考虑土体开裂的膨胀土非饱和渗流分析

Analysis on the Unsaturated Vadose of the Expansive Soil Considered about the Soil Crack

通过考虑与不考虑土体裂隙的对比研究,求解在给定入渗条件下的膨胀土边坡瞬态含水率分布和孔隙水压力分布,揭示了考虑裂隙影响的膨胀土边坡的渗流场变化规律,指出在降雨入渗条件下,必须考虑土体开裂的影响,才能得到符合实际情况的解答,并给出了裂隙对渗流场变化的影响途径。

Through the comparative analysis on the consideration and on conside ration about the soil crack, this paper solves the transient water content distr ibution and the pore water pressure distribution of the expansive soil slope und er the given vadose condition, reveals the varying regulation of the vadose fiel d of expansive soil slope considering about the influence of the cracks, points out that under the condition of the raining permeation, only when the influence of the soil crack is taken into the consideration, can the solution fitting in w ith the actual conditions be obtained, and gives the influencing paths of the cr ack on the variation of the vadose field.