鄂北调水工程对汉江中下游水文情势的影响

发布时间：2018-02-03 13:59

本文关键词： 调水工程流量水位流速 MIKE模型　出处：《中国农村水利水电》2017年04期 　论文类型：期刊论文

【摘要】：为了弄清鄂北调水工程实施对汉江中下游干流水文情势的影响,设置了3种情景(S1、S2、S3)运用MIKE模型模拟水文情势,并对其进行对比分析。结果表明,S3情景下汉江中下游各断面年平均流量、水位、流速相对S2情景下的均呈微弱降低趋势,沿程各断面年均流量减幅在5%以内,总体上丹江口水库清泉沟增加引水后对汉江中下游流量、水位和流速的影响微弱;S3情景下汉江中下游各断面年平均流量、水位、流速相对S1情景下的降幅较大,平水年最大降幅分别为47.7%、14.9%、77.2%,沿程各断面流量降幅不均。表明各支流的汇入对干流流量的影响较大,已规划的调水工程和梯级开发对汉江中下游的水文情势影响较大,而鄂北调水工程对其影响较小。
[Abstract]:In order to find out the influence of the water transfer project in north Hubei on the hydrological situation of the middle and lower reaches of the Hanjiang River, three scenarios were set up to simulate the hydrological situation by using the MIKE model. The results show that the average annual discharge, water level and velocity of each section in the middle and lower reaches of the Hanjiang River under the S3 scenario have a weak decreasing trend compared with the S2 scenario. The average annual flow rate of each section is less than 5%, and the influence of Qingquan ditch of Danjiangkou Reservoir on the flow, water level and velocity of the middle and lower reaches of the Hanjiang River is weak after the increase of the diversion of water in the upper and lower reaches of the Hanjiang River. Under the S3 scenario, the annual average discharge, water level and velocity of each cross section in the middle and lower reaches of the Hanjiang River are lower than those in the S1 scenario, and the largest decrease in the average annual flow rate is 47.714. 9%. It shows that the confluence of the tributaries has a great influence on the flow of the main stream, and the planned water transfer projects and cascade development have a great impact on the hydrological situation of the middle and lower reaches of the Hanjiang River. The water transfer project in northern Hubei has little effect on it.
【作者单位】：长江水资源保护科学研究所;
【基金】：国家自然科学基金项目(51409191)
【分类号】：TV12;TV68
【正文快照】： 0引言汉江是长江中游最大的支流,干流全长1 577 km,全流域面积15.9万km2,多年平均径流量566亿m3。丹江口以上为上游,长约925 km,流域面积9.52万km2;丹江口以下为中下游,长约652 km,流域面积6.38万km2[1]。近期,为了解决湖北省鄂北地区资源型缺水问题,2015年7月,国家发改委批复

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