急倾斜煤层老采空区物探方法探讨

Discussion on the exploration techniques in steep inclined seams of the abandoned goaf areas

综合物探是煤矿采空区勘察的一种常用手段。文中介绍了急倾斜煤层抽冒塌陷的成因及采空区地球物理特征;通过瞬变电磁法和三维高密度电法在急倾斜煤层采空区的电性特征和试验结果,证明了综合物探对勘探急倾斜煤层采空和冒落范围的有效性,同时提出了相应的采空区异常参数,为项目区土地利用、城市规划和采空区治理提供科学依据,为类似地质采矿条件的采空区勘察提供借鉴。

Integrative geophysical exploration techniques are mainly used to make exploration in the goaf areas of coal mines, based on which, the present paper introduces causes of the caving -in and the subsidence in steep inclined seams, as well as geophysical characteristics in goaf areas. According to experimental results and electrical charac- teristics of the transient electromagnetic method and three - dimensional high - density electrical method in steep in- clined seams of abandoned goaf areas, it proves that integrated exploration techniques are effective to make sure the mining- out and caving- in areas in steep inclined seams. Besides, relative standard exceptions are also raised through experiments in order to provide scientific basis for the land use in project areas, urban planning and the management in goaf areas. Also, it is hoped to be references for the exploration in similar goaf areas.