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Process of overburden failure in steeply inclined multi-seam mining: insights from physical modelling [PDF]

Royal Society Open Science, 2021
Ground surface damage caused by steeply inclined coal seam mining is widely distributed in China, but there is little research on the failure process and movement mechanism of strata induced by steeply inclined multi-seam mining.
Hai Wang, Yan Qin, Hanbin Wang, Yu Chen, Xuancheng Liu   +4 more
doaj   +4 more sources

Research on a Space–Time Continuous Sensing System for Overburden Deformation and Failure during Coal Mining

Sensors, 2023
Underground coal mining can cause the deformation, failure, and collapse of the overlying rock mass of a coal seam. If the mining design, monitoring, early warning, or emergency disposal are improper, in that case, it can often lead to mining disasters ...
Gang Cheng, Zhenxue Wang, Bin Shi, Wu Zhu, Tianbin Li   +4 more
doaj   +5 more sources

Overburden failure characteristics and fracture evolution rule under repeated mining with multiple key strata control [PDF]

Scientific Reports
To master the overburden structure failure and fracture evolution law under multi-key stratum control during repeated mining in coal seams, this study takes the superimposed mining faces of 6# and 7# coal seams in Xinjiang mining area as the research ...
Sun Chaoshang, Shi Chaoyang, Zhu Zhiming, Lin Haixiao, Li Zhenhua, Du Feng, Cao Zhengzheng, Lu Pengtao, Liu Lin   +8 more
doaj   +3 more sources

Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method

Journal of Rock Mechanics and Geotechnical Engineering, 2022
Understanding the spatiotemporal evolution of overburden deformation during coal mining is still a challenge in engineering practice due to the limitation of monitoring techniques.
Gang Cheng, Wentao Xu, Bin Shi, Jinghong Wu, Binyang Sun, Honghu Zhu   +5 more
doaj   +3 more sources

Study on overburden failure law and surrounding rock deformation control technology of mining through fault. [PDF]

PLoS One, 2022
In the mining process of working face, the additional stress generated by the fault changes the law of roadway deformation and failure as well as the law of overburden failure. Aiming at the influence of the fault in the mining process of working face, this study introduced the geological strength index (GSI) to analyze the stress distribution in the ...
Zeng C, Zhou Y, Zhang L, Mao D, Bai K.
europepmc   +6 more sources

Research on Overburden Failure Characteristics Based on the Theory of Plates and Shells

Sustainability, 2022
To reveal the overburden failure characteristics during backfill mining, theoretical analysis based on the theory of plates and shells and field measurements were combined. Based on the theory of plates and shells, a mechanical model for the overburden failure mechanism during backfill mining was established, through which the fracture conditions of ...
Hongyan Qin, Zhenhua Ouyang, Haiyang Yi   +2 more
exaly   +2 more sources

Investigation on overburden failure and subsurface subsidence characteristics in fully mechanized top-coal caving of “Three-Soft” Thick coal seams [PDF]

Scientific Reports
This study investigates overburden deformation and surface subsidence mechanisms in fully mechanized top-coal caving (FMTC) mining of “three-soft” (soft coal seam, soft roof, and soft floor) thick coal seams through physical similarity modeling ...
Wenbing Guo, Weiqiang Yang, Zhibo Ge, Bibi Wang, Longxiang Li   +4 more
doaj   +2 more sources

Characteristics of overburden failure and evolution of fractures in fully mechanized top coal mining face. [PDF]

Sci Rep
Abstract The characteristics of overlying strata failure and the evolution law of fractures during coal mining are of great significance for mine water prevention and gas control. To further study the overlying strata failure characteristics and fracture evolution in fully mechanized top-coal caving (FMTC) mining faces, a Shanxi coal ...
Wang X, Liu F.
europepmc   +3 more sources

Regional Division and Its Criteria of Mining Fractures Based on Overburden Critical Failure

Sustainability, 2022
Mining fracture is the key factor in realizing water-conservation mining, stability evaluation of coal mining subsidence areas, and accurate restoration of the surface eco-environment. To clarify, the evolution and distribution of mining fractures, based on the key strata theory and the mining degree of overburden failure, the contact state of rock ...
Erhu Bai, Wenbing Guo, Yi Tan
exaly   +2 more sources

Overburden movement laws in thin bedrock workfaces under thick backfilled loose bodies [PDF]

Scientific Reports
A detailed investigation was conducted on the geological conditions of thin bedrock workfaces under thick backfilled loose bodies in the first panel of the 22-upper coal seam at Shigetai Coal Mine.
Wenxiang Zheng, Chao Wei, Shuai Guo, Zhipeng Zhuang, Changhui Shi   +4 more
doaj   +2 more sources