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当渗流逸出坡面时,引起土坡局部稳定破坏的现象,其结果大家知道的很清楚,但对于这个现象的本质迄今为止研究的非常不够。局部稳定破坏与一般整个土坡或整个土坡连同基础部份一起的稳定破坏有所不同,当其破坏的初期,仅在坡面发生土粒的流出或在其上形成分离的小沟。局部稳定性的破坏,在基坑的开挖,土壩的冲积,路堑的开挖及其他的情况下,才偶然被我们所发现。
When the seepage flows out of the slope, it causes the local stable destruction of the slope. The result is well known. However, the nature of this phenomenon has not been studied so far. Local stability damage differs from the steady destruction of the entire soil slope or the entire soil slope along with the foundation. In the early stages of its destruction, soil particles flowed out or formed separate small grooves on the slope. The destruction of local stability was accidentally discovered by us when excavation of foundation pit, alluvial earth dam, excavation of cutting road and others.