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植被在不同的坡度上生长的情况都是不同的,在控制土壤含根量相同的情况下进行不同坡度土壤的直剪试验得出土壤的抗剪强度,通过对比得出不同坡度下植被固坡效果的优劣,再通过三轴实验得到土壤的应力应变曲线,得到土壤在饱和情况下的剪切破坏曲线,从而得出不同坡度下植被的固坡效果,得出植被固坡的最优坡度范围。结果发现其坡角在23°左右时,坡体稳定性最好,且具有最优承载性能,坡角在30°~40°区间时,植被固坡效果稳定。
Vegetation growth on different slopes are different, under the same control of soil with the same amount of soil under different conditions, the direct shear test of soil shear strength obtained by comparing the different slopes of vegetation slope And then get the stress-strain curve of the soil through triaxial experiment to obtain the shear failure curve of the soil under the condition of saturation, so as to obtain the slope-fixing effect of the vegetation under different slope, and get the optimal gradient range. The results show that when the slope angle is about 23 °, the slope stability is the best, and has the best bearing capacity. When the slope angle is in the range of 30 ° ~ 40 °, the effect of vegetation slope stabilization is stable.