摘要
针对新疆乌鲁木齐河分洪工程渠首枢纽布局特点,采用1∶40几何比尺建立了渠首枢纽整体模型。通过模型试验,观测和分析了各特征洪水条件下,枢纽上下游水流流态、流速分布,泄水排沙建筑物的泄流能力及下游冲刷等。通过模型试验对导墙体型和枢纽下游多种消能形式进行了多方案的比较,并最终推荐了双圆弧导墙形式,提出了取消消力池,采用钢筋笼防护段消能的建议,确定了下游消能防护的形式和范围。
In view of the layout characteristics of the headwork of Urumqi River Flood Diversion Project,the overall model of the headwork was established at a geometric scale of 1:40.Model test was conducted to observe and analyze the flow pattern and velocity distribution upstream and downstream of the headwork,the discharge capacity of discharging structure and downstream scouring under various characteristic flood conditions.The shape of guide wall and various energy dissipation modes were compared through model test,based on which the double-arc guide wall scheme was recommended;it was suggested to cancel the stilling basin and adopt the reinforcement cage protection section for energy dissipation;the form and scope of the downstream energy dissipation protection were determined.
作者
张玲
ZHANG Ling(Xinjiang Water Conservancy and Hydropower Survey,Design and Research Institute,Urumqi 830000,China)
出处
《广西水利水电》
2021年第2期10-12,共3页
Guangxi Water Resources & Hydropower Engineering
关键词
渠首枢纽
双弧导墙
消能防护
模型试验
乌鲁木齐河分洪工程
Headwork
double-arc guide wall
energy dissipation protection
model test
Urumqi River Flood Diversion Project
