垂向非均质含水层退水规律及水文地质参数推求方法
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摘要
河川径流退水过程受流域特征及含水层水文地质特性控制,通过径流退水过程分析可以推求流域水文地质参数。本文考虑饱和渗透系数垂向的非均质性,利用Rupp和Selker(2005)提出的快速退水、慢速退水方程的解析解,结合退水速率与流量的关系,推求东江星丰流域水文地质参数,分析了流域饱和渗透系数垂向幂函数变化对水文地质参数推求结果的影响。研究表明,垂向非均质性对含水层参数影响显著,随着饱和渗透系数垂向非均质性的增加,推求的水文地质参数(表层与垂向平均饱和渗透系数,给水度)数值增大。
The recession process of streamflow is controlled by the basin hydrogeological characteristics.The hydrogeological parameters can be estimated by analyzing the runoff recession process.Through the analytical solution of quick and slow recession flow equations considering an aquifer with a power law saturated hydraulic conductivity profile proposed by Rupp and Selker(2005),the influence of the saturated hydraulic conductivity's vertical-heterogeneity is analyzed by using the groundwater recession data from Xingfeng basin in Dongjiang.The study illustrates that there is the great influence of vertical-heterogeneity.It is found that as the increasing of the saturated hydraulic conductivity variation with depth,the hydrogeological parameters(upper and average saturated hydraulic conductivity,specific yield) increase.
The recession process of streamflow is controlled by the basin hydrogeological characteristics.The hydrogeological parameters can be estimated by analyzing the runoff recession process.Through the analytical solution of quick and slow recession flow equations considering an aquifer with a power law saturated hydraulic conductivity profile proposed by Rupp and Selker(2005),the influence of the saturated hydraulic conductivity's vertical-heterogeneity is analyzed by using the groundwater recession data from Xingfeng basin in Dongjiang.The study illustrates that there is the great influence of vertical-heterogeneity.It is found that as the increasing of the saturated hydraulic conductivity variation with depth,the hydrogeological parameters(upper and average saturated hydraulic conductivity,specific yield) increase.
引文
[1]Brutsaert W,Nieber J L.Regionalized drought flow hydrographs from a mature glaciated plateau[J].Water Resources Research,1977,3(3):637～643.
[2]Szilagyi J,Parlange M B,Albertson J D.Recession flow analysis for aquifer parameter determination[J].Water Resources Research,1998,34(7):1851～1857.
[3]Brutsaert W,Lopez J P.Basin-scale geohydrologic drought flow features of riparian aquifers in the southern Great Plains[J].Water Resources Research,1998,34(2):233～240.
[4]Zhang Lu,Chen Y D,Hickel K,Shao Q.Analysis of low-flow characteristics for catchments in Dongjiang Basin,China[J].Hydrogeology Journal,2009,17:631-640.
[5]张艳芳,陈喜,程勤波,张志才,周焱钰.基于流量衰减过程的岩溶地区水文地质参数推求方法[J].水电能源科学,2010,28(11):55～57.
[6]Mendoza G F,Steenhuis T S,Walter M T,Parlange J Y.Estimating basin-wide hydraulic parameters of a semi-arid mountainous watershed by recession-flow analysis[J].Journal of Hydrology,2003,279:57～69.
[7]Troch P A,De Troch F P.Effective water table depth to describe initial conditions prior to storm rainfall in humid regions[J].Water Resources Research,1993,29(2):427～434.
[8]Brutsaert W.The unit response of groundwater outflow from ahillslope[J].Water Resources Research,1994,30(10):2759～2763.
[9]Szilagyi J,Gribovszki Z,Kalicz P.Estimation of catchment-scale evapotranspiration from baseflow recession data:Numerical model and practical application results[J].Journal of Hydrology,2007,336:206～217.
[10]Wang D,Cai X.Recession slope curve analysis under human interferences[J].Advances in Water Resources,2010,33:1053～1061.
[11]Wang D,Cai X.Detecting human interference to low flows through base flow recession analysis[J].Water Resource Research,2009,45,W07426,doi:10.1029/WR007819.
[12]Szilagyi J,Parlange M B.Baseflow separation based on analytical solution of the Boussinesq equation[J].Journal of Hydrology,1998,204:251～260.
[13]Rupp D E,Woods R A.Increased flexibility in base flow modeling using a power law transmissivity profile[J].Hydrological Processes,2008,22:2667～2671.
[14]Rupp D R,Selker J S.Drainage of a horizontal Boussinesq aquifer with a power law hydraulic conductivity profile[J].Water Resource Research,2005,41,W11422,doi:10.1029/2005WR004241.
[15]Rupp D E,Selker J S.Information,artifacts,and noise in dQ/dt-Q recession analysis[J].Advances in Water Resources,2006,29(2):154～160.
[16]U.S.Department of Agriculture,Natural Resources Conservation Service.National soil survey handbook,title430～VI,part618.50.http://www.mo10.nrcs.usda.gov/references/guides/properties/sathydcond.html.2012.08.10.
[17]Szilagyi J.Vadose zone influences on aquifer parameter estimations of saturated-zone hydraulic theory[J].Journal of Hydrology,2004,286:78～86.
[18]Hilberts A G J,Troch P A,Paniconi C.Storage-dependent drainable porosity for complex hillslopes[J].Water Resources Research,2005,41,W06001,doi:10.1029/2004WR003725.
[2]Szilagyi J,Parlange M B,Albertson J D.Recession flow analysis for aquifer parameter determination[J].Water Resources Research,1998,34(7):1851～1857.
[3]Brutsaert W,Lopez J P.Basin-scale geohydrologic drought flow features of riparian aquifers in the southern Great Plains[J].Water Resources Research,1998,34(2):233～240.
[4]Zhang Lu,Chen Y D,Hickel K,Shao Q.Analysis of low-flow characteristics for catchments in Dongjiang Basin,China[J].Hydrogeology Journal,2009,17:631-640.
[5]张艳芳,陈喜,程勤波,张志才,周焱钰.基于流量衰减过程的岩溶地区水文地质参数推求方法[J].水电能源科学,2010,28(11):55～57.
[6]Mendoza G F,Steenhuis T S,Walter M T,Parlange J Y.Estimating basin-wide hydraulic parameters of a semi-arid mountainous watershed by recession-flow analysis[J].Journal of Hydrology,2003,279:57～69.
[7]Troch P A,De Troch F P.Effective water table depth to describe initial conditions prior to storm rainfall in humid regions[J].Water Resources Research,1993,29(2):427～434.
[8]Brutsaert W.The unit response of groundwater outflow from ahillslope[J].Water Resources Research,1994,30(10):2759～2763.
[9]Szilagyi J,Gribovszki Z,Kalicz P.Estimation of catchment-scale evapotranspiration from baseflow recession data:Numerical model and practical application results[J].Journal of Hydrology,2007,336:206～217.
[10]Wang D,Cai X.Recession slope curve analysis under human interferences[J].Advances in Water Resources,2010,33:1053～1061.
[11]Wang D,Cai X.Detecting human interference to low flows through base flow recession analysis[J].Water Resource Research,2009,45,W07426,doi:10.1029/WR007819.
[12]Szilagyi J,Parlange M B.Baseflow separation based on analytical solution of the Boussinesq equation[J].Journal of Hydrology,1998,204:251～260.
[13]Rupp D E,Woods R A.Increased flexibility in base flow modeling using a power law transmissivity profile[J].Hydrological Processes,2008,22:2667～2671.
[14]Rupp D R,Selker J S.Drainage of a horizontal Boussinesq aquifer with a power law hydraulic conductivity profile[J].Water Resource Research,2005,41,W11422,doi:10.1029/2005WR004241.
[15]Rupp D E,Selker J S.Information,artifacts,and noise in dQ/dt-Q recession analysis[J].Advances in Water Resources,2006,29(2):154～160.
[16]U.S.Department of Agriculture,Natural Resources Conservation Service.National soil survey handbook,title430～VI,part618.50.http://www.mo10.nrcs.usda.gov/references/guides/properties/sathydcond.html.2012.08.10.
[17]Szilagyi J.Vadose zone influences on aquifer parameter estimations of saturated-zone hydraulic theory[J].Journal of Hydrology,2004,286:78～86.
[18]Hilberts A G J,Troch P A,Paniconi C.Storage-dependent drainable porosity for complex hillslopes[J].Water Resources Research,2005,41,W06001,doi:10.1029/2004WR003725.