| The creep experiment and theoretical model analysis of gas- containing coal |
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| 作者姓名： | 尹光志 张东明 王维中 |
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| 作者单位： | [1]College of Resources and Environmental Sciences, Chongqing Universty, Chongqing 400044, China [2]Key Laboratory for the Exploitation of Southwest Resources ＆ the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, China |
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| 基金项目： | National Basic Research Program of China （973 program）（2005CB221502）; National Natural Science Foundation of China（50534080）; National Natural Science Foundation of China（50604021 ） |
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| 摘 要： | A creep experiment of preformed molding coal under different confining pressures were carried out using self-developed 3-triaxial creep loading device for gas-containing coal, which loaded by Shimadzu AGI-250 kN electrical servo-controlled stiffness testing machine. Based on the experimental results, the variation trend of axial deformation under different stress states was studied, and creep failure characteristics of gas-containing coal under different confining pressures were analyzed. The experimental results were identified with seven-component nonlinear viscoelasto-plastic creep model （Hohai model）, and the creep material parameters were obtained. The experimental result complies well with the theoretical value of this model. It indicates that creep constitutive relation of gas-containing coal can be expressed by nonlinear viscoelasto-plastic creep model correctly.
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| 关 键 词： | 蠕变实验 煤炭 天然气 安全性能 开采技术 |
The creep experiment and theoretical model analysis of gas- containing coal |
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| YIN Guang-zhi, ZHANG Dong-ming, WANG Wei-zhong.The creep experiment and theoretical model analysis of gas- containing coal[J].Journal of Coal Science & Engineering(China),2007,13(4):458-462. |
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| Authors: | YIN Guang-zhi ZHANG Dong-ming WANG Wei-zhong |
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| Abstract: | |
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| Keywords: | creep gas-containing coal nonlinear viscoelasto-plastic model |
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