mining induced coal

mining induced coal

Mining-Induced Coal Permeability Change Under Different ...

2016-5-4 · The mining-induced coal permeability under the different mining layouts can be analyzed according to Fig. 6. Table 2 shows that the average initial permeability of the coal specimens is approximately 4.77 × 10 −17 m 2. The MPCR

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Fault-Induced Coal Burst Mechanism under Mining

2021-5-1 · Li et al. divided fault-induced coal burst into three types by introducing the new fault pillar concept (where a fault pillar is a coal pillar between the mining space and the fault): The three suggested types of coal burst were fault-slip-induced, pillar-failure-induced, and those induced by their interaction.

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Fault-Induced Coal Burst Mechanism under Mining

Li et al. [5] divided fault-induced coal burst into three types by introducing the new fault pillar concept (where a fault pillar is a coal pillar between the mining space and the fault): The three suggested types of coal burst were fault-slip-induced, pillar-failureinduced, and those induced by their interaction.

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On the strong earthquakes induced by deep coal mining ...

2021-10-20 · Jiang Y, Wang T, Zhao Y, Wang W (2013) Experimental study on the mechanisms of fault reactivation and coal bumps induced by mining. J Coal Sci Eng 19(7):507–513. Article Google Scholar Ju J, Xu J (2013) Structural characteristics of key strata and strata behaviour of a fully mechanized longwall face with 7.0m height chocks.

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Coal Mining Induced Seismicity in the Ruhr Area, Germany ...

2009-12-4 · Over the last 25 years mining-induced seismicity in the Ruhr area has continuously been monitored by the Ruhr-University Bochum. About 1,000 seismic events with local magnitudes between 0.7 ≤ M L ≤ 3.3 are located every year. For example, 1,336 events were located in 2006. General characteristics of induced seismicity in the entire Ruhr area are

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A zoning model for coal mining - induced strata

2017-4-1 · The coal mining - induced microseismic event concentration zone displays an elliptical distribution in the plane view (as shown in Fig. 9a), which is consistent with the so-called “O” ring proposed by Liu 16, and displays an inverted trapezoid distribution in the side view (as shown in

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Quantitative determination of mining-induced

2018-11-1 · Mining induced stress, especially discontinuous redistribution and stress drop, is a major issue of structural stability in deep coal mining. Only considering the yield criterion as the continuous stress equation solution without failure criterion

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A review of mining-induced seismicity in China

2014-9-22 · stresses and mining-induced stresses away from mine openings and those caused by the sudden failure of rock masses due to stress concentration in the mining area. Rockbursts (or coal bumps in coalmines) are particular cases of seismic events induced by mining activity that cause injury to persons, or damage to underground workings.

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Theoretical Analysis of Mining Induced Overburden ...

2021-3-30 · The overburden subsidence induced by underground mining has caused great damage to the ecological environmental and seriously threatens the safe use of underground structures. Focusing on the overburden subsidence, this paper uses theoretical analysis method to study the overburden subsidence boundary with a horizontal coal seam mining. In this

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Mining-Induced Coal Permeability Change Under Different ...

The mining-induced coal permeability variation under the three typical mining layouts is quantitatively analyzed using the MPCR based on the test

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Mining-Induced Coal Permeability Change Under Different ...

To comprehensively understand the mining-induced coal permeability change, a series of laboratory unloading experiments are conducted based on a simplifying assumption of the actual mining-induced stress evolution processes of three typical longwall mining layouts in China, i.e., non-pillar mining (NM), top-coal caving mining (TCM) and protective coal-seam mining (PCM).

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Fault-Induced Coal Burst Mechanism under Mining

Li et al. [5] divided fault-induced coal burst into three types by introducing the new fault pillar concept (where a fault pillar is a coal pillar between the mining space and the fault): The three suggested types of coal burst were fault-slip-induced, pillar-failureinduced, and those induced by their interaction.

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The Relationship between Mining-Induced Stress and

2021-8-10 · The Relationship between Mining-Induced Stress and Coal Gas under an Optimized Support Scheme: A Case Study in the Guanyinshan Coal Mine, China Tianjun Zhang,1 Jiaokun Wu ,1,2,3 Yong Chen ,2,3,4 Hong Ding,2,3 Hongyu Ma,2,3 and Renjun Feng2,3 1College of Safety Science and Engineering, Xi’an University of Science and Technology, Shaanxi 710054 ...

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Fault-Induced Coal Burst Mechanism under Mining

2021-7-5 · Research Coal Technology—Article Fault-Induced Coal Burst Mechanism under Mining-Induced Static and Dynamic Stresses Wu Caia,b,⇑, Linming Doua, Guangyao Sic, Yawei Hua a State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China bDepartment of Earth Science

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【coal mining induced collapse】的中文翻译和相关专业术语 ...

2017-8-7 · 【coal mining induced collapse】的中文译词：采煤塌陷; 【coal mining induced collapse】的相关专业术语翻译：environmental hazards induced by coal mining 采动损害; coal mining induced collapse 采煤塌陷; old coal mining area 煤矿采空区; coal mining

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Coal Mining Induced Seismicity in the Ruhr Area, Germany ...

2010-2-1 · Over the last 25 years mining-induced seismicity in the Ruhr area has continuously been monitored by the Ruhr-University Bochum. About 1,000 seismic events with local magnitudes between 0.7 ≤ ML ≤ 3.3 are located every year. For example, 1,336 events were located in 2006. General characteristics of induced seismicity in the entire Ruhr area are

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Extraction of Irregularly Shaped Coal Mining Area Induced ...

Underground coal mining-induced ground subsidence (or major ground vertical settlement) is a major concern to the mining industry, government and people affected. Based on the probability integral method, this paper presents a new ground subsidence prediction method for predicting irregularly shaped coal mining area extraction-induced ground subsidence.

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Shear Mechanism for Mining-Induced Fractures Applied

2012-8-29 · Although mining-induced fractures are well known in coal mines, where they are associated with cave development and roof, wall, and pillar instability, our understanding of fractures and fracture zone development has been lacking. The classic explanation of mining-induced fractures is that they result from stress alone and

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Evolution of mining‐induced stress in fully mechanized top ...

The studies of top‐coal caving directly determine operational parameters of FMTC on site, 4, 5 and broken lumpiness of top‐coal directly affects recovery of top‐coal, 6-8 while failure of top‐coal is a mechanical response under mining‐induced stress. 9 Therefore, the evolution of mining‐induced stresses is one of the key problems ...

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Mining-Induced Coal Permeability Change Under Different ...

The mining-induced coal permeability variation under the three typical mining layouts is quantitatively analyzed using the MPCR based on the test

Read More

Mining-Induced Coal Permeability Change Under Different ...

To comprehensively understand the mining-induced coal permeability change, a series of laboratory unloading experiments are conducted based on a simplifying assumption of the actual mining-induced stress evolution processes of three typical longwall mining layouts in China, i.e., non-pillar mining (NM), top-coal caving mining (TCM) and protective coal-seam mining (PCM).

Read More

The Relationship between Mining-Induced Stress and

2021-8-10 · The Relationship between Mining-Induced Stress and Coal Gas under an Optimized Support Scheme: A Case Study in the Guanyinshan Coal Mine, China Tianjun Zhang,1 Jiaokun Wu ,1,2,3 Yong Chen ,2,3,4 Hong Ding,2,3 Hongyu Ma,2,3 and Renjun Feng2,3 1College of Safety Science and Engineering, Xi’an University of Science and Technology, Shaanxi 710054 ...

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Mining-Induced Pressure-Relief Mechanism of Coal-Rock ...

2021-7-12 · Mining-Induced Pressure-Relief Mechanism of Coal-Rock Mass for Different Protective Layer Mining Advances in Materials Science and Engineering ( IF 1.726) Pub Date : 2021-07-12, DOI: Xiang Cheng, Guangming Zhao, Yingming Li, Xiangrui Meng, Qingyi Tu, Shunjie Huang, Zhihong Qin

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Fault-Induced Coal Burst Mechanism under Mining

2021-7-5 · Research Coal Technology—Article Fault-Induced Coal Burst Mechanism under Mining-Induced Static and Dynamic Stresses Wu Caia,b,⇑, Linming Doua, Guangyao Sic, Yawei Hua a State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China bDepartment of Earth Science

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Coal Mining Induced Seismicity in the Ruhr Area, Germany ...

2010-2-1 · Over the last 25 years mining-induced seismicity in the Ruhr area has continuously been monitored by the Ruhr-University Bochum. About 1,000 seismic events with local magnitudes between 0.7 ≤ ML ≤ 3.3 are located every year. For example, 1,336 events were located in 2006. General characteristics of induced seismicity in the entire Ruhr area are

Read More

【coal mining induced collapse】的中文翻译和相关专业术语 ...

2017-8-7 · 【coal mining induced collapse】的中文译词：采煤塌陷; 【coal mining induced collapse】的相关专业术语翻译：environmental hazards induced by coal mining 采动损害; coal mining induced collapse 采煤塌陷; old coal mining area 煤矿采空区; coal mining

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Fault-Induced Coal Burst Mechanism under Mining

摘要 Fault is a common geological structure that has been revealed in the process of underground coal excavation and mining.The nature of its discontinuous structure controls the deformation,damage,and mechanics of the coal or rock mass.The interaction between this discontinuous structure and mining activities is a key factor that dominates fault reactivation

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DEVELOPMENT MECHANISM OF MINING-INDUCED

2018-11-23 · Mining-induced ground fissure (MIGF) contributes to vegetation deterioration, landslides and other natural hazards. The study is an attempt to reveal the development type, dynamic development process, and formation mechanism of MIGF for MIGF-induced natural hazard prevention of shallow burial coal seam mining.

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Mining-Induced Displacement and Resettlement: Social ...

2012-9-16 · The problem of compulsory resettlement is also a consequence of open pit coal mining in European countries like Germany and Poland. Although mining-induced displacement is a global phenomenon, problems experienced by the displacees in many parts of the world differ greatly. The largest portion of the displacement is caused by open-pit mining ...

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