调水引流改善平原河网水环境质量模拟  

Simulation on improvement of water environment in plain river network by water diversion

作　　者：许益新[1] 王文才[1] 曾伟峰[1] 李一平[1] 赖秋英 殷小海 章双双 

机构地区：[1]河海大学环境学院,江苏南京210098 [2]张家港市水资源监测站,江苏张家港215560 [3]苏州科技大学环境科学与工程学院,江苏苏州215011

出　　处：《水资源保护》2018年第1期70-75,82,共7页Water Resources Protection

基　　金：国家自然科学基金(51579061);2016年度江苏省普通高校专业学位研究生实践创新计划项目(SJZZ16_0089)

摘　　要：为科学定量地评估引调水工程对平原河网地区城市内河水质的改善效果,以张家港市中部水系为例,运用MIKE11构建了河网水动力水质耦合模型,模拟了沿江水利枢纽和内河节制闸不同的调度方式对城市内河水质的影响,利用水质浓度改善率探究了水利调度改善城市内河水质的程度。结果表明:增加沿江水利枢纽引水天数对改善城市内河水质有显著作用,但随着引水天数的增加,NH_3-N浓度改善率日均提升幅度逐渐降低;内河节制闸调度工况对改善城市内河水质起到一定的促进作用,实际调水引流工作中可作为一种辅助措施。In order to quantitatively evaluate the effect of the water diversion project on the water quality in the urban inland river of the plain river network,taking zhangjiagang central water system as an example,a water quality coupling model of river network was constructed using MIKE11 to simulate the effects of different scheduling methods on water quality of urban inland river,exploring the degree of water quality improvement under water diversion by means of concentration improvement rate. The results show that increasing the number of water diversion days along the river water conservancy project has a significant effect on improving the water quality of the inner river. But with the increase of water diversion days, the average daily improvement rate of NH_3-N concentration decreased gradually; the operation condition of inland river control sluice can promote the improvement of water quality in urban areas,and it can be an auxiliary measure in actual water diversion.

关 键 词：城市内河 河网模型 水利枢纽 内河节制闸 水利调度 浓度改善率 

分 类 号：X321[环境科学与工程—环境工程]