论文部分内容阅读
崩积体是崩岗的重要组成部分,具有土质疏松、粗颗粒含量高、坡度大、易侵蚀等特征。通过不同上方来水(3.6,7.2,10.8,14.4L/min)和不同坡度(20°,25°,30°,35°,40°)相结合的室内放水冲刷试验,模拟不同上方来水及坡度对崩岗崩积体侵蚀的影响。结果表明:崩积体侵蚀产沙过程可分为逐步递增阶段、波动变化阶段和稳定阶段;含沙量随时间的变化分为平缓型和多峰型两种;在20°,25°和30°条件下,崩积体坡面流基本都属于低含沙水流,在35°和40°条件下,崩积体坡面流均属于高含沙水流;上方来水对产沙量的影响大于坡度,而坡度对含沙量的影响大于上方来水;可利用上方来水和坡度对崩积体坡面产沙量及含沙量进行较好地预测。
Collapse body is an important part of collapsing, with features such as loose soil, high coarse grain content, large slope and easy erosion. The indoor water scouring test with different top water (3.6,7.2,10.8,14.4L / min) and different slope (20 °, 25 °, 30 °, 35 °, 40 °) Influence of Slope on Erosion of Collapse Collapse. The results show that the process of sediment erosion and sediment yield can be divided into stages of gradual increment, fluctuation and stabilization. The change of sediment concentration over time is divided into two types: gentle and multi-peak; at 20 °, 25 ° and 30 ° °, the slopes of the sediment are basically of low-sediment flow. Under the conditions of 35 ° and 40 °, the slopes of the sediments are all of high sediment concentration; Slope and slope have more influence on the sediment concentration than the above water. The runoff and slope above the slope can be used to predict the sediment yield and sediment concentration of the slope.