水库泥沙淤积相关问题的研究是大型水库建设非常重要且必要的研究课题。通过库区55 km范围的泥沙物理模型试验,研究2种泥沙调度运行方式下(方式1为前50 a汛期高水位运行,后50 a汛期低水位运行;方式2为100 a保持汛期低水位运行)水库泥沙淤积演变过程、库尾淤积、淤积量等情况。研究表明,不同运行方式下,汛期坝前水位对水库泥沙淤积的沿程发展、库尾淤积高程等影响较大。通过比较分析,水库运行前50 a,2种运行方式下泥沙淤积差别较大,运行方式2,汛期保持低水位运行更有利于水库排沙减淤;水库运行后50 a,2种运行方式相同。随着运行年限的增加,2种运行方式下泥沙淤积趋于相同。
We established physical model of sedimentation in 55km range in the reservoir area to study the sediment characteristics including sedimentation evolution and sedimentation amount. Two different scheduling modes of a reservoir was taken as case study. Research suggests that the control water level in flood period is very pivotal to the vertical distribution of reservoir sedimentation and the sedimentation at the reservoir tail. In the first 50 years of operation, the difference of sedimentation between the two scheduling modes is quite large: for the second mode, low water level in flood season is more conducive to sediment sluicing and deposition reduction. After 50 years of operation, the sedimentation in the two scheduling modes tends to be similar.
[1] 韩其为,杨小庆.我国水库泥沙淤积研究综述.中国水利水电科学研究院学报,2003,1(3):169-177. (HAN Qi-wei, YANG Xiao-qing. A Review of the Research Work of Reservoir Sedimentation in China. Journal of China Institute of Water Resources and Hydropower Research, 2003, 1(3): 169-177.(in Chinese))
[2] 韩其为.水库淤积.北京:科学出版社,2003. (HAN Qi-wei. Reservoir Sedimentation. Beijing: Science Press, 2003.(in Chinese))
[3] 林一山.水库长期使用问题.人民长江,1978,(2):1-8. (LIN Yi-shan. The Problem of Reservoir’s Long-term Use. Yangtze River, 1978,(2):1-8. (in Chinese))
[4] 韩其为.长期使用水库的平衡形态及淤积变形研究.人民长江,1978,(2):18-35. (HAN Qi-wei. Study on the Equilibrium Shape and Deformation of Reservoir Sedimentation. Yangtze River, 1978,(2):18-35. (in Chinese))
[5] 高学平,洪柔嘉,赵耀南.全沙模型试验的一种设计方法. 水利学报,1996,(6): 57-62. (GAO Xue-ping, HONG Rou-jia, ZHAO Yao-nan. A Method Concerning the Design of Total Sediment Transport Model Test . Journal of Hydraulic Engineering,1996,(6): 57-62. (in Chinese))
[6] 窦国仁.全沙模型相似律及设计实例.水利水运科技情报,1997,(3):1-20. (DOU Guo-ren. A Similarity Theory Concerning the Design of Total Sediment Transport Models with Reference to a Particular Project. Water Transportation Science and Technology Information,1997, (3):1-20. (in Chinese))
[7] 沙玉清.泥沙运动学引论.北京:中国工业出版社,1965. (SHA Yu-qing. Introduction of Silt Kinematics. Beijing: China Industry Press,1965. (in Chinese))
