太行山特长隧道综合勘察技术的应用与效果

研究目的:太行山隧道地形地质条件极为复杂,通过采用综合勘察技术以查明隧道的工程地质和水文地质条件。研究方法:针对隧道复杂的地质条件与设计要求,阐述各种勘察方法的使用原则、工作内容、工作程序和应用效果。研究结果:综合勘察结果表明,太行山隧道岩溶、地下水不发育,不会发生大的突水突泥、岩爆、有害气体等地质灾害;全隧道除长约4.5 km的膏溶角砾岩和部分断裂破碎带工程地质性质较差外,整体上工程地质条件较好。目前隧道施工进展顺利,综合勘察技术的应用取得了显著的技术、社会和经济效益。研究结论:对于地形地质条件复杂的长大隧道,以地质调绘为基础,发挥遥感的宏观作用,利用物探解译、钻探验证,开展综合勘察技术研究和分析评价是做好隧道地质勘察工作的关键。

The Application and Effect of Comprehensive Investigations in the Taihang Mountain Super Long Tunnel

Research purposes: The topographic and geologic conditions of the Taihang Mountain tunnel in the passenger special line from Shijiazhuang to Taiyuan are very complicated.In order to make the thorough investigation of the engineering geological and hydrogeological conditions of the tunnel,comprehensive investigations were applied.Research methods:Based on the complicated geological conditions and the design requests of the tunnel,all investigation methods involving application principles,job contents,quantity of work and effect are introduced detailedly.Research results:The results show that karst and groundwater do not developed,and severe geologic hazard-water gushing,projecting mud soil,rock burst,harmful gas etc.will not occur.Except that engineering geological conditions of 4.5 km long gypsum breccia and partial fault crushed zone are relatively poor,the others are good.Now the construction of tunnel goes well and prominent technical,social and economical benefits are obvious.Research conclusions:In the survey of the long tunnels which have complicated geographical and geological conditions,the comprehensive investigation plays a key role for the entire process of geologic investigation of tunnel,with the geology investigation taken firstly,the macroscopic function of remote sensing developed,the physical exploration as well as the further validation with drilling adopted effectively.