丘陵缓坡地带下沉庭院雨水系统设计

为排除下沉庭院雨水,设计充分利用丘陵缓坡地地势,将小区雨水系统分为两套系统混合排放,高处楼幢下沉庭院与小区场地、屋面雨水合用管道采用重力流排放,低处楼幢下沉庭院雨水单独汇流集中设置提升泵站加压排放。结合工程实例,介绍了雨水重力流、水泵压力流混合排放系统的关键设计参数,并与常规方式进行了综合造价及技术指标比较。

Storm water system design of sinking courtyard in hilly gentle slope zone

To drain the storm water from sinking courtyard, the design made use of gentle slope in the hilly area to divide the storm water system into two systems. The rainfall on the sinking courtyards of the buildings on high place, the subdistrict yards and the roof will be drained by gravity flow, while the rainfall on the sinking courtyards of the buildings on low area will be drained to the rainwater pump station and pumped to drainage. With practical projects, this paper introduced the key design parameters of combined drainage system of gravity flow and pressure flow and compared the total cost and technology index of this system with that of normal system.