浅谈西山隧道偏压软弱围岩地段施工技术

Talking about the Construction Techniques Adopted in Partial Pressed Weak Surrounding Rock Areas of Xishan Tunnel

以黔桂线扩能改造工程西山隧道为例,针对隧道偏压软弱围岩地段施工过程中所遇到的严重变形问题,介绍了一套安全可靠的初期支护措施和施工方法,并对变形原因进行了初步分析,可为类似工程提供参考。

Taking Xishan Tunnel of the expansion and reconstruction project of Guizhou-Guangxi Railway Line as an example, and in the light of severe deformation encountered in the course of construction of partial pressed weak surrounding rock areas in Xishan Tunnel, this paper introduces a set of safe and reliable supporting measures and construction techniques adopted in the early stage of the construction, and carries out a preliminary analysis on the causes of deformation, which can provide a reference for similar projects.