反倾向岩质斜坡变形破坏特征研究* |
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引用本文: | 任光明 聂德新 刘 高. 反倾向岩质斜坡变形破坏特征研究*[J]. 岩石力学与工程学报, 2003, 22(Z2): 2707-2707 |
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作者姓名: | 任光明 聂德新 刘 高 |
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作者单位: | 任光明(成都理工大学工程地质研究所,成都,610059) 聂德新(成都理工大学工程地质研究所,成都,610059) 刘高(兰州大学,兰州,730000) |
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基金项目: | 国家自然科学基金(40072090)资助项目. |
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摘 要: | 以黄河上游某电站库区一大型反倾层状岩质斜坡的变形破坏为例,通过地质分析及数值模拟分析,揭示了该类斜坡的变形破坏是岩层在自重应力作用下作悬臂梁弯曲,使岩层发生弯曲变形,导致坡体后缘开裂、根部折断,前缘发生剪切蠕变,当坡体内折断带的剪应力超过其抗剪强度时,坡体逐渐错动下滑形成倾倒塌滑体。
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关 键 词: | 关键词 斜坡反倾岩层变形破坏形成机制数值模拟 |
文章编号: | 1000-6915(2003)增2-2707-04 |
收稿时间: | 2003-03-01 |
修稿时间: | 2003-03-01 |
STUDIES ON DEFORMATION AND FAILURE PROPERTIES OF ANTI-DIP ROCKMASS SLOPE |
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Abstract: | Based on the field investigation,geology analysis and numerical simulation of a large-scale slope in reservoir area on the upstream of Yellow River,the rules of deformation and failure of this kind of slopes are disclosed. The layered rock bends like cantilever under the effect of gravity. When rock mass in back of the slope bends to a certain extent,its root will break off and create a continuous weak surface,and shear creep will occur in the toe of the slope. When the shear stress excesses to the shear strength of the weak surface,the topple-slumping will occur in the shear stress concentration zone of the slope. |
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Keywords: | Key words slope anti-dip layered rock mass deformation and failure mechanism numerical simulation |
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