限排水隧道泄水阀设计及相关参数研究  

Design and related parameter research of drainage valve for limited drainage tunnels

作　　者：纪禄凌 曾原驰 黄晓婷 张铠 司涛杰 JI Luling;ZENG Yuanchi;HUANG Xiaoting;ZHANG Kai;SI Taojie(Xiamen Road&Bridge Construction Group Engineering Co.,Ltd.,Xiamen 361000,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Xiamen Jiehang Engineering Testing Technology Co.,Ltd.,Xiamen 361000,China;China MCC5 Group Corp.Ltd.,Chengdu 610000,China)

机构地区：[1]厦门路桥建设集团工程有限公司,福建厦门361000 [2]福州大学土木工程学院,福建福州350108 [3]厦门捷航工程检测技术有限公司,福建厦门361000 [4]中国五冶集团有限公司,四川成都610000

出　　处：《人民长江》2024年第11期198-205,215,共9页Yangtze River

基　　金：福建省自然科学基金青年创新项目(2022J05190)。

摘　　要：为解决深埋隧道因受高地下水压力而造成的衬砌结构病害等缺陷,以及全排水隧道因过度排放地下水而导致的地层沉陷、植被破坏等生态环境问题,提出一种由泄水阀控制排水量的隧道防排水设计思路。该设计既能够有效降低作用在衬砌背后的地下水压力,又可以控制地下水排放量,体现了防堵结合的地下水控制理念。根据上述深埋隧道排水设计理念,考虑可调控排水量的泄水阀作用,提出了一种限排水隧道三维渗流的理论解,该理论解能够通过调整泄水阀间距和泄水阀压力,将隧道排水量及衬砌背后水压力控制在允许的范围内。数值计算与理论解对比分析结果表明,二者具有高度一致性,验证了理论解的有效性。最后,对该理论解进行了参数分析,详细讨论了地下水位、渗透系数、泄水阀间距和阀门压力等参数的影响,并据此制定了相应的隧道防排水设计方法。相关研究成果可为该限排水隧道设计提供参考依据。To address damages of lining structures of deep-buried tunnels due to high underground water pressure,and ecological environmental issues such as ground subsidence and vegetation damages caused by excessive drainage in fully drained tunnels,we propose a novel tunnel drainage design idea that incorporates controlled water discharge through drainage valves.This design effectively reduces the groundwater pressure behind the lining and controls the amount of groundwater discharged,thereby minimizing the impact of tunnel drainage on the groundwater environment,embodying a combined concept of prevention and control in groundwater management.Based on the proposed design for deeply buried tunnels,a theoretical solution of three-dimensional seepage was presented considering the effect of drainage valves which enable adjusting discharge volume feasible.By modulating the spacing and pressure of these valves,it is possible to keep tunnel drainage and the water pressure behind the lining within acceptable limits.The validity of this theoretical solution is corroborated through comparative analysis with numerical calculations,demonstrating high consistency.Furthermore,a parameter analysis was conducted to explore influences of groundwater level,permeability coefficient,valve spacing,and valve pressure,so a corresponding tunnel drainage and water resistant design was proposed.This paper presents relevant engineering case studies,offering practical guidance for design of this new type of tunnels equipped with drainage valves.

关 键 词：深埋隧道 衬砌结构 泄水阀 防排水系统 理论解 

分 类 号：TV672.1[水利工程—水利水电工程]