摘要
为了保证三峡双线五级船闸闸室直立坡施工期安全,了解岩体变形情况,对其锚索、锚杆锚固状态进行了安全监测分析。分析认为,其锚索锚固力变化总体上分为速损期、波动期和平稳期三个阶段,锚索锚固力和锚杆应力主要受闸室开挖后岩体变形影响。目前直立坡北坡锚索测力计平均损失率13.2%,中隔墩锚索测力计平均损失率9.3%,南坡锚索测力计平均损失率11.9%,直立坡锚杆应力一般在50 MPa以下。分析结果表明,锚索、锚杆在加固直立坡稳定方面作用显著,闸室直立坡处于稳定状态。
In order to insure safety of construction of the vertical slope of double-line, five- flight shiplock, and have a good command of deformation of rock mass, an analysis of monitoring results of the conditions of their anchorage cables and anchor rods have been performed. The analysis shows the change of anchorage strength of anchorage cables fall into the following three stages： rapid damage stage, fluctuating stage and steady stage. The anchorage strength of anchorage cables and the stress of anchor rods are normally influenced by the rock deformation caused by excavation of shiplocks. Presently the loss rate of strength meter for anchorage cables on the north vertical slope is 13.2%, while that on the middle dividing piers 9.3%, and 11.9% on the south vertical slope on average respectively, and the stress of the anchor rods on vertical slope is generally less than 50 MPa. The study results indicate the function of anchorage cables and anchor rods in stabilizing the vertical slope is obvious and the shiplock vertical slope is in stable condition.
出处
《水力发电》
北大核心
2007年第12期73-75,共3页
Water Power
关键词
锚索
锚杆
安全监测
双线五级船闸
闸室直立坡
三峡工程
anchorage cable
anchor rod
safety monitoring
double-line and five-flight shiplock
vertical slope of shiplock
Three Gorges Hydroelectric Project
