物探技术在特长隧道工程勘察中的应用

Application of geophysical exploration techniques in the survey of special long tunnels

特长隧道常常穿过复杂地质环境,采用传统钻探法进行勘察时难以获得全面的地质信息,应用物探技术加以补充能够更好地指导后续工程建设。介绍了可控源音频大地电磁法(CSAMT)的基本原理及标量测量法的使用步骤,结合工程实例,论述了该方法的实际应用过程。表明应用该方法可以降低隧道施工中可能遇到的风险,更好地保障工程安全。

Extra-long tunnel often passes through complex geological environment,which makes it hard to obtain comprehensive geological information by applying traditional drilling method.However,it can better guide subsequent engineering construction through applying geophysical exploration technology.The thesis introduces the basic principles of Controlled-source Audio-frequency Magnetotellurics(CSAMT)and utilization procedures of scalar measurement method.Integrating with specific engineering examples,it discusses its practical application process,and proves that can reduce potential tunnel construction risks and better guarantee the tunnel engineering safety as well by using the above-mentioned methods.