引汉济渭工程水源区突发水污染事故模拟研究
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摘要
[目的]通过构建突发水污染事故模拟模型,阐明突发水污染事故后污染带的时空分布规律,得出取水口的应急时间,为引汉济渭的水质提供重要保障。[方法]构建汉江洋县汉江大桥至取水口部分的突发水污染事故模拟模型,结合实际监测资料,进行模型率定和验证,并研究污染带时空分布。[结果]在来水量为138.15m~3/s,若污染物泄漏流量为1.0m~3/s时,在事故发生49h后,污染团将对取水口造成影响,浓度峰值为0.0291g/L;若污染物泄漏流量为0.2m~3/s时,事故发生49h后,污染团将对取水口造成影响,浓度峰值为0.022g/L。在来水量为55.29m~3/s时事故发生后,污染团将不会对取水口造成影响,浓度峰值达到三类水标准。[结论]通过对突发水污染事故模拟,为引汉济渭工程的顺利实施与运行、水质安全保障提供重要保障。
[Objective]By constructing a simulation model of sudden water pollution accident,the temporal and spatial distribution pattern of pollution zone after sudden water pollution accident is clarified,and the emergency time of water intake is obtained,which provides important guarantee for the water quality of the Hanjiang-to-Weihe River.[Methods]build a simulation model of sudden water pollution accident in the Hanjiang River Bridge of Hanjiang River in Yangxian County to the water intake section.Combining with the actual monitoring data,the model is calibrated and validated,and the spatiotemporal distribution of pollution zone is studied.[Results]In Hanjiang Bridge in sudden water pollution accident,water is 138.15 m~3/s,if the contaminant leakage flow rate of 1.0 m~3/s,49 hin accidents,pollution group will have an impact on the water intake,pollution group concentration peak is 0.0291 g/L;if the contaminant leakage flow is 0.2 m~3/s,49 hafter the accident,pollution will cause effect of water intake,pollution group concentration peak is 0.022 g/L.When the water inflow is55.29 m~3/s,the pollution will not affect the intake after the accident,and the peak value ofthe pollution concentration reaches three kinds of water standards.[Conclusion]Through the simulation of sudden water pollution accident,it can provide important guarantee for the smooth implementation and operation of water diversion project and the water quality safety guarantee.
[Objective]By constructing a simulation model of sudden water pollution accident,the temporal and spatial distribution pattern of pollution zone after sudden water pollution accident is clarified,and the emergency time of water intake is obtained,which provides important guarantee for the water quality of the Hanjiang-to-Weihe River.[Methods]build a simulation model of sudden water pollution accident in the Hanjiang River Bridge of Hanjiang River in Yangxian County to the water intake section.Combining with the actual monitoring data,the model is calibrated and validated,and the spatiotemporal distribution of pollution zone is studied.[Results]In Hanjiang Bridge in sudden water pollution accident,water is 138.15 m~3/s,if the contaminant leakage flow rate of 1.0 m~3/s,49 hin accidents,pollution group will have an impact on the water intake,pollution group concentration peak is 0.0291 g/L;if the contaminant leakage flow is 0.2 m~3/s,49 hafter the accident,pollution will cause effect of water intake,pollution group concentration peak is 0.022 g/L.When the water inflow is55.29 m~3/s,the pollution will not affect the intake after the accident,and the peak value ofthe pollution concentration reaches three kinds of water standards.[Conclusion]Through the simulation of sudden water pollution accident,it can provide important guarantee for the smooth implementation and operation of water diversion project and the water quality safety guarantee.
引文
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[11]杨洁,毕军,周鲸波,等.长江(江苏段)沿江开发环境风险监控预警系统[J].长江流域资源与环境,2006,25(6):745-750.
[12]陶亚,任华堂,夏建新.河流突发污染事故下游城市应急响应时间预测——以淮河淮南段为例[J].应用基础与工程科学学报,2012,20(z1):77-86.
[13]匡翠萍,邓凌,刘曙光等.应急调水对太湖北部污染物扩散的影响[J].同济大学学报:自然科学版,2011,39(3):395-400.
[14]李娜,叶闵.基于MIKE21的三峡库区涪陵段排污口COD扩散特征模拟及对下游水质的影响[J].华北水利水电学院学报,2011,32(1):128-131.
[15]白洪炉.黄河三角洲地区水质污染物输移规律数值模拟研究[D].郑州:华北水利水电大学,2014
[2] Xiaokang Xin,Wei Yin,Meng Wang.Reservoir operation schemes for water pollution accidents in Yangtze River[J].Water Science and Engineering,2012,5(1):59-66.
[3] Shenggang Shi,Jingcan Cao,Li Feng,et al.Construction of a technique plan repository and evaluation system based on AHP group decision-making for emergency treatment and disposal in chemical pollution accidents[J].Journal of Hazardous Materials,2014,276:200-206.
[4]李如忠,洪天求,金菊良.河流水质模糊风险评价模型研究[J].武汉理工大学学报,2007,29(2):43-46.
[5]李林子,钱瑜,张玉超.基于EFDC和WASP模型的突发水污染事故影响的预测预警[J].长江流域资源与环境,2011,20(8):1010-1016.
[6]石剑荣.水体扩散衍生公式在环境风险评价中的应用[J].水科学进展,2005,16(1):92-102.
[7] MEI P K,LEE J Y.Emergency response after 9/11:the potential of real-time 3DGIS for quick emergency response in micro-spatial environments[J].Comput Environ and urban Systems,2005,29(2):93-113.
[8]窦明,李重荣,王陶.汉江水质预警系统研究[J].人民长江,2002,33(11):38-42.
[9]郑文波,侯国祥,徐学军,等.应用MO的汉江水污染控制信息系统的开发[J].华中科技大学学报:自然科学版,2003,31(3):75-77.
[10]侯国祥,林坤泉,张豫,等.汉江水污染控制信息系统GIS数据库的设计[J].环境科学与技术,2005,28(2):41-42.
[11]杨洁,毕军,周鲸波,等.长江(江苏段)沿江开发环境风险监控预警系统[J].长江流域资源与环境,2006,25(6):745-750.
[12]陶亚,任华堂,夏建新.河流突发污染事故下游城市应急响应时间预测——以淮河淮南段为例[J].应用基础与工程科学学报,2012,20(z1):77-86.
[13]匡翠萍,邓凌,刘曙光等.应急调水对太湖北部污染物扩散的影响[J].同济大学学报:自然科学版,2011,39(3):395-400.
[14]李娜,叶闵.基于MIKE21的三峡库区涪陵段排污口COD扩散特征模拟及对下游水质的影响[J].华北水利水电学院学报,2011,32(1):128-131.
[15]白洪炉.黄河三角洲地区水质污染物输移规律数值模拟研究[D].郑州:华北水利水电大学,2014