地质雷达在乌东煤矿急斜煤层地质异常区的应用

Application of ground penetrating radar in geological anomaly area in steep coal seam in Wudong Coal Mine

乌东煤矿+600m水平南、北掘进巷位于原曙光村煤矿老旧采空区下方,所形成的老旧采空区由于历史地质资料的缺失具有无规则性和隐蔽性,对目前安全回采造成极大的隐患。针对这一问题,确定采用SIR-20地质雷达对老旧采空区的空间正分布进行探测以明确地质异常结构特征。探测结果表明在走向2800~2850m、距巷道上方约2.5~3.5m范围内的煤层含水量丰富,在走向2680~2650m、距巷道上方1.4~1.7m范围内为老旧采空区,煤岩体破碎严重,裂隙发育明显。

The southern and northern tunneling roadway on ＋600m level in Wudong Mine is located below the old goaf in former Shuguangcun Coal Mine,which is the hidden trouble for cur-rent safety mining.Aiming at this problem,the SIR-20 GPR is adopted to detect the positive spatial distribution of the old goaf to clear the features of geological anomaly structure.Survey re-sults show that the coal seam has high moisture,which ranges between 2800 m^2850m on the strike and 2.5 m^3.5 m above the roadway;the coal seam fractures develop with rich water in rock body in the scope of 2680~2650 m on the strike and 1.1 m^1.7 m above the roadway;It＆#39;s the old goaf in the scope of 2680~2650 m on the strike and 1.4~1.7m above the roadway where serious rupture and obvious fractures developing exist in the coal seam.