Geological exploration techniques used in deep coalmining in China
WU Qin-bao 1, CHEN Tong-jun 2, CHEN Feng-yun 2 (1. Geophysical Prospecting and Surveying Team of Shandong Coal Geological Bureau, Taian 271021,China; 2.China University of Mining & Technology, Xuzhou 221008, China)
Coalmines in eastern China have been the level of deep mining. In high-productive high-efficient coalmines, faults with about 5m throw and folds with about 5m range in coal seams need to be detected, spatial distribution of the subsided columns and mined areas need to be located, lithology of coal roof/floor, with close relation to hydrological and gas-bursting conditions, need to be determined. In this paper, geological exploration techniques used in deep coalmining are generalized, and three cases of detecting geological structure, locating fractured zones and predicting gas distribution, which different surveying methods are applied, are given.
【CateGory Index】： P631