某水电站地下厂房岩锚吊车梁三期浇筑可行性分析  

Third Phase Pouring Feasibility Analysis of Crane Beam on Rock Anchor for Underground Powerhouse of Hydropower Station

作　　者：马震岳[1] 凌影[1] 金长宇[2] 江权[3] 

机构地区：[1]大连理工大学建设工程学部水利工程学院,辽宁大连116024 [2]中国水电顾问集团华东勘测设计研究院,浙江杭州310014 [3]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室。湖北武汉430071

出　　处：《水电能源科学》2010年第3期66-69,共4页Water Resources and Power

基　　金：辽宁省教育厅重点实验室科研基金资助项目(2008S045)

摘　　要：针对中—高地应力的西部地区水电站地下厂房岩壁吊车梁的浇筑时机对自身受力和变形影响较大,基于西部某水电站地应力反演,采用弱化单元和接触单元模拟岩锚梁与围岩接触部位之间特殊的力学行为,并结合开挖方案对不同阶段浇筑岩梁的受力和变形进行了计算分析。计算结果表明,该水电站地下厂房岩锚梁结构的三期浇筑可行有效,且能大幅降低施工难度,缩短施工工期。The pouring opportunity of the rocky crane beam of the hydropower station underground powerhouse has a great influence on its stress and deformation, especially in the western region with middle to high ground stress. On the basis of inversion analysis of initial ground stress of a hydropower station in the western region and by use of weaken element and contact element to simulate the special mechanical behavior between the rocky crane beam and the surrounding rock, the stress and deformation of the rock beam in different excavation stages are analyzed in this paper. The calculation result shows that the present third phase pouring scheme is effective and infeasible, and can greatly reduce construction difficulty and shorten construction period.

关 键 词：岩锚吊车梁 初始地应力反演 薄层弱化单元 接触面单元 浇筑 

分 类 号：TV731.6[水利工程—水利水电工程]