CAJ | 학술논문

耦合概念性水资源评价与规划模型WEAP和分布式地下水模型MODFLOW,建立需求驱动的黑河流域中下游全境地表-地下水耦合模型,并利用地表水文站点和地下水观测点数据进行模型率定.结果表明,率定期和验证期地表水模拟的纳氏系数>0.7,地下水位模拟的均方根残差<0.80m.应用模型对流域历史水循环反演模拟表明,黑河干流(黑河东枝)2002~2012年水量统一调度使正义峡年均来流较原管理方式增加1.63亿m3(约18%);讨赖河(黑河西枝)因人类活动改变了西部子水系河流水文情势,基本切断了与黑河干流下游尾闾水系的水力联系;黑河东西两枝人类活动和出山口径流变化共同影响着下游狼心山断面径流量,直接导致了居延海之前消失和现在的恢复.
우합개념성수자원평개여규화모형WEAP화분포식지하수모형MODFLOW,건립수구구동적흑하류역중하유전경지표-지하수우합모형,병이용지표수문참점화지하수관측점수거진행모형솔정.결과표명,솔정기화험증기지표수모의적납씨계수>0.7,지하수위모의적균방근잔차<0.80m.응용모형대류역역사수순배반연모의표명,흑하간류(흑하동지)2002~2012년수량통일조도사정의협년균래류교원관리방식증가1.63억m3(약18%);토뢰하(흑하서지)인인류활동개변료서부자수계하류수문정세,기본절단료여흑하간류하유미려수계적수력련계;흑하동서량지인류활동화출산구경류변화공동영향착하유랑심산단면경류량,직접도치료거연해지전소실화현재적회복.
By coupling the conceptual water resources planning model WEAP and distributed groundwater model MODFLOW, the demand-based surface-groundwater model across the whole middle-down Heihe River Basin is developed. The hydrology gauge data and groundwater monitoring data are used for calibration and verification. For both the calibration and verification periods, the Nash-Sutcliffe Efficiency Coefficients (NSE) for surface water are above 0.7, and the Root Mean Square Errors (RMSE) for groundwater table are less than 0.80m. The modelling results show that the unified water resources management and operation in the mainstream (Eastern Heihe Basin) from 2002 to 2012 have increased the released water for downstream by 163million m3 (18%) annually. The human activities in the Taolai River (Western Heihe Basin) changed the river flow regime of the tributary, and blocked its hydraulic connections with downstream Heihe drainage. For both the east and west of Heihe River, the changes of discharges from the mountain and human activities contribute to the reduction of runoff through Langxinshan Gauge, downstream, which directly caused the disappearance times ago and recent restoration of the downstream Juyan Lake.