摘要
石垭子水电站河谷狭窄,单宽流量大,坝后不远处为规模较大的堆积滑坡体,受地形地质条件和工程建设条件限制,工程只能采用挑流消能,而常规挑流消能工雾化水流将会影响坝后左岸堆积体的稳定。通过泄洪消能工体型设计与模型试验研究,提出一种新型的泄洪消能工———半圆锥挑坎双缝消能工。研究结果表明,该消能工能较好的解决下游消能与减小雾化问题,自身结构抗空蚀破坏性能也比较好。
Shiyazi Hydropower Station is characterized by narrow vally and large unit discharge , and a relatively large sliding mass is developed not far from the dam toe .Affected by topographical and geological conditions and restricted by construction conditions ,ski-jump energy dissipation is the only pattern to be adopted ,but the atomized water formed by conventional ski-jump energy dissipation structure will affect the stability of the downstream sliding mass on the left bank . By carrying out the shape design of energy dissipation structure and hydraulic model tests ,a new type energy dissipation structure named semi-cone-shaped ski-jump energy dissipation structure with double joints is proposed .The test results show that this kind of energy dissipation structure can achieve the better effects of energy dissipation ,atomization reduc-tion and cavitation resistance .
出处
《水利与建筑工程学报》
2014年第1期201-204,共4页
Journal of Water Resources and Architectural Engineering
关键词
泄洪消能
水力学模型试验
压强
流速
flood discharging and energy dissipation
hydraulic model test
pressure intensity
flow velocity
