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膨胀土边坡的破坏在工程中极为常见,它是岩土工程的一个难题。当前对其破坏形式和破坏机理仍未形成统一的认识,影响了问题的解决。在对膨胀土地层结构分析的基础上,通过两个大型的现场试验,并结合许多滑坡实例,概括出膨胀土坡两种典型的滑动形式,即浅表层的膨胀型滑动(塌坡)和中深部的裂隙性滑坡,对膨胀土边坡的破坏有了新的认识。并分析了滑动的机理和影响因素,并对相应的处治对策提出了建议。
Destruction of expansive soil slope is very common in engineering, it is a problem of geotechnical engineering. At present, there is still no unified understanding of the destruction form and the mechanism of destruction, which has affected the solution of the issue. Based on the analysis of the structure of the expansive soil layer, two kinds of typical sliding forms of expansive soil slope are summed up by two large-scale field experiments combined with many landslide examples, namely, the expansive sliding (collapsing) Deep cracks in landslides, the destruction of expansive soil slopes have a new understanding. The mechanism of sliding and its influencing factors are also analyzed, and the corresponding suggestions are given.