| D-P准则与岩石断裂韧度K_(Ic),K_(II)c关系的研究 |
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| 作者单位： | 三峡大学土木与水电学院 宜昌443002 |
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| 摘 要： | 通过断裂力学中裂纹端部的应力叠加,得出拉剪裂纹的端部总应力,代入D-P破坏准则,经推导得出D-P准则与岩石断裂韧度KIc,KIIc的相互关系。并以三峡永久船闸高边坡为例,说明该推导的合理性。
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| 关 键 词： | 岩石力学 拉剪裂纹 D-P准则 断裂韧度 |
RESEARCH ON RELATION OF D-P FAILURE CRITERION AND ROCK FRACTURE TOUGHNESS K_(Ic),K_(IIc) |
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| Liu Jie,Li Jianlin,Zhou Jifang,Chen Pingshan,Chen Xinzhou. RESEARCH ON RELATION OF D-P FAILURE CRITERION AND ROCK FRACTURE TOUGHNESS K_(Ic),K_(IIc)[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 0(Z1) |
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| Authors: | Liu Jie Li Jianlin Zhou Jifang Chen Pingshan Chen Xinzhou |
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| Abstract: | Through overlapping the stresses at the end region of a crack,the total stress at the end region of tensile and shearing crack is obtained,which is then introduced into D-P failure criterion.The relation between coefficient of D-P failure criterion and rock fracture toughness KIc,KIIc is deduced.The validity of deduced relation is proved by an example of slope rock masses in Three Gorges Project. |
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| Keywords: | rock mechanics tensile and shearing crack D-P failure criterion fracture toughness |
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