层状岩质边坡弯曲倾倒破坏研究进展
Developments in the Study on Flexural Toppling Failure of Foliated Rock Slopes
DOI: 10.12677/HJCE.2023.121007, PDF,   
作者: 沈 均, 张 涛：中铁二院工程集团有限责任公司，四川 成都
关键词: 层状岩质边坡；倾倒破坏；弯曲倾倒；稳定性分析；Foliated Rock Slopes； Toppling Failure； Flexural Toppling； Stability Analysis
摘要: 由于层状岩体特殊的地质力学结构特征，在此类岩体中边坡可能发生多种类型的失稳破坏，其中倾倒破坏是较常见的一种。根据发生机理的不同，倾倒破坏可分为三种类型，即弯曲倾倒、块体倾倒和块体–弯曲倾倒。弯曲倾倒主要发生在仅有一组陡倾节理的情况，与块体倾倒不同，弯曲倾倒的破坏机制为类似悬臂梁的弯曲破坏，弯矩产生的拉应力超过岩石的抗力强度是造成破坏的主要原因。本文就岩体边坡弯曲倾倒变形破坏机制与规律认识，以及解析解、数值模拟和物理模拟研究进展进行了系统总结，对有待深入思考的问题和可能的研究途径进行了探讨。
Abstract: Depending upon the geologic conditions and material properties of rock and discontinuities, various kinds of instabilities are likely to be encountered in slope excavation. One of these is the toppling failure which has become to be known recently. From the mechanism point of view, the main toppling failures are classified as flexural, blocky, and block-flexure. Flexural toppling typically occurs in rock masses composed of a set of parallel discontinuities and dipping steeply against the face slope. In such a case, failure occurs through bending of layers of rock in a similar manner to that of cantilever beams. Recent advances in the study of flexural toppling failure using analytical, numerical and physical techniques have been demonstrated in this paper. Significant potential for furthering our understanding of both mechanisms/processes is also presented.
文章引用：沈均, 张涛. 层状岩质边坡弯曲倾倒破坏研究进展[J]. 土木工程, 2023, 12(1): 50-59. https://doi.org/10.12677/HJCE.2023.121007

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