Bibliografias temáticas / Galleria Minini

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Literatura científica selecionada sobre o tema "Galleria Minini"

Autor: Grafiati

Publicado: 25 de julho de 2024

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Artigos de revistas sobre o assunto "Galleria Minini"

Lednická, Markéta, e Zdeněk Kaláb. "Determination of Granite Rock Massif Weathering and Cracking of Surface Layers in the Oldest Parts of Medieval Mine Depending on Used Mining Method". Archives of Mining Sciences 61, n.º 2 (1 de junho de 2016): 381–95. http://dx.doi.org/10.1515/amsc-2016-0028.

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Abstract The paper presents the use of selected non-destructive testing methods for the purpose of specifying information on weathering and cracking of surface layers of granite rock massif in the medieval Jeroným Mine (the Czech Republic). This mine has been declared the National Heritage Site of the Czech Republic and its opening as a mining museum to the public is gradually prepared. Geological and geomechanical evaluation documents the possibility to find all kinds of weathering grades of rock massif in this mine. Two non-destructive methods have been tested, namely the measurement of ultrasonic pulse velocity and the measurement of Schmidt hammer rebound value. Field measurements were performed in two selected galleries to verify the application of such methods in specific conditions of underground spaces. Used mining method is one of the parameters later influencing cracking of rock massif. In selected galleries, two different mining methods were used which means that a part of a gallery profile was mined out by hand tools in the Middle Ages and another part of the profile was later mined out by blasting. Measurements in these galleries have enabled to analyse the influence of used mining methods on cracking of rock massif in the impaired zone, and, consequently, on ongoing weathering processes in those zones.

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Colombo, Vitor, Maria Lurdes Dinis e José Soeiro de Carvalho. "Numerical Model to Assess the State and Increase of Temperatures in Underground Mine Galleries: A Tool to Support Heat Recovery Projects". International Journal of Terrestrial Heat Flow and Applications 4, n.º 1 (26 de março de 2021): 110–18. http://dx.doi.org/10.31214/ijthfa.v4i1.69.

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Underground mining is facing growing challenges related to the need to mine deeper and at higher temperatures, to operational expenditures associated with energy consumption, lower grade ores, environmental constraints, and social pressures. In this scenario, a new numerical model is proposed to estimate temperature increase inside mining galleries to provide specific criteria for heat recovery projects, which may consider heat extraction from abandoned mines using closed-loop geothermal systems or from operating mines using the exhaust ventilation air. This model couples different approaches from previous models and include key parameters unemployed until this moment, such as wall roughness and velocity profile modeling, what would allow for a more realistic estimation of convective heat transfer phenomena, which is critical to predicting heat exchange in ventilation air due to the turbulent nature of the airflow. The model also includes other heat sources that could be present inside galleries and should be accounted for, such as machinery, once the heat dissipated to the environment might be substantial depending on the equipment and gallery geometry. The general intention of this project is to account for every heat source that may contribute to increasing the temperature inside the gallery, so it becomes tangible to harness as much heat energy as possible, preventing energetic losses and stimulating an increase of thermodynamic efficiency in underground mining operations. The model is not validated yet with real temperature data, but preliminary results agree with the ones from previous models.

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Paul, Avinash, V. M. S. R. Murthy e Ajoy Kumar Singh. "Rock Load Estimation in Development Galleries and Junctions for Underground Coal Mines: A CMRI-ISM Rock Mass Rating Approach". Journal of Mining 2014 (9 de março de 2014): 1–9. http://dx.doi.org/10.1155/2014/618719.

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Rock mass rating (RMR) plays important role in design and selection of support system (Ghosh, 2000). For stability assessment of rock mass it is very important to know the amount of rock load mobilized around the development gallery which is estimated using RMR (Singh et al., 2003, Barton et al., 1974, Bieniawski, 1984, and Ghosh et al., 1992). In Indian coal mines, Central Mining Research Institute-Indian School of Mines rock mass rating (herein after referred to as CMRI-ISM RMR) is mostly used for formulating design guidelines for supports. In this paper an attempt has been made to correlate CMRI-ISM RMR values and rock load of galleries and junctions for different gallery widths, ranging from 3.6 m to 4.8 m, at different densities of roof rocks. The proposed empirical expression can help in quick design of support system for underground coal mines working in the same regime.

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Szabó, Krisztina. "A Pécs környéki szénbányászat épített környezetének nevei". Névtani Értesítő 33 (30 de dezembro de 2011): 101–11. http://dx.doi.org/10.29178/nevtert.2011.9.

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The paper discusses the names indicating the elements of the man-made environment established after 1848 in the coal-mining district neighbouring the town of Pécs. Names for shafts, galleries and mine premises are analysed in a functional-semantic framework. With respect to the three types of names, names for shafts should be considered as the most characteristic type, as names for galleries and mine premises are often derived from shaft names. Direct motivation is common in all three name types: names for shafts often refer to a person, whilst galleries and mine premises usually take their names from an establishment. The lack of direct relationship between the specific name constituent and the designated denotatum can mostly be observed in the case of shaft names. One third of the names for galleries are of uncertain origin, and only a single name for a mine premise has a blurred function. Names of commemorating function are frequent in case of names for shafts and mine premises, but are lacking in case of names for galleries (as galleries are usually used for a short period of time). Mine premises, often functioning up to the present day, long after the mines were closed down, were not named after their characteristics at all, and do not bear names of conventional function either. Names indicating the type of the denotatum are extremely rare: in the observed name corpus this function can only be exemplified by a single name for a gallery.

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Santisteban, María, Ana Teresa Luís, José Antonio Grande, Javier Aroba, José Miguel Dávila, Aguasanta Miguel Sarmiento, Juan Carlos Fortes, Francisco Cordoba e Ángel Mariano Rodriguez-Pérez. "Hydrochemical Characterization of an Acid Mine Effluent from Concepcion Mine Using Classical Statistic and Fuzzy Logic Techniques". Minerals 12, n.º 4 (11 de abril de 2022): 464. http://dx.doi.org/10.3390/min12040464.

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This work focuses on the physical-chemical characterization of a mining effluent affected by acid mine drainage (AMD) from its source to the confluence in the Odiel river, one of the most polluted rivers by AMD worldwide, in order to understand the reactions involved in the modifications in the chemical characteristics of water and precipitates resulting from water–rock–atmosphere interaction in an environment highly affected by mining activity without corrective measures. The channel starts in an open pit lake through one of the Concepción Mine main galleries, located in the Iberian Pyrite Belt, about 10 km northwest of Rio Tinto mining complex (southwest Spain). This gallery intercepts one of the largest and oldest underground mining work locations called “gallery Carmen”, allowing the exit of AMD affected waters. This channel is the first AMD polluting source in the Odiel basin. Thus, at the end of the rainy season, we conducted water sampling along this channel, from its source to its mouth, to further analyse its characterization and interpret the cause–effect relationships through the application of Fuzzy Logic and classical statistics tools. The interdependent relationship between the measured physicochemical parameters are set in order to propose a model, capable of describing the evolution of contaminants in response to the processes and reactions taking place within the affected channel and the Odiel river. The present work concluded the existence of natural attenuation processes for the mining channel, despite the entrances of other drainages in the AMD channel with different hydrochemical characteristics imposing modifications on it. This indicates that these media have a high vulnerability to external stimuli.

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Kocot, Wojciech, e Aleksander Wodyński. "Case Study of Insufficient Resistance to Mining Impacts of the Industrial Transport Gallery". Geoinformatica Polonica 20 (30 de dezembro de 2021): 109–15. http://dx.doi.org/10.4467/21995923gp.21.009.14980.

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The article presents an example of a transport gallery, which resistance to mining impacts proved to be not enough. In the first part of the article, there are given the principles which should be followed by this type of structures. The second part presents a of the gallery’s structure and also the analysis of the reasons for too low resistance of the objectdescription to mining influences. It has been shown that these reasons are design, execution and exploitation errors. In turn, there are presented procedures which are leading to the assurance of the resistance of the transport gallery in accordance with design assumptions. In summary, conclusions and recommendations which are formulated should be taken into account at the stage of design, erection and during exploitation of transport galleries in the industrial plants localized in mining areas. ANALIZA PRZYPADKU NIEWYSTARCZAJĄCEJ ODPORNOŚCI NA WPŁYWY GÓRNICZE PRZEMYSŁOWEJ GALERII TRANSPORTOWEJ W artykule przedstawiono przykład galerii transportowej, której odporność na wpływy górnicze okazała się niewystarczająca. W pierwszej części artykułu podano zasady, jakim powinny odpowiadać tego typu obiekty budowlane. W części drugiej przedstawiono opis konstrukcji przedmiotowej galerii oraz przeanalizowano przyczyny zbyt niskiej odporności obiektu na wpływy górnicze. Wykazano, że są to zarówno błędy projektowe, jak i wykonawcze oraz eksploatacyjne. Z kolei przedstawiono zabiegi zmierzające do zapewnienia galerii transportowej odporności zgodnej z założeniami projektowymi. W podsumowaniu sformułowano wnioski i zalecenia, które powinny być uwzględniane na etapie projektowania i budowy oraz podczas eksploatacji galerii transportowych w zakładach przemysłowych usytuowanych na terenach górniczych.

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Szlązak, Nikodem, Marek Borowski, Dariusz Obracaj, Justyna Swolkień e Marek Korzec. "Comparison of Methane Drainage Methods Used in Polish Coal Mines". Archives of Mining Sciences 59, n.º 3 (20 de outubro de 2014): 655–75. http://dx.doi.org/10.2478/amsc-2014-0046.

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Abstract Methane drainage is used in Polish coal mines in order to reduce mine methane emissions as well as to keep methane concentration in mine workings at safe levels. This article describes methods of methane drainage during mining used in Polish coal mines. The first method involves drilling boreholes from tailgate roadway to an unstressed zone in roof or floor layers of a mined seam. It is the main method used in Polish mining, where both the location of drilled boreholes as well as their parameters are dependent on mining and ventilation systems of longwalls. The second method is based on drilling overlying drainage galleries in seams situated under or over the mined seam. This article compares these methods with regard to their effectiveness under mining conditions in Polish mines. High effectiveness of methane drainage of longwalls with different ventilation and methane drainage systems has been proven. The highest effectiveness of methane drainage has been observed for the system with overlying drainage gallery and with the parallel tailgate roadways. In case of classic U ventilation system of longwall panel, boreholes drilled from the tailgate roadway behind the longwall front are lost.

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Nkakanou, B., G. Y. Delisle e N. Hakem. "Experimental Characterization of Ultra-Wideband Channel Parameter Measurements in an Underground Mine". Journal of Computer Networks and Communications 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/157596.

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Experimental results for an ultra-wideband (UWB) channel parameters in an underground mining environment over a frequency range of 3 GHz to 10 GHz are reported. The measurements were taken both in LOS and NLOS cases in two different size mine galleries. In the NLOS case, results were acquired for different corridor obstruction angles. The results were obtained during an extensive measurement campaign in the UWB frequency, and the measurement procedure allows both the large- and small-scale parameters such as the path loss exponent, coherence bandwidth, and so forth, to be quantified. The capacity of the UWB channel as a function of the physical depth of the mine gallery has also been recorded for comparison purposes.

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Vaselli, Orlando, Marta Lazzaroni, Barbara Nisi, Jacopo Cabassi, Franco Tassi, Daniele Rappuoli e Federica Meloni. "Discontinuous Geochemical Monitoring of the Galleria Italia Circumneutral Waters (Former Hg-Mining Area of Abbadia San Salvatore, Tuscany, Central Italy) Feeding the Fosso Della Chiusa Creek". Environments 8, n.º 2 (20 de fevereiro de 2021): 15. http://dx.doi.org/10.3390/environments8020015.

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The Galleria Italia waters drain the complex tunnel system of the former Hg-mining area of Abbadia San Salvatore (Tuscany, central Italia) and feed the 2.5 km-long Fosso della Chiusa creek. The mining exploitation was active for more than one century and more than 100,000 tons of liquid mercury were produced by roasting processes of cinnabar (HgS). In this work, a discontinuous geochemical monitoring of the Galleria Italia circumneutral waters was carried out from February 2009 to October 2020, during which the main physicochemical parameters, main and minor dissolved species and trace elements (including Hg) were determined. In the observation period, significant variations in the water chemistry were recorded, particularly when flooding waves, due to intense precipitations, occurred, with the two main events being recorded in February 2009 and January 2010. The chemical composition of the Galleria Italia waters was Ca(Mg)-SO4 and related to congruent dissolution of gypsum/anhydrite at which a contribution from carbonatic and silicatic minerals and partial solubilization of CO2 and and H2S oxidation is to be added. Regarding the trace elements, Al, Mn and Fe were up to 1500, 768 and 39520 μg L−1, with these elements also showing high contents in the sediment precipitating by the Galleria Italia waters. In most cases, dissolved mercury was below the instrumental detection limit (<0.1 μg L−1), although occasionally it reached >1 μg L−1. Considering a mean flow rate of 40 L s−1 of the discharged water, the amount of dissolved mercury released from Galleria Italia was computed, although most mercury was occurring in the sediment (1.2 mg kg−1). A more realistic computation of mercury released from Galleria Italia should involve a sampling network along the Fosso della Chiusa before entering the riverine system of the Tiber basin, into which dissolved and suspended mercury are to be determined along with that occurring in the sediments.

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Carrión-Mero, Paúl, Maribel Aguilar-Aguilar, Fernando Morante-Carballo, María José Domínguez-Cuesta, Cristhian Sánchez-Padilla, Andrés Sánchez-Zambrano, Josué Briones-Bitar, Roberto Blanco-Torrens, Javier Córdova-Rizo e Edgar Berrezueta. "Surface and Underground Geomechanical Characterization of an Area Affected by Instability Phenomena in Zaruma Mining Zone (Ecuador)". Sustainability 13, n.º 6 (16 de março de 2021): 3272. http://dx.doi.org/10.3390/su13063272.

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In the last decade, in the mining district of Zaruma-Portovelo, there has been significant land subsidence related to uncontrolled mining activity. The purpose of this work was to carry out a surface and underground geomechanical characterization of a mining sector north of the city of Zaruma that allows the definition of potentially unstable areas susceptible to the mass movement. The methodology used consists of the following stages: (i) compilation of previous studies; (ii) surface and underground characterization of rocky material to establish its susceptibility to mass movement; (iii) interpretation of results; and (iv) proposal of action measures. Among the most relevant results, it stands out that 26.1% of the 23 stations characterized on the surface present conditions that vary from potentially unstable to unstable. In underground galleries, the studied mean values of the 17 stations indicate that the rock has a medium to good quality, representing a medium susceptibility to gallery destabilization. The results obtained for the surface areas (depths up to 50 m, where altered materials predominate) and the underground areas (depths > 50 m, where the alterations are specific) can be used to identify the areas with a more significant potential for instability. For both cases, it has been possible to define specific monitoring, control, and planning actions for sensitive areas.

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Mais fontes

Teses / dissertações sobre o assunto "Galleria Minini"

Camallanqui-Alborque, C., G. Quispe e C. Raymundo-Ibañeez. "Controlled Trim-Blasting Model to Improve Stability and Reduce Vibrations at a Production Gallery of the San Ignacio de Morococha S.A.A. Mining Company". IOP Publishing Ltd, 2019. http://hdl.handle.net/10757/656296.

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This paper presents a blasting method called controlled trim blasting, in which the rock mass of an unstable gallery where high levels of vibration have been detected is analyzed. This methodology comprises a drilling mesh with two-contour gallery assessment, producing its drilling machines and determining the type of explosive used and burden and spacing, which will be detonated after the internal blasting. Further, the internal blasting will possess its drilling machines, burden, spacing, and a second type of explosive. The separation of the gallery into smaller parts will improve the blasting, as verified in the recorded simulation. In addition, the rock-mass stability improves because the explosives used in the perimeter of the gallery are low-power with mild detonation pressure, which does not generate high levels of vibration. This is a practical and efficient method in areas where the rock mass is not good or there is a mixture of rock types.

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Prasad, B. N. V. Siva. "Study of Strata Behaviour in Blasting Gallery Panel in Coal Mines". Thesis, 2013. http://ethesis.nitrkl.ac.in/5142/1/109MN0505.pdf.

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In mining industry, the challenging task of a mining professional comprises of the extraction of maximum natural resources with utmost safety of the miners. ¡§Blasting Gallery¡¨ method is a unique technique of depillaring thick seams for higher recovery of coal. The present study has been aimed to examine thoroughly BG method operational systems in Indian geo-mining conditions such as: „« Study of roof convergence with respect to face advancement during different stages of extraction of coal in Blasting Gallery panels in SCCL mines. „« Simulation of field conditions in the numerical model generated using FLAC. „« Interpretation of strata behaviour through numerical modeling using FLAC. For this purpose, BG panel of GDK 10 incline, Singareni Collieries Company Limited (SCCL) was selected. This mine has a thick coal seam of 11m, at a depth of 350mtr. Convergence behaviour with respect to goaf edge distance (GED) was monitored with the help of high state-of-the-art equipment throughout the life of BG panel. The coal sample was collected from the mine and tested for determination of the rock mass parameters. The geotechnical conditions of the mine were simulated through Numerical Modelling by FLAC. The results obtained from the FLAC were compared to field data so that the validation would represent the system in totality. The different conclusions drawn from this work is enumerated as follows: „« The maximum rate of convergence and cum. convergence recorded in field was 4mm/day and 61mm respectively, measured at station C-5 in 68 Level. „« From the triaxial testing, the major principal stresses of 22, 32 and 41.5 MPa were obtained at confining stresses of 0, 2 and 3 MPa respectively. „« The results obtained from the RocLab software indicated the Cohesion, Friction Angle, UCS and Tensile Strength values to be 1.1MPa, 30.840, 1.314 MPa and 0.32MPa respectively. „« The model predicted maximum cumulative convergence to be 70mm while that observed in field is 61mm.

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Cook, Patrick Michael. "The inhibition of coal-dust explosions with stone dust in a large scale explosion gallery". Thesis, 1992. http://hdl.handle.net/10539/22947.

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A dissertation submitted to the Faculty of Engineering, University of the Witwatersrand, Johannesburg, in fulfillment of the requirements for the degree of Master of Science in Engineering
Regulation 10.24 of the Minerals Act (1991) of the Republic of South Africa is applied for the purpose of preventing the development and propagation of coal-dust explosions in underground coal mines. ( Abbreviation abstract )
AC2017

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Livros sobre o assunto "Galleria Minini"

Pennsylvania State University. EMS Museum & Art Gallery. Wonders of work and labor: The Steidle collection of American industrial art. University Park, Pa: Earth and Mineral Sciences Museum & Art Gallery, 2008.

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Betsy, Fahlman, e Schruers Eric Jon, eds. Wonders of work and labor: The Steidle collection of American industrial art. University Park, Pa: Earth and Mineral Sciences Museum & Art Gallery, 2008.

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Center, Walker Art. Expanding the Center: Walker Art Center and Herzog & de Meuron. Minneapolis, MN: Walker Art Center, 2006.

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Expanding the Center: Walker Art Center and Herzog & de Meuron. Minneapolis: Walker Art Center, 2005.

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Antro delle gallerie, indagini di archeologia mineraria in Valganna. British Archaeological Reports Oxford Ltd, 2019.

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Gershman, Gary P. The Legislative Branch of Federal Government. ABC-CLIO, 2008. http://dx.doi.org/10.5040/9798400678240.

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This volume focuses on the U.S. Congress, its history, constitutional powers, daily workings, and the politics that affect its operation. Spanning the history of the federal system of government of the United States, The Legislative Branch of Federal Government: People, Process, and Politics looks at the evolution of the U.S. Congress over the past 225+ years, then describes its current structure, responsibilities, and daily operations. Readers will learn how congressional powers have changed with different interpretations of the Constitution, how a colorful gallery of power brokers (famous and infamous) made its mark, and how politics (both electoral and within the Capitol) affects legislation, oversight efforts, and other actions. The volume includes a "mini-pedia" of alphabetically organized entries and the concluding chapter highlights some fascinating examples of interactions between Congress and the other branches of federal government.

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Flood, Richard, Steve Dietz, Robin Dowden e Sarah Schultz. Expanding the Center: Walker Art Center and Herzog & de Meuron. Walker Art Center, 2006.

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Capítulos de livros sobre o assunto "Galleria Minini"

Crooks, Andrew, Alison Heppenstall, Nick Malleson e Ed Manley. "Agent-Based Modeling and the City: A Gallery of Applications". In Urban Informatics, 885–910. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8983-6_46.

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AbstractAgent-based modeling is a powerful simulation technique that allows one to build artificial worlds and populate these worlds with individual agents. Each agent or actor has unique behaviors and rules which govern their interactions with each other and their environment. It is through these interactions that more macro-phenomena emerge: for example, how individual pedestrians lead to the emergence of crowds. Over the past two decades, with the growth of computational power and data, agent-based models have evolved into one of the main paradigms for urban modeling and for understanding the various processes which shape our cities. Agent-based models have been developed to explore a vast range of urban phenomena from that of micro-movement of pedestrians over seconds to that of urban growth over decades and many other issues in between. In this chapter, we introduce readers to agent-based modeling from simple abstract applications to those representing space utilizing geographical data not only for the creation of the artificial worlds but also for the validation and calibration of such models through a series of example applications. We will then discuss how big data, data mining, and machine learning techniques are advancing the field of agent-based modeling and demonstrate how such data and techniques can be leveraged into these models, giving us a new way to explore cities.

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"mining gallery". In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 878. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_132204.

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"gallery mining". In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 583. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_70120.

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Vikram, Shankar, Dheeraj Kumar e Duvvuri Satya Subrahmanyam. "Support System Design for Deep Coal Mining by Numerical Modeling and a Case Study". In Theory and Practice on Tunnel Engineering [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97840.

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Importance of numerical modeling in mine design gained pace after modern way of approach took birth through many variants. Methods such as Continuum and Discontinuum emerge as most effective in resolving certain issues. Cases such as heterogeneity, prevailing boundary conditions in continuum case and presence of discontinuities in other have provided solutions for many causes. A suitable support system is designed for deep virgin coal mining blocks of Godavari Valley Coalfield in India. This analysis is carried out using numerical modeling technique. The results show that the stresses at an angle to the level galleries are adverse. The level gallery/dip-raise may be oriented at 200 to 400 to reduce roof problems.

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"Figure 2. Support of an exploitation gallery developed by a continuous miner". In International Mining Forum 2004, New Technologies in Underground Mining, Safety in Mines, 194–95. CRC Press, 2004. http://dx.doi.org/10.1201/9780203024133-58.

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Mishra, Pankaj Kumar, e Subhash Kumar. "Wireless Sensor Network for Underground Mining Services Applications". In Sensor Technology, 452–78. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2454-1.ch023.

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Underground mines include a number of challenges due to their hostile milieu. Therefore, geotechnical and environmental monitoring mainly in underground coal mines have always been a critical task to ensure safe working conditions. If the monitoring device is cable based, then it requires an huge amount of cable deployment which can pose not only the high maintenance cost but difficulty in laying out the cable throughout the underground galleries. on the other hand, if it is direct wireless communication between sensing devices and the central processing unit, it is also not so feasible due to the crisscross, uneven and incline path. Therefore, Wireless Sensor Networks grab an opportunity to be deployed in such a hostile environment. Keeping in view, in the present chapter, attempts have been made to discuss the different aspects of wireless sensor network for underground coal mining services applications to overcome the various threats. Further, the best suited logical topology has been identified for the same.

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Mishra, Pankaj Kumar, e Subhash Kumar. "Wireless Sensor Network for Underground Mining Services Applications". In Advances in Wireless Technologies and Telecommunication, 504–30. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0501-3.ch021.

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"Table 1. Basic technical and economic indicators obtained by using the shrinkage from exploitation galleries method". In International Mining Forum 2004, New Technologies in Underground Mining, Safety in Mines, 203. CRC Press, 2004. http://dx.doi.org/10.1201/9780203024133-60.

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"Minding the Body: Robert Morris’s 1971 Tate Gallery Retrospective". In Robert Morris. The MIT Press, 2013. http://dx.doi.org/10.7551/mitpress/8230.003.0010.

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Usher, Phillip John. "Demonic Mines". In Exterranean, 99–112. Fordham University Press, 2019. http://dx.doi.org/10.5422/fordham/9780823284221.003.0006.

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This chapter shifts attention from the hillsides to the shafts and galleries that miners hollow out underground. Via a close reading of Agricola’s De animantibus subterraneis (On Subterranean Creatures) and of sections of De re metallica not discussed in the previous chapter, as well as works by French writer François Garrault and by Paracelsus, this chapter asks if it is possible to understand “belief” in mining spirits as colluding with the chemical realities and medical dangers for humans connected with extracting matter. From this section, it thus emerges that for early modern humanists extraction of matter ex terrawas never just a question of human agents yielding extractive and controlling mastery over inanimate hillsides and underground rock faces.

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Trabalhos de conferências sobre o assunto "Galleria Minini"

Ursyn, Anna. "Data mining". In ACM SIGGRAPH 2004 Art gallery. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1185884.1186011.

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Dave, Kushal, Steve Lawrence e David M. Pennock. "Mining the peanut gallery". In the twelfth international conference. New York, New York, USA: ACM Press, 2003. http://dx.doi.org/10.1145/775152.775226.

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Boanta, Corneliu, Ion Gherghe, Cristian Tomescu, Florin Radoi e Emeric Chiuzan. "USE OF SPECIALIZED PROGRAMS IN ANALYSIS OF THE LONEA MINE VENTILATION NETWORK". In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/1.1/s03.021.

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The Valea Jiului coal basin is the largest mining basin in Romania and includes from east to west the mining fields: Lonea, Lonea-Pilier, Petrila-Sud, Petrila, Livezeni, Salatruc, Dalja, Iscroni, Aninoasa, Vulcan, Paroseni, Lupeni , Lupeni-Sud, Barbateni, Uricani, Valea de Brazi and Campu lui Neag. The first opening works in the Lonea perimeter began with the excavation of the Rascoala gallery, in 1870, a gallery supported by brickwork. Also in the same period, the up-to-date exploitation of the outcrops from the Jiet Valley area and the neighboring valleys is proposed. The general ventilation of the Lonea mine is ascending under the influence of the general depression created by the three main ventilation stations. The analysis performed on the Lonea mine ventilation network leads to the conclusion that the mine ventilation network is particularly complex, a complexity amplified by the large number of air control and regulation constructions. In order to evaluate in perspective the influence of the changes that will occur in the ventilation network of the mine regarding the distribution of air currents both in size and in the direction of their flow, of the locations of the constructions for directing and regulating air flows, as well as the types of ventilation mining constructions that are necessary for the desired distribution, modeling and simulation programs were used that allow the option of visualizing the network in three and two-dimensional system, for the representation of the ventilation network of the Lonea mine. This paper presents the analysis of the complex ventilation network of the Lonea Mine with the help of specialized programs.

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Porzucek, Slawomir. "UNDERGROUND GRAVITY SURVEY FOR EXPLORATION UNKNOWN GALLERIES". In 14th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b11/s5.083.

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Hung, Tsen-Yu, e Peter L. Hagelstein. "Investigations of whisper gallery mirrors for extreme ultraviolet and soft x rays". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tub4.

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We have examined optical constants and predicted reflectivities of candidate surface coatings for whisper gallery mirrors in the extreme ultraviolet (<100-500 Å). Previous work by Vinogradov and co-workers has identified the spectral regime near 100-150 Å to be particularly promising owing to the high whisper gallery mirror reflectivities of the noble metals near their Cooper minima in this regime. We have confirmed this basic result using new optical data, and we have sought surface materials that would extend the range over which the whisper gallery mirrors may be used: 100-500 Å. We have found that substantial whisper gallery mirror reflectivities (near or greater than 50%) are predicted for a variety of elements and that TE peak reflection is larger than TM peak reflection by approximately 10%. However, most of the elements that reflect well have surfaces that are vulnerable to oxygen contamination, which seriously degrades mirror performance. A cryogenic mirror design using a dynamic-solid rare gas surface that has the potential to defeat such surface contaminations will be described, it has peak reflectivity >50% centered near 280 Å.

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BĂTINAŞ, Răzvan, Ionel Sorin RÎNDAȘU-BEURAN, Bogdan Gabriel PITICARI e Cristina Georgiana ZANFIR. "Assessment of accidental water pollution with mine waters in Romania during 2017-2023". In Air and Water – Components of the Environment 2024 Conference Proceedings. Casa Cărţii de Ştiinţă, 2024. http://dx.doi.org/10.24193/awc2024_19.

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Against the background of an increasingly restricted mining activity at the national level, due to the high economic costs, the active and conservation mining objectives sporadically register environmental incidents, which affects mainly the aquatic environment. Thus, in the context of excess rainfall, internal erosion processes associated with dikes and structures related to tailings ponds, poor management of the galleries under conservation can lead to the triggering of accidental pollution with mine waters and wastewaters from tailing ponds of the natural hydrographic network. The analysis of these events was done both from the perspective of spatial and temporal distribution, with a focus on the nature of involved polluting substances and the transfer of pollution waves on the local and regional hydrographic network system. The paper used information from the database of the Romanian National Water Administration, obtained as a result of the post-event investigations carried out through the Water Basin Administrations and their associated laboratories for the period 2017-2023.

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Alvarez, Jorge, e Esteban Hormazabal. "Deep learning applications in overbreak estimation and prediction for tunnels using point cloud data". In The IV Nordic Symposium on Rock Mechanics and Rock Engineering. Jarðtæknifélag Íslands og Jarðgangafélag Íslands, 2023. http://dx.doi.org/10.33112/nrock2023.19.

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"An overbreak during the construction of underground mining tunnels is a common geotechnical and operational problem, which is caused by a combination of geological, geotechnical, structural and operational factors, in which partial or reduced information is available, thus conditioning tunnel stability and consequently the safety of personnel during construction. Additionally, studying an overbreak during early stages allows to validate assumptions applied during engineering stages. Throughout history, different methods have been proposed for the overbreak estimation, these ranging from an empirical, analytical (including numerical modelling), observational or even through the application of machine learning. This work proposes a different approach to most of the studies carried out, which usually consider an average or expected value of overbreak. On this occasion, Deep Learning architectures are used to characterize and predict the complete geometry of the tunnel based off of a training carried out using point clouds of the sectors already excavated. The results obtained show that it is possible to use autoencoder-type architectures to carry out the characterization and prediction of the tunnel’s geometries from point clouds of previously excavated sectors, which has a relevant value for back analysis and potentially predictive analysis, which would in turn impact tunnel stability and/or safety in the different operation cycles during the construction of underground mining galleries and/or tunnels and civil works’ projects and operations."

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Toderas, Mihaela. "ANALYSIS OF THE MAIN FACTORS OF INFLUENCE ON THE STABILITY OF DIRECTIONAL GALLERIES FROM THE SEAM NO.3 BOTTOM, E.M. PETRILA - ROMANIA". In 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/ba1.v1/s03.001.

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Pepler, Giles. "DEVELOPING POLICIES TO STIMULATE THE UPTAKE OF OER IN EUROPE". In eLSE 2014. Editura Universitatii Nationale de Aparare "Carol I", 2014. http://dx.doi.org/10.12753/2066-026x-14-040.

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The POERUP project This paper presents research, analysis and policy recommendations from the POERUP (Policies for OER Up Take) project. The overall aim is to develop policies to promote the uptake of OER, especially across the EU, in all main educational sectors. The project has already created an inventory of more than 400 OER initiatives worldwide, documented on the project wiki. POERUP has produced 11 country reports and 19 mini-reports and is finalising seven case studies of notable OER initiatives. Outcomes of our research In the schools sector, it appears that there are very large numbers of European OERs which are potentially appropriate for K-12 education, a significant proportion of which emanate from museums, galleries, archives and national broadcasters. Although there appears to be some uncertainty concerning the availability of K-12 OER, they form potentially a valuable element in policy responses to austerity and to improve the learner experience in the school sector. However our research reports a range of barriers and disincentives to using OER. Although the development of vocational training has been a subject of enhanced political cooperation at the European level during the past decade, only one of the notable OER initiatives we have catalogued is targeted towards the VET sector and there is little evidence of any national or regional policies on OER for VET. In Universities the various schemes for quality in OER are so far ignored by national HE quality agencies or governments - not surprising when they mostly ignore similar schemes for quality in e-learning, even though e-learning (on- or off-campus) has far greater penetration than OER. Types of policy interventions Our research leads us to recommend three strands of policy interventions: o Linking OER to open access to research and to standards. o Fostering the phenomena that OER is said to facilitate. o Reducing the barriers to creation of innovative institutions and innovative practices. POERUP has produced three draft EU-level policy documents for universities, VET and schools. This paper integrates recommendations from the three sectors. POERUP is also producing policy documents for 5 Member States. Policy recommendations for the Commission and Member States OER is part of the broader fields of e-learning and distance learning and many of our recommendations are applicable in these broader contexts. They are grouped under seven headings and all are mapped against Opening Up Education; recommendations to Member States are specified. Communication and awareness raising: o Continue to promote the OER related initiatives currently being funded. o Facilitate exchange of experiences from national programmes between Member States. o Mount a campaign to educate university and school staff on IPR issues. Funding mechanisms and licensing issues o Ensure that any public outputs from EU programmes are available as open resources. o Continue to promote the availability and accessibility of open resources created through its cultural sector programmes. o Create an innovation fund for the development of online learning resources and assembling/ creating pathways to credentials. o Use Erasmus+ and Horizon 2020 to encourage partnerships between creators of educational content to increase the supply of quality OER and other digital educational materials in different languages, to develop new business models and to develop technical solutions. o Establish a European Hub of Digitally Innovative Education institutions, complemented by a specific European Award of Digital Excellence. o Authorities developing the EHEA should reduce the regulatory barriers against new non-study-time-based modes of provision. o Encourage Member States to increase their scrutiny of the cost basis for university teaching and consider the benefits of output-based funding for qualifications. o Support the development of technological methods to provide more and standardised information on IPR to the users of digital educational content. o Member States should ensure that budgets for digital educational resources are flexible enough to support the development (and maintenance) of openly licensed materials. Quality issues o Require OER to meet (disability) accessibility standards and should ensure that accessibility is a central tenet of all OER programmes and initiatives. o Establish a European quality assurance standard for OER content produced in Europe. o Member States should ensure that OER are allowed to be included on approved instructional materials lists. o Member States should consider establishing and funding an OER evaluation and adoption panel. Teacher training and continuous professional development o Encourage Member States to establish incentive and award schemes for teachers engaged in online professional development of their pedagogic skills, including online learning. o Member States should establish a professional development programme to support CPD on the creation, use and re-use of OER, with coverage of distance learning, MOOCs and IPR issues. Certification and accreditation o Drive forward the development of EQF and encourage Europe-wide validation of learning acquired online. o Foster the development of transnational accrediting agencies and mutual recognition of accreditations across the EU. o Explore and test digital competence frameworks and self-assessment tools for learners, teachers and organisations, including the tailoring of 'open badges' to the needs of learners. Infrastructure issues o Continue its focus on improving the ICT in education infrastructure in Members States to enable them to exploit potential pedagogical and financial advantages of OER. Further research o Develop its understanding of new modes of learning (including online, distance, OER and MOOCs) and how they impact quality assurance and recognition. o Support research into the benefits of OER & sustainable business models. o Launch a platform open to all stakeholders to record and benchmark the digital state of educational institutions.

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Relatórios de organizações sobre o assunto "Galleria Minini"

Sarin, N. K. Operating procedures - flame tests on rigid ducts used for mine ventilation. Natural Resources Canada/CMSS/Information Management, 1987. http://dx.doi.org/10.4095/331775.

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Flammability tests are carried out on a variety of flexible and rigid duct materials used for mine ventilation in order to evaluate their fire-resistance and their suitability in a mining environment. Several tests are available for this purpose, however, CEAL has been using CSA standard C22.2 No. 30 for at least 10 years as part of its program for certification of various mining products. An interim large scale gallery test has been introduced since July, 1985 in order to determine if better repeatability of test results can be obtained. The aim is to eliminate threats to health and safety resulting from the use of such products in the mines. Special attention has been given to the safety precautions and sequence of operations necessary while conducting tests. A standard test recording sheet and test layout diagrams are also presented.

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