“引江济太”调水中望虞河水质变化的规律.pdfVIP

第29卷第2期 水摇 资摇 源摇 保摇 护 2013年3月 Vol.29 No.2 WATER RESOURCES PROTECTION Mar. 2013 DOI:10.3969/ j.issn.1004 6933.2013.02.011 “引江济太冶调水中望虞河水质变化的规律 张摇 又,刘摇 凌,姚秀岚,麻摇 林,赵摇 溦 (河海大学水文水资源与水利工程科学国家重点实验室,江苏 南京摇 210098) 摘要:将水质划分为11个级别状态,用改进的Zadeh公式对水质指标进行规格化,构造水质变化的 概率转移矩阵,并编写MATLAB程序计算望虞河调水区及望虞河各监测断面的水质变化进步度。 结果表明,“引江济太冶调水后,望虞河水质1—6 月总的改善程度为0郾0372;由各断面的水质变化 进步度可知,望虞河江边闸下断面处的水质改善明显,虞义大桥水质呈恶化趋势,从张桥断面以后 水质改善程度逐渐增大;总体来讲,调水对望虞河水质的改善有明显影响,但望虞河西岸的重度污 染区严重阻碍望虞河水质的改善。 关键词:水质;进步度;调水;引江济太;马尔科夫模型;Zadeh公式;望虞河 中图分类号:X824摇 摇 摇 文献标志码:A摇 摇 摇 文章编号:1004 6933(2013)02 0053 05 Variation of water quality of Wangyu River during water diversion from Yangtze River to Taihu Lake ZHANG You,LIU Ling,YAO Xiulan,MA Lin,ZHAO Wei (Sate Key Laboratory of Hydrology鄄Water Resources and Hydraulic Engineering, Hohai University,Nanjing 210098,China) Abstract:The water quality was classified into 11levels. The improved Zadeh formula was used to normalize the water quality indicators. Theprobabilitytransitionmatrix ofwaterquality changeswasconstructed,andaMATLAB program waswritten to calculate the degree of progress of water quality changes of the river as well as that of five monitoring sections. The resultsshow thatthetotal degreeof improvement of thewater quality intheWangyu River from January to Junewas0郾0372,indicatingthat thewater quality of theWangyu River improved significantly. As seen fromthedegreeof improvementofwaterquality atallsections,thewaterqualityintheJiangbianzhaxiaSection had visibly improved,while the water quality near the Yuyi Bridge showed a deteriorating trend. In the lower reaches of the Zhang Bridge Section, the degree of improvement of water quality increased gradually. O