并缝技术在阿海水电站侧向稳定的应用

Application of Parallel Seam Technology of Ahai Hydropower Station

阿海水电站混凝土重力坝,位于金沙江中游河段,坝址区河谷为V形,为山高谷深的地貌形态,两岸坡度一般在30°~45°。坝肩边坡为适应地形条件,开挖坡比较陡(坡比约为1:0.4-1:0.6),存在岸坡坝段的侧向稳定性问题。通过三维有限元法对岸坡坝段进行分析计算,创新性提出了应用并缝措施解决地震工况下的侧向稳定性问题。为类似工程的设计提出了参考与借鉴。

The RCC gravity dam of Ahai Hydropower Station is located in the middle reaches of the Jinsha River. The valley of the dam site is a "V" shape,which is a mountainous valley with a deep landform. The slopes of both banks are generally 30°~45°. In order to adapt to the terrain conditions,the slope of the dam abutment is relatively steep(the slope ratio is about 1∶0.4~1∶0.6),and there is a problem of the lateral stability of the bank slope. This paper analyzes and calculates the bank slope dam section by the three-dimensional finite element method,and innovatively proposes the application of parallel joint measures to solve the lateral stability problem under earthquake conditions. It provides references and references for the design of similar projects.