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Subsidence rules of underground layer thickness： Lu＇an Coal Base coal mines for different soil as an example, China
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Subsidence rules of underground layer thickness： Lu＇an Coal Base coal mines for different soil as an example, China
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Journal Article
Subsidence rules of underground layer thickness： Lu＇an Coal Base coal mines for different soil as an example, China
2015
Overview
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.
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