三维并行电法勘探技术与矿井水害探查  

Three-dimensional parallel electric surveying and its applications in water disaster exploration in coal mines

作　　者：刘盛东[1,2] 吴荣新[3] 张平松[3] 曹煜[4] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学资源与地球科学学院,江苏徐州221116 [3]安徽理工大学地球与环境学院,安徽淮南232001 [4]安徽惠洲地下灾害研究设计院,安徽合肥230088

出　　处：《煤炭学报》2009年第7期927-932,共6页Journal of China Coal Society

基　　金：国家重点基础研究发展计划(973)基金资助项目(2007CB209400);国家重点基础研究发展计划(973)基金资助项目(2006CB202209)

摘　　要：应用自主开发的网络并行电法仪及其三维采集系统,对布置在矿井工作面不同巷道内的所有电极进行电流、电压数据同步实时采集,实现了地下空间的三维电法同步测量.然后运用三维电阻率反演技术,得到矿井工作面内三维空间的电阻率分布特征,为工作面非巷道揭露区的水文地质与工程地质探查提供了有效的地球物理勘查手段.该技术突破了目前矿井直流电法勘探的局限性,首次取得了煤矿工作面底板完整三维电场参数与视电阻率数据体.通过多个矿井工作面的探采对比,三维反演解释结果客观地反映了工作面内底板的隐伏水源空间位置,为矿井防治水工程提供了准确信息.A self-developed network parallel electricity instrument and its survey acquisition system were used to synchronously measure current and voltage over whole electrodes arranged in the laneways of the mine work face, realized 3 D electrical synchronous survey of subsurface. Then the 3 D resistivity structure of the covered area in the working face was obtained using 3 D resistivity inversion technique. It is an effective geophysical prospecting method for the investigations of hydrological and engineering geology in the work face. The technology breaks through the limit of 2D mine electrical survey, got the 3D apparent electrical data in the base plate of the work face for the first time. Applications in different mines working faces show that the water disaster in the base plate can be well located using the technique, it offers accurate information for the mine water disaster prevention and control.

关 键 词：电法勘探 矿井水害 网络并行电法仪 电阻率 

分 类 号：P631.3[天文地球—地质矿产勘探] TD745[天文地球—地质学]