九甸峡混凝土面板堆石坝应力变形分析  

Stress and Deformation Analysis of Jiudianxia Concrete Face Rockfill Dam

作　　者：徐泽平[1] 王志强[2] 吕生玺[2] 

机构地区：[1]中国水利水电科学研究院,北京100048 [2]甘肃省水利水电勘测设计研究院,甘肃兰州730000

出　　处：《水力发电》2010年第11期67-70,共4页Water Power

摘　　要：九甸峡水利枢纽工程混凝土面板堆石坝是目前国内建在深厚覆盖层上的最高面板坝,最大坝高133 m。坝址区岸坡陡峭,地形、地质条件复杂,大坝的应力应变状态对工程的安全和运行至关重要。大坝三维有限元数值分析研究表明,采用在深厚覆盖层中防渗墙截渗、平趾板柔性连接、覆盖层加固处理、软基平趾板的设计方案,坝体沉降变形、面板应力及变形形态虽与趾板建于基岩上的混凝土面板坝有所差别,但其变形量及应力水平基本适中,通过采取适当的工程措施,可以保证大坝安全,达到节省工程投资、加快工程进度的目的。The 133 m-high Jiudianxia Dam is currently the highest CFRD dam built on deep overburden in China.As the complex topographic and geological conditions in dam site,the stress-strain of dam is important to project security.The stress and deformation of the dam was analyzed by three-dimensional finite element method.The cutoff wall in deep overburden for seepage control,the horizontal plinth and flexible connection and the overburden reinforcement were designed for the dam.The simulation shows that the dam settlement,slab stress and the dam deformation have differences with the CFRD dams built on bedrock,but the deformation and stress can be basically controlled.By adopting appropriate engineering measures,the dam safety can be ensured and the investment and construction can be improved.

关 键 词：九甸峡 混凝土面板堆石坝 应力变形分析 Dam Concrete Face Deformation Analysis 深厚覆盖层 水利枢纽工程 大坝安全 趾板 加快工程进度 混凝土面板坝 有限元数值 应力水平 设计方案 柔性连接 面板应力 加固处理 工程投资 工程措施 

分 类 号：TV73[水利工程—水利水电工程] TM612[电气工程—电力系统及自动化]