向斜储水构造隧洞开挖涌水塌方治理研究  

Research on water inrush and collapse treatment techniques for excavationof water diversion tunnel with inclined reservoir storage structure

作　　者：李庆国 LI Qingguo(Construction&Management Bureau of North Hubei Water Transfer Project,Wuhan 430000,China)

机构地区：[1]鄂北地区水资源配置工程建设与管理局(筹),湖北武汉430000

出　　处：《水利水电快报》2023年第10期60-64,共5页Express Water Resources & Hydropower Information

摘　　要：为研究经济有效的隧洞涌水塌方治理技术,以鄂北地区水资源配置工程凤凰寨隧洞为例,分析其出现涌水塌方事故的原因,采取排堵结合,排水减压,超前小导管和拱架等措施进行治理,并通过变形监测验证该方案的有效性。结果表明:围岩变形量小于规范允许最大相对变形值,隧洞趋于稳定;所采用的短开挖、强支护处理方法可有效限制破碎围岩变形。研究成果可为类似输水隧洞塌方涌水处理方案的制定提供参考。In order to study economically effective tunnel water inrush and collapse control techniques,taking the Fenghuangzhai Tunnel,water resources allocation project in northern area of Hubei Province,as an example,the reasons for the occurrence of water inrush and collapse accidents were analyzed.Supporting measures such as drainage decompression,advanced small conduits,and arch frames were taken in combination with drainage and blocking,and the effectiveness of the plan was verified through the deformation monitoring.The results showed that the deformation of the surrounding rock was less than the maximum relative deformation allowed by the specifications,and the tunnel tended to stabilize;the short excavation and strong support methods used in this project could effectively limit the deformation of fractured surrounding rock.The research results can provide a reference for the treatment of collapse and water inrush in similar water tunnels.

关 键 词：向斜 涌水塌方 排水减压 超前小导管 强支护 水资源配置工程 鄂北地区 

分 类 号：TV554[水利工程—水利水电工程]