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为预测城市化后的滇池环湖截污干渠的容纳能力,协调截污干渠与其他截污系统实现经济、高效截流,利用SWMM对用于远期规划的截污管网进行模型搭建。选取了当地典型降雨用于模拟,以预测干渠溢流点和对末端污水处理厂的冲击负荷。结果表明:城市化后,截污干渠能容纳总降雨量16mm及以下的中、小雨的全区域同强度降雨,而在总降雨量16mm以上的中雨、大雨、暴雨下将会有节点产生溢流;在总降雨量16mm左右的全区域降雨条件下,干渠出口处流量与干渠末端污水处理厂的设计流量比在8~9倍。
In order to predict the capacity of urbanized Dianchi lake sewer interception trunk canal, coordinate the intercepting sewers with other interception systems to achieve economic and efficient river closure, and use SWMM to model the interception sewer network for long-term planning. Local typical rainfall was selected for modeling to predict the dry-channel overflow point and the impact load on the terminal wastewater treatment plant. The results show that, after urbanization, the intercepted trunk canal can accommodate the same intensity rainfall in medium and small rainfall with total rainfall of 16 mm and below, while nodes will overflow under moderate, heavy rain and heavy rainfall with a total rainfall of 16 mm Flow; at the total rainfall of about 16mm rainfall throughout the region, the mainstream outlet flow and the end of the design of the sewage treatment plant flow ratio of 8 to 9 times.