摘要
结合郑西客运专线金银山隧道的工程概况,对该隧道岩性以及大断面开挖进行了分析,提出了双层初期支护和线性垂直挑顶的施工方法,解决了大断面隧道松散体围岩的成功挑顶问题。
The paper combines engineering general situation of the Zheng-Xi passenger transportation special line Jinyin mountain tunnel, opened to analysis dig the tunnd＇s rock and big cross sections, puts forward a layer the early shied crest construction methods with the line perpendicularity, resolving the problem of lax big cross section round the rock in tunnel.
出处
《山西建筑》
2009年第16期338-339,共2页
Shanxi Architecture
关键词
隧道
线性垂直挑顶施工
外层初期支护
临时支撑
tunnel, line perpendicularity picking peak construction, layer outside early shied, accidental underprop
