复杂艰险山区西成高铁陕西段设计难点及对策措施

Design Difficulties and Measures of Shaanxi Section of Xi’an-Chengdu High-speed Railway in the Complex and Dangerous Mountain Area

随着我国高速铁路的发展,大量复杂艰险山区高速铁路项目不断开展设计、建设和运营。西成高速铁路为我国首条穿越秦岭的高速铁路,是典型的复杂艰险山区高速铁路,其途径的陕西段地形困难、地质复杂、环境敏感性高,给工程设计带来很大难度。文章结合西成高速铁路复杂艰险条件,就综合选线及工程选择、工程安全、环境保护以及长大坡度、密集隧道群防灾疏散等五方面的设计难题,有针对性地提出设计措施和对策,并总结经验,可为类似艰险山区高速铁路项目勘察设计提供参考。

With the development of Chinese high speed railway,a plenty of high-speed railway projects will be designed,constructed and operated in the complex and difficult mountain area.Xi’an-Chengdu high-speed railway is the first high-speed railway passing through Qinling in China.As a typical complicated and dangerous mountain region high-speed railway,great difficulties have been encountered during the engineering design of Shannxi section with the difficult terrain,complex geologyl,and environmental sensitive areas.According to the difficult condition of Xi’an-Chengdu high-speed railway,aiming to five aspects of the design difficulties including comprehensive route selection,engineering safety,environmental protection,long steep grade,disaster prevention and rescue evacuation of tunnel group,put forward the design measures and countermeasures.It will provided reference for the survey and design of high-speed railway project in the perilous mountain area.