工作面内地质异常区电法探测新技术

双巷并行透视电法探测工作面内地质异常区为新近发展的电法技术。该方法在工作面双巷中分别布置电法测线,所有电极均布置在巷帮煤壁中部腰线位置,无穷远供电极(B极)布置在对面巷道,利用网络并行电法仪采集电法数据,通过电阻率层析成像技术,可得到工作面双巷间电阻率变化情况,分析出工作面煤层内的地质异常区性质及分布范围。张集矿综采工作面探测实例表明,该方法较好地查明了工作面内薄煤区及夹矸增厚区的展布范围,为工作面内地质异常区探测提供了新的探测手段。

New Exploration Technology of Electrical Method for Geological Abnormity Within Coal Face

The two-gateways parallel electrical method is a new exploration technology for geological abnormity within coal face.The two-gateways two-dimention resistivity tomography fully makes use of the electrical data collected by the network parallel electrical instrument from the survey lines of both gateways,with the electrodes set in the coal wall along the centre lines in one gateway,while the infinite current electrode set in the other gateway,then,the resistivity variations between the two gateways are acqu...