南水北调中线总干渠逆止阀处地下水进入量及其对干渠水质影响分析——以焦作某内排段为例  

Groundwater Inflow of Check Value and Its Impact on Main Canal Water Quality in the Middle Route of S-N Water Transfer Canal——Taking Jiaozuo as an Example

作　　者：任仲宇[1] 薛潇[1] 高安虎 荀继萍 巩奕成 

机构地区：[1]北京工业大学建筑工程学院北京市水质科学与水环境修复重点实验室,北京100124 [2]辽宁工程技术大学资源与环境工程学院,辽宁阜新123000

出　　处：《北京工业大学学报》2015年第2期281-286,共6页Journal of Beijing University of Technology

基　　金：国家重大专项资助项目(2009ZX07212-003);国家科技支撑计划资助项目(2011BAC12B00)

摘　　要：为保障南水北调中线总干渠水质安全,以河南焦作某内排段为研究对象,基于GMS地下水数值模拟系统对逆止阀处地下水流向流线、进入量及其对干渠水质影响进行了模拟分析.由8种水量情景模拟结果得出:逆止阀处地下水进入量主要受地下水和总干渠水位差的影响,二者呈正相关.以SO2-4、NH3-N、NO3-N为分析因子,假定总干渠水质类别为Ⅱ类水,通过最差情况分析得出:地下水经逆止阀进入总干渠后,干渠水中SO2-4、NH3-N、NO3-N浓度值均超标,水质类别降为Ⅲ类水.采用逆推法分析得出:当干渠水中SO2-4、NH3-N、NO3-N质量浓度分别不超过221.676 8、0.067 9、9.083 2 mg/L时,即便污染的地下水通过逆止阀进入到总干渠,也能保证干渠水符合Ⅱ类水质标准.To ensure the security of water quality in the Middle Route of S-N Water Transfer Canal, taking Jiaozuo as example, the groundwater inflow of check valve and its impact on main canal water quality were analyzed based on GMS. Main control factor of groundwater inflow through the check valve was water level difference between groundwater and main canal, which were positively correlated. With SO2-4 、NH3-N、NO3-N as analysis factors, assuming that the water quality of the main canal was case Ⅱwater, using the method of worst case analysis, it was concluded that canal water changed into case Ⅲwater while the groundwater flowed into the canal. Under the premise that the concentration of three＆amp;nbsp;pollutants is below 221. 676 8, 0. 067 9, and 9. 083 2 mg/L, respectively. Through the method of adverse deduce, the main canal water quality still remains to be case Ⅱwater even if the groundwater flows into the canal.

关 键 词：南水北调中线 内排段 逆止阀 GMS 地下水流量 

分 类 号：TV61[水利工程—水利水电工程]