溪洛渡水电站左岸地下洞室群安全监测与分析  

Analysis on safety monitoring data of underground chambers in left bank of Xiluodu Hydropower Station

作　　者：冯小磊[1] 施云江[1] 易丹[1] 

机构地区：[1]长江空间信息技术工程有限公司,湖北武汉430010

出　　处：《人民长江》2010年第20期28-31,共4页Yangtze River

摘　　要：利用溪洛渡水电站左岸地下洞室施工期埋设的多点位移计、锚索测力计、锚杆应力计等仪器的监测资料,对溪洛渡左岸地下主要洞室开挖施工期间围岩的变形及应力进行了综合分析与评价,并与目前国内较大的水电工程地下厂房围岩变形进行了比较分析。结果表明,围岩变形受施工开挖爆破、跟进支护速度和地质条件的影响较大;锚杆应力值不大,并在开挖结束后趋于稳定;锚索锚固效果良好。施工开挖期间,溪洛渡地下洞室各项监测成果均能准确反映出洞室围岩在开挖施工过程中的变形规律。We analyze and evaluate the stress and deformation of surrounding rock in construction and excavation period by using rod extensometer,force sensor for pulling force measurement of anchor cable and bolt stress meters buried during construction of underground chambers in left bank of Xiluodu Hydropower Station.The surrounding rock deformation is compared with those of other large hydropower stations at home.The results show that the surrounding rock deformation is influenced by excavation and blast,following supporting speed and geological conditions;anchor stress is not large and tends to be stable;the effect of anchor cable support is satisfying.In the period of construction and excavation,the monitoring results of these underground chambers can reflect the deformation laws of the surrounding rock correctly.

关 键 词：安全监测 资料分析 地下洞室 溪洛渡水电站 

分 类 号：TV698[水利工程—水利水电工程]