马莲河高含沙水开发利用模型分析

Analysis of the Development and Utilization Model of High-sand & Water Containing in Malian River

分析马莲河高含沙水的时空分布规律,探讨高含沙水的形成机理,对高含沙水进行开发利用,对缓解庆阳市水资源的压力具有重要意义。结合马莲河典型年洪水过程,建立高含沙水利用模型,利用部分汛期洪水模拟结果,提出中下游汛期高泥沙水利用方案。模拟结果显示:通过一定的工程和非工程措施,两个取水点可利用洪水量分别为592万m^3和4840万m^3。取水点拦蓄工程有效库容需分别达到140万m^3和900万m^3,并建立24万m^3和160万m^3的沉沙池。提出的汛期洪水利用可行性方案具有一定的指导作用。

The temporal and spatial distribution of high-sand & water containing in Malian River is analyzed, and the formation mechanism of high-sand & water is discussed. The development and utilization of high-sand water is of great significance to alleviate the pressure of water resources in Qingyang City. Combined with the typical annual flood process of the Malian River, a high-sand water utilization model was established, and some flood season flooding simulation results were used to propose a high-sand water utilization plan in the middle and lower reaches. The simulation results show that through certain engineering and non-engineering measures, the water intakes of the two water intake points are 5.92 million m3 and 48.4 million m3 respectively. The effective storage capacity of the water intake point storage project needs to reach 1.4 million m3 and 9 million m3 respectively, and establish a sinking pool of 240,000 m3 and 1.6 million m3. The proposed feasibility plan for flood use in flood season has a certain guiding role.