煤矿“三软”煤层开采地表移动规律及机理研究

掌握岩层与地表移动移动规律是进行“三下”采煤研究、煤矿采动损害评价及建筑物保护的重要依据。“三软”煤层储量在我国煤矿开采中占据了相当大的比例，其采动地表移动规律有其自身特点。以梁北矿典型综采工作面为研究对象，通过建立地表移动观测站，进行现场实测，分析了“三软”煤层综放开采地表移动与变形规律。基于关键层理论，阐明了“三软”煤层综放开采覆岩破断机理，理论解释了工作面开采后地表下沉机理，为梁北煤矿“三软”煤层综放开采及类似地质条件矿区的地表破坏预计及控制提供参考。

Research on surface movement law and mechanism of "Three Soft" coal seam mining in coal mine

Mastering the movement laws of rock strata and ground surface is an important basis for "three-down" coal mining research,coal mining damage evaluation and building protection.The reserves of "Three Soft" coal seams occupy a considerable proportion in my country′s coal mining,and its mining surface movement law had its own characteristics.Taking the typical fully-mechanized mining face of Liangbei Mine as the research object,through the establishment of a surface mobile observation station and field measurement,the law of surface movement and deformation of fully-mechanized caving mining of "Three Soft" coal seams was analyzed.Based on the key layer theory,the breaking mechanism of the overlying rock in the fully-mechanized caving mining of the "three soft" coal seams was clarified,and the mechanism of the surface subsidence after the mining face was theoretically explained.Provide reference for surface damage prediction and control