| 岩石卸荷破坏特征与岩爆效应 |
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| 引用本文： | 王贤能,黄润秋.岩石卸荷破坏特征与岩爆效应[J].山地学报,1998(4). |
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| 作者姓名： | 王贤能 黄润秋 |
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| 作者单位： | 成都理工学院工程地质研究所 |
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| 基金项目： | 国家杰出青年科学基金,教育部跨世纪优秀人才计划基金 |
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| 摘 要： | 岩爆是在地下洞室开挖卸荷过程中发生的，岩爆特征与岩石卸荷破坏特征密切相关．本文设计了模拟洞室开挖过程的三轴卸荷实验，探讨了岩石在不同卸荷速率条件下的变形破坏特征及其岩爆效应
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| 关 键 词： | 三轴卸荷实验 卸荷速率 岩爆效应 |
ANALYSIS OF DEFORMATION AND FAILURE FEATURES CHARACTERISTICS OF ROCK UNDER UNLOALDING CONDITIONS AND THEIR EFFECTS ON ROCK BURST |
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| Wang,Xianneng,Huang,Runqiu.ANALYSIS OF DEFORMATION AND FAILURE FEATURES CHARACTERISTICS OF ROCK UNDER UNLOALDING CONDITIONS AND THEIR EFFECTS ON ROCK BURST[J].Journal of Mountain Research,1998(4). |
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| Authors: | Wang Xianneng Huang Runqiu |
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| Abstract: | There exists great difference of the deformation and failure characteristics between rock samples under loading and unloading conditions.Inthis paper,the triaxial test is designed to simulate the excavation of tunnel,and triaxial tests under loading and unloading conditions about thrcc kinds of rock (migmatitic granitc,migmatitic granitc containing grccn mincral and limcstonc)have been done.It shows that the elastic modulus under unloading conditions is less than that under loading conditions,and the strength of rock sample descends with the developing of unloading ratio,and the failure format or pattern is tensile type or tensile shear composite type.Rock burst occurs under the unloading conditions during the excavation of tunnel,its failure format is also tensile type or tensileshear composite type,which is proved in the field. |
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| Keywords: | triaxial test under unloading conditions unloading ratio rock burst effects |
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