Mike 11模型在花凉亭灌区入渠洪水复核分析中的应用

Application of MIKE 11 Model in Flood Review Analysis of of Drainage in Hualiangting Irrigation Area

安庆市花凉亭大型灌区为江淮丘陵灌区,灌区内总干、干渠基本上是沿等高线或接近分水岭布置,渠道上游有大量坡面来水,现状泄洪体系相对复杂。为复核分析灌区干渠现状泄洪体系规模问题,建立了基于MIKE11的一维水动力学模型,能较好模拟渠道输水情况,以及分段控制泄洪和多泄洪闸联合泄洪的过程,分析结果与历史实测及运行记录整体吻合,表明灌区现状泄洪体系能满足下泄设计标准入渠洪水的要求,模型推求的设计水面线、流速等相关成果可为泄洪建筑物规模和标准的确定提供设计依据。

The Hualiangting Irrigation Area in Anqing City is located in the Jianghuai Hilly Irrigatioin Area.The main canal in the irrigation area is basically arranged along the contour or near the watershed.There is a large amount of water coming from slope upstream of the channel,and the current flood discharge system is relatively complicated.In order to review and analyze the scale of current flood discharge system of the main canal in the irrigation area,a one-dimensional hydrodynamic model based on MIKE 11 was established,which can better simulate the water conveyance situation and the process of joint flood discharge by section control flood discharge and multi-sluice.The analysis results are consistent with the historical measurement and operation records,indicating that the current flood discharge system in irrigation area can meet the requirements of design standard of flood discharge into canal.Relevant results such as design water surface line and flow velocity derived from the model can provide the design basis for determining the scale and standard of flood discharge structures.