地下水-地表水耦合模拟中下垫面影响初探

本文针对下垫面对地表径流形成与运动的影响进行分析,通过洼地储水量和消减储水量的概念对下垫面的影响进行评价,将下垫面的影响以地表孔隙度的形式表现在地表径流运动方程中,并推导出洼地储水高度和消减储水高度与地表孔隙度和径流深度的关系式,且对参数的获取进行了探讨,最后对大、小凌河扇地的下垫面条件进行了分析与评价.

Discussion on Influence of Underlying Surface on Groundwater-Surface Water Coupled Numerical Simulation

The formation and movement of the surface runoff are influenced by many factors. This paper analyzed and evaluated the impact of the underlying surface.The influence of the underlying surface on surface flow can be evaluated by two conceptionrill storage and storage exclusion,and the influence of the underlying was represented in the runoff motion equation in the form of surface porosity.And then the relation among the rill storage height,storage exclusion height and surface porosity,volumetric height was derived,and the acquisition approach of rill storage height and storage exclusion height was discussed. At last, the underlying surface conditions of the Dalinghe and Xiaolinghe rivers.