地下水位埋深对地表径流量及入渗补给量影响的数值模拟  

Influences on Surface Runoff and Infiltration Recharge under Different Groundwater Depths with Numerical Model

作　　者：杨瑞瑞[1,2] 陈喜[1,2] 张志才[1,2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水文水资源学院,江苏南京210098

出　　处：《水电能源科学》2013年第6期43-46,共4页Water Resources and Power

基　　金：国家自然科学基金资助重大项目(40930635);国家自然科学基金资助重点项目(51079038);国家自然科学基金资助项目(51190091)

摘　　要：针对五道沟实验站亚粘土(砂姜黑土)且无植被覆盖区内的蒸渗仪中的不同地下水位埋深之上的非饱和土层,建立了非饱和带数值模型,进而模拟出不同地下水位埋深时的地表径流量及入渗补给量变化规律。数值模拟结果表明,地表径流量及入渗补给量随降雨量增大而增大,地表径流系数总体随降雨量增大而增大,随地下水位埋深增加而减小;但对强降雨,地下水位埋深对地表径流系数影响较小。Aiming at the unsaturated loam（mortar black soil） soil above the groundwater depth which is no vegetation in the lysimeter at Wudaogou hydrologic experimental station of Anhui Province,a numerical model of unsaturated zone is establish to simulate the change laws of the surface runoff and infiltration recharge under different depths of underground water.The simulated results show that the average surface runoff and infiltration recharge tend to be increased with increase of the rainfall;the surface runoff coefficients tend to be increased with increase of the rainfall and tend to be decreased with the increase of the groundwater depth;when the rainfall intensity is large,the groundwater depth has almost no influence on the surface runoff coefficients.

关 键 词：亚粘土 地下水位埋深 地表径流量 入渗补给量 

分 类 号：P334.92[天文地球—水文科学]