西南某大型水电站拱肩槽边坡开挖的变形响应研究

对基于结构网格的Euler方程及N-S方程求解器和基于非结构网格的Euler方程求解器，采用结构模态分析方法和柔度矩阵方法，对无人机大展弦比机翼在Ma=0.6,α=2?, 飞行高度20km的巡航状态下的静气动弹性特性进行了数值模拟. 验证了两种求解器对静气动弹性模拟的准确性. 同时，对模态分析方法和柔度矩阵方法进行了对比研究，发现柔度矩阵方法更适用于静气动弹性数值模拟. 另外，对应用物面法向偏转方法替代网格变形技术模拟静气动弹性进行了研究，计算表明物面法向偏转方法可以大大提高静气动弹性计算效率和克服机翼结构变形过大时动网格技术无法处理的不足.

DEFORMATION RESPONSE OF HIGH ROCK SLOPE EXCAVATION AT A LARGE HYDROELECTRIC STATION IN SOUTHWEST CHINA

The excavation and stability of hundred meters high rock slopes in water conservancy project   construction are  of important technical  issues . This paper bases  on the abundant geological investigation of a construction site and  examines the associated cut slope with height of 330 m in a large Hydroelectric Station in southwest China. The reactive deformation of the high rock slope with great sloping ratio is studied under the condition of complex geological conditions and high in-situ stresses.  The study is systematical. The basic laws and special characteristics of the deformation responses are acquired and can be classified as follows: (1) During the slope excavation, there is a strong synchronism between the slope deformation and its excavation process. (2) The high slope deformation is mainly influenced by excavation. (3) The slope deformation generally is weakened  as increase of the distance between the excavation plane and the monitoring position. Immediately after its formation,  the cut slope had small deformation and the deformed depth was also shallow.  After having been excavated for 12 to 18 months, the cut slope was stable. The  findings are helpful to the design and construction of similar high cut slopes.