Abstract: This paper introduced the design scheme of anchor reinforcement and arrangement of anchor dynamometers. By analysis on the monitoring data, the result showed that the loss of anchor prestress had three periods, namely fast loss, continual loss and smooth development, and the prestress turned out to the sine curve fluctuation along with four seasons alternated in a long monitoring period. The“continual loss II”of stable anchor was caused by the shear-resistant excavation, and“continual growth”was controlled by slipping-tension fracture distortion of partial block which arised from lower excavation part.

摘要： 介绍了工程边坡锚索支护设计和锚索测力计布置情况，对采集的监测数据进行整理和分析，发现锚索预应力损失一般经历三个阶段，而且在观测周期足够长的情况下，预应力随四季温度交替呈正弦曲线波动。已稳定的锚索产生“持续损失II”主要是由于抗剪洞开挖，而预应力“持续增长”主要受下挖引起的局部块体滑移-拉裂变形控制。