| 煤样渗透率对有效应力敏感性实验分析 |
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| 引用本文： | 彭守建,许江,陶云奇,程明俊. 煤样渗透率对有效应力敏感性实验分析[J]. 重庆大学学报(自然科学版), 2009, 32(3): 303-307 |
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| 作者姓名： | 彭守建 许江 陶云奇 程明俊 |
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| 作者单位： | 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： | 国家自然科学基金重点项目，重庆市科技攻关计划重大项目 |
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| 摘 要： | 研究煤样渗透率对有效应力的敏感性.实验结果表明,在低有效应力水平下,煤样渗透率随着有效应力的增加而迅速减小,其变化规律符合负指数函数关系.由于煤层渗透率的影响因素比较复杂,定义了煤样渗透率对有效应力的敏感性系数,从而将影响因素进行归一化处理.根据渗透实验结果,拟合得到敏感系数与有效应力之间的幂函数关系,该敏感系数反映出煤样渗透率随有效应力的变化趋势.最后推导出基于敏感系数的煤样渗透率与有效应力的函数关系式.
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| 关 键 词： | 有效应力 渗透率 敏感系数 |
Coefficient of sensitiveness between permeability and effective pressure of coal samples |
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| PENG Shou-jian,XU jiang,TAO Yun-qi,CHENG Ming-jun. Coefficient of sensitiveness between permeability and effective pressure of coal samples[J]. Journal of Chongqing University(Natural Science Edition), 2009, 32(3): 303-307 |
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| Authors: | PENG Shou-jian XU jiang TAO Yun-qi CHENG Ming-jun |
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| Affiliation: | Key Laboratory for Exploitation of Southwestern Resources and Environmental Disaster ControlEngineering;Ministry of Education;Chongqing University;Chongqing 400030;P.R.China |
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| Abstract: | A study of the coefficient of sensitiveness between permeability and effective pressure of coal samples is conducted based on experimentation and analysis.Test results indicate that the permeability of coal samples drops rapidly as the effective pressure increases under a low effective pressure level.The variation relationship between them can be described by an exponential equation.The coupling mechanism of seepage in coal beds has not been completely made clear so far,and the coupling factors affecting th... |
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| Keywords: | pressure effects mechanical permeability coefficient of sensitiveness |
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