坡面径流量与含沙量动态测量系统  

System for Dynamic Measurements of Hillslope Runoff Rate and Sediment Concentration

作　　者：王辉[1] 雷廷武[2] 赵军[3] 刘清坤[4] 

机构地区：[1]西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室 [2]中国农业大学水利与土木工程学院 [3]中科院水利部水土保持研究所 [4]上海交通大学自动检测研究所

出　　处：《农业机械学报》2005年第1期79-82,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金 (项目编号 :40 1710 62 );中国科学院引进国外杰出人才基金共同资助项目 (项目编号 :982 60 2 )

摘　　要：设计了一套测量坡面径流含沙量与径流量的动态测量系统 ,利用γ射线穿过不同介质后强度衰减不同的规律来测量含沙量 ,通过检测径流注入给定容器时液位由下检测点到达上检测点的时间来测定流量。实际应用结果表明 ,系统工作稳定 ,操作方便 ,省工省时 ,测量结果准确。系统不仅适合于室内土壤侵蚀试验中含沙量与径流量的测量 。A system for dynamic measurements of hillslope runoff rate and sediment concentration was designed and developed. The sediment concentration is determined with γ rays attenuated by the sediments, while the runoff rate is quantified by the time interval for the water to move from the lower water level sensor to the upper one, in a given container. Laboratory experiments indicated that the system is stable, reliable, convenient to operate, and lower labour and time demands, with high measurement accuracy. The system can be used not only in laboratory soil erosion studies, but also in field monitoring of runoff and sediment yield from runoff plots, as well as other researches, for runoff rate and sediment concentration determinations.

关 键 词：坡面径流 坡面土壤侵蚀 含沙量 操作方便 径流量 利用 试验 稳定 小区 

分 类 号：S157[农业科学—土壤学]