综合物探技术在大弯煤矿巷道超前地质预报中的应用

隐伏地质构造的超前预报是预防煤矿突水事故的关键。为查明龙岩市大弯煤矿+10巷道迎头前方构造的发育分布状况及富水性,在分析断层构造的弹性、电性等地球物理特征前提下,结合井下巷道现场实际生产环境,采用震波超前探和瞬变电磁法对+10巷道前方导水地质构造实施综合探测和分析。结果表明:地震与瞬变电磁综合物探方法较单一方法具有较大的成果解释精度优势,其现场观测可充分利用先实施的震波超前探测技术定位断层等构造位置,进而实施瞬变电磁超前探测技术予以补充验证,并根据电阻率异常判别其富水情况,能够为巷道施工和防治水措施的实施提供更准确的地质和水文地质参数。

Application of Comprehensive Geophysical Prospecting in Advanced Detection of Water Conducted Geological Structure

In order to find out water abundance and development distribution situation of water conducted structure within the scope of the+10 roadway ahead 80 meters, based on the analysis of geophysics premise such as elasticity and the electric magnetic differences, combined with the actual production data of roadway, designed optimal observation system, the seismic probing MSP and transient electromagnetic method are used to advanced detection of +10 roadway. The results show that there is no obvious water conducted structure within the detection area, no significant water abundance abnormal phenomenon, it tallies with the actual mining data, the effect is better, prove that the selected detection technology is more reasonable.