Gotowe bibliografie tematyczne / Mining Geomechanics

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Gotowa bibliografia na temat „Mining Geomechanics”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Mining Geomechanics"

Popov, S. O., R. A. Timchenko i O. O. Yerina. "IRON ORE MINING GEOMECHANICAL PROBLEMS IN UKRAINE". ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, nr 49 (17.10.2017): 152–58. http://dx.doi.org/10.26906/znp.2017.49.836.

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The paper deals with problems in Ukrainian iron ore mining industry resulted from enterprises reaching deep levels of mining. There are also described main causes of hazardous situations due to geomechanical factors at such depths, dynamic forms of excessive rock pressure manifestations, and types of external factors affecting the state and behavior of load-bearing elements of mining and technological objects below the surface to enable mining operations. The paper provides recommendations on creating a specialized geomecanics support system for mining enterprises which is based on labour safety risk-management principles as well as it presents geomechanics tasks to be solved by the system.

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Sashourin, A. D., i V. V. Melnik. "Relationship between Geomechanics and Subsoil Use from the Perspective of the Legislative Definition of the Term 'Subsoil'". Mining Industry Journal (Gornay Promishlennost), nr 1S/2022 (16.03.2022): 100–104. http://dx.doi.org/10.30686/1609-9192-2022-1s-100-104.

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The article presents a historical overview of the development of Geomechanics as a science in the re-search school of the Institute of Mining of the Ural Branch of the Russian Academy of Sciences. A par-ticular attention is given to research into the stress-and-strain state of the rock mass and its changes in the course of operating the mining facilities, which plays a crucial role in securing the stability of struc-tures, mining safety, and prevention of major accidents. To ensure the safety of mining, a complex of research methods is used, including theoretical studies, physical and computer modeling, geophysical sensing of rock masses, ground-surface and satellite geodetic studies of the deformation processes. Geomechanical studies carried out at the Institute of Mining helped to gain new insights into the struc-ture of rock masses, variability of the stress-and-strain state, its mosaic structure as determined by the self-organization process within hierarchical block mass, to reveal the sources of emergencies and cat-astrophic events in mining. Current geomechanical research at the Institute is dedicated to the development of a scientific approach and execution of territory zoning using the criterion of technogenic and natural disasters in mining, studying regularities in the self-organization processes within the rock mass, development of technology to select favorable locations for hazardous and critical mining facili-ties. A special role is played by the prediction of possible changes in the stressandstrain state over time. The Geomechanics Department of the Institute of Mining uses field studies of the rock mass structure, geodetic studies of its mobility, remote sensing using satellite interferometry, and computer simulation of the properties and processes that take place within the rock mass.

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Nguyen, V. U. "Some fuzzy set applications in mining geomechanics". International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 22, nr 6 (grudzień 1985): 369–79. http://dx.doi.org/10.1016/0148-9062(85)90002-6.

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Aleksandr P., Gospodarikov, Morozov Konstantin V. i Revin Ilia E. "Analysis of the time series of seismic and deformation monitoring, obtained from closed works at the Kirovsky mine of JSC "Apatite"". International Journal of Engineering & Technology 9, nr 2 (1.07.2020): 568. http://dx.doi.org/10.14419/ijet.v9i2.29888.

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The article is devoted to the analysis of the time series, obtained from seismic and deformation monitoring from closed works of Kukisvumchorr deposit JSC "Apatite". The objective of this study is to develop a method for assessing the results of monitoring geomechanical processes in the rock mass on the example of the Kirov mine JSC "Apatit". As a result of closed works, rock masses are changing its natural state of stress. This article has consistently outlined the use of machine learning algorithms in applied problems of geomechanics and geoinformatics. By comparing the schedule of mining operations and seismic activity data with time series of deformations, it is possible to obtain a functional relationship that predicts the distribution of deformations in the rock massif. The results of a computational experiment illustrating the possibility and feasibility of using machine learning algorithms in solving geomechanics problems are presented.

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Kozyrev, Anatoliy A., i Victor I. Panin. "Development of geomechanic studies in the Mining Institute of the KSC RAS." Transaction Kola Science Centre 11, nr 6-2020 (25.12.2020): 30–44. http://dx.doi.org/10.37614/2307-5252.2020.6.19.003.

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The paper demonstrates the principal development stages of geomechanics as a basic Earth science and its role in providing safe and cost-efficient development of mineral deposits. The main achievements of geomechanics are determined by demands of mining-engineering practice and logic of scientific knowledge evolution and are shown in different publications.

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Miroshnikova, L. K., A. Yu Mezentsev, G. A. Kadyralieva i M. A. Perepelkin. "Experience of CAE Fidesys application in numerical geomechanical modelling of Zhdanovskoe deposit". Mining Industry Journal (Gornay Promishlennost), nr 6/2021 (15.01.2022): 94–98. http://dx.doi.org/10.30686/1609-9192-2021-6-94-98.

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The Zhdanovskoe copper-nickel sulfide ores deposit is located in the north-west of the Murmansk region and is a mineral raw material source for JSC «Kola MMC». The main mining method used is sublevel caving. In some areas, due to the complex shape of the ore bodies, the open stoping mining method is used which requires determining stable parameters of stopes and pillars. It is necessary to study the stress-strain state of the deposit to ensure safe mining conditions. One of the possible solutions is the modeling of the stress-strain state of rock mass using the finite element method, for example, CAE Fidesys, which is FEMbased software. The use of CAE Fidesys for solving geomechanics tasks allows creating models of individual excavation units to determine the stability of stopes and pillars, and large-scale models that include several ore bodies and areas of the host rock mass. The article considers solutions of both types of geomechanic tasks using CAE Fidesys for conditions of the Zhdanovskoe deposit.

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Gusat, Dorel, i Ioan Bud. "ROCK MECANICAL ASSPECTS SIMULATIONS IN THE FUTURE OPEN PIT DEVELOPMENT". Scientific Bulletin Series D : Mining, Mineral Processing, Non-Ferrous Metallurgy, Geology and Environmental Engineering 34, nr 1 (2020): 29–37. http://dx.doi.org/10.37193/sbsd.2020.1.04.

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The proposed mining in a Porphyry copper deposit appears primarily restricted by the geometry/geomechanics of the deposit and secondly by mining methods and technology. The geometry/geomechanics of one deposit can be divided into three sections including western block and middle and eastern block. The greatest width has so far been discovered in the an middle block; all available information indicates that this will not change when the pit/mine is deepened. Assuming more or less continuous conditions within the three blocks towards the northern (rock will be added in the model) and southern rock) neighboring rock the greatest depth of the pit (> 511 m depth) will be reached in the middle block.

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Sashourin, Anatoly, Andrey Panzhin, July Konovalova i Vladimir Ruchkin. "The role of modern geodynamic movements in the formation of geomechanical problems in subsoil use". E3S Web of Conferences 56 (2018): 02010. http://dx.doi.org/10.1051/e3sconf/20185602010.

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The paper describes the role of geomechanical processes and phenomena in the development and manifestation of hazardous situations in the development of mineral deposits, threatening the working personnel and the surrounding population. The studies of the Ural Scientific School of geomechanics functioning in the Institute of Mining of Ural Branch of RAS have established that the basis for the formation of hazardous geomechanical processes and phenomena are the fundamental properties of the rock mass - hierarchical blocking and constant mobility caused by the recent geodynamical movements. The constant mobility of hierarchical block medium of rock mass under the influence of trend and short-term recent geodynamical movements gives rise to the phenomenon of the secondary structuring. The recent geodynamical movements concentrate at the borders of the secondary structures and result in the deformations exceeding by 2 - 5 times the intrablock and integral deformations and representing the main source of the hazardous impact on the mining objects and on the surrounding population. The technology of the geological environment diagnostics for the forecast of hazardous mining situations is aimed at the identification of the boundary zones of secondary structures, the estimation of the hazard level of deformation processes and the adoption of proactive measures.

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Bondarenko, Volodymyr, Iryna Kovalevska, Hennadii Symanovych, Mykhailo Barabash i Ildar Salieiev. "Principles for certain geomechanics problems solution during overworking of mine workings". E3S Web of Conferences 280 (2021): 01007. http://dx.doi.org/10.1051/e3sconf/202128001007.

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This paper deals with two relevant and interrelated directions of coal mining development. Firstly, the resource-saving complete extraction of reserves, and secondly, the intensification of mining activity through mining operations conducted on several seams. The objective of overworking of mine workings with a real representation of mining-and-geological and mining-engineering conditions has been formulated. Five peculiarities of the geomechanical models construction for overworking of mine works have been revealed and substantiated. The technology for performing a series of computational experiments is proposed. The task of the protecting pillar influence, which is located in overlying coal seam, on the state of mine working placed in the underlying coal seam has been solved. An optimal scheme for its maintenance is proposed.

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Sashurin, A. D., i A. A. Panzhin. "Current problems and objectives in geomechanics". Mining informational and analytical bulletin, nr 3-1 (20.03.2020): 188–98. http://dx.doi.org/10.25018/0236-1493-2020-31-0-188-198.

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The authors discuss one of the key objectives of geomechanics as a mining science. It consists on the investigation of deformation processes phenomena in rock mass and ground surface toward safe and efficient subsoil management as a type of economic activity, as well as for safe and sustainable operation of permanent underground and surface facilities of subsoil use. The emphasis is laid on the fact that subsoil facilities are not only the permanent structures meant for mineral mining and haulage but also the city and industry infrastructure, transportation lines, power generation and water bodies, high-rise structures, etc. for which underground rock mass and ground surface are the integral geotechnical component. All these subsoil use facilities are subject to risk of instability in case of natural and man-made disasters caused by deformation processes in rock masse and on ground surface. The current advances of geomechanics in the stress-strain analysis of rock mass, revealing its discreteness, mosaic structure and variability of stress and strain patterns in time, have offered a new insight into the sources and causes of natural and man-made catastrophes at the subsoil use objects and make it possible to push the limits of modern problems and objectives of geomechanics.

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Rozprawy doktorskie na temat "Mining Geomechanics"

Xu, Guangquan. "Wellbore stability in geomechanics". Thesis, University of Nottingham, 2007. http://eprints.nottingham.ac.uk/11475/.

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Borehole instabilities can be encountered at any stage in the life of a well and they are the main cause of drilling difficulties, resulting in substantial expenditures, expensive loss of time, sometimes even in the loss of part of or even whole boreholes. The main aim of this research is to use new method and theory in geomechanics to conduct the stability analysis of wellbore. The cavity contraction theory is used to get the new elastic-perfectly plastic solutions for vertical borehole with anisotropic stress field. The solutions for Mohr-Coulomb and Hoek-Brown criteria are derived in this paper. A new alternative criterion, which is to limit the radius of plastic zone around borehole, to predict the wellbore instability was also recommended. The finite element code ABAQUS is applied to analyse the mechanical behaviour of wells with different inclinations and different azimuths. A Generalized Plane Strain Model is used in the calculation. The failure wellbore pressure, borehole closure, plastic zone distribution of different direction wells are given in this paper. In order to accurately predict the wellbore behaviour in soft and porous rocks, a suitable and advanced constitutive model of rocks is the key issue of the borehole instability research. A new model, called CASM (Clay And Sand Model) which is based on critical state theory and formulated in terms of the state parameter concept is applied in this research. The non-coaxiality theory is incorporated into CASM to analyse the wellbore stability. Compared with coaxial model, non-coaxial model gives more pessimistic results. However, it was found that the influence of non-coaxiality on wellbore stability depended on initial conditions of wellbore.

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Raffaldi, Michael J. "Static and Dynamic Discrete Element Modelling of Slender Coal Pillars". UKnowledge, 2015. http://uknowledge.uky.edu/mng_etds/21.

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Highwall mining is a mining method used in surface coal operations that involves driving a series of parallel entries into the exposed coal seam at the highwall face under an unsupported roof leaving behind a series of long, but very slender coal pillars. Highwall mining often occurs simultaneously with production blasting taking place in other areas of the mine. Although no failures of highwall pillars have been attributed to nearby blasting, numerical modelling presents an inexpensive means of investigating the possible effects of strong ground motion on the stability of these pillars. This thesis documents the development of a discrete element rock mass model and its application to the simulation of both static and fully dynamic highwall pillar simulations. The approach is geared toward parameter analysis and mechanism identification rather than exact prediction. Some conclusions are made regarding the potential effects of blast vibration on highwall coal pillars and general excavations in rock. The limitations of the modelling approach are discussed and suggestions for future research are proposed.

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Gurgenli, Hakan. "Geomechanical and weathering properties of weak roof shales in coal mines". Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4717.

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Thesis (M.S.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains ix, 99 p. : ill. (some col.), maps (part col.). Includes abstract. Includes bibliographical references (p. 77-81).

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Eitzenberger, Andreas. "Inventory of geomechanical phenomena related to train-induced vibrations from tunnels". Licentiate thesis, Luleå tekniska universitet, Geoteknologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18147.

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Banverket is expecting that the number of railway tunnels in densely populated areas will increase over the next 20 years due to the lack of available space on the ground surface, but also since the railway is considered an environmentally friendly solution of transportation for the future. The need for good predictions of vibration and noise levels in dwellings along the planned tunnels is therefore evident. Due to lack of understanding of the propagation of train-induced vibrations from tunnels in rock a research project has been initiated by Banverket. This thesis constitutes the first stage of that project. In this thesis, the propagation of vibrations through a rock mass has been reviewed. The emphasis has been on wave propagation in hard rock masses. Areas, such as the generation of vibrations at the train-rail interface, the response of buildings and humans, national and international recommended noise and vibrations levels, and possible countermeasures are briefly reviewed as well. Finally, suggestions for the continued research are presented. The propagation of waves is influenced by attenuation along the propagation path. The attenuation can either be through geometric spreading, energy loss within the material, or reflection and refraction at boundaries. In a rock mass, where heterogeneities of various scales are present, the attenuation of (train-induced) waves through the ground therefore mainly depends on the properties of the discontinuities. Theoretical models of wave propagation across individual fractures have been presented in the literature. These models can be used to study the attenuation at the fracture for different combinations of joint stiffness, impedance, and angle of incidence. Also multiple parallel joints can be theoretically analysed. The attenuation of low-frequency waves is more prominent in weak rock masses and virtually negligible for hard rock masses. An increased amount of random oriented joints, faults and boundaries increases the attenuation of the waves, but is not possible to study with the aid of theoretical models. The rock mass is in most cases inhomogeneous due to all heterogeneities present. Despite this fact, the rock mass and soil is always treated as an isotropic, homogeneous material in the analyses of ground-borne noise and ground-borne vibrations. This concerns both numerical and empirical methods. Thus, there is a lack of a method that considers the influence of various heterogeneities present in a rock mass on the propagation of waves. Future research regarding train-induced vibrations should focus on combining the models of attenuation in the material with the models of attenuation across joints. Thereafter, conceptual models should be used to determine the propagation of low-frequency waves in a rock mass containing various amounts of heterogeneities (from isotropic to highly inhomogeneous) which should be compared to the theoretical methods available. Once the behaviour of waves in an inhomogeneous rock mass has been established, conceptual models should be used together with measurements from a few well documented cases. From the results of the analysis, guidelines for analysis of railway tunnels with regard to ground-borne noise and ground-borne vibrations should be established.
Banverket uppskattar att antalet järnvägstunnlar I tätbebyggt område kommer att öka inom de närmaste 20 åren, dels på grund av att tåg är ett miljövänligt transportsätt samt att marken i tätbebyggda områden är begränsad. Det finns därför ett stort behov av tillförlitliga metoder för att bedöma vilka vibrations- samt stomljudsnivåer som kommer att uppstå i bostäderna längs den planerade järnvägen. För att öka förståelsen har Banverket initierat ett forskningsprojekt där denna avhandling utgör den första delen. I denna avhandling har vågors propagering genom bergmassan studerats. Områden som uppkomsten av vibrationerna, hur människor och byggnader påverkas av vibrationer, nationella samt internationella standarder, samt åtgärder för att minska vibrationer har studerats. Slutligen ges förslag på fortsatt forskning.När vågor propagerar genom ett material dämpas vågen. Dämpningen kan bestå av geometrisk dämpning, energiförluster till materialet, eller reflektion och refraktion vid materialgränser. I en bergmassa som innehåller heterogeniteter i varierande skala orsakas dämpningen av vågorna främst av sprickornas egenskaper. Teoretiska modeller av vågors propagering genom en spricka finns rapporterade i litteraturen . Dessa modeller kan användas för att studera en sprickas inverkan på vågor för olika kombinationer av sprickegenskaper, till exempel sprickstyvhet, impedans eller infallsvinkel. Det finns även teoretiska modeller för att studera parallella sprickors inverkan på vågor. Dämpningen av vågor med låg frekvens är dominerande i bergmassor av låg kvalitet men i princip försumbar i hårt friskt berg. Ökad förekomst av sprickor, förkastningar, och materialgränser ökar dämpningen. Det är dock svårt att studera sådana bergmassor på ett bra sätt med analytiska modeller.En bergmassa innehåller en mängd olika typer av heterogeniteter. Trots detta antas oftast bergmassan vara ett isotropt, elastiskt och homogent material vid analyser av stomljud och vibrationer. Detta gäller både numeriska och empiriska modeller. Det finns således ingen metod som beaktar sprickors egenskaper vid analyser av vibrationer i bergmassor. I den fortsatta forskningen bör man studera möjligheten att kombinera metoder som används för att bestämma materialdämpning med metoderna som används för att bestämma dämpningen för sprickor och materialkontakter. Detta skulle möjliggöra utvecklingen av enkla regler för hur bergmassan ska modelleras vid analyser av stomljud. Därtill bör konceptuella modeller användas för att studera vågors propagering genom material med varierande grad av uppsprickning. Dessa enkla modeller bör sedan jämföras med de teoretiska modellerna. De konceptuella modellerna bör sedan kombineras med studier av något eller några väldokumenterade tunnlar. Utifrån analyserna bör det vara möjligt att skapa enkla regler för hur bergmassan ska modelleras då man studerar stomljud.
Godkänd; 2008; 20081211 (ysko)

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Parapuram, George Kurian. "Prediction and Analysis of Geomechanical Properties of the Upper and Middle Bakken Formation Utilizing Artificial Intelligence and Data Mining". Thesis, University of Louisiana at Lafayette, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10682660.

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To efficiently produce oil from unconventional reservoirs, it is imperative to determine and understand the geomechanical properties of the formation. But, due to the high cost of obtaining these properties from geomechanical well logs, businesses are looking for all possible ways to cut cost. The plummeting oil prices have been reflected in company spending and have driven companies to prioritize focusing attention on the rising production costs and venture all possible ways to reduce these costs. The real challenge is how to preserve these profitable gains? There is a need for an alternate and cost- effective way to obtain geomechanical properties of the rocks.

By utilizing Data Analytics, Data Mining, and ANN, patterns are observed between parameters from large amounts of data and, thus, important information regarding the formation can be understood. In this study, a relationship between conventional well logs and geomechanical well logs are established. Properties such as Young’s Modulus, Poisson’s Ratio, Shear Modulus, Bulk Modulus, and Minimum Horizontal Stress are determined from Conventional Logs such as Gamma Ray and Density Log utilizing ANN. Ultimately, data-driven models are developed to predict accurate geomechanical properties for future wells of the Upper and Middle Bakken Formation. Finally, the efficacy of the data-driven models achieved is tested on randomly selected new wells that were not used in the training of the model. The accurate prediction and analysis of these properties help in better reservoir characterization and efficient production from the future wells in the Bakken Formation.

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Bhering, Apolo Pedrosa. "Classificação do maciço rochoso e caracterização das brechas da mina subterrânea de Vazante-MG". Universidade Federal de Viçosa, 2009. http://locus.ufv.br/handle/123456789/3718.

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Made available in DSpace on 2015-03-26T13:27:53Z (GMT). No. of bitstreams: 1 texto completo.pdf: 5961101 bytes, checksum: 1b2e71817a678efd1be8ae17541686d2 (MD5) Previous issue date: 2009-09-22
This dissertation describes the Vazante underground mine rock mass and some important breccias geomechanics features, or bimrocks, which occur in the underground. Systematic geologic-geotechnics mappings of the main levels of the underground mine was carried out, allowing the individualization of four families of main discontinuities, besides the preserved sedimentary bedding and the foliation. The mappings were done following the geomechanics classification RMR and the Q system, supplying correlation between the methods for Vazante's lithotypes. A new campaign of uniaxial tests for the determination of intact rock strength was carried out and the RQD values for each classified area had been determined by statistics analyses. The results were discussed according to each parameter and peculiarities found in each distinct rock mass. The breccias, a rock type which is not very accessible in the geotechnical literature, had been characterized according to the volumetric block proportion (VBP) and strength to simple compression. The values of VBP had been found from the analyses obtained with the aid of the Leica Qwin software for the binarization of the digitalized images. There has also been presented the correlation between the simple compression and the percentages of the main chemical elements that constitutes the Vazante breccias, such as zinc, iron, calcium, magnesium and silicon.
Esta dissertação descreve o maciço rochoso da mina subterrânea de Vazante e algumas importantes características geomecânicas das brechas, ou bimrocks, que ocorrem em subsolo na área da mina. Realizaram-se mapeamentos geológico-geotécnicos sistemáticos dos principais níveis da mina, que permitiram a individualização de quatro famílias de descontinuidades principais, além do acamamento sedimentar preservado e a foliação. Os mapeamentos foram executados seguindo a classificação geomecânica RMR e o Sistema Q, fornecendo correlações entre esses métodos para os litotipos de Vazante. Foi realizada uma nova campanha de ensaios uniaxiais para determinação da resistência da rocha intacta e análises estatísticas para setorização do RQD. Os resultados encontrados são discutidos em função de cada parâmetro e particularidades encontradas em cada maciço rochoso. As brechas, tipo de rocha pouco descrito na literatura geotécnica, foram caracterizadas em função da proporção volumétrica de blocos (VBP) e resistência à compressão uniaxial. Os valores de VBP foram obtidos a partir de análises realizadas com o auxílio do software Leica QWin para binarização das imagens digitalizadas. São apresentadas também as correlações entre resistência à compressão simples e os teores dos principais elementos químicos constituintes das brechas de Vazante, como zinco, ferro, cálcio, magnésio e silício.

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Старотіторов, Ігор Юрійович, Игорь Юрьевич Старотиторов i I. Y. Starotitorov. "Обґрунтування параметрів кріплення підготовчих виробок залізорудних шахт Кривбасу, що пройдені в неоднорідному породному масиві". Дисертація, Видавництво НГУ, 2011. http://ir.nmu.org.ua/handle/123456789/103.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.15.09 – «Геотехнічна і гірнича механіка». ДВНЗ «Національний гірничий університет», Дніпропетровськ, 2011.
Диссертация на соискание ученой степени кандидата технических наук по специальности 05.15.09 – «Геотехническая и горная механика». ГВУЗ «Национальный горный университет», Днепропетровск, 2011.
Dissertation for Ph.D. degree in the specialty 05.15.09 – "Geotechnical and Rock mechanics". State higher educational establishment "National Mining University", Dnipropetrovsk, 2011.
У дисертації вирішена актуальна науково-технічна задача підвищення стійкості підготовчих виробок залізорудних шахт Кривбасу. Виконаний аналіз витрат, пов'язаних з підтримкою гірничих виробок. Організовані та проведені натурні вимірювання конвергенції в гірничих виробках. Проведені лабораторні випробування основних вміщуючих порід і руди, в тому числі і за межею міцності. Виконаний аналіз існуючих теорій міцності. Методом скінченних елементів виконане моделювання процесу руйнування гірських порід в об'ємному напруженому стані і в одноосьовому за межею міцності. Розроблений алгоритм розв'язання пружнопластичної завдачі з урахуванням можливості руйнування гірських порід за межею міцності. Для гірничо-геологічних умов ш. «Родіна» виконаний геомеханічний аналіз умов підтримки підготовчих виробок з використанням удосконаленого алгоритму розрахунку. Виконані розрахунки параметрів анкерного кріплення для розглянутих умов.
В диссертации решена актуальная научно-техническая задача повышения устойчивости подготовительных выработок железорудных шахт Кривбасса. Выполнен анализ затрат, связанных с поддержанием горных выработок. Организованы и проведены натурные измерения конвергенции в горных выработках, что позволило установить закономерности их деформирования в зависимости от комплексного показателя разработки, и на этой основе вести прогноз состояния геомеханической системы “крепь – породный массив”. Выполнены лабораторные испытания основных вмещающих пород и руды, в том числе и за пределом прочности. Построены гистограммы распределения предела прочности на одноосное сжатие, которое ближе всего аппроксимируеться логнормальным законом распределения. Выполнено моделирование устойчивости подготовительных выработок, пройденных в существенно неоднородном породном массиве, что позволило установить тенденции в части их поддержания. Выполнен анализ существующих теорий прочности, позволивший сравнить результаты лабораторных и теоретических исследований, и обосновать возможность использования в геомеханических расчетах теорию прочности Баландина. Методом конечных элементов проделано моделирование процесса разрушения горных пород в объемном напряженном состоянии и в одноосном за пределом прочности. Доказано, что при условии распределения прочности по логнормальному закону, кривые запредельного деформирования достаточно близко соответствуют реальным кривым деформирования. Разработан алгоритм решения упругопластической задачи с учетом возможности разрушения горных пород за пределом прочности. Для горногеологических условий ш. «Родина» выполнен геомеханический анализ условий поддержания подготовительных выработок с использованием усовершенствованного алгоритма расчета. Выполнены расчеты параметров анкерной крепи для рассматриваемых условий. Натурные замеры показали, что с учетом поправочных коэффициентов алгоритм расчета позволяет достаточно точно вести прогноз основных геомеханических параметров. На основе выполненных исследований разработана и принята к использованию на шахтах ОАО «КЖРК» «Методика оценки устойчивости подземных выработок на рудниках Кривбасса». Предполагаемый экономический эффект от внедрения результатов исследований в условиях ш. «Родина» составил 258 тыс. грн./год.
An actual scientific and technical problem of improving the stability of development workings for Krivbass iron ore mines is solved in the work. The analysis of the costs associated with maintaining mine workings is made. Situ measurements of convergence in the mines are organized and carried out. Laboratory testing the main enclosing rocks and ores, including compressive strength testing, are made. The analysis of existing strength theories is made. Simulation of rock failure in a complex stress state and in uniaxial compressive strength is done using finite element method. An algorithm for the solution of elastoplastic problem is developed. It takes into account the possibility of rocks to failure in compressive strength. Geomechanical analysis of the maintaining conditions for development workings with using an improved calculation algorithm is made for the mining and geological conditions of the "Rodina" mine. Calculations of the bolt support parameters are made for the conditions considered.

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Flora, Charanpreet Singh. "Evaluation of Slope stability for Waste Rock Dumps in a Mine". Thesis, 2009. http://ethesis.nitrkl.ac.in/1386/1/Thesis_2.pdf.

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The growing needs have been pushing the limits, to which the mining industry has to reach to lift itself to fulfill the demand. The effect can be seen from the methods of mining that have evolved over the years. The heavy machinery adopted for the extraction has been producing wastes in the form of waste rocks whose management is again of prime importance. The issues relating to the stability of these overburden dumps is catching attention worldwide from quite some time, which is quite important for the safe working in and around these monstrous structures as well as restricted availability of land. This paper deals with the stability issues of dumped slopes for a local chromite mine. The analysis cover analysis of various sections of the waste dumps from the mine including material properties, strength values, bench height and angle.

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Nanda, Abinash. "Correlation analysis of spontaneous heating of some SECL coals". Thesis, 2010. http://ethesis.nitrkl.ac.in/2004/1/Abinash_Nanda_final.pdf.

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The auto oxidation of coal ultimately leads to spontaneous combustion which is the major root cause for the disastrous of coal mine. It has been a major problem in the leading producing coal countries like Australia, India and China. Therefore the assessment for this combustion is very much necessary. It depends upon different characteristics and properties of coal. Once if the combustion of coal has been occurred, it is very difficult to control which also disturbs the environment of the surroundings of the mine. The spontaneous heating susceptibility of different coals varies over a wide range and it is important to assess their degree of proneness for taking preventive measures against the occurrence of fires to avoid loss of lives and property, sterilization of coal reserves and environmental pollution and raise concerns about safety and economic aspects of mining etc The project deals with the thermal analysis of various parameters of coal with the spontaneous heating tendency of coal. Ten coal samples were collected from South Eastern Coalfields Limited (SECL), Coal India Limited. The project deals with correlation analysis of various parameters determined by experimental techniques. The intrinsic properties as well as susceptibility indices of the coal samples were determined by following experimental techniques: Proximate analysis Calorific value Flammability temperature Wet oxidation potential Differential thermal analysis It was found from analysis that DTA – TG is the best method to assess the spontaneous hating tendency of coal in comparison to Flammability temperature and Wet oxidation potential. It was also observed that the Transition temperature obtained from the DTA – TG plot cannot be taken as a sole parameter to assess the spontaneous heating of coal, rather Stage IIB and Stage II slopes give a better idea. It was also found that Flammability temperature method does not provide an accurate measure of spontaneous heating tendency of coal. It was found that Wet oxidation potential gave a fair enough approximation for spontaneous heating tendency for high moisture coals. However it can be taken as a parameter for spontaneous heating susceptibility as it requires less time for conduction than DTA –TG.

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Ghosh, Nilabjendu. "Permeability of Indian coal". Thesis, 2011. http://ethesis.nitrkl.ac.in/2494/1/final_thesis.pdf.

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Now-a-days there is much constraint being faced by coal mine operators from multiple stake holders. Those are local inhabitants, environmental activists, government regulatory bodies, etc. It has focused attention to develop alternate approaches to extract coal resource. Coal bed methane drainage and carbon dioxide sequestration is one of such mechanism. Determination of the permeability of coal seams has a huge bearing on the identification and selection of viable sites for carbon sequestration. In this study an attempt was made to find out the permeability of coal from Ib Valley area of Mahanadi Coalfields Limited. Samples were collected from a local mine and cores were prepared according to standard procedures. An experimental setup was designed and fabricated based on the constant head method of permeability determination and tests were carried out on the samples for over a period of time. The results obtained were compared with values reported by others’ and it was found that the setup gave a reasonable measure of the permeability of the sample.

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Książki na temat "Mining Geomechanics"

Brown, E. T. Block caving geomechanics. Indooroopilly, Qld: Julius Kruttschnitt Mineral Research Centre, The University of Queensland, 2003.

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Sevi, Adam, Jose Neves i Honghua Zhao, red. Enhancements in Applied Geomechanics, Mining, and Excavation Simulation and Analysis. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-95645-9.

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Bureau of Mines Technology Transfer Seminar (1986 Pittsburgh, Pa.). Eastern coal mine geomechanics: Proceedings, Bureau of Mines Technology Transfer Seminar, Pittsburgh, PA, November 19, 1986. [Pittsburgh, Pa.]: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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International Bureau of Strata Mechanics. Plenary Scientific Session. Effect of geomechanics on mine design: Proceedings of the 12th Plenary Scientific Session of the International Bureau of Strata Mechanics/World Mining Congress, Leeds, 8-13 July 1991. Rotterdam: A.A. Balkema, 1992.

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Kidybinski. Effect Geomechanics on Mine Design. Taylor & Francis, 1992.

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Bondarenko, Volodymyr, Iryna Kovalevska, H. Symanovych, M. Barabash i O. Vivcharenko. Geomechanics of Mine Workings Support Systems. Taylor & Francis Group, 2018.

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Bondarenko, Volodymyr, Iryna Kovalevska, Hennadiy Symanovych, Mykhaylo Barabash i Oleksandr Vivcharenko. Geomechanics of Mine Workings Support Systems. Taylor & Francis Group, 2018.

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Zoback, Mark D., i Arjun H. Kohli. Unconventional Reservoir Geomechanics: Shale Gas, Tight Oil, and Induced Seismicity. Cambridge University Press, 2019.

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Zoback, Mark D., i Arjun H. Kohli. Unconventional Reservoir Geomechanics: Shale Gas, Tight Oil, and Induced Seismicity. Cambridge University Press, 2019.

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Sevi, Adam, Jose Neves i Honghua Zhao. Enhancements in Applied Geomechanics, Mining, and Excavation Simulation and Analysis. Springer, 2018.

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Części książek na temat "Mining Geomechanics"

Kawalec, Jacek. "Geotechnical Solutions for Linear Transport Infrastructure in Mining Areas". W Springer Series in Geomechanics and Geoengineering, 1677–81. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97115-5_169.

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Liu, Jing-jing, i Jian-chao Liu. "Quantitative Evaluation of Tight Sandstone Reservoirs Based on Data Mining Using MICP Data". W Springer Series in Geomechanics and Geoengineering, 3224–33. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0761-5_302.

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Miranda, T., L. R. Sousa, W. Ruggenthen i R. L. Sousa. "Application of Data Mining Techniques for the Development of New Rock Mechanics Constitutive Models". W Springer Series in Geomechanics and Geoengineering, 735–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32814-5_96.

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Zhao, Chunhu. "Plastic Damage of the Surrounding Rock under the Influence of Confined Water Pressure and Mining Disturbance". W Springer Series in Geomechanics and Geoengineering, 795–802. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32814-5_104.

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Zamora, Mario, i Jose Osorno. "Exploration of Hydrocarbons and Mining and Energy Resources Using Non-seismic Methods - Nuclear Magnetic Resonance Technology". W Springer Series in Geomechanics and Geoengineering, 3495–513. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_322.

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Ni, Pan, Peng Lv i Wei-chao Sun. "Application of Energy Saving and Consumption Reduction Measures in Oil Field Based on Big Data Mining Theory". W Springer Series in Geomechanics and Geoengineering, 7147–54. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1964-2_607.

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Mo, Pin-Qiang, Feng Gao i Guoqing Zhou. "Magneto-Gravity Simulation of Cone Penetration Test in Cohesionless Soil Under Small Gravity Fields". W Enhancements in Applied Geomechanics, Mining, and Excavation Simulation and Analysis, 1–10. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95645-9_1.

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Zhao, Honghua, Jin Zhang, Peng Qiu i Shunying Ji. "A New Method Based on PFC3D and Hierarchical Modeling for Pile Foundation Analysis". W Enhancements in Applied Geomechanics, Mining, and Excavation Simulation and Analysis, 98–114. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95645-9_10.

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Hsu, Sung-Chi, Ming-Hung Liu, Tai-Seong Quah i Yishuo Huang. "Investigation and Numerical Simulation Analyses of the Landslides in Terrace Formation". W Enhancements in Applied Geomechanics, Mining, and Excavation Simulation and Analysis, 115–25. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95645-9_11.

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Kong, Qiaoli, Jinyun Guo, Litao Han i Yi Shen. "Performance of Three Atmospheric Density Models on Precise Orbit Determination for Haiyang-2A Satellite Using DORIS Data". W Enhancements in Applied Geomechanics, Mining, and Excavation Simulation and Analysis, 126–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95645-9_12.

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Streszczenia konferencji na temat "Mining Geomechanics"

Dunn, Michael. "Quantifying uncertainty in mining geomechanics design". W First International Conference on Mining Geomechanical Risk. Australian Centre for Geomechanics, Perth, 2019. http://dx.doi.org/10.36487/acg_rep/1905_23_dunn.

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Saeidi, Negar, Dean Millar, Lorrie Fava i Ming Cai. "Towards mining schedule optimisation constrained by geomechanics". W Seventh International Conference on Deep and High Stress Mining. Australian Centre for Geomechanics, Perth, 2014. http://dx.doi.org/10.36487/acg_rep/1410_33_saeidi.

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Simmons, John. "Geomechanics of Australian open cut coal mining". W 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2020. http://dx.doi.org/10.36487/acg_repo/2025_0.03.

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McGaughey, W. "Artificial intelligence and big data analytics in mining geomechanics". W Ninth International Conference on Deep and High Stress Mining. The Southern Africa Institute of Mining and Metallurgy, Johannesburg, 2019. http://dx.doi.org/10.36487/acg_rep/1952_04_mcgaughey.

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Yu, Xin, Weidong Song, Yuye Tan, John Kemeny, Shengwen Qi i Bowen Zheng. "Triaxial Cyclic Loading Fracture of Rock-Encased-Backfill Structure by Xray and Acoustic Emission". W International Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/igs-2022-204.

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Abstract The strain softening behavior of the rock-encased-backfill (RB) structure decides the stability of the underground backfilling stope during cyclic excavation and blasting. To investigate the cyclic failure behavior of the RB specimen, a series of triaxial cyclic loading experiments were conducted in different volume fractions of rock, confining pressures, and cyclic loading rates. Results show the strain hysteresis curve increases from sparse to dense with the increase of the confining pressure, showing a significant strain-softening characteristic. The elastic strain energy increases linearly and the dissipation energy increases exponentially with the number of cycles. The percentage of shear microcracks during each circle increased quadratically, which was very similar to the trend of dissipation energy. When VF=0.73 and the loading and unloading rate was 400 N/s, the percentage of shear microcracks in RB specimens was higher than that in other cases, especially higher under 9 MPa. This finding indicates that RB specimens are more prone to meso damage and elastic-plastic transformation under a specific condition, and the importance to conduct more studies on the coupling mechanism of the bi-geological-materials structure. Introduction Backfill is one kind of artificial and green material reserved in the underground, which is made with waste tailings after mining excavation. Its mechanical properties are similar to soil and cement, which is far away from that rock mass nearby. After the backfill is consolidated, the field stress will be redistributed in the rock-encased-backfill structure (RB).

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Ferguson, Gavin, Marko Didyk, Luis Zenteno Yelpi, Juan San Martin i Robert Fowell. "Cave mining design methodology for use in challenging geomechanics environments". W First International Conference on Underground Mining Technology. Australian Centre for Geomechanics, Perth, 2017. http://dx.doi.org/10.36487/acg_rep/1710_22_ferguson.

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Swarbrick, Gareth, i Strathconagh Clarke. "Shape Accel Arrays — comparative performance in a mining application". W Ninth International Symposium on Field Measurements in Geomechanics. Australian Centre for Geomechanics, Perth, 2015. http://dx.doi.org/10.36487/acg_rep/1508_10_swarbrick.

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Baraiac, Oana. "GEOMECHANICS SURVEYS CONCERNING THE SUSTAINABLE REHABILITATION OF PAROSENI MINING EXPLOITATION". W 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/ba1.v1/s03.036.

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Price, Jeff. "Implications of groundwater behaviour on the geomechanics of rock slope stability". W First Asia Pacific Slope Stability in Mining Conference. Australian Centre for Geomechanics, Perth, 2016. http://dx.doi.org/10.36487/acg_rep/1604_0.3_price.

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Loken, M. C., i J. C. Johnson. "Methodology for Determination of Anisotropic In Situ Stress and Principal Orthotropic Directions from Field Testing". W International Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/igs-2022-056.

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Abstract The bi-axial stress test is a two-dimensional (2-D) field test in which horizontal and vertical stresses are applied to a circular “hole in the plate” problem. The diametric closures are measured at three uniformly spaced locations. Using the Kirsch solution, and assuming an isotropic elastic medium, the magnitude of the in-plane far-field principal stresses (𝜎1, 𝜎2) and their orientation (𝛼) can be uniquely determined. However, the Kirsch Solution has limitations, since the two-dimensionality is applicable only for conditions of plane strain or plane stress; and in reality, the out-of-plane stress condition is somewhat in between. The major outcome of this paper is the development of a methodology to determine the three-dimensional principal stresses (𝜎1, 𝜎2,𝜎3) and their orientations (𝛼,𝛽,𝛾) using the two-dimensional Kirsch Solution in three mutually perpendicular planes. Introduction The Sanford Underground Research Facility (SURF, formerly known as DUSEL) is a dedicated underground scientific research facility located in Lead, South Dakota, at the former site of the Homestake gold mine. The SURF mission includes the construction of large underground cavern openings at depths of about 1500 meters to house large-scale physics experiments. A primary rock mechanics concern is the stability of these proposed large-diameter caverns (up to 165 meters) in a host rock which has been characterized to be orthotropic in the following conditions: (1) geometry, (2) in situ stress, (3) elasticity, and (4) strength. Of these four conditions of orthotropy, the second dimension (in situ stress) will be examined in this paper. The objective of this research is to present the theoretical development and implementation of the equations that define two- and three-dimensional orthotropic in situ stress. The equations are developed based on an interpretation of the biaxial stress test in two dimensions and extrapolation of multiple orthotropic field test results in three dimensions. The two-dimensional results are presented in the next section. These two-dimensional equations are used in the development of the three-dimensional equations for determination of the principal stress magnitudes and orientation, which are given in the subsequent section. The method is validated with a numerical example and will be applied to a data set of test results performed in situ to determine the orthotropic stress state (both magnitudes and orientations) in an underground mining location. The results of this mathematical development are applied to an orthotropic biaxial stress field test in Section 4, followed by a number of important conclusions in Section 5. The paper is concluded with a list of applicable references and several supporting figures and tables of results.

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