论文部分内容阅读
利用变坡式水槽,在坡度(20°,25°,30°,35°,40°)和流量(1.1,2.2,3.3,4.4,5.5L/min)下进行崩岗崩积体土壤的分离试验。结果表明:流量对土壤分离速率的作用大于坡度,土壤分离速率与坡度及流量呈线性相关;水深对土壤分离速率的影响大于坡度,土壤分离速率与坡度及水深呈线性相关;土壤分离速率与水流流速呈指数函数关系;水流剪切力、水流功率及单位水流功率与土壤分离速率之间的关系均为线性关系,其中,水流功率和水流剪切力可以很好地描述崩积体的土壤分离速率。
Slope collapse (20 °, 25 °, 30 °, 35 °, 40 °) and flow rate (1.1, 2.2, 3.3, 4.4, 5.5 L / min) test. The results showed that the effect of flow rate on soil separation rate was greater than that of slope. The correlation between soil separation rate and slope degree and flow rate was linear. The influence of water depth on soil separation rate was greater than that of slope. Soil separation rate was linearly correlated with slope and water depth. The relationship between flow shear force, water flow rate and unit water flow rate and soil separation rate were linear. Among them, the flow power and flow shear force could well describe the soil detachment rate.