高边坡变位计算的矢量法及在李家峡工程中的应用

Application of high slope deformation vector method in Lijiaxia project

在一般情况下 ,岩石变位计测值并不代表岩石边坡的真实变位 ,用矢量法原理分析变位计测值可以求得实际变位值的大小、方位和倾角。李家峡水电站在拱坝坝肩开挖和高边坡锚固施工的同时 ,就埋设了岩石变位计 ,并率先采用矢量法对施工期的观测成果进行跟踪分析 ,发挥了指导边坡加固设计 ,检验边坡加固效果 。

The values of deformeter generally do not present the real deformation of high slope.The real value,orientation and dip can be gained by using the vector method.The deformeters were installed during the dam abutment excavation and anchorage of high slopes for Lijiaxia hydropower station.The vector method was first used in analyzing the result of observation during the construction period.The vector method had played great roles in guiding the design of slope,checking the effectiveness of slope strengthening and monitoring the effects of dam foundation excavation on slope stability.