高密度电法在长引水工程隐伏断裂带探测中的应用

Application of the High-density Resistivity Method to Prospecting of a Buried Fracture Zone for Construction of a Hydraulic Project with a Long Water Diversion Way

隐伏断裂作为一种典型的不良地质现象在工程建设中的危害越来越明显。在云南省目前已建成的长线路引水工程牛栏江-滇池补水工程线路寻甸县小龙潭隧洞和羊街倒虹吸段采用高密度电法做了大量的勘察工作。通过此次探测,查明了测区内著名的隐伏活动断裂-小江断裂带东支和西支的发育规模。根据此次探测的成果,认为高密度电法在隐伏断裂探测中效果较好。

Being as a typical unfavorable geological phenomenon the harm of buried fracture is getting more and more clear in construction of a civil engineering project.The high-density resistivity method was used to carry out a lot of prospecting work for the Xiaolongtan tunnel in Xundian County and the Yangjie inverted siphon section of the currently completed Niulanjiang-Dianchi Lake water replenishment project with a long water diversion line in Yunnan province.The prospecting has found out the development scale of both east branch and west branch of the well-known buried active fracture-Xiaojiang fracture zone in the prospecting region.The prospecting proved that the high-density method is more effective in prospecting of buried fractures.