| 温度压力耦合作用下的岩石屈服破坏研究 |
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| 引用本文： | 左建平,谢和平,周宏伟.温度压力耦合作用下的岩石屈服破坏研究[J].岩石力学与工程学报,2005,24(16):2917-2921. |
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| 作者姓名： | 左建平 谢和平 周宏伟 |
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| 作者单位： | 1. 中国矿业大学,北京市岩石混凝土破坏力学重点实验室,岩石力学与分形研究所,北京100083
2. 中国矿业大学,北京市岩石混凝土破坏力学重点实验室,岩石力学与分形研究所,北京100083;四川大学,四川,成都,610065 |
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| 基金项目： | 国家自然科学基金资助项目(50490272,50221402,10372112)，教育部优秀青年教师资助计划资助 |
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| 摘 要： | 以深部开采为背景,讨论了温度和压力对深部岩石变形和破坏规律的影响。将岩石的屈服破坏过程视为能量释放和能量耗散的过程,根据最小耗能原理导出了温度和压力耦合作用下的深部岩石屈服破坏准则。该准则具有明确的物理意义,即当岩石的塑性耗散能及温度梯度引起热传导的耗散能累积耗散到一定程度时,岩石就会发生破坏失稳。
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| 关 键 词： | 岩石力学 温度压力耦合作用 深部开采 最小耗能原理 能量耗散 屈服破坏准则 |
| 文章编号： | 1000-6915（2005）16-2917-05 |
| 收稿时间： | 2005-05-09 |
| 修稿时间： | 2005-05-09 |
STUDY ON FAILURE BEHAVIOR OF ROCK UNDER COUPLING EFFECTS OF TEMPERATURE AND CONFINING PRESSURE |
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| ZUO Jian-ping,XIE He-ping,ZHOU Hong-wei.STUDY ON FAILURE BEHAVIOR OF ROCK UNDER COUPLING EFFECTS OF TEMPERATURE AND CONFINING PRESSURE[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2917-2921. |
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| Authors: | ZUO Jian-ping XIE He-ping ZHOU Hong-wei |
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| Abstract: | Based on the background of deep mining,some conclusions related to effects of temperature and confining pressure on behaviors of deformation and failure of rocks at depth are reviewed. Regarding the process of rock yield deformation and failure as a process of energy release and energy dissipation,a failure criterion of deep rocks subjected to coupling effects of confining pressure and temperature is proposed according to the principle of least energy consumption. With a clear physical meaning,this failure criterion shows that if both the plastic dissipation energy and heat conduction dissipation energy caused by temperature gradient in rocks reach to a critical value,the rock will lose its load carrying ability. |
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| Keywords: | rock mechanics coupling effects of temperature and confining pressure deep mining principle of least energy consumption energy dissipation yield failure criterion |
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