摘要
降雨的时空分布对于整个水文过程起着至关重要的作用。降雨喷淋控制系统作为包气带土壤水分运移规律水文物理模拟试验平台的重要组成部分,为模型试验提供模拟降雨。该试验利用降雨喷淋控制系统在不同阀门开度和喷头组合条件下产生了7组不同的模拟降雨,并对降雨强度的时空分布进行实际测定与计算。结果证明,降雨喷淋控制系统所生成的模拟降雨是符合试验的精度要求,并且得到系统可控雨强范围内的配比结果。该结果可用于指导今后的水文模拟过程中特定雨强范围内的降雨方案选择。
The spatial and temporal distribution of precipitation,as an input item,is of great importance to hydrological simulation.Hense the rainfall control in the experiment is also important.Rainfall sprinkler system is an important component of hydrological physical experiment platform which can be used for unsaturated soil moisture transmission research.It provides artificial rainfall needed in experiment.By determining and calculating the 7 groups of rainfall generated under the conditions of various combination of valve opening and the nozzle,the reliability of the system was proved and we can finally get a result of ratio control for a variety of rainfall intensity,which can be used as alternative solution in hydrological simulation.
出处
《实验室研究与探索》
CAS
北大核心
2010年第9期4-7,共4页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(50879017)
“十一五”国家科技支撑计划项目(2008BAB29B08-02)
河海大学水文水资源与水利工程科学国家重点实验室开放基金资助项目(2007490811)
关键词
水文物理
试验平台
降雨喷淋系统
降雨强度配比控制
土壤水分转移
hydrological physical
experiment platform
rainfall sprinkler system
ratio control of rainfall intensity
soil moisture transmission
