Study on Surface Deformation Caused by Comprehensive Mining in a Coal Mine in Northwest China
The exploitation of underground coal can cause many problems such as the ground surface subsidence, ground crack, surface damage of the road, and it would affect people travelling, living and life safety seriously. Based on this situation, this paper will point at a typical coal exploitation (including a large-scale coal exploitation and private coal mine exploitation), study the change mechanisms of the surface deformation and the law of the rock movement of underground coal mining conditions, surface stability and safety are verified by the ground surface settlement and horizontal displacement, The result shows that: The mining subsidence caused by the large coal mining has some influences to the highway operation, the surface deformation is stacked by the exploitation of two coal mining, the damage of road surface is mainly caused by the private coal mine exploitation, the long term deformation caused by the large coal mine is not the main influence of the damage of the road and village. The influence of the coal mining is small and the deformation is small, the building does not need maintenance, and can be used normally.
KeywordsCoal mine Vertical subsidence Horizontal displacement Mining surface Rock movement
This work was supported by the Youth Innovation Promotion Association CAS, Science and Technology Service Network Initiative (No. KFJ-STS-ZDTP-015) and the Natural Science Foundation of China (No. 41472286, 41472290, 41402276 and 41672312).
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