摘要
为推求降雨过程中盲沟内流量及水深变化过程,以指导盲沟系统的设计与布置,在研究土壤非饱和下渗和碎石中水流运动规律的基础上,建立了城市快速路盲沟系统水力模型,包括雨水下渗和盲沟汇流两部分。前者采用vanGenuchten模型表征土壤水分持留曲线,借助非饱和渗流模拟软件VS2DTI求解;后者采用碎石中水流运动方程,通过Preissmann格式差分求解。
To work out variation regularitiesof flow and water depth in blind ditchesduring raining time,hydraulic modelsfor blind drainage system of urban expressway are established for the design and layout of blind drainage system based on researcheson non-saturated permeating of soil and moving regularitiesof flow in crushed stones.The modelsinclude rainwater permeating part and blind drainage convergence part.The former showssoil water retaining curveswith van Genuchten model and solvesproblemsvia non-saturated permeating simulated software VS2DTI;while the latter findsfinite difference solutionswith Preissmann pattern based on flow moving-in-crushed stonesequations.
出处
《中国市政工程》
2003年第6期47-49,共3页
China Municipal Engineering
基金
上海市科委科技攻关项目(012112029)
