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通过对紫禁城近600年无暴雨积水研究,回顾新中国成立后,北京水建设尤其是排水设施建设的历程,60多年依然沥涝频发,灾情不断,感悟颇深。北京的防洪排水是个复杂的系统工程。史料证实,水灾是北京最大的自然灾害。灾害性天气是北京特殊自然地理环境形成的。当今“内陆城市”的北京城,非常需要一个宽深、快捷的行洪排水通道。落实前三门护城河“远期应予以恢复”的规划,势必与旧城街区改造、通惠河一体化整治、再生水源建设相结合,将为彻底解决城中心区行洪排水创造条件。同时,对提升北京的地位、形象、改善生态环境、美化市容景观,以及再生水利用等各方面具有显著作用。应抓住当今空前大好时机,运用现代科技实力,在古都城中心区创建一条“北京运河”。
Through the study of the rain-free water in the Forbidden City in the recent 600 years, after reviewing the establishment of new China, the construction of water in Beijing, especially the construction of drainage facilities, is still frequent in the past 60 years. Flood control and drainage in Beijing is a complicated systematic project. Historical facts confirm that floods are the largest natural disasters in Beijing. Disastrous weather is formed by Beijing’s special natural and geographical environment. Today “inland city ” of Beijing city, very much need a wide deep, fast flood drainage channel. The implementation of the first three moat “long-term should be restored ” plan, bound to transform the old city, Tonghuihe integrated remediation, the construction of renewable water sources, will be to completely solve the downtown area flood drainage to create the conditions. At the same time, it plays a significant role in enhancing the status and image of Beijing, improving the ecological environment, beautifying the landscape of the cityscape, and utilizing reclaimed water. We should seize the unprecedented opportunity of today and use the strength of modern science and technology to create a “Beijing Canal” in the downtown area of the ancient capital.