某抽蓄电站施工期地下厂房围岩变形性态分析  

Deformation Performance Analysis of Surrounding Rock of Underground Powerhouse during Construction of a Pumped-storage Power Station

作　　者：高志伟 GAO Zhi-wei(Guangdong Water Conservancy and Electric Power Survey&Design and Resrach Institute Co.,LTD,Guangzhou 510170,China)

机构地区：[1]广东省水利电力勘测设计研究院有限公司,广州5101702

出　　处：《黑龙江水利科技》2021年第10期16-19,共4页Heilongjiang Hydraulic Science and Technology

摘　　要：施工期地下厂房围岩的稳定性是大家关注的重点。文章基于原型监测,结合施工工况等对某抽蓄电站地下厂房开挖过程中的围岩变形情况进行分析。分析结果表明,主机间断面的顶拱围岩变形平均值大于安装场断面,上游拱腰围岩变形普遍大于拱顶和下游拱腰围岩变形,厂房围岩变形均在开挖后逐渐收敛,施工期内围岩处于稳定状态。The stability of surrounding rock of underground powerhouse is the focus of attention during the period of project construction.Combined with the construction conditions,the deformation of surrounding rock during the course of underground powerhouse excavation of a pumped-storage power station is analyzed based on the prototype monitoring in this paper.The analysis results show that the average deformation value of surrounding rock of the top arch of main engine discontinuity surface is greater than that of the section of installation site,the surrounding rock deformation of the upper arch is generally larger than that of the arch and the lower arch.The surrounding rock deformation gradually converges after excavation,and the surrounding rock is in a stable state during the construction period.

关 键 词：围岩变形监测 抽水蓄能电站 洞室安全稳定 监测分析 

分 类 号：TV743[水利工程—水利水电工程] TV554