中老铁路玉磨段复杂隧道施工过程难点问题探讨  

A study on difficulties in constructing complex tunnels in Yuxi-Mohan Section of China-Laos Railway

作　　者：琚国全[1] Ju Guoquan(Cooperative Cons Iruction Project Department of China Railway Eryuan Engineering Group Co.,Ltd.)

机构地区：[1]中铁二院工程集团有限责任公司

出　　处：《一带一路报道（中英文）》2022年第3期98-102,共5页The Belt and Road Reports

基　　金：Ju Guoquan,senior engineer and Depuly Manager of Yuxi-Mohan Railway Cooperative Cons Iruction Project Department of China Railway Eryuan Engineering Group Co.,Ltd.

摘　　要：中老铁路玉磨段位处云南省南部,隧线比大,隧道地质构造复杂。隧道施工过程中各种地质灾害频发,尤其以前震旦系富水砂岩、板岩涌突问题最为突出。本文旨在对中老铁路新平隧道施工过程中的涌突问题进行探讨,归类总结了造成砂板岩隧道涌突的五种地质环境、三种机理及影响因素。通过采取合理的超前预加固措施及施工工艺,在玉磨铁路工程建设中突水突泥灾害得到成功预防,为今后类似项目的建设提供参考与借鉴。In the Yuxi-Mohan Section of China-Laos Railway,located in the south of Yunnan Province,the combined length of the tunnels,featuring complex geological structure,accounts for a large proportion.Various geological disasters,especially the inrush of pre-Sinian water-rich sandstone and slate,occur frequently during tunnel construction.This paper discusses the challenge of inrush in building Xinping Tunnel of China-Laos Railway,and summarizes five geological environments,three mechanisms and influencing factors that cause the inrush of sandstone and slate in the tunnel.Reasonable advance reinforcement measures and construction technology have been successfully applied to prevent water and mud inrush disasters in the construction of Yuxi-Mohan Railway project,which can provide reference for the construction of similar projects in the future.

关 键 词：中老铁路 突水突泥 玉磨铁路 超前预加固 工程建设中 地质灾害 富水砂岩 云南省南部 

分 类 号：U45[建筑科学—桥梁与隧道工程]