高铁运营隧道岩溶探测及处置方案研究  

Study on karst detection and disposal scheme of high-speed railway tunnel

作　　者：蔡盛[1] Cai Sheng(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《工程勘察》2024年第10期84-88,共5页Geotechnical Investigation & Surveying

基　　金：国铁集团科研开发项目(P2022G054).

摘　　要：随着我国高速铁路的快速发展,高铁运营安全越来越重要。当暴雨、地震、人为扰动等原因导致地质灾害发生时,如何准确、快速地探明地质灾害对既有隧道的影响情况,是治理铁路病害的关键所在。文章结合某高铁隧道泄水洞涌泥涌砂病害探测实例,基于施工迅速、操作方便、不影响运营为原则,提出了“地质调查与勘探结合、地面与地下相结合、纵向与横向结合”的综合探测方法,以地面大地电磁宏观探测结果为指导,在既有正洞边墙采用地质雷达法和瞬变电磁法辅助探测,在泄水洞掌子面采用弹性波法和瞬变电磁法进行超前地质预报,进行多方向多尺度的综合探测与分析,最后通过超前水平钻进行验证。通过该方法体系,宏观上准确、快速地查明了地质病害的影响范围,为病害整治解决方案提供依据。With the rapid development of high-speed railway in China,the safety of high-speed railway operation is becoming more and more important.When geological disasters occur due to rainy season,earthquakes,man-made disturbances and other reasons,how to accurately and quickly detect the impacts of geological disasters on existing tunnels is the key to controlling railway diseases.Based on the principles of rapid construction,convenient operation and no impact on operation,a comprehensive detection method of"the combination of geological survey and exploration,the combination of ground and underground,and the longitudinal and horizontal combination"is put forward,guided by the results of electromagnetic macroscopic detection of the ground,using geological radar method and transient electromagnetic method to assist detection in the side wall of the existing positive cave,and using elastic wave method and transient electromagnetic method for advanced geological prediction on the face of the drainage hole.Multidirectional and multi-scale comprehensive detection and analysis are carried out,and finally verified by using advanced horizontal drilling.Through this methodological system,the location and scale of the disease and the impacts on the existing tunnel are accurately and quickly identified,which provides a basis for disease remediation solutions.

关 键 词：地质灾害 大地电磁法 瞬变电磁法 地质雷达法 弹性波法 

分 类 号：P631.4[天文地球—地质矿产勘探]