| 缓倾角层状岩体边坡链式演化规律 |
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| 引用本文： | 陈洪凯,唐红梅,鲜学福. 缓倾角层状岩体边坡链式演化规律[J]. 兰州大学学报(自然科学版), 2009, 45(1) |
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| 作者姓名： | 陈洪凯 唐红梅 鲜学福 |
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| 作者单位： | 重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆,400040;重庆交通大学岩土与地质工程系,重庆,400074;重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆,400040 |
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| 基金项目： | 国家自然科学基金,重庆市自然科学基金 |
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| 摘 要： | 砂岩-泥岩及灰岩-泥岩等软硬相间的缓倾角层状岩体边坡呈现多台阶倒梯形特征.运用地貌学方法揭示了缓倾角层状岩体边坡链式演化规律,包括危岩块从坡脚向坡顶逐渐形成、崩落演化的微观链和从边坡临空面逐渐向山体内部阶段性后退的宏观链,可分为仅有一个宏观链的简单模式和多个宏观链同时存在的复合嵌套模式.泥岩和砂岩、灰岩等软硬岩石之间的差异风化孕发了陡崖底部的岩腔,内部泥岩的应力风化加速了岩腔发育.岩腔是链式演化规律的源动力,将边坡链式演化机制分为岩腔形成机制、基座压裂破坏机制和危岩坠落机制.基于极限平衡理论建立了第一个微观链危岩体后部主控结构面顶端开裂与岩腔深度之间的量化关系.
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| 关 键 词： | 岩石力学 链式演化规律 岩腔 缓倾角层状岩体边坡 |
Chained developing pattern for rock slopes with gentle dip strata |
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| CHEN Hong-kai,TANG Houg-mei,XIAN Xue-fu. Chained developing pattern for rock slopes with gentle dip strata[J]. Journal of Lanzhou University(Natural Science), 2009, 45(1) |
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| Authors: | CHEN Hong-kai TANG Houg-mei XIAN Xue-fu |
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| Affiliation: | 1;2;1.Key Laboratory of the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering with the Ministry of Education;Chongqing University;Chongqing 400040;China;2.Department of Geotechnical & Geological Engineering;Chongqing Jiaotong University;Chongqing 400074;China |
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| Abstract: | For rock slopes with gentle dip strata composed of sandstone and carbonite with mudstone alternately,anti-ladder-shaped landforms with steps were discovered.In accordance with geomorphological principles,chained developing patterns for rock slopes were promulgated.The pattern was composed of the macro-chain and micro-chain.To one macro-chain,the face of the cliff retreated backward close by the face of the cliff;to one micro-chain,perilous rock blocks avalanches one by one from the foot to the top of the cl... |
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| Keywords: | rock mechanics chained developing pattern rock cell rock slopes with gentle dip strata |
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