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牛栏江—草海补水与西园隧洞协同运行方案研究 预览

Study on coordinated operation scheme of water diversion project from Niulanjiang to Caohai Lake and Xiyuan tunnel project
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摘要 滇池草海是昆明城区居民休闲娱乐的重要场所和城市名片。为加快草海水体循环与交换、提升湖区水环境质量,近期陆续实施了牛栏江草海应急补水工程、新老运粮河水体净化生态工程、海埂大堤水体置换通道工程和西园隧洞工程,为草海环湖截污和清污分流提供了必要的水资源条件,实现了湖区清污水的分向流动,缩短了清流区水体的换水周期。工程协同运行结果表明:草海清流区水质与牛栏江来水状况线性相关性显著,TP浓度主要受牛栏江来水影响与控制,TN浓度受入湖河流水质影响显著;清流区水质浓度与西园隧洞工程排水量相关性显著,并随着排水量增加呈现明显的改善趋势;牛栏江草海补水工程适宜的补水规模为3.0m^3/s,在通过海埂大堤水体置换通道排水维持湖面良好水景观的同时,牛栏江来水应尽可能通过西园隧洞出口排水,以便最大程度地发挥草海各项水污染治理工程的综合效益。 In order to speed up water circulation and exchange in Caohai Lake and improve water quality in the lake, a series of projects were implemented in succession, including Niulan River-Caohai emergency water supplement project, water eco-compositive purifying project in old and new Yunliang River, Haigeng bank water replacement channel project, and Xiyuan tunnel project, all of which provide necessary water resource for sewage interception and separated drainage. As a result, the sewage and clear water in the lake area is separated and water exchange cycle is shortened. The results of coordinated operation of projects show that:① there is a significant linear correlation between water quality of the clear water area of Caohai Lake and water from the Niulan River, and TP concentration is mainly affected and determined by the water coming from the Niulan River while TN is influenced by the quality of water coming from the rivers in the lake basin;②the water quality in clear water zone is highly correlated with the water discharge quantity coming from Xiyuan tunnel project, and it tends to be well improved as discharge quantity goes up;③the appropriate water replenishment by Niulan-Caohai project is suggested as 3.0 m^3/s;although Haigeng bank water replacement channel project helps maintain a favorable water landscape, the water coming from the Niulan River should be discharged by Xiyuan tunnel so as to give full play to the comprehensive benefits of Caohai water pollution control projects.
作者 姚云辉 马巍 施国武 班静雅 齐德轩 YAO Yunhui;MA Wei;SHI Guowu;BAN Jingya;QI Dexuan(Water Environment Department of China Institute of Water Resources and Hydropower Research,Beijing 10038,China;Management Office of Xiyuan Tunnel in Kunming,Kunming 650228,China;Yunnan Water Conservancy and Hydroelectric Survey,Design and Research Institute,Kunming 650021,China)
出处 《人民长江》 北大核心 2019年第5期133-139,共7页 Yangtze River
基金 国家重点研发计划项目(2017YFC0505305).
关键词 水污染治理 协同运行方案 清污分流 牛栏江草海补水工程 草海 滇池 昆明市 water pollution treatment coordinated operation scheme separated drainage method Niulanjiang-Caohai water replenishment project Caohai Dianchi Lake Kunming City
作者简介 姚云辉,男,高级工程师,主要从事水利工程建设、管理及滇池防洪与水污染治理研究。E-mail:1378892347@qq.com;通讯作者:马巍,男,副总工程师,教授级高级工程师,博士,主要从事水环境模拟、水生态修复与调控研究。E-mail:79658466@qq.com.
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