高精度重力测量在抚顺煤矿采空区探测中的应用

为查明抚顺煤矿采空区的位置、深度和分布范围，综合考虑城市中影响物探方法的因素，首次在该地区采用高精度重力测量方法进行采空区探测。先通过分析采空区的物性差异，建立理论模型进行正演计算，预研究重力方法的适用性。然后在研究区布设大比例尺面积性高精度重力测量工作，通过对布格重力异常进行位场分离、三维视密度反演和边界识别计算，推断了煤矿采空区的位置、深度、边界及该区内的构造分布。研究结果表明，高精度重力测量方法结合有效的数据处理方法，能在城市煤矿采空区的探测中发挥重要作用。

Application of high precision gravity survey in detecting mined-out areas of Fushun coal mine

In order to find out the location, depth and distribution range of the mined-out areas in Fushun coal mine, and comprehensively considering the factors affecting the geophysical methods in the cities, the method of high-precision gravity survey was firstly used to study the mined-out areas in the area. Firstly, by analyzing the physical differences of the mined-out areas, a theoretical model was established for forward calculation and preliminarily studied on applicability of the gravity method. Then, a large-scale work of high-precision gravity survey was arranged in the study area, and through potential field separation,3D apparent density inversion and boundary identification calculation of the Bouguer gravity anomaly, the location, depth, boundary and tectonic distribution of the mined-out areas were inferred. The research results show that the method of high-precision gravity survey combined with effective data processing method can play an important role in the detection of mined-out areas in urban coal mines.