高密度电法在辽宁大石桥某金矿采空区探测中的应用

Application of High-density Electrical Method in Goaf Detection of a Gold Mine in Dashiqiao,Liaoning Province

辽宁大石桥某金矿因矿权变更等原因导致部分地区地下开采回填情况不明,局部存在采空区威胁矿山生产安全。于区内布设6条高密度电法测线,圈定4处高阻和低阻异常区域,推断异常区域为回填导致的和周围矿体之间产生的电性差异。经坑内钻验证,高密度电法G1线异常区域存在松散回填脉石,异常圈定效果良好,高密度电法测量结果有参考意义。

Due to the change of mining rights and other reasons,the underground mining backfill situation in some areas of a gold mine in Dashiqiao,Liaoning Province,was unclear,and local goaf threatens mine production safety.Six high-density electrical sur‐vey lines were laid in the area,and 4 abnormal areas of high and low resistance were delineated.The abnormal areas were inferred to be electrical differences between the surrounding orebodies and the backfill.It was proved by drilling in the pit that there was loose backfill gangue in abnormal area of G1 line by high-density electrical method,and the anomaly delineation effect was good.The measurement results of high-density electrical method had important reference significance.