关键词: 采空区, 类型划分, 综合物探, 调查与踏勘, 临汾矿区

Abstract: In order to investigate the goafs distribution in Linfen mining area, based on comprehensive detection application practices, the types classification were analyzed and surface survey were carried out. Then the comprehensive geological detection methods were proposed combined Time domain electromagnetic method, Controlled-source audio magnetotellurics method with 3D seismic method. The results showed that Linfen mining area belongs to Hedong, Huoxi and Qinshui Coalfield of China. In 42 coal mines, the longwall mining goafs distribution were clearly while such shotwall mining goafs as room and pillar method goas distribution were unknown and the roofs were partly caved or no-caved. The goafs of Linfen mining area were usually located in coalseam2 and coalseam 3, and they were continuous, multi-layers, nearly horizontal or slowly inclined, shallow or mid-deep buried, and large- scale area; through surface survey, there were 142 closed shafts or small kilns, 333 reservoirs, 207 springs, 158 surface cracks or subsidence. The comprehensive geophysical detection application practices and case analysis showed reliable results and good affect.