| 具有软弱基座的逆向岩质斜坡形成演化机理研究 |
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| 引用本文： | 王宏益,马延龙,姜鑫,沈军辉.具有软弱基座的逆向岩质斜坡形成演化机理研究[J].地质灾害与环境保护,2014(2):59-62. |
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| 作者姓名： | 王宏益 马延龙 姜鑫 沈军辉 |
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| 作者单位： | 甘肃省地矿局第三地质矿产勘查院;成都理工大学地质灾害防治与地质环境保护国家重点实验室; |
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| 摘 要： | 通过地质分析及数值模拟分析,研究青川县一个下部具有软弱基座、上部为硬质岩体的大型逆向层状岩质斜坡的变形破坏。得出其演化的地质力学模式为压致蠕变、拉裂、倾倒型。即软弱基座的压缩蠕变引起上部硬质岩体拉裂和弯曲,最终导致斜坡后缘拉张开裂而前缘压缩弯曲的倾倒式变形。
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| 关 键 词： | 斜坡 软弱基座 逆向岩层 演化机理 |
FORMATION AND EVOLUTION MECHANISM OF ANTI-DIP ROCK SLOPES WITH WEAK BASES |
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| Institution: | WANG Hong-yi ,MA Yan-long ,JIANG Xin,SHEN Jun-hui (1. Third Institute of Geological and Mineral Exploration of Gansu Bureau of Geology and Mineral Resources, Lanzhou 730050,China; 2. State Key Laboratory of Geo-hazard Prevention and Geo-environment Protection, Chengdu University of Technology,Chengdu 610059,China ) |
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| Abstract: | Geologic analysis and numerical simulation analysis are employed to study the deformation of a large anti-dip layered rock slope with weak base and hard upper rock in Qingchuan. The geo-mechanical model for the evolution of this kind of slope is compression-induced creeping, tensile cracking and collapsing. In other words, the compressive creep of the weak base leads to hard upper rock cracking and bending, and finally to the tensile cracking of the back edge and compression-bent tilting deformation of the front edge. |
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| Keywords: | slope weak base anti-dip layered rock evolution mechanism |
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