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本文以黄河上游某拟建水电站坝址场地为例,论证了圈闭地形内斜坡破坏的多期性和规律性问题。在充分的野外调查和室内研究资料的基础上,将区内的斜坡破坏分为两期,即第一期为已经失稳的老滑坡群;第二期为发育在第一期滑坡群圈闭状破裂壁之后的正处于蠕动和破坏阶段的变形坡体,进而将第一期的滑坡分为两个强度次序。同时,还揭示了圈闭地形内斜坡破坏的规律性,即随着期和序次的增高,斜坡破坏面积增大,滑坡个数增多,规模减小,强度降低,滑距变短,滑体破碎程度变弱。最后指出,上述多期性和规律性应具有普遍性意义。
In this paper, taking the site of a proposed hydropower station dam site as an example in the upper Yellow River, the multi-period and regularity problems of slope failure in the enclosed terrain are demonstrated. On the basis of sufficient field investigation and indoor research data, the slope failure in the area is divided into two phases, namely, the first phase is the old landslide group that has become unstable; the second phase is the development of the first landslide cluster traps After the rupture of the wall, the deformed slope is in the stage of peristalsis and failure, and then the first stage landslide is divided into two intensity orders. At the same time, the regularity of slope failure in the closed terrain was also revealed. With the increase of period and sequence, the area of slope failure increased, the number of landslides increased, the size decreased, the strength decreased, the sliding distance shortened, Broken degree of weakening. Finally, we point out that the above-mentioned periodality and regularity should have universal significance.