巷道直流电测深在探测陷落柱中的应用

提出了用不同方位巷道三极直流电测深法探测陷落柱位置及其富水性的技术。根据理论模型的数值模拟结果，总结了地质异常体在不同观测方位巷道电测深视电阻率断面图上的异常特征及电极距与探测距离间的关系。在孔庄煤矿7192工作面进行了陷落柱实际探测，探测结果与实际揭露边界误差小于5m．结果表明，采用巷道顶板、底板及侧帮电测深的全方位测深模式能够查明地质异常体的空间赋存形态、富水性以及与顶板或底板含水层是否存在水力联系等．

Application of Roadway DC Electrical Sounding in Detecting Collapse-Columns

Method and technique of using 3-electrode electrical sounding at different positions in a roadway for detecting the location and water content of collapse-column was put forward. Based on the digital simulation and model analysis, the anomaly characterization of apparent resistivity section obtained by the sounding at different positions, and the relationship between electrode space and exploration depth were summarized. The difference between interpreted and practical boundary was not more than 5 m in the experiment carried out at the working face No. 7192 in Kongzhuang Mine. The results show that the full-azimuth 3-electrods electrical soundings can find out the geometrical shape and water content of the geological abnormal body, and make clear its hydrological relation with the main water containing layers.