直流电法布极方式对巷道超前探测精度研究

Study on Advance Detection Accuracy of Mine Roadway with Electrode Distribution Mode of DC Electrical Method

通过直流电法电极布置几何分析,提出了发射电极与测量电极极距关系公式。对于可能存在地质异常的重点区域可同时调整二者极距,通过增加探测密度的方式提高探测精度。经研究发现电极随布置数量的增加,其探测精度随之提高。通过单倍与多倍极距对比实验,得出可通过调整极距提高探测精度,解决了直流电法在测量精度不高、定位不准等方面的难题,提高了煤矿生产安全。

With the geometric analysis on the electrode layout of the DC electric method, the paper provided a formula of the electrode distance between the emitting electrode and the measuring electrode. In the key area possibly with abnormal geology, a distance between two electrodes could be adjusted simultaneously. The detection accuracy could be improved with a method to increase the diction density. The study conducted showed that with the layout number increased, the detection accuracy of the electrode would be improved. In eomparison with the single time distance and multi times distance of the electrodes, the detection accuracy improved with the adjustment of the electrode distance could solve the poor measuring accuracy, poor positioning and other difficult problems of the DC electric method and could improve the mine production safety.