综合物探在山西省某煤矿采空区探测中的应用

为充分发挥物探方法在探测地下采空区的优势,查明山西省灵石县英武乡某煤矿地下采空区分布。根据测区场地条件,本文提出了地震勘探和氡气测量相结合的综合物探方法,利用反射波地震勘探的多次覆盖技术具有较高的探测精度,既能准确查明地下采空区分布的优势,又可弥补氡异常无法判断裂隙带产状及其地下延伸情况的不足;利用氡气测量受地形影响小、可准确圈定采空区边界和断裂构造位置的优势等优点,既可对地震勘探成果起到佐证作用,又可避免或减少其多解性。从而实现两种物探方法的优势互补作用,取得了较好的探测效果,该组合模式可为同类场地条件下探测地下煤层采空区提供有意义的借鉴。

Application of Comprehensive Geophysical Prospecting Method in the Detection of Coal Mined-out Areas in Lingshi,Shanxi

To take full advantage of geophysical prospecting method in the detection of coal mined-out area and ascertain the distribution of coal mined-out area in Lingshi county of Shanxi province, this paper presents a comprehensive geophysical prospecting method based on the conditions of the study area which is the combination of seismic exploration and ra- don gas measurement. This method uses the technique of multiple coverage of reflected wave seismic exploration which has high detection accuracy. And it not only can accurately ascertain the distribution of mined-out area, but also make up the insufficiency of the occur- rence of the fractured zones and the extension which can not be judged by radon gas meas- urement. Taking advantage of radon gas measurement which can he little affected by the terrain, accurately identifying the boundary of mined-out area and the location of fault, seismic exploration results can be supported and multiplicity of solutions can be avoided. These two methods can be complementary and obtain a good prospecting effect. This corn bination provides a guidance for detecting other coal mined-out areas in similar conditions.