摆喷式人工降雨机的特性试验  

The Experiment on Properties of Rainfall-Simulator of Swayed Sprinkler

作　　者：吴长文 徐宁娟[1] 

机构地区：[1]南昌水利高等专科学校,南昌大学

出　　处：《南昌大学学报（工科版）》1995年第1期58-66,共9页Journal of Nanchang University(Engineering & Technology)

摘　　要：在试验率定的基础上，对摆喷式人工模拟降雨的试验特性进行了研究。该机的原始技术结构取自于奥地利维也纳农业大学，原装置仅适于平缓农地，经改装后可用于陡玻坡面流及坡面侵蚀研究。经率定，该机在一定的雨强范围内均匀度可达８０％以上，且模拟降雨试验表明，其径流泥沙过程与作者导出的坡面流及侵蚀的理论模型是吻合的。该机喷嘴喷出的水股具有一定的初速。利用力学原理，还得出了在有初速条件下雨滴在有限高度下降的终点速度公式。该机拆装亦较方便，但雨强范围较窄，不适于进行连续变雨强试验。his paper studied the experimental characteristics of rainfall slmulator ofswayed sprinkler type based on experimental calibration and erosion experiment,The originaltechnical structure of the simuiator came from Vienna Agricultural University(Austria)which is only suited to gentle slope farmland,and after authors' modification it can be used tostudy overland flow and erosion over steep hillslope. Its uniformity of intensity of rainfall islarger than 80%within the limitation of appropriate intensity of rainfall, but the limitationof intensity of rainfall is narrower. It is not suited to the experiment of changing intensity ofrainfall.The theoretical formula of final velocity of raindrop through limited height has also beenderived when the initial velocity of raindrop is not zero.

关 键 词：人工降雨 土壤侵蚀 模拟降雨 喷灌 

分 类 号：S275.5[农业科学—农业水土工程]