综合物探技术在石灰石矿山溶洞探测的应用研究--以广西贵港市定祥山石灰石矿山为例

Application of comprehensive geophysical exploration technology on karst cave detection at a limestone mine:An example of Dingxiangshan limestone mine in Guigang City of Guangxi

为掌握广西贵港市定祥山石灰石矿山的地下岩溶发育的实际情况,利用综合物探技术对矿山主要采掘带、运矿路及安全平台等区域进行探测,工作中对多种物探技术(地质雷达、地震映像法、钻孔电视摄像、高密度电阻率法)进行了试验对比研究。结果表明,比较而言,地质雷达更适合此类石灰石矿山的岩溶勘察。综合应用时,先以地质雷达(高频、低频天线组合)为主取得成果异常地段,在地形地貌条件允许的区域辅以地震映像法、钻孔电视摄像等多种物探方法,如果接地条件较好,配合高密度电阻率法在成果异常段同步开展验证工作。探测结果表明综合物探技术在对影响石灰石矿山安全生产的溶洞隐患探测中有着良好的应用前景。

In order to understand and master the actual situation of underground karst cave development at Dingxiangshan limestone mine in Guigang City of Guangxi,the comprehensive geophysical exploration technology is applied to detect the main mining belt,ore transportation road and safety platform in the mine.In the work,a variety of geophysical exploration methods,geological radar,seismic imaging method,borehole television camera and high-density resistivity method,are tested and compared.The study result shows that geological radar method is more suitable for karst cave exploration in such limestone mines.For the comprehensive application,the geological radar,with the combination of high-frequency and low-frequency antennas method is mainly used to obtain the abnormal section of the result,and the seismic imaging method,drilling hole television camera and other geophysical exploration methods are supplemented in the area where the topographic and geomorphic condition is allowed.If the grounding condition is suitable,the verification engineering work is carried out synchronously in the abnormal section of the results in cooperation with the high-density resistivity method.The detection result indicates that the comprehensive geophysical exploration technology has a good application prospect in the detection of hidden dangerous caves affecting the safe production of limestone mines.