拉西瓦水电站混凝土双曲拱坝设计

Design of Double Curvature Arch Dam of the Laxiwa Hydroelectric Project

拉西瓦水电站地处气候寒冷、河谷狭窄陡峻及高地应力自然环境下,根据对电站坝址地形地质特点综合比较,选定了大坝为对数螺旋线型拱坝。就拱坝设计从建基面的选择、体形优化、河床坝基开挖形式研究、渗控与基础处理、抗震研究分析、坝体混凝土温度控制及高边坡处理等方面作了介绍,并进行了总结。

The Laxiwa Hydropower Station is located in an area with a natural environment of low temperature, narrow and steep valley, and high terrestrial stresses. According to the comparison of the geographic and geological characteristics of the dam site of the Station, it is determined to select a logarithmic spiral arch dam. This paper describes the selection of dam foundation, the optimization of dam body type, study on excavation pattern of riverbed dam foundation, seepage control and foundation treatment, seismic resistance analysis, concrete temperature control of dam body and the treatment of for high side-slope, and etc. and then gives some summary.