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通过自制的试验装置,模拟天然降雨过程,研究碎石土斜坡优先流的形成机理以及优先流对碎石土斜坡地下径流的影响,为揭示降雨诱发碎石土斜坡变形破坏机理提供理论依据和数据支撑。研究了颗粒组成结构、降雨历程、地下水、干缩、冻融交替等因素对碎石土斜坡优先流的影响,以及优先流对碎石土颗粒组成结构、碎石土斜坡地下径流的影响,揭示碎石土斜坡优先流的形成机理。通过染色示踪试验,揭示了碎石土斜坡优先流的形态和分布特征,为碎石土斜坡优先流的进一步量化研究提供依据。
Through the self-made experimental device, the natural rainfall process was simulated, the formation mechanism of preferential flow on gravelly soil and the influence of preferential flow on the runoff of gravelly soil slope were studied, which provided theoretical basis and data for revealing the deformation and failure mechanism of rainfall-induced gravelly soil slope support. The effect of particle composition, rainfall course, groundwater, dry shrinkage, freeze-thaw alternation and other factors on the preferential flow of gravelly soil slopes and the influence of preferential flow on the composition of gravelly soil particles and the runoff of gravelly soil slopes Formation mechanism of preferential flow on gravelly soil slope. Through the dye tracing test, the morphology and distribution characteristics of preferential flow on gravelly soil slopes were revealed, which provided the basis for the further quantification of preferential flow on gravelly soil slopes.