| 煤岩体变形失稳破坏条件的研究 |
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| 引用本文： | 周晓军 鲜学福. 煤岩体变形失稳破坏条件的研究[J]. 西部探矿工程, 1998, 10(4): 44-46 |
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| 作者姓名： | 周晓军 鲜学福 |
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| 作者单位： | 西南交通大学地岩系(周晓军)，重庆大学资源及环境工程学院(鲜学福) |
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| 摘 要： | 煤岩体在外载荷作用下发生失稳破坏时的一个重要性质就是其变形具有应变软化的特征。鉴于此，文中分别以粘弹性本构模型和微元统计损伤本构模型对煤岩体变形失稳破坏的条件进行了研究，并给出了其中控制变形发生分叉的两个形变参数之间的关系式。
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| 关 键 词： | 变形 应变软化 粘弹性 损伤 本构方程 分叉 |
Study on Condition of Deformation Failure of Coal and Rock |
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| Abstract: | An important characteristic of instability failure of coal and rock which is subjected to external loadings is that its deformation possesses property of strain softening.Based on this,the paper deals with the condition of instability failure of coal and rock by means of visco-elasto constitutive and micro-statistical damage constitutive model,concurrently presents a formula of the two deformation parametres which takes major dominance over the deformation bifurcation of coal and rock. |
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| Keywords: | deformation strain softening viscoelasticity damage constitutive equation bifurcation |
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