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| 近水平厚层高陡斜坡崩塌机制研究 | |
| 引用本文： | 冯振,李滨,贺凯. 近水平厚层高陡斜坡崩塌机制研究[J]. 地质力学学报, 2014, 20(2): 123-131 |
| 作者姓名： | 冯振 李滨 贺凯 |
| 作者单位： | 1.中国地质科学院地质力学研究所, 北京 100081 |
| 基金项目： | 国家自然科学基金项目(41302246);中国地质科学院地质力学研究所基本科研业务费项目(DZLXJK201307);国家科技支撑课题(2012BAK10B01);地质调查项目(1212011220140) |
| 摘 要： | 近水平厚层高陡斜坡岩层倾角小于10°，具有软硬相间或上硬下软的结构，常形成高陡斜坡或陡崖地形，主要以大型崩塌的形式发生破坏。在梳理国内外文献的基础上，从岩体破坏机制出发，对近水平厚层高陡斜坡崩塌的形成过程、破坏机制、失稳模式进行分析，总结归纳了6种地质力学模型，包括滑移-拉裂、塑流-拉裂、倾倒-拉裂、剪切-错断、剪切-滑移、劈裂-溃屈，并提出了相应的野外识别特征。 |
| 关 键 词： | 近水平层状山体 陡倾构造节理裂隙 岩体破坏机制 失稳模式 地质力学模型 |
| 收稿时间： | 2014-02-12 |
ROCK COLLAPSE MECHANISM ON HIGH-STEEP SLOPE FAILURE IN SUB-HORIZONTAL THICK-BEDDED MOUNTAINS |
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| FENG Zhen,LI Bin and HE Kai. ROCK COLLAPSE MECHANISM ON HIGH-STEEP SLOPE FAILURE IN SUB-HORIZONTAL THICK-BEDDED MOUNTAINS[J]. Journal of Geomechanics, 2014, 20(2): 123-131 | |
| Authors: | FENG Zhen LI Bin HE Kai |
| Affiliation: | 1.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China2.Key laboratory of Neotectonic and Goehazard, Ministry of Land and Resources, Beijing 100081, China3.School of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China |
| Abstract: | Sub-horizontal thick bedding slope shows a gentle dip of approximately 0~10°and strata structure of hard on soft, or hard interbedded with soft. It forms a high and steep terrain and is prone to rock collapse. Reviewing a lot of references, failure process and initiation mechanism, as well as failure modes of high-steep slope in sub-horizontal thick bedding mountains are analyzed in terms of rock mass failure mechanism. Six geomechanic models are summarized such as slipe-tensile, creep-tensile, slipe-shear, shear-rupture, shear-slipe and split-bulk. Corresponding to the reconginition features of geological structure are also presented. |
| Keywords: | sub-horizontal bedding slope vertical tectonic joints failure mechanism of rock mass failure mode geomechanic model |
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