某大型雨水泵站与调蓄池合建工程设计

在排水系统末端建设雨水泵站及调蓄池是提高城市排水防涝能力,同时控制初期雨水污染的有效途径.随着城市建设用地日益紧张,越来越多的雨水泵站和调蓄池开始采用合建的形式.现以上海市某雨水泵站及调蓄池合建设计为例,分析泵站与调蓄池合建形式的选择,详细介绍工程设计方案及建成后的运行模式.该泵站设计流量22.2 m3/s,调蓄池设计规模11 000 m3,结合用地条件及周边环境,泵站及调蓄池选用"平铺设置式"方案.针对项目建设用地小、周边环境复杂、景观要求高的特点,将各构筑物同基坑进行集约化布置,采用"两墙合一"的地下连续墙,建设一座花园型、海绵型泵站,并结合水力模型、BIM等新技术,对设计方案进行优化.此案例可为其他雨水泵站与调蓄池合建工程提供一定的借鉴.

Engineering Design of Combined Construction of Large-scale Rainwater Pumping Station and Storage Tank

The construction of rainwater pumping stations and storage tanks at the end of the drainage system is an effective way to improve the urban drainage and waterlogging prevention capabilities while controlling the initial rainwater pollution. With the increasing shortage of urban construction land, more and more rainwater pumping stations and storage tanks begin to be built together. Taking a combined construction design of rainwater pumping station and storage tank in Shanghai as an example, the selection of combined construction form of pumping station and storage tank is analyzed, and the engineering design scheme and the operation mode after completion are introduced in detail. The design flow rate of the pumping station is 22.2 m3/s, and the design scale of the storage tank is 11 000 m3. Combined with the land conditions and surrounding environment, the "tiling-type" scheme is selected for the pump station and the storage tank. In view of the limited construction land, complex surrounding environment and high landscape requirements, all structures are arranged intensively with foundation pit. The "two walls in one" underground diaphragm wall is used. A garden-type and sponge-type pumping station is built. Combined with the new technologies of hydraulic model and BIM, the design scheme is optimized. The case can provide a certain reference for the other combined construction projects of rainwater pumping station and storage tank.