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北京是一个缺水的城市,这是人所共知的事实,而北京城排水也存着十分严重的问题,却鲜为人知。北京城近郊区位于水定河冲积扇的脊背地带,西北高,东南低,主要排水系统自北向南有清河、坝河,通惠河、凉水河,所属沟渠86条,总长度约580公里,流域面积约1230平方公里。河道现状是水源不足,水质污秽。在日常输水和汛期排洪上存在如下问题:1.河道淤积严重。由于大部分河道建国后
Beijing is a water-short city, which is a well-known fact. However, there are still very serious problems in draining water in Beijing, but little is known about it. The suburbs of Beijing are located on the back of the alluvial fan of the Shuihe River, high in the northwest and low in the southeast. The main drainage system includes Qinghe, Bahe, Tonghui and Liangshui rivers from north to south with 86 ditches and a total length of 580 km. An area of about 1230 square kilometers. Current status of the river is inadequate water, water pollution. In the daily water and flood discharge floods on the following issues: 1. River siltation serious. Since most of the river after the founding of the country