doi.org/10.3390/ijerph17072240.
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The effects on respiratory health in populations living close to silica-rich gold mine dumps are unknown. This pilot study related respiratory health and exposure to mine dump dust using two measures of exposure: exposure group, based on distance lived from the mine dump—high (n = 93) (home <500 m from a mine dump), moderate (n = 133) (500–1.5 km), and low (n = 84) (>15 km, control group); and cumulative exposure index (CEI) derived from exposure group and number of years of residence in each exposure group. Participants were interviewed about respiratory symptoms and had chest X-rays and spirometry. We adjusted for key respiratory confounders. No subject had radiological features of silicosis. The high relative to low exposure group had significantly elevated adjusted odds ratios (aORs) for upper respiratory symptoms (aOR: 2.76, 95% CI: 1.28–5.97), chest wheezing (aOR: 3.78; 95% CI: 1.60–8.96), and spirometry-diagnosed chronic obstructive pulmonary disease (COPD) (aOR: 8.17; 95%CI: 1.01–65.85). These findings were similar for the high relative to medium exposure group, but no significant associations were found for the medium versus low exposure group. Chronic bronchitis and tuberculosis risks did not differ significantly among groups. CEI and exposure group produced similar results. In conclusion, residents residing <500 m from mine dumps had elevated adverse respiratory health effects.
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Radžiūtė, Milda, and Audronė Matusevičiūtė. "PHYSICAL-CHEMICAL CHARACTERIZATION OF SOILS TREATED WITH SEWAGE SLUDGE COMPOST." Mokslas - Lietuvos ateitis 2, no. 5 (October 31, 2010): 87–92. http://dx.doi.org/10.3846/mla.2010.097.
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Sewage dump is the main organic waste component accumulating in water treatment companies, and therefore the utilization of dump remains a burning issue. Fertilization is the most popular and cheapest way of using sewage dump a part of which is intended for agriculture in most European countries for composting purposes. Sewage dump or its compost are suitable for fertilizing the upper layers of the soil in cases the concentration of heavy metals is not greater than sanitarian standards can tolerate. The examinations were carried out using different waste dump rates from Vilnius water treatment facility in willow (Salix viminalis) grown cultivated fields. The analysis of the soil was executed after one and two years following the fertilization process. The obtained results indicate that waste dump is a valuable organic fertilizer which contains small amounts of heavy metals. Separate heavy metals migrate from sewage sludge compost to plants differently. It was noted that the concentration of heavy metals in willows was greater (except for Pb and Cd) than that in the soil.
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Dawson, R. F., N. R. Morgenstern, and A. W. Stokes. "Liquefaction flowslides in Rocky Mountain coal mine waste dumps." Canadian Geotechnical Journal 35, no. 2 (April 1, 1998): 328–43. http://dx.doi.org/10.1139/t98-009.
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Over the past 25 years there have been a large number of long runout flowslides from Rocky Mountain coal mine waste dumps. The waste dumps are constructed as end-dumped fills with an angle of repose of 38°. Dump heights range between 100 and 400 m. The dumps are normally founded on mountain slopes that are covered with a thin veneer of granular colluvial and dense stony till materials. Conventional stability analyses carried out for these dumps using friction angles equal to the angle of repose for the waste rock and typical values ranging from 30 to 32° for the foundation materials indicate that many should be stable. The flowslides occur rapidly and display surprisingly long runouts of up to 2 km in some cases. Detailed studies of three of these events indicate that static collapse of saturated or nearly saturated sandy gravel layers within the dumps may be responsible for the initial failure and the generation of high pore pressures which result in high runout mobility.Key words: mine waste dumps, flowslide, static liquefaction, collapse mechanics.
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Vodoleev, A. S., О. S. Andreeva, М. A. Zakharova, and E. Е. Таrgaeva. "Rehabilitation of the man-caused disturbed territories of sinter production." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information, no. 8 (September 1, 2018): 82–98. http://dx.doi.org/10.32339/0135-5910-2018-8-82-98.
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Search for economical and available technologies, enabling to recreate the fertile layer at the dump surface of disturbed lands and involving the reclamated territories into the economic turnover is an actual task at the present. Reclamation is a base of lands rehabilitation. Reclamation includes a set of measures aimed at forming on the surface of industrial dumps a favorable root-inhabited layer by various ways with subsequent use of this area. Conservation is the fixation of the surface of the dumps by mechanical means or by gardening the surface of the dumps with a preliminary application of a minimum layer of soil, peat, mineral fertilizers, growth substances, unconventional soil improvers – sewage sludge (WWS). As a result of the work carried out on the surface of the iron ore enrichment waste of the enrichment of the Abagur agglomeration factory, techno-earth (technozems) were formed – artificial soils with a root-inhabited layer consisting of a mixture of WWS and tailing material. Reclamated areas have been created at iron ore beneficiation waste, which ensure erosion stability of the tailing dump surface and conservation of enrichment wastes. The chemical and agrochemical parameters of the technozems during two years of their development have changed. Some alkalinization of the medium and a sharp decrease in the amount of organic matter and all forms of nitrogen in the substrate of the root layer observed. Reclamated areas with the restored natural properties can be included in an ecological framework of the city and are used in the recreational purposes as one of the directions of rehabilitation of lands.
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Moreno, L. "Modelling of Contaminant Release from Mining Waste Deposits." Advanced Materials Research 20-21 (July 2007): 189–92. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.189.
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The release of contaminants from mining wastes containing sulphide minerals is addressed. The paper shows the application of a methodology, Performance Assessment (PA), to the long-term behaviour of waste deposits. The aim of the paper is to address the different processes that occur in deposits for mining waste. These processes are applied to one study case; drainage water from a waste rock dump at the Aitik mine in northern Sweden.
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Musina, V. R., I. V. Golovko, and S. Shermatova. "Type of crossing of coal waste dumps by geodynamical dangerous zones." Mining informational and analytical bulletin, no. 6-1 (May 20, 2020): 233–41. http://dx.doi.org/10.25018/0236-1493-2020-61-0-233-241.
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The paper develops the concept of the existence geodynamically dangerous zones in the earth’s crust. These zones affects to the safety of the state of engineering structures and mining operations. The concept of geodynamic zoning is used, according to which geodynamically dangerous zones occurs during the interaction of blocks of the earth’s crust of various hierarchical ranks. On the example of the East Donbass, the typification of the intersection of coal waste dumps with geodynamically dangerous zones is considered. The position of 34 burning and burnt out dumps located near the cities of Shakhty and Novoshakhtinsk, Rostov Region, their size R and the width of geodynamically dangerous zones r are taken in account. Based on the use of geodynamic zoning data, an analysis is made of the nature of the mutual arrangement of carbon rock dumps and the boundaries of blocks of the earth’s crust (geodynamically dangerous zones). It is found 4 types of intersection of the block boundaries and the body of the dumps. The intersection of the first type occurs when R> r and the location of the intersection site entirely under the dump. The intersection of the second type occurs when R <r and the location of the dump entirely in the geodynamically dangerous zone. The intersection of the third type occurs at any ratio of R and r, but the common area overlaps the geodynamically dangerous zone only partially (touch). In the fourth type of intersection, the set of common points R and r is empty (do not intersect). Typification can be used when choosing places for dumping and computer modeling of their thermal state.
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Wang, Ding, Chang Wu Liu, Yu Hang Xu, and Jie Bin Zhou. "Numerical Analysis on the Slope Stability of the Multi-Step Waste Rocks Dump with Retaining Wall." Advanced Materials Research 524-527 (May 2012): 626–31. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.626.
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In recent years, with the rapid development of highway, high-speed railway and other large cross-section tunnel engineering, a large number of waste rocks are piled up and induce various security issues which affect people's production and living environment seriously. The actual capacity of the LQS tunnel waste rocks dump has been far more than its design dimensions, and brings about a certain extent potential safety hazard to some expressway projects in Sichuan Province. Utilizing FLAC3D and its Mohr-Coulomb criterion establish 2D model, and analyzes displacements, and calculate its safety factor, estimate the slope stability and destructiveness of the waste rocks dump. The calculation results are coincide with the actual damage situation well. In order to improve the slope stability of LQS tunnel waste rocks dump, the influence degree of its wall height, moisture ratio, and slope ratio of safety factor will be analyzed, sequentially confirm the critical value of every factor, and find out the prominent factors. The numerical analysis on the slope stability of multi-step waste rocks dump with retaining wall will be the basis of similar sites.
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Chang, Lai Shan, Ting Yu Yang, and Hui Jing Deng. "Disaster Prediction and Preventive Measures of Constructing a Waste Dump on an Abandoned Tailing Pond." Applied Mechanics and Materials 405-408 (September 2013): 2427–30. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2427.
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According to analyzing geological condition and failure pattern of constructing a 100m high waste dump on QIANYU abandoned tailing pond , It has predicted what disasters would be to villages and industrial buildings around after the waste dump is constructed. It has also determined corresponding preventive measures.
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Olesiak, Sebastian. "Influence of the heterogeneity of a dump soil on the assessment of its selected properties." Studia Geotechnica et Mechanica 42, no. 3 (September 30, 2020): 263–75. http://dx.doi.org/10.2478/sgem-2020-0001.
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AbstractThis article concerns the assessment of selected physical and mechanical properties of a dump soil. The dump soil is a specific soil with a very heterogeneous internal structure. Next to each other, there may be lumps and crumbs of cohesive soils mixed with non-cohesive soils accompanied by a very diverse admixture of organic substance. In addition, the soil in the waste dump, in spatial terms, may significantly differ in consistency and density. This is the result of the process of forming a dump soil, which takes place in three stages: excavation, transport and dumping. A heterogeneous soil deposited within the waste dump is subject to further processes: consolidation, compaction and creeping. Changes occurring in the course of these processes have a significant impact on the development of the properties of the dump soil.Due to the large diversity of the tested soils, the results of their properties were divided into two groups, based on type and consistency of soil. This allows us to estimate the selected properties of the dump soil only on the basis of their macroscopic analysis.
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Makeeva, Natalia, and Olga Neverova. "The influence of soil microorganisms on heavy metal content in the substrate of waste rock dumps." BIO Web of Conferences 31 (2021): 00017. http://dx.doi.org/10.1051/bioconf/20213100017.
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The environmental effects of mining and its impact on natural resources are of a holistic nature. One of the modern methods employed for the remediation of technogenically disturbed soils is the application of microorganisms. This paper studies the impact made by soil microorganisms on the accumulation rate of heavy metals in the substrate of waste rock dumps in the process of soil reclamation. Suspensions of soil microorganisms (microorganisms utilising mineral nitrogen forms / MUMN; microorganisms decomposing silicates / MDS; microscopic fungi / MF) were applied to the rock dump surface. Separate groups as well as their combinations were applied. The heavy metal content analysis did not indicate a significant exceedance of the maximum allowable concentration limits (MACL) in the soil of the waste rock. The only metal whose content exceeded the maximum admissible concentration limits was nickel. It has found that the application of microorganisms influences the concentration of several heavy metals due to pH level changes of the rock dump soil.