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| 煤岩体裂隙集度演化理论模型 | |
| 引用本文： | 刘向峰,汪有刚,张志静. 煤岩体裂隙集度演化理论模型[J]. 辽宁工程技术大学学报(自然科学版), 2011, 30(2): 161-163 |
| 作者姓名： | 刘向峰 汪有刚 张志静 |
| 作者单位： | 1. 辽宁工程技术大学,力学与工程学院,辽宁,阜新,123000 2. 煤炭科学研究总院,开采研究分院,北京,100013 3. 渤海船舶职业学院,传播工程系,辽宁,葫芦岛,125000 |
| 基金项目： | 国家自然科学基金资助项目(50804020;10972096;51004061) |
| 摘 要： | 为了描述煤岩体内裂隙演化对其宏观力学特性的影响,引入了裂隙集度参量,从热力学平衡方程出发,推导出裂隙集度演化方程;根据岩石试件单轴压缩的全程应力应变实验结果,给出了单轴压缩下的裂隙集度演化方程和考虑裂隙集度对煤岩体力学性质影响的非线性弹性裂隙演化本构方程;通过单轴压缩煤岩试样实验数据值与理论值对比,两者吻合度相当高,证明了理论分析及其理论模型的正确性。 |
| 关 键 词： | 裂隙集度 演化规律 本构方程 理论模型 单轴压缩 |
Crack density evolution model of rock and coal |
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| LIU Xiangfeng,WANG Yougang,ZHANG Zhijing. Crack density evolution model of rock and coal[J]. Journal of Liaoning Technical University (Natural Science Edition), 2011, 30(2): 161-163 | |
| Authors: | LIU Xiangfeng WANG Yougang ZHANG Zhijing |
| Affiliation: | LIU Xiangfeng1,WANG Yougang2,ZHANG Zhijing3(1.The collage of mechanics and engineering,Liaoning Technical University,Fuxin 123000,China,2.Mining research institute,China Coal Research Institute,Beijing 100013,3.Department of Transmission Engineering,Bohai shipbuilding Vocational College,Huludao125000,China) |
| Abstract: | In order to describe the influence of the crack density evolution to mechanic characteristics of rock and coal,the crack density is introduced in the paper.By using of the thermodynamic balance law,the theoretical model the crack density evolution is build,and the equation of crack density evolution is derived.Based on the experimental results of the complete stress-strain of rock specimen under the uniaxial compression,the evolution equation of crack density and the nonlinear elastic constitutive equation ... |
| Keywords: | Crack density evolution law constitutive equation theoretical model uniaxial compression |
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