富水超大断面隧道开挖方法比选研究
COMPARISON AND SELECTION OF EXCAVATION METHODS FOR WATER-RICH TUNNEL WITH SUPER LARGE SECTION
汪成竹 1寇学超 1冯冀蒙 2甘海峰 1张俊儒2
作者信息
- 1. 中铁四局集团第五工程有限公司,江西九江 332000
- 2. 西南交通大学交通隧道工程教育部重点试验室,成都 610031
- 折叠
摘要
韶新高速公路的松山隧道穿越富水区域,开挖过程中出现了明显的涌水现象.基于该隧道地质的资料,利用有限元软件FLAC 3D分别模拟全断面法和上下台阶法2种开挖方法.研究结果表明:当水压较小时,宜采用全断面开挖法;当水压力较大时,宜采用上下台阶法施工.研究结论对富水超大断面隧道开挖方法的选择具有一定的参考意义.
Abstract
The Songshan tunnel of the Shao-Xin expressway passes through a water-rich area,and there is an obvious water gushing phenomenon during the excavation process.In order to select a reasonable excavation method,based on the geological data of the tunnel,the finite element software FLAC 3D was used to simulate two excavation methods,the full face excavation method and the upper and lower bench method.The research results show that:when the water pressure is small,it is better to use the full face excavation method,and when the water pressure is high,it is better to use the upper and lower bench method for construction.The research conclusions have certain reference significance for the selection of excavation methods for water-rich tunnel with super large section.
关键词
富水/超大断面/开挖方法/数值模拟Key words
water-rich/super large section tunnel/excavation methods/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据