三峡工程双线五级船闸高边坡预应力锚索监测成果分析

本文对三峡工程双线无级船闸高边坡锚索测力汁监测资料进行了分析．分析认为，锚索预应力变化总体上分为速损期、波动期和平稳期三个阶段，实测锚索预应力受温度、锚索外锚固段灌浆、降雨、锚索孔造孔质量、锚墩垫板情况和开挖等因素影响：目前高边坡锚固力平均损失率为-12．6％，直立坡锚固力平均损失率为-10．4％，变化不大．分析结果表明预应力锚索在加固高边坡稳定性方面作用显著，高边坡处于稳定状态．

Analysis on monitoring of pre-stressed anchor cable at high slope of TGP's ship lock

The paper has analyzed the dynamometer monitoring result of high slope anchor cable of TGP double-line five-grade ship lock. The anchor prestress variation can be divided into three steps of fast-broken phase, fluctuation phase and stationary phase, respectively. The actual measurement anchor cable prestress is effected by those elements, such as temperature, outside grouting of anchor cable, rainfall, quality of anchor cable holes, anchor pier plate and excavation, etc. At present, the average anchorage loss of high slope is -12.6%, the average anchorage loss of vertical slope is -10.4%, the variation is not obvious. It shows that the prestressed anchor cables work apparently on reinforcing the stability of the high slope and the high slope is in the steady condition.