首页|Subsidence rules of underground coal mines for different soil layer thickness:Lu’an Coal Base as an example, China
Subsidence rules of underground coal mines for different soil layer thickness:Lu’an Coal Base as an example, China
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Damage caused by underground coal mining is a serious problem in mining areas in China;therefore, studying and obtaining the rules of ground movement and deformation under different geological conditions is of great importance. The numerical software ANSYS was used in this study to simulate mining processes under two special geological conditions:(1) thick unconsolidated soil layer and thin bedrock;(2) thin soil layer and thick bedrock. The rules for ground movement and deformation for different soil layer to bedrock ratios were obtained. On the basis of these rules, a prediction parameter modified model of the influence function was proposed, which is suitable for different values of unconsolidated soil layer thickness. The prediction results were verified using two sets of typical field data.
Numerical simulationGround movement and deformationPrediction of ground subsidenceSubsidence rulesRatio of soil layer to bedrock
Haifeng Hu、Xugang Lian
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College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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