引汉济渭初期运行黄池沟流量调节方案研究

Study on flow regulation scheme of Huangchigou water distribution project during initial operation of Hanjiang-to-Weihe River Water Diversion Project

水位控制是输配水工程能否稳定输水的关键。黄池沟配水枢纽是引汉济渭工程沿线唯一的调节工程,由越岭段末节点、黄池沟调蓄池、南北干线首节点组成,开展不同工况下流量调节是保障引汉济渭工程安全生产、及时发挥效益亟待研究的问题。首先通过构建越岭段末节点到调蓄池、调蓄池到南干线首节点、调蓄池到北干线首节点的非恒定流伯努利能量方程,建立了黄池沟水位动态控制模型;然后采用牛顿-辛普森法和Pressiemann差分法对模型进行求解,获得了不同充水方案和不同配水流量下调节控制策略,并分析了不同工况下水力过渡特性。结果表明:该模型能够获取不同工况下水位动态调节控制策略,同时水力过渡过程相对平稳,能够保证工程安全运行。研究成果可为类似输配水工程的水位动态控制提供参考。

Water level control is the key to the stable water conveyance of water distribution projects.The Huangchigou water distribution project is the only regulation project along the Hanjiang-to-Weihe River Water Diversion Project.It is composed of the end node of the cross-mountain section,the Huangchigou storage tank,and the first node of the north-south trunk line.Establishing a water level control model for the Huangchigou water distribution project and carrying out flow regulation under different working conditions areurgent problems to ensure the safe production and timely benefit play of the diversion project.Firstly,a dynamic control model of water level in Huangchigou water distribution project was established by constructing the Bernoulli energy equation of unsteady flow for the end node of the ridge section to the regulating reservoir,the regulating reservoir to the head node of the south trunk line,and the regulating reservoir to the head node of the north trunk line respectively.Then the Newton-Simpson method and Pressiemann difference method were used to solve the model.The control strategies under different water filling schemes and different water distribution flow rates were obtained,and the hydraulic transition characteristics under different working conditions were analyzed.The results showed that this model can obtain reliable water level dynamic adjustment control strategy under different conditions,and the hydraulic transition process was relatively stable,which could ensure the safe operation of the project.The research results can provide ideas for the dynamic control of water level in similar water distribution projects.