| 含瓦斯煤岩三轴蠕变特性及本构关系 |
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| 引用本文： | 王维忠,尹光志,赵洪宝,李东伟.含瓦斯煤岩三轴蠕变特性及本构关系[J].重庆大学学报(自然科学版),2009,32(2):197-201. |
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| 作者姓名： | 王维忠 尹光志 赵洪宝 李东伟 |
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| 作者单位： | 重庆大学,资源及环境科学学院,重庆,400030;重庆大学,西南资源开发及环境灾害控制工程教育部重点实验室,重庆,400030
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划(973计划)，国家自然科学基金重点项目，重庆市自然科学基金 |
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| 摘 要： | 通过不同载荷水平的含瓦斯煤岩常规三轴蠕变试验,得到含瓦斯成型煤样常规三轴蠕变特性,并对实验曲线进行了数学拟合研究;在对广义西元模型进行了改进的基础上,建立含瓦斯煤岩三轴蠕变本构模型.结果显示,含瓦斯煤岩的蠕变特性与所选载荷水平密切相关且围压、瓦斯压力明显延缓煤样的蠕变变形;三阶曲线-ε(t)可以较好地表征含瓦斯煤岩常规三轴蠕变的3个阶段;建立的改进广义西元模型可以较好表征含瓦斯煤岩三轴蠕变本构关系.
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| 关 键 词： | 含瓦斯煤岩 蠕变 模型参数 广义西元模型 |
Triaxial creep characteristics and constitutive relation of gas containing coal |
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| WANG Wei-zhong a,b,YIN Guang-zhi a,ZHAO Hong-bao a,LI Dong-wei a,b.Triaxial creep characteristics and constitutive relation of gas containing coal[J].Journal of Chongqing University(Natural Science Edition),2009,32(2):197-201. |
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| Authors: | WANG Wei-zhong a b YIN Guang-zhi a ZHAO Hong-bao a LI Dong-wei a b |
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| Institution: | a.College of Resources and Environmental Science;b.Key Laboratory for the Exploitation of Southwestern Resources and Environmental Disaster Control Engineering;Ministry of Education;Chongqing University;Chongqing 400030;P.R.China |
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| Abstract: | The characteristics of conventional triaxial creep are obtained via a conventional triaxial creep test of gas-containing coal under different stress levels.Mathematical fitting research regarding an experimental curve is done.A constitutive model of conventional triaxial creep of gas-containing coal is developed by improving a generalized K-B model.The results show that the characteristics of conventional triaxial creep of gas-containing coal are related to the load step,and creep deformation is limited by ... |
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| Keywords: | gas-containing coal creep model parameters generalized K-B model |
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