混凝土芯墙土坝的边坡稳定分析  

Slope Stability Analysis for Concrete Core Wall of the Earth Dam

作　　者：郝伯瑾[1,2] 常芳芳[1,2] 王少峰[1,2] 

机构地区：[1]黄河水利科学研究院,郑州450003 [2]水利部堤防安全与病害防治工程技术研究中心,郑州450003

出　　处：《南水北调与水利科技》2013年第B02期81-82,共2页South-to-North Water Transfers and Water Science & Technology

基　　金：水利部公益性行业科研专项经费项目“堤防土石结合部病险探测监测技术”（201301061）.

摘　　要：混凝土芯墙土坝为分层碾压施工，坝体的各层填土的土力学参数不同，甚至差别很大，为实现对混凝土芯墙土坝的渗流稳定与边坡稳定的准确评价，通过对坝体填土层的细分处理，建立数值分析模型，并对坝体的渗流稳定和边坡稳定进行分析。结果表明，水位骤降工况下，混凝土芯墙土坝下游出口处渗流坡降最大、上游边坡最易失稳；校核水位工况下，下游边坡最易失稳。Concrete core wall earth dam is founded by filling earth one layer by layer, but each layer of the filled soil in different soil mechanics parameters such as distinct density and consolidation, even far from each other because of construction technology. In order to evaluate accurately whether the slope slides and seepage gradient is suitable or not, we build calculating model of earth dam which has concrete core wall through subdividing the filled earth layers. Using this analysis model, the dam seepage stability and slope stability are analyzed. The results show that in the water level dip conditions,concrete core wall earth damrs seepage gradient downstream outlet is the largest and the slope upstream is most instable; in check water conditions, the slope downstream is the most instable.

关 键 词：混凝土芯墙土坝 渗流稳定 边坡稳定 数值分析 极限平衡法 

分 类 号：TV641[水利工程—水利水电工程]