出水口泵闸组合式改造的实践和思考

Practice and Reflection on Reconstruction of Outlet Combined with Pump and Gate

摘要:

面对老城区排水管网重现期低、升级改建影响大、施工困难的现状，老城区积水改造采用清淤疏通并修复现状排水管网的措施，同时将出水口改造为泵闸组合式设施。经验算，通过现状重现期为0.5年的排水管网及新建规模与之相匹配的排涝泵站，系统的排水能力可应对的降雨量等级为“短时大暴雨”，能充分发挥现状排水管道的排水能力，实际效果较好。泵闸组合式出水口改造措施对周边环境的影响较小，工程造价较低，对老城区局部积水具有明显的改善作用，可为其他老城区积水点的改造提供参考。

Abstract:

Faced with the current situation of low recurrence period of drainage pipe networks in old urban areas, significant impacts of upgrading and reconstruction, and construction difficulties, the measures such as clearing and repairing the existing drainage pipe networks are taken in the waterlogging renovation of old urban areas, and at the same time, the outlet is reconstructed into pump-gate combined facilities. After calculation, through an existing drainage pipe network with a recurrence period of 0.5 years and the newly constructed waterlogging drainage pumping station with a scale matching it, the drainage capacity of the system can handle a rainfall level of “short-term rainstorms”, which can fully utilize the drainage capacity of the existing drainage pipes, and the actual effect is good. The pump-gate combined outlet renovation measures have a relatively small impact on the surrounding environment, the engineering cost is lower, and the improvement effect on local waterlogging in the old urban area is significant, which can provide a reference for the renovation of waterlogging points in other old urban areas.