三峡工程右岸地下电站主厂房施工期安全监测  

Safety Monitoring for the Main Power House of Three Gorges Right Bank Underground Hydropower Station at Construction Stage

作　　者：周扬[1] 张志斌[2] 

机构地区：[1]中国长江电力股份有限公司检修厂,湖北省宜昌市443002 [2]中国水利水电建设集团第十四工程局,云南省昆明市650000

出　　处：《水电自动化与大坝监测》2006年第6期70-74,共5页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：三峡地下电站主厂房跨度大、覆盖薄,国内外少有。文中对三峡地下电站主厂房施工期的安全监测资料进行了初步分析,监测成果表明,至主厂房第2层开挖支护施工结束,主厂房围岩深部变形最大为4．86mm,锚杆应力大部分小于100 MPa,均在设计允许范围内,目前主厂房围岩是稳定安全的,施工期安全监测在反馈设计、指导施工中发挥了重要作用。The large span and thin cover of the main power house of the Three Gorges Right Bank Underground Hydropower Station are rare. The safety monitoring data at the construction stage of the main power house are primarily analyzed. The results show that, till the end of excavation and timbering for layer Ⅱ of the main power house, the maximum deformation of the wall rock is 4.86 mm, and the anchor bar stress is mostly smaller than 100 MPa, both within the allowed design range. At present, the wall rock of the main power house is stable and safe. The safety monitoring at the construction stage plays an important role in feeding back design back and guiding construction.

关 键 词：地下电站 主厂房 施工期 安全监测 围岩变形 锚杆应力 

分 类 号：TV731.6[水利工程—水利水电工程]