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  

Optimization of mining scheme under thick loose layer and thin bedrock based on surface subsidence control

作　　者：孙万明 SUN Wan—ming(CCTEG Coal Mining Research Institute,Beijing 100013,China;Coal Mining and Designing Department,Tiandi Science and Technology Co.,Ltd.,Beijing 100013,China;Coal Mining and Designing Branch,China Coal Research Institute,Beijing 100013,China)

机构地区：[1]中煤科工开采研究院有限公司,北京100013 [2]天地科技股份有限公司开采设计事业部,北京100013 [3]煤炭科学研究总院,开采设计研究分院,北京100013

出　　处：《煤炭工程》2020年第12期7-11,共5页Coal Engineering

摘　　要：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。Aiming at the condition that surficial buildings security would be influenced by the coal mining under thick loose bed and thin bedrock,the surface subsidence prediction parameters caused by mining is studied and determined combining with the measured results of surface subsidence in surrounding mines.The probability integral method is used to analyze the influence of future mining on surface buildings,and the mining parameters which conduce to protecting the buildings are determ in edthrough adjusting the mining boundary and partial mining thickness.The results prove that it’s difficult to ensure the safetyofthe buildings for all mining or partial thickness limitation of the working face,and the working face retracting 44 m and 251 m along the direction of cutting and advancing respectively could meet the protection requirements of the buildings.

关 键 词：厚松散层 薄基岩 地表沉陷 岩移参数 概率积分法 采动影响 

分 类 号：TD325[矿业工程—矿井建设]