粘性土坡面细沟流的水力特性试验研究  

Experimental Study on Hydraulic Characteristics of Rill Flows over Clay Soil Slope

作　　者：沙际德[1] 白清俊[2] 

机构地区：[1]西北农林科技大学,陕西杨陵712100 [2]山东农业大学,山东泰安市271018

出　　处：《泥沙研究》2001年第6期39-44,共6页Journal of Sediment Research

摘　　要：发生于粘性土坡细沟侵蚀中的细沟流 ,其特性多从地理角度进行描述 ,因而对细沟的认识也不一致。本文在室内试验的基础上 ,对细沟流的水力特性从最小耗能原理及水力学的角度进行了较为深入的探讨 ,不仅对细沟侵蚀过程中的“跌坑”现象的形成进行了分析 ,也得出了有别于明渠水流的细沟流的一些水力特性。The characteristics of rill flows occurred over clay soil slope were often described from the point of geography. Based on indoor experiments, the paper discussed the characteristics of rill flows from the point of minimum energy dissipation and hydraulics. Not only were the “drop pit” phenomena which occurred during the rill erosion analyzed, but also the differences in the hydraulic characteristics between rill flows and open channel flows were pointed out.

关 键 词：细沟流 跌坑 最小耗能 水力特性 粘性土坡面 侵蚀 水土流失 

分 类 号：S157[农业科学—土壤学]