水文
水文
수문
HYDROLOGY
2015年
4期
67-71
,共5页
下垫面%新安江-海河模型%洪水量级%模拟%影响
下墊麵%新安江-海河模型%洪水量級%模擬%影響
하점면%신안강-해하모형%홍수량급%모의%영향
underlying surface%Xin'anjiang-Haihe model%flood magnitude%simulation%influence
由于人类活动影响导致海河流域下垫面发生变化,造成流域产、汇流特性的变化。为掌握流域下垫面变化对洪水的影响情况,对后湾水库流域采用改进的新安江—海河模型进行分析、研究。结果表明,后湾流域下垫面发生变化的年代为1980年左右;改进的新安江—海河模型用于不同量级的洪水模拟,其效果较好;由于下垫面的变化,改进的新安江-海河模型的产、汇流参数1980年后比1980年前有增大趋势,并在相同降雨情况下,1980年后的洪量比1980年前呈减少的趋势,且洪水量级越小减少幅度越大。
由于人類活動影響導緻海河流域下墊麵髮生變化,造成流域產、彙流特性的變化。為掌握流域下墊麵變化對洪水的影響情況,對後灣水庫流域採用改進的新安江—海河模型進行分析、研究。結果錶明,後灣流域下墊麵髮生變化的年代為1980年左右;改進的新安江—海河模型用于不同量級的洪水模擬,其效果較好;由于下墊麵的變化,改進的新安江-海河模型的產、彙流參數1980年後比1980年前有增大趨勢,併在相同降雨情況下,1980年後的洪量比1980年前呈減少的趨勢,且洪水量級越小減少幅度越大。
유우인류활동영향도치해하류역하점면발생변화,조성류역산、회류특성적변화。위장악류역하점면변화대홍수적영향정황,대후만수고류역채용개진적신안강—해하모형진행분석、연구。결과표명,후만류역하점면발생변화적년대위1980년좌우;개진적신안강—해하모형용우불동량급적홍수모의,기효과교호;유우하점면적변화,개진적신안강-해하모형적산、회류삼수1980년후비1980년전유증대추세,병재상동강우정황하,1980년후적홍량비1980년전정감소적추세,차홍수량급월소감소폭도월대。
Because of the influence of human activities, the underlying surface of the Haihe River Basin has changed, which leads to the change of the runoff?characteristics. In this paper, to master the situation of the watershed underlying surface changes impact on the floods, we used the im-proved Xin'anjiang-Haihe model to study the Houwan Reservoir watershed. A great amount of historical data show that the Houwan Reservoir watershed underlying surface changes happened around 1980, the effect is?better when the improved Xin 'anjiang-Haihe model being applied in the flood simulations at different magnitudes. Because of changes of the underlying surface, comparing to the parameter before 1980, the runoff parameter of the improved Xin'anjiang-Haihe model after 1980?has a tendency to increase, and under the same rainfall condition, the flood vol-ume after 1980 shows a decreasing trend. What's more, the smaller the flood magnitude, the greater the flood volume decreases.