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出水口作为雨水塘的重要组成,它的构造、尺寸等会直接影响雨水塘削峰减排、改善水质等效果。出水口分多种类型,其中多级出水口既能控制雨水塘水位,又能增加雨水水力停留时间,控制外排流量,应用范围很广。在分析多级出水口构造特点及其与雨水塘控制目标的关系的基础上,对雨水塘的类型及其多级出水口构造进行了比较,对多级出水口的设计方法进行了探讨,提出了基于多目标控制的多级雨水口的实用设计程序。
Outlets as an important component of the rainwater pond, its structure, size, etc. will directly affect the reduction of peak rainfall and reduce emissions, improve water quality and other effects. There are many types of water outlets, of which the multi-stage water outlet can control the water level of rainwater ponds, increase the retention time of rainwater, and control the discharge rate of external water so as to have a wide range of applications. Based on the analysis of the structural characteristics of multistage water outlets and their relationship with the control targets of rainwater reservoirs, the types of storm water reservoirs and the structure of multi-stage water outlets were compared. The design methods of multistage water outlets were discussed. Practical design program of multi-level gully based on multi-objective control.