某高铁隧道工程建设对邻近瀑布水量的影响分析  

Impact Analysis of High-speed Railway Tunnel Construction on the Water Volume of Adjacent Waterfalls

作　　者：张光明 王钦刚 ZHANG Guangming;WANG Qingang(China Railway Design Corporation,Tianjing 300308,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308

出　　处：《铁道勘察》2025年第2期35-40,共6页Railway Investigation and Surveying

基　　金：中国铁路设计集团有限公司科技开发计划重点课题(721869;2021BDK06)。

摘　　要：隧道工程开挖常形成新的地下水排泄通道,会打破原地下水系统的补-径-排平衡。为研究某隧道工程建设对邻近瀑布水量的影响,采用地质分析方法辅以水化学测试,从地下水系统划分、瀑布水量来源、瀑布与隧道水力联系及施工止水工艺等方面,分析隧道施工对瀑布水量的影响。研究表明:(1)瀑布与拟建隧道处于两个相对独立的地下水子系统,受地表分水岭和地下分水岭阻隔,两个子系统之间的水力联系较弱;(2)瀑布补给水源主要为地表水汇集,地下水补给仅占2.67%~26.57%,隧道施工不会对跨越分水岭的地表水汇集产生影响;(3)瀑布与隧道之间无线性构造连通,不具备发生水力联系的条件;(4)隧道止水工艺有利于减小隧道开挖对地下水渗流场的扰动,并为地下水渗流场恢复平衡提供保障。The excavation of tunnel often forms new groundwater discharge channels,which break the balance of recharge-runoff-discharge of the original groundwater system.Geological analysis method,combined with hydro-chemical testing,was adopted to study the impact of a tunnel construction on the water volume of adjacent waterfalls.The possibility of the influence of tunnel construction on waterfall was analyzed from the aspects of groundwater system division,waterfall water source,hydraulic connection between waterfall and tunnel,and water-stopping measures in tunnel construction.The analysis results are as follow:(1)The waterfall and the tunnel are located in two independent groundwater subsystems,separated by surface and underground watersheds,and the hydraulic connection between the two groundwater subsystems is weak.(2)The main source of the waterfall is surface water.The supply of groundwater accounts for only 2.67%to 26.57%,and it is difficult for tunnel excavation to affect the catchment of surface water across the watershed.(3)There are no linear structural between the waterfall and the tunnel,as well as hydraulic connection.(4)Water-stopping measures in tunnel construction are beneficial to reduce the disturbance of tunnel excavation on groundwater seepage field,and are beneficial to restore the balance of groundwater seepage field.

关 键 词：铁路隧道 瀑布 水力联系 同位素 地下水系统 地表水 

分 类 号：U238[交通运输工程—道路与铁道工程] U452.1[建筑科学—桥梁与隧道工程]