亚碧罗水电站下泄消能设计与坝型的选择  

The Design of the Under-pour Energy Dissipation and the Selection of the Dam Type of the Yabiluo Hydropower Project

作　　者：丁浩铎[1] 于洋[2] 刘小军[1] 南军虎[3] 吴晓丽[3] 牛助农[3] 

机构地区：[1]中国大唐集团公司云南分公司,四川攀枝花617000 [2]中国人民武装警察部队水电第一总队,广西南宁530000 [3]西安理工大学水力学所,陕西西安710000

出　　处：《云南水力发电》2010年第6期71-77,共7页Yunnan Water Power

摘　　要：亚碧罗水电站坝址处河道天然落差较大,河谷狭窄,且汛期流量大。通过水工模型试验对亚碧罗水电站面板堆石坝方案与碾压混凝土重力坝方案下游河道内的水流流态、流速分布、水面波动以及河道冲淤等相关水力特性进行量测及对比分析,从而得到具有窄河谷、高水头、大泄量特征的大型水电站在项目可研阶段泄洪建筑物布置与坝型选择之间的相互制约关系。结合工程实际情况和通过试验采用了扭鼻坎、窄缝式鼻坎、曲面贴角窄缝式鼻坎以及在溢洪道出口处设置分流墩等方式对挑射水舌形态进行优化。The river channel at the dam site of the Yabiluo Hydropower Project is characterized by large natural water head,narrow valley and large discharge in the flood season.The hydraulic model tests were carried out for both concrete face rockfill dam alternative and roller compacted concrete gravity dam alternative of the Yabiluo hydropower project and the relevant hydraulic characteristics such as flow patterns,flow velocity distributions,water level fluctuations and silt removal in the downstream river channel were measured,compared and analyzed for the two alternatives,so that the relations of conditioning each other between the arrangement of flood discharging structures and the dam type selection have been determined at the feasibility study stage of a large hydropower project featured by narrow valley,high head and large discharge.The shape of the jet trajectory nappe has been optimized through test and comparison for different ways of using a torsion flip bucket,a slit-type flip bucket,a slit-type flip bucket with a curved surface and a fillet,and flow dividing piers at the spillway outlet according to the actual condition of the project.

关 键 词：窄河谷 高水头 泄流消能布置 挑流鼻坎 下游河道冲淤 方案比选 

分 类 号：TV321[水利工程—水工结构工程] TV322