CAJ | 학술논문

地表水-地下水具有复杂的相互转换关系,但是相关的地表水-地下水耦合模拟模型应用较少.本文通过分析GSFLOW模型的结构、原理及计算过程等,应用GSFLOW模型对干旱区进行地表水-地下水耦合模拟.根据开都河地区的现有资料,利用 GSFLOW模型构建了研究区地表水-地下水耦合模型,并利用2000—2005年两个径流测站数据、地下水观测井数据和博斯腾湖水位数据与模型模拟结果进行比较分析.研究结果表明,模型各个径流测站径流量的Nash模型确定性系数在0.67以上,观测井绝对平均误差约1.2 m,开都河东支模拟出流量和博斯腾湖水位变化的趋势相近,取得较好的模拟精度.GSFLOW模型可以较为真实反应出地表水-地下水相互作用的影响及河流径流量的变化,可以作为类似干旱区地表水-地下水相互作用的评估工具,并应用于实际地表水-地下水资源的统一管理.
지표수-지하수구유복잡적상호전환관계,단시상관적지표수-지하수우합모의모형응용교소.본문통과분석GSFLOW모형적결구、원리급계산과정등,응용GSFLOW모형대간한구진행지표수-지하수우합모의.근거개도하지구적현유자료,이용 GSFLOW모형구건료연구구지표수-지하수우합모형,병이용2000—2005년량개경류측참수거、지하수관측정수거화박사등호수위수거여모형모의결과진행비교분석.연구결과표명,모형각개경류측참경류량적Nash모형학정성계수재0.67이상,관측정절대평균오차약1.2 m,개도하동지모의출류량화박사등호수위변화적추세상근,취득교호적모의정도.GSFLOW모형가이교위진실반응출지표수-지하수상호작용적영향급하류경류량적변화,가이작위유사간한구지표수-지하수상호작용적평고공구,병응용우실제지표수-지하수자원적통일관리.
Due to the complexity of the groundwater-surface water interaction,the coupled surface water and groundwater flow simulation model is seldom used in arid watersheds.This paper reviews the several existing methods for coupling the surface water and groundwater simulations.Then this paper introduces the GSFLOW model in terms of its structure,principle and calculation process and uses it for modeling the interaction between the surface water and groundwater in an arid watershed.According to the existing data and conditions in the Kaidu River basin,the coupled surface water and groundwater flow model is constructed using GSFLOW and GIS tools.Also,the model is calibrated and validated by using the observation data of runoff,groundwater and surface water levels of Bositeng Lake from 2000 to 2005.The results show that the Nash coefficient for runoff simulations is over 0.67,the absolute averaged error between the observed and simulated groundwater level is about 1.2 m,and the trend of the water level of Bositeng Lake is in agreement with the runoff of Kaidu River,indicating that the model achieves satisfying simulation accuracy.This paper shows that the GSFLOW model is a helpful tool for assessing the groundwater-surface water interaction and can be used for integrated management of surface water and groundwater resources in arid watersheds.