锦屏一级电站高陡顺层边坡支护内部安全监测分析

为了解锦屏一级电站大奔流沟料场高陡顺层边坡岩体变形情况，确保开挖支护的工程安全性，特对其锚索、锚杆锚固状态进行了典型断面上的锚杆应力计、锚索测力计和多点位移计安全监测分析．分析认为，料场边坡稳定性主要受到降雨、开挖爆破、锚索张拉施工、岩石体蠕动变形等因素的影响．分析结果表明，监测成果能够明确地反映预应力锚索的张拉情况和预应力发展变化情况，是反映锚固效果和锚索工作性况的最直接的参考资料；锚索、锚杆在加固边坡稳定方面作用显著，料场边坡处于稳定状态．

Monitoring Analysis of Internal Safety for High-steep Bedding Slope Supporting in Jinping I Hydropower Station

In order to understand the high-steep rock slope deformation of Mercedes Benz ditch flow material field in Jinping I Hydropower Station and ensure the engineering safety of excavation and support, the anchor and anchoring state are specially used to do safety monitoring analysis in typical sections by anchor bar stress meter, anchor cable dynamometer and multiple-point displacement meter. The authors think that the slope stability of material field is mainly affected by rainfall, excavation and blasting, anchor cable tension construc- tion, creep deformation of rock mass and other factors. The results show that the monitoring performance can clearly reflect the tension of prestressed anchor cables and the development changes of prestressing, and are the most direct reference in reflecting anchoring effect and anchor cable working condition. Anchor cables and anchor bolts produce a remarkable effect in reinforcing slope stability; therefore the slope of material field is in the steady state.