复杂艰险山区铁路隧道精细化工程地质勘察研究

A Study on Detailed Geological Investigation of Railway Tunnel in Challenging Mountain Area

西部艰险山区铁路隧道建设面临复杂的地形地貌条件、恶劣的气候条件、强烈的内外动力地质作用、活跃的新构造运动以及频发的地质灾害等问题,隧道勘察难度大。本文梳理了艰险山区5条铁路隧道工程勘察期间在物探布置、钻探布置以及勘探成果的综合分析方面存在的不足,通过对导致勘察工作不足的原因进行剖析,提出了针对艰险山区铁路隧道勘察阶段物探与钻孔的布置要点,总结了勘察成果综合分析存在的不足与解决方法,以期为复杂地质艰险山区隧道工程精细化地质勘察工作提供借鉴。

The construction of railway tunnels in challenging mountain areas in Western China is confronted with complex topographical conditions,severe climatic conditions,intense internal and external geological dynamics,active neotectonic movements,and frequent geological disasters.The complexity of the terrain makes tunnel surveys challenging.This paper reviewed the inadequacies encountered during the survey of five railway tunnels in challenging mountain areas in terms of geophysical layout,drilling layout,and the comprehensive analysis of exploration results.By dissecting the reasons for these inadequacies in the investigation,the paper proposed the key points for the layout of geophysical and drilling during investigation of railway tunnels in challenging mountain areas.The paper summarized the weaknesses and solutions in the comprehensive analysis of investigation results,expecting to provide references for detailed geological investigations of tunnel projects in complex and challenging mountain areas.