基于地表沉陷控制的厚松散层薄基岩下工作面开采方案优化研究

针对厚松散层薄基岩下工作面开采将影响临近地表建筑物安全的问题,结合周边矿井地表沉陷实测成果,研究确定了工作面开采地表沉陷预计参数,并采用概率积分法对工作面未来开采对地表建筑物的影响进行分析,通过开采边界、局部采厚的调整确定了利于建筑物保护的工作面开采参数。结果表明：工作面全部开采或局部限厚均难以保证建筑物安全|工作面分别沿切眼方向、推进方向回缩44m、251m可满足建筑物保护要求。

Study of Influence on Surficial Buildings Caused by Face Mining Under Thick Loose Bed and Thin Bedrock

Aiming at the condition that surficial buildings security would be influenced by the face mining under thick loose bed and thin bedrock, the surface subsidence prediction parameters caused by face mining was studied and determined in combination with the measured results of surface subsidence in surrounding mines. The probability integral method was used to analyze the influence of future mining on surface buildings, and the face mining parameters which conduced to protect the buildings were determined through adjusting the mining boundary and partial mining thick. The results proved that it’s difficult to ensure the safety of the buildings for all mining or partial thickness limitation of the working face, and the working face retracting 44m and 251m along the direction of cutting and advancing respectively could meet the protection requirements of the buildings.