南京大学学报(自然科学版)
南京大學學報(自然科學版)
남경대학학보(자연과학판)
JOURNAL OF NANJING UNIVERSITY(NATURAL SCIENCES)
2015年
3期
596-603
,共8页
张浩佳%吴剑锋%林锦%吴鸣%吴吉春
張浩佳%吳劍鋒%林錦%吳鳴%吳吉春
장호가%오검봉%림금%오명%오길춘
地表水%地下水%耦合模拟%GSFLOW
地錶水%地下水%耦閤模擬%GSFLOW
지표수%지하수%우합모의%GSFLOW
surface water%groundwater%coupled modeling%GSFLOW
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.
地錶水-地下水具有複雜的相互轉換關繫,但是相關的地錶水-地下水耦閤模擬模型應用較少.本文通過分析GSFLOW模型的結構、原理及計算過程等,應用GSFLOW模型對榦旱區進行地錶水-地下水耦閤模擬.根據開都河地區的現有資料,利用 GSFLOW模型構建瞭研究區地錶水-地下水耦閤模型,併利用2000—2005年兩箇徑流測站數據、地下水觀測井數據和博斯騰湖水位數據與模型模擬結果進行比較分析.研究結果錶明,模型各箇徑流測站徑流量的Nash模型確定性繫數在0.67以上,觀測井絕對平均誤差約1.2 m,開都河東支模擬齣流量和博斯騰湖水位變化的趨勢相近,取得較好的模擬精度.GSFLOW模型可以較為真實反應齣地錶水-地下水相互作用的影響及河流徑流量的變化,可以作為類似榦旱區地錶水-地下水相互作用的評估工具,併應用于實際地錶水-地下水資源的統一管理.
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.