摘要
大岗山水电站地下厂房围岩构造型式以沿岩脉发育的挤压破碎带、断层和节理裂隙为主,需要对三大洞室的围岩变形进行监测和分析。介绍了监测仪器的选取和埋设,根据三大洞室施工期的监测成果,对围岩变形与锚固荷载量级进行了评价;对围岩变形趋势进行了分析;证明了洞间柱体布置的合理性。与其他同类型工程监测成果的对比分析表明,大岗山水电站地下厂房围岩基本处于稳定状态,变形总量较小,控制变形的措施合理有效。
The characteristics of surrounding rock structure of underground powerhouse of Dagangshan Hydropower Station are mainly the compressive rupture zone developed along the dyke,fault and joint fissure.The monitoring and analysis of surrounding rock deformation of the three caverns are required.The selection and embedment of monitoring instruments are introduced.Based the monitoring results in construction period,the surrounding rock deformation and anchoring load magnitude are evaluated,the deformation trend is analyzed,and the reasonability of support pillars among the caverns is verified.The monitoring results are compared with those of other projects.It is show that the surrounding rock of underground powerhouse of Dagangshan Hydropower Station is in stable state with small deformation,and the deformation controlling measures are effective.
出处
《人民长江》
北大核心
2012年第22期73-76,共4页
Yangtze River
关键词
地下厂房
围岩变形
应力特征
对比分析
大岗山水电站
underground powerhouse
surrounding rock deformation
stress characteristics
comparison analysis
Dagangshan Hydropower Station
作者简介
李桂林，男，工程师，主要从事水利水电工程施工与管理工作。E—maill：glboss@126．com
