水土保持模型试验中产沙量测量方法研究  

Study on Methods of Sediment Yield Measurement in Model Tests of Soil and Water Conservation

作　　者：徐向舟[1] 张红武[2] 张立[3] 李子敏[2] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024 [2]清华大学水利水电工程系,北京100084 [3]华北水利水电学院继续教育学院,河南郑州450011

出　　处：《中国水土保持》2007年第1期35-37,共3页Soil and Water Conservation in China

基　　金：国家自然科学基金项目(40201008;50339020)

摘　　要：介绍了测量模型次降雨侵蚀产沙量的烘干法和密度瓶法,并通过不同粒径组泥沙浑水含沙量的对比试验,验证了测量方法的可靠性。针对模型土壤中夹杂着大量粒径较粗的泥沙颗粒的试验,提出进行泥沙粗细分层,然后采用烘干法和密度瓶法相结合的方法来测量次降雨侵蚀产沙量。所介绍的观测方法具有结果可靠且工作效率较高的特点。The paper introduces the methods of drying and pycnometer for sediment yield of total precipitation erosion of observation model and validates the reliability of the measurement through check tests of sediment concentration with different particle sizes. It puts forward to differentiate the coarse and fine sand and then measure the sediment yield of total precipitation erosion by using the combined method of drying and pycnometer in the light of the soil mixed with large quantity of coarser sand in the model tests. The introduced method has the characteristics of reliable result and higher working efficiency.

关 键 词：土壤侵蚀 模型试验 产沙量 测量 

分 类 号：S157[农业科学—土壤学]