某市政道路排水箱涵雨、污分流改造的思考与设计

Thinking and Design of Rain and Sewage Diversion Transformation of Municipal Road Drainage Box Culvert

针对某市某区域的河流出水口上游大断面排水箱涵存在的雨污混流问题进行了具体工况分析,解决了该排水箱涵改造过程中存在的管线交叉、地面高程起伏过大、管内雨污混流等问题。论文具体提出了倒虹管设计、圆管顶管施工及截流井设置等解决措施,消除了污水直排自然水体现象,缓解了下游污水处理厂运行负荷,实现河流出水口排放功能。列举的工程概况类比及方案设计可为以后相似工程提供参考思路。

The specific condition analysis is targeted at the problem of rain and sewage diversion transformation in the large section drainage box culvert at the upstream of the river outlet in a certain area of a city.The problems such as pipeline crossing,excessive fluctuation of ground elevation and mixed flow of rain and sewage are solved.In this paper,the design of inverted siphon,the construction of pipe jacking and the setting of intercepting well are proposed to eliminate the phenomenon of direct discharge of sewage into natural water,alleviate the operation load of downstream sewage treatment plant,and realize the discharge function of river outlet.The engineering general situation analogy and scheme design listed in this paper can provide reference ideas for similar projects in the future.