基于海绵城市理念探讨暗渠在防洪排涝中的优化设计

Optimal design ideas for underground canal flood control and drainage based on sponge city concept

针对暗渠内黑臭水体治理,设计开发了截污管网系统,在暗渠敷设截污管进行排口截污,达到雨污分流效果。但暗渠作为密集型城市防洪排涝唯一通道,暗渠两侧截污管的敷设必定影响暗渠防洪排涝能力,为此,在暗渠内敷设截污管网系统的基础上设计开发海绵城市湿塘系统,结合周围场地和空间调蓄雨水,提高暗渠内防洪排涝能力,对其进行理论研究,分析其可行性。结果表明在理论上是可以进行此项工程的,优化暗渠防洪排涝能力。

Aiming at the treatment of black and odorous water bodies in the culvert,a sewage interception pipe network system was designed and developed,and the culvert pipe was installed in the culvert to discharge sewage at the outlet to achieve the effect of rain and sewage diversion.However,the culvert is the only channel for dense urban flood control and drainage.The laying of sewage interception pipes on both sides of the culvert must affect the flood control and drainage capacity of the culvert.To this end,we propose an idea to design and develop a sponge city based on the sewage interception pipe network system installed in the culvert.The wet pond system,combined with the surrounding site and space to regulate the storage of rainwater,improves the flood prevention and drainage capacity in the culvert,conducts theoretical research on it,and analyzes its feasibility.The results show that this project can be carried out in theory to optimize the flood control and drainage capacity of the culvert.