摘要
针对水环境容量受水文条件影响的特征,本文以颍河(郑州段)为例,采用一维水环境容量模型探讨了3种不同设计水文条件下水环境容量的差异.结果表明:分水期设计条件较常规方法(多年平均流量)计算的COD和氨氮容量分别增加了7.15%和9.75%;月平均流量设计条件较常规方法计算的COD和氨氮容量分别增加了4.89%和6.35%;分水期与月平均流量设计条件水环境容量接近,COD和氨氮容量仅分别增加了2.14%和3.20%.比较3种设计水文条件下水环境容量的大小,发现在考虑河道动态特性的设计水文条件下计算的水环境容量更能真实有效地反映河流水环境容量的实际变化规律,从而实现水环境容量的总量分配和季节性利用.
According to the characteristics that water environmental capacity is affected by hydrological conditions,taking Yinghe river(Zhengzhou section)as an example,the differences of water environmental capacity under three different design hydrological conditions are studied by using one-dimensional water environmental capacity model.The results show that compared with the conventional method(multi-year average flow),the design conditions of the water diversion period increase the COD and ammonia nitrogen capacity by 7.15%and 9.75%respectively.The monthly average flow design conditions increase by 4.89%and 6.35%respectively compared with the COD and ammonia nitrogen capacity calculated by the conventional method.The water environmental capacity of the water diversion period is close to that of the monthly average flow design condition,and the COD and ammonia nitrogen capacity increase by only 2.14%and 3.20%,respectively.By comparing the size of the water environmental capacity under the three design hydrological conditions,it shows that the calculated water environmental capacity under the designed hydrological conditions considering the dynamic characteristics of the river can more truly and effectively reflect the actual change law of the river water environmental capacity,so as to realize the total distribution and seasonal utilization of the water environmental capacity.
作者
焦丽宏
向龙
穆小玲
樊洪波
JIAO Lihong;XIANG Long;MU Xiaoling;FAN Hongbo(College of Hydrology&Water Resources,Hohai Univ.,Nanjing 210098,China;Zhengzhou Hydrology&Water Resources Survey Bureau,Zhengzhou 450007,China)
出处
《三峡大学学报（自然科学版）》
CAS
北大核心
2020年第3期19-22,共4页
Journal of China Three Gorges University：Natural Sciences
基金
河南省水文科研项目(GG201840)
国家自然科学基金项目(51309078,41101016)
中央高校基本科研业务费专项资金资助(2019B10914)。
关键词
水环境容量
设计水文条件
分期
动态
颍河
water environmental capacity
hydrological conditions
stage design condition
dynamic
Yinghe river
