电位法超前探测在富水地下矿山施工中的应用

摘要

In the construction process of water-rich underground mine,the advanced water probing is an important security measure for the mine and the basis for support design.The traditional way commonly adopts drilling,which needs a tedious working process and occupies the tunnel face for a long time so the construction and tunneling speed is greatly influenced.In order to improve the efficiency,various geophysical methods such as TSP,geological radar,infrared detection,high density electric method are compared with each other.According to the actual situation of the mine,the high-density potential method was used for advanced detection and compared with the reality after tunneling.The comparison indicated that the high-density potential method is practical in applications with relatively wide detection range and accurate and reliable detection results.This advanced detection technology is recommended to be promoted in the mine.%地下水丰富的矿山施工过程中,超前探水工作是矿山施工重要的安全保障措施及支护设计依据,传统的探水工作普遍采用钻探方式,工序繁琐、占用掌子面时间较长,对施工掘进速度影响较大.为提高效率,在比较各种物探方法如TSP、地质雷达、红外探测、高密度电位法后,根据矿山实际工程情况,采用高密度电位法仪器进行超前探测,并将结果与掘进后实际情况进行对比.探测结果对比表明,高密度电位法在实际应用较好,探测范围比较广,探测结果准确可靠,该超前探测技术可在矿山推广使用.