【摘要】 针对高原地区高寒、高海拔、特长深埋隧道的综合勘探技术研究,是我国公路隧道勘察中近年来研究的热点和难点,传统钻探及调绘等手段在高原隧道勘察中具有很大的局限性,采用新的技术手段是提升高原隧道综合勘察水平的重要因素.本文通过对世界上海拔最高的特长隧道雀儿山隧道(最高海拔超过5000m,工程地质条件极其复杂,次级断裂发育,岩体为花岗岩体,采用传统地质手段对构造识别困难)采用高频大地电磁测深法进行构造、岩性的勘察,分别从高频大地电磁方法的采集手段、静态校正、反演方法等关键技术问题进行分析,结合钻探及地质调绘资料,认为高频大地电磁法可以在宏观上查明深埋隧道地层岩性分界、地质构造及其赋水性,为钻孔布置及隧道设计、施工提供地球物理依据,在高原地区深埋隧道勘查中能起到理想的效果,值得作为一种有效方法进行推广.更多还原

【Abstract】 Study on technology of comprehensive exploration on the Super-long and Deep Tunnels in High Attitude and Cold Zones,which is one of priority and hotspot issue in our investigation and research in recent years.The traditional drilling and engineering geology survey methods have limitation in the plateau tunnel exploration,by adopting new technology is an important factor to improve the level of comprehensive survey of tunnel in Plateau.QueErShan tunnel more than 5000 meters above sea level,a lot of secondary fault,Mainly for the granite tunnel,the structure identification difficult only base on the traditional geological means,using the high frequency magnetotelluric method applied to QueErShan tunnel,by drilling and Geological Survey contrast,The key problem of the acquisition method,static effect,Inversion Method also have been analyses,respectively.It is recognized that high-frequency magnetotelluric method can identify the lithology,geological structure and the Water content of rock at the macro level,and provide geophysical basis for the tunnel layout and tunnel design and construction.This method is a good method survey of deeply-buried long highway tunnels.t is worth as an effective method of promotion.更多还原