关于北京城市排涝问题的探讨

随着城市建设规模的不断扩大,现有雨水管网系统很难支撑因城市建设用地增加、下垫面变化和气候变化等因素造成的城市内涝。本文分析了造成北京中心城内涝的原因,阐述了政府在加大力度建设雨水管道和雨水排除设施的同时,需将重点放到雨水源头控制、利用和建设城市蓄滞洪区建设上来。只有通过多种方式的雨水排除与利用的系统建设,才能使雨水在源头得以控制、在雨水管道中正常排放、在尾闾进行蓄滞,真正起到提高城市排涝标准,确保城市防洪和雨水综合利用的目的。

Discussion about Urban Stormwater Control in Beijing

With the constant expansion of urban built-up area,the underlying surface hardening and the climate change,the existing drainage system is difficult to cope with the water logging.This paper analyzes the reasons of water logging in the central city of Beijing,explains the necessity to focus into the storm water source control,reuse,flood storage and detention while the government increases the efforts of the drainage facilities construction.Only in these ways,the rain water demand can be controlled at the source,reduced in the rain water pipe and stagnated in the tail of drainage system.The outcome will really serve to improve the standards of urban drainage,flood control and water utilization to ensure the city purposes.