阿尔金山地区主要地质问题分析与铁路选线对策

结合格库(格尔木—库尔勒)铁路阿尔金山越岭地区的地质问题,提出在低速铁路的选线过程中,坚持越岭长隧道和引线部分协同考虑的基本原则,对重大的不良地质问题应以绕避为主,对无法躲避的地质问题、环境问题,应采取避重就轻的原则,尽量降低工程风险和难度、尽量减小对环境的影响。阿尔金山地区工程建设时,须研究区域地质环境背景,考虑地表水与地下水的水力联系;充分关注燕山期以前侵入岩遭受多期多次构造影响可能对隧道围岩的影响;同时考虑该区野骆驼及其他野生动物的保护。

Analysis of Main Geological Problems in Altun Region and Countermeasures of Railway Alignment Selection

Combining with the geological problems in the Altun mountain ridge crossing area of Golmud-Korla Railway,the basic principle of synergistic consideration between ridge crossing tunnel and lead line was put forw ard in the course of alignment selection of low-speed railway,avoiding should be the main method for major adverse geological problems,and the principle of avoiding the importance and dw elling on the trivial should be used for unavoidable geological and environmental geological problems,which could reduce the risk and diff iculty of the project and minimize the impact on the environment.In the construction of the project in Altun region,it is necessary to study the regional geological environment background,consider the hydraulic relationship between surface water and groundw ater,pay full attention to the effect of intrusive rocks suffering from multi-stage tectonic inf luences before Yanshanian epoch on the surrounding rock of the tunnel,and think about the protection of wild camels and other w ildlife in this area.