【摘要】 通过模拟降雨试验的方法,系统研究了细沟流流速与流量、水深与流量、流速与水深及阻力系数与雷诺数之间的关系,雨强与坡度对细沟流水力特性的影响,不同细沟流流型、流态及水动力要素作用下的侵蚀特点,并对浅沟与切沟流的水动力特性及侵蚀规律进行了初步探讨。研究结果对于揭示土壤侵蚀链内不同侵蚀方式下的水沙流动力学机制,以及土壤侵蚀演化规律具有重要意义。更多还原

【Abstract】 Based on the simulated rainfall experiments, the relationships between the velocitydischarge, depth of runoffdischarge, the velocitythe depth, resistance coefficient with the Reynolds number in rill runoff are established systematically studied; the effects of rain intensity and slope on hydraulic feature, the erosion characteristics of various runoff types and runoff fluidization states and hydropower elements, and the hydrodriving characteristics and erosion processes in shallow furrow and gully are researched preliminarily The results are very important to explain the dynamic mechanism of sedimentwater flow under various types of gully erosion in erosion chain and occurrence and evolution of soil erosion chain更多还原