古水水电站面板堆石坝应力变形数值仿真计算研究

The Deformation Calculation Study of Numerical Simulation of Concrete Face Rock-fill Dam Stress for Construction of Gushui Hydropower Project

通过数值仿真手段,对云南澜沧江古水电站面板堆石坝进行应力变形计算,并针对坝体的位移、应力、应力水平以及面板的挠度变形进行了分析研究,并针对所拟定的三组计算参数方案进行敏感性分析。结果表明:古水面板堆石坝坝体及面板的应力变形分布符合一般规律,坝体堆石料的变形及面板的挠度变形均较为适中,坝料抗剪具有较高的安全裕度,总体来说,坝体及面板的应力变形在可控范围之内。

By means of numerical simulation the paper carried out the stress deformation calculation of the concrete face rock-fill dam of Gushui Hydropower Project in Yunnan Province, made analysis and study according to displacement, stress and stress level of the dam body and deflection deformation of the con-crete face slab and conducted sensibility analysis according to the proposed 3 groups of calculation parame- ters. The results show that the stress deformation distribution of Gushui concrete face rock--fill dam body and concrete face slab conforms to the general laws, the deformation of the dam body rock-fill material and the deflection deformation of the concrete face are both moderate and the shear of the dam materials al-lows a large margin of safety. Taken as a whole, the stress deformation of either the dam body or the con-crete face is controllable.