论文部分内容阅读
雨水管道内的沉积现象不仅削弱了管道的排水能力,而且沉积的污染物还会对管道造成腐蚀,或在降雨时随径流排至受纳水体从而对其造成严重污染。对北京城区部分雨水检查井连接雨水管道内沉积物的沉积状况进行调研与分析,讨论了沉积状况的主要影响因素。结果表明,调研区域雨水排放管道内沉积现象普遍存在,且沉积量随管道管径的增加而增大。此外,不同材质管道内的沉积量也存在明显差异。该调研结果可为城市排水系统的管理提供参考,为城市水体污染控制提供一定的依据。
Deposition within the stormwater pipeline not only weakens the drainage capacity of the pipeline, but also deposits contaminants that can corrode the pipeline or run off to the receiving water body during rains, causing serious pollution. The sedimentation of sediment in rainwater pipeline connected with some rainwater inspection wells in urban area of Beijing was investigated and analyzed. The main influencing factors of sedimentary conditions were discussed. The results show that the deposition of rainwater in the research area is widespread, and the deposition amount increases with the increase of the pipe diameter. In addition, there is a significant difference in the amount of deposits in different material pipelines. The survey results can provide reference for the management of urban drainage system and provide some basis for the control of urban water pollution.