| 秦剑峰,卓家寿.可储能原则在一类岩爆问题中的研究和应用[J].计算力学学报,2009,26(3):318~323 |
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| 可储能原则在一类岩爆问题中的研究和应用 |
| Study on the energy storage ability criterion in a kind of rockburst and application |
| 投稿时间：2008-08-08 |
| DOI：10.7511/jslx20093006 |
| 中文关键词: 岩爆 能量 可储能 应力 |
| 英文关键词:Jointd Rock viscoelasticity equivalent analysis adaptive algorithm finite element |
| 基金项目:国家自然科学基金重点(50539090)资助项目. |
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| 摘要点击次数: 1319 |
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| 中文摘要: |
| 从能量的角度对一类岩爆问题——应变型岩爆进行一些探讨。对此类岩爆能量的来源、能量的去处及能量释放的原因和大小进行了完整的论述。提出了岩体的可储能原则——岩体可存储的能量并非定值,而是随应力状态的变化而改变,当应力发生突变,岩体内实际存储的能量大于可储能时,多余的能量必将以各种形式瞬间释放,其中包括动能。根据此准则对简化了的一维、三维模型进行了详细的分析和计算,并结合离散元软件3DEC再现了三维卸载岩爆的破坏过程。 |
| 英文摘要: |
| Study on a kind of rockburst-strain bursting from the point of energy. The researches give a complete discussion on the sources of energy,the way energy dissipation,the magnitude of the released energy and its reason. The energy storage ability criterion is put forward: the capacity of energy storage of rockmass is not a constant,it changes with the stress. When the stress changes suddenly,resulting the energy stored larger than the capacity of energy storage under present stress,the residual energy will release in kinds of way,including the kinetic energy. The simplified one-dimensional and three-dimensional models are analyzed based on the energy storage ability criterion,and the process of rockburst in the condition of unloading is reappeared using the discrete element software 3DEC. |
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