基岩裂隙含水系统与隧洞外水压力的相关性研究  

Study on correlation between water-bearing system in bedrock fissure and water pressure outside tunnel

作　　者：于士程[1] 刘洪铖 卢长伟[1] YU Shi-cheng;LIU Hong-cheng;LU Chang-wei

机构地区：[1]吉林省水利水电勘测设计研究院,吉林长春130021

出　　处：《东北水利水电》2023年第2期1-2,37,71,共4页Water Resources & Hydropower of Northeast China

摘　　要：外水压力是深埋隧洞衬砌设计中的重要荷载,且往往难以确定。本文以新疆ABH输水隧洞为例,通过对地下水补径排条件分析,引入基岩裂隙含水系统概念,确定基岩裂隙含水系统,为外水压力折减系数的确定提供必要指导。研究结果表明:浅层基岩含水系统外水压力折减系数最大,深层基岩含水系统次之,超深层基岩含水系统最小。External water pressure is an important load in deep tunnel lining design,and it is often difficult to determine.In this paper,taking ABH water conveyance tunnel in Xinjiang as an example,the concept of water-bearing system in bedrock fractures is introduced to determine the water-bearing system in bedrock fractures by analyzing the conditions of groundwater rewatering and drainage,which provides necessary guidance for determining the reduction coefficient of external water pressure.The results show that the reduction coefficient of external water pressure in shallow bedrock water-bearing system is the largest,followed by deep bedrock water-bearing system and super deep bedrock water-bearing system.

关 键 词：引水隧洞 基岩裂隙含水系统 外水压力折减系数 

分 类 号：TV67[水利工程—水利水电工程] TV221.2