齐大山铁矿南帮含水构造带探测研究

为解决采空区突发涌水给矿山安全生产带来的安全威胁,以齐大山铁矿为研究对象,以高密度电阻率法含水构造带理论模型的正演模拟研究为基础,运用高密度电阻率法对采场南帮含水构造带的异常范围进行了圈定;运用瞬变电磁法进行了二次探测,并对高密度电阻率法所圈定的异常范围进行了验证。研究表明:含水构造带显示为低阻异常特征,在高密度电阻率法探测成果图中显示的两处低阻异常与含水构造带理论模型的正演模拟结果一致;同时,在瞬变电磁法探测成果图中显示的低阻区域均在高密度电阻率法所圈定的低阻异常范围内,二者相互验证,这两处低阻异常均为含水构造带的地球物理异常特征的显示,表明采用高密度电阻率法和瞬变电磁法组合识别技术可实现对隐伏含水构造带的先导性探测。

Study on the Detection of Water-bearing Structural Zones in the South Side of Qidashan Iron Mine

In order to deal with the great threat caused by water gushing in goaf to mine safety production,taking Qi-dashan Iron Mine as the study example,based on the forward simulation results of the theoretical model of water-bearing struc-tural zones by high density resistivity method,uses the high density resistivity method to delineate the abnormal range of thewater-bearing structural zones in the south side of the stope,and adopts the transient electromagnetic method to carry on thesecondary detection to verify the abnormal range defined by the high density resistance method.The study results show that thewater-bearing structural zones is characterized by low resistance anomaly,and the two low-resistance anomalies shown in theresults of the high-density resistivity method are similar to the forward modeling results of the theoretical model of water-bear-ing structural zones.At the same time,the low resistance regions shown in the results of transient electromagnetic method areall in the range of low resistance anomalies defined by high density resistance method,and the two verify each other.It isshown that the two low resistance anomalies are the geophysical anomalies of the water-bearing structural zones,and the geo-physical exploration technique combined with high density resistivity method and transient electromagnetic method can realizethe pilot detection of hidden water-bearing structural zones.