单线大坡度铁路隧道反坡排水施工技术  

Construction Technology of Reverse Slope Drainage of Single-line Tunnel with Large Slope

作　　者：张铎[1] 孙慕楠 ZHANG Duo;SUN Munan(Sinohydro Bureau 7 Co.,Ltd.,Chengdu Sichuan 610213)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都610213

出　　处：《四川水力发电》2023年第5期1-3,12,共4页Sichuan Hydropower

摘　　要：目前我国的基础设施建设正处于快速发展阶段,特长高速铁路的建设逐步向偏远地区、复杂地层延伸,导致穿越埋深较大并存有高压富水的隧道日益增多。为加快施工进度,满足施工场地、通风、排水、弃渣等需要,常常结合地形、地质条件采用增设斜井或横洞等辅助坑道的方式将整条隧道划分为独立区域进行施工。由于隧道埋深较大,导致辅助坑道的坡度亦设计的较大,从而给隧道内的反坡排水带来较大难度。笔者总结了某铁路单线大坡度隧道反坡排水采用的施工技术:布设了相应的泵站,通过排水管路分级接力抽排的方式,有效地解决了隧道反坡排水的难题,所取得的经验可为今后类似工程提供借鉴。At present,China's infrastructure construction is in a stage of rapid development.The construction of ultra-long high-speed railways is gradually extending to remote areas and complex strata,resulting in going through more and more tunnels with large buried depth and high pressure rich water.In order to speed up the construction progress and meet the needs of the construction site,ventilation,drainage and slag abandonment,etc.,the whole tunnel is often divided into independent areas by adding auxiliary adits such as inclined shafts or transverse adits in combination with the topography and geological conditions.Due to the large buried depth of the tunnel,the slope design of the auxiliary adits is larger,which brings greater difficulty to the reverse slope drainage in the tunnel.This paper summarizes the construction technology of reverse slope drainage of a single-line railway tunnel with large slope:setting up the corresponding pump station,and by means of hierarchical relay drainage of drainage pipe,the problem of tunnel reverse slope drainage is effectively solved,providing experience for similar projects in the future.

关 键 词：铁路隧道 高压富水 大坡度 反坡排水 泵站 施工技术 

分 类 号：U25[交通运输工程—道路与铁道工程] U21U215U212