大断面隧道浅埋段盖挖法施工实例

尹学平; 唐红宁

doi:10.3973/j.issn.1672-741X.2014.S.043

隧道建设 >

2014 , Vol. 34 >Issue 增刊: 282 - 285

DOI: https://doi.org/10.3973/j.issn.1672-741X.2014.S.043

施工技术

大断面隧道浅埋段盖挖法施工实例

尹学平 ,
唐红宁

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（云桂铁路云南有限责任公司，云南昆明〓650200）

尹学平（1972—），男，云南永仁人，2008年毕业于重庆大学,交通土建专业，本科，工程师,从事安全质量、铁路施工管理工作。

收稿日期: 2013-10-22

修回日期: 2014-07-02

网络出版日期: 2014-08-11

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Case Study on Covered Excavation in Large Crosssection and Shallowburied Tunnel

YIN Xueping ,
TANG Hongning

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(Yungui Railway Yunnan Co., Ltd., Kunming 650200, Yunnan, China)

Received date: 2013-10-22

Revised date: 2014-07-02

Online published: 2014-08-11

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摘要

介绍云桂铁路石林隧道、老笑一号隧道浅埋段有边桩盖挖法和无边桩盖挖法2个施工实例，总结铁路双线大断面隧道浅埋段采用盖挖法施工的关键技术，对大断面隧道浅埋段采用盖挖法施工的适用条件进行探讨，提出采用盖挖法替代浅埋暗挖法施工的条件，即当交通、水电等外部施工条件较好时，在一般地层隧道覆跨比为0.4～0.6的超浅埋段，岩溶洼地覆跨比为0.6～1.0的浅埋段可考虑采用盖挖法替代浅埋暗挖法施工。

关键词： 云桂铁路; 大断面隧道; 盖挖法; 适用条件

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尹学平 , 唐红宁 . 大断面隧道浅埋段盖挖法施工实例[J]. 隧道建设, 2014 , 34(增刊) : 282 -285 . DOI: 10.3973/j.issn.1672-741X.2014.S.043

Abstract

Covered excavation methods with and without side piles of shallowburied section of Shilin tunnel and Laoxiao No. 1 tunnel on YunanGuilin railway are presented. Key construction technologies of covered excavation method of large crosssection and shallowburied tunnel are summarized. Applicable conditions of covered excavation method are discussed, and the conditions that mining method can be replaced by covered excavation methods are proposed The mentioned conditions includes: coverspan ratio at normal strata is 0.4 ~ 0.6, and coverspan ratio at karst strata is 0.6 ~ 1.0. 

Key words： YunnanGuilin railway; large crosssection tunnel; covered excavation method; applicable condition

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