基于阵列式并行电法的掘进前方富水性探测

Detection on Water Abundance Ahead of Tunneling Based on Aligned Array Parallel Electrical Method

阵列式并行电法突破了传统电法逐点供电、测量的局限性,实现了阵列式单极、多极供电及同步并行测量的方法改进。通过巷道空腔影响及干扰校正,建立偏移模型并进行偏移叠加及网格化处理,优化超前探测地质异常提取技术,可提高超前探准确性和可靠性。龙岩市小井尖煤矿探测应用实例证明:该方法用于福建小煤矿掘进巷道迎头前方含水性超前预测是可行的,预报结果与巷道掘进的实际情况吻合。

Aligned array parallel electrical method breaks through the limitation of point-by-point power supply and measurement of the traditional electric method,and realizes the method improvement of single pole,multipole power supply and synchronous parallel measurement.Based on the influence of tunnel cavity and interference correction,the migration model is established and the migration stack and grid processing are carried out,and the anomaly extraction technology of advanced detection can be optimized,with the accuracy and reliability of advanced detection improved.Through the application example of Xiaojingjian Coal Mine in Longyan,it is proved that this method is feasible for the prediction of water abundance ahead of the roadway of small coal mine in Fujian Province.The forecast result is in accordance with the actual situation of roadway tunneling.