深埋地下洞室动态安全监测设计——以白鹤滩右岸地下厂房为例
Design of Dynamic Safety Monitoring System for the Deep Underground Right-bank Powerhouse in Baihetan Hydropower Station
戴天将 1赵程 2郑晓红 2段杭3
作者信息
- 1. 国家能源局大坝安全监察中心,浙江 杭州 311122
- 2. 国家能源局大坝安全监察中心,浙江 杭州 311122;中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122
- 3. 中国三峡建工(集团)有限公司,四川 成都 610000
- 折叠
摘要
针对白鹤滩水电站右岸地下厂房的地质情况、结构布置以及变形和应力分布特点,从监测断面布置、监测手段选择、重点监测部位等方面着眼,建立起一套包括地下厂房围岩变形、支护结构应力、错动变形、岩壁吊车梁应力与变形等监测项目在内的深埋地下洞室监测系统,对重点监测部位和不良地质洞段,提出专门监测方案并实施自动化监测,同时根据开挖揭示和反馈分析,及时进行动态设计,达到预警预报以及指导施工等.实施结果表明该监测系统对指导工程安全施工及运行起到了重要作用.
Abstract
Considering the geological conditions,structural layout and characteristics of deformation and stress distribu-tion of the right-bank underground powerhouse in Baihetan Hydropower Station,a comprehensive monitoring system for deep underground caverns is established from the aspects of monitoring section layout,monitoring method selection,and key monitoring locations.The system includes monitoring items of the underground powerhouse such as deformation of the surrounding rock,stress in the support structures,displacement deformation,and stress and deformation of the rock wall crane beams.For key monitoring locations and sections with adverse geological conditions,special monitoring plans are proposed and automated monitoring is implemented.Also,dynamic design is carried out timely based on the excavation disclosure and feedback analysis to realize the early warning and construction guidance.Practice application shows that the monitoring system has played a significant role in guiding the safe construction and operation of the project.
关键词
白鹤滩水电站/地下厂房/安全监测/动态设计Key words
Baihetan Hydropower Station/underground powerhouse/safety monitoring/dynamic design引用本文复制引用
出版年
2024
NETL
NSTL
万方数据