三峡工程运行前后长江中游河段水质变化模拟

doi:10.16232/j.cnki.1001-4179.2018.22.010

摘要/Abstract

摘要： 三峡工程运行后在枯水期增加了下泄流量，提高了长江中下游河段枯水期沿程水位与平均流量，改变了中下游河段污染物排放的水动力扩散特性，进而对河道的水质产生了一定的影响。以三峡工程运行前后武汉河段汉口站水位和流量变化为例，分析其在枯水期、汛期和蓄水期3个典型时段的水文情势变化特征，采用数值模拟方法研究河道排污口附近主要污染物指标（COD和NH3-N）的扩散特性和响应变化规律，并进一步总结分析水位和流量变化对长江中下游沿江城市排污口附近水质特征变化的影响。结果表明：三峡工程运行后，由于流量年内分布趋于均匀化，各个不同时期的污染物扩散范围总体呈现减小趋势。

关键词: 污染物扩散, 枯水位, 水质模型, 长江中下游, 三峡工程

Abstract: The increased discharge flow after operation of Three Gorges Project increases the water level and average flow during dry season, changes the hydrodynamic diffusion characteristics of pollutant discharge and influences the water quality conditions to some extent in the middle and lower reaches of the Yangtze River. This paper takes the change of water level and flow rate in Wuhan section as an example to analyze the hydrological conditions in dry season, flood season and water storage period before and after Three Gorges Project′s operation and simulates the diffusion characteristics and variation of COD and NH3-N near the sewage outlets. We further analyzes the effects of change of water level and flow rate on the water quality characteristics near the sewage outlets along the middle and lower reaches of the Yangtze River. The results showed that after operation of Three Gorges Project, due to the inter-annual flow process flattening, the range of pollution diffusion in different periods showed a decreasing trend as a whole.

Key words: pollutants diffusion, dry water level, water quality model, middle and lower reaches of Yangtze River, Three Gorges Project

李林娟,邓鹏鑫. 三峡工程运行前后长江中游河段水质变化模拟[J]. 人民长江, doi: 10.16232/j.cnki.1001-4179.2018.22.010.

LI Linjuan, DENG Pengxin. Simulation of water quality variation in middle reaches of Yangtze River before and after operation of Three Gorges Project[J]. , doi: 10.16232/j.cnki.1001-4179.2018.22.010.

[1]	王丹阳汤显强丁惠君李艳红李志威. 长江中下游圩垸水环境现状、成因和治理[J]. 人民长江, 2023, 54(6): 19-26.
[2]	孙波扬李发鹏边得会. 三峡工程水生态空间管控指标体系构建[J]. 人民长江, 2023, 54(6): 47-53.
[3]	沙红良;陆德中;付康;李树明;. 融合无人机LiDAR与摄影测量的河道地形测绘方法[J]. 人民长江, 2023, 54(4): 157-162.
[4]	吴琼;张莉;曾雅立;等.. 长江中下游河段低枯水水位流量关系变化规律分析[J]. 人民长江, 2023, 54(2): 55-62.
[5]	张运林;张毅博;周永强;徐轩;施坤;. 生态文明建设以来长江中下游湖泊水生态环境变化[J]. 人民长江, 2023, 54(1): 14-23.
[6]	李强;王乃茹;曹双;陈槐;罗红雨;范红霞. 长江中下游岸滩稳定性评价指标体系构建及应用[J]. 人民长江, 2022, 53(8): 1-8.
[7]	戴明龙;王立海;李立平;李妍清;. 2020年长江螺山站水位流量关系分析[J]. 人民长江, 2022, 53(5): 118-122.
[8]	许斌;邹磊;姚立强;欧阳硕. 长江中下游径流情势演变及其归因分析[J]. 人民长江, 2022, 53(4): 91-97.
[9]	李娜;郭生练;王俊;熊丰. 长江中下游梅雨与三峡水库入库洪水遭遇规律分析[J]. 人民长江, 2022, 53(3): 44-49.
[10]	王权森. 长江中下游行蓄洪空间数字孪生建设方案构想[J]. 人民长江, 2022, 53(2): 182-188.
[11]	胡春燕;路彩霞;侯卫国. 长江中下游干流河道治理回顾与展望[J]. 人民长江, 2022, 53(2): 7-11.
[12]	闫金波;牛兰花;. 长江宜昌站同流量枯水位变化阶段特征及作用机制[J]. 人民长江, 2022, 53(12): 75-74.
[13]	王彧蓉,周建中,杨鑫,方威. 再分析降水资料的适用性评估与偏差校正——以长江中下游地区为例[J]. 人民长江, 2021, 52(9): 93-100.
[14]	尹志，郭含，吕宜卫，章广越. 三峡工程运行后武汉河段河槽形态变化特性研究[J]. 人民长江, 2021, 52(7): 1-8.
[15]	林芬芬,夏军强,周美蓉,邓珊珊. 边界条件对荆江监利河段枯水河槽形态调整的影响[J]. 人民长江, 2021, 52(3): 1-8.

三峡工程运行前后长江中游河段水质变化模拟

Simulation of water quality variation in middle reaches of Yangtze River before and after operation of Three Gorges Project

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价