| 多场耦合作用下煤层气的渗流特性与数值模拟 |
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| 引用本文： | 姜永东,阳兴洋,熊令,郑权.多场耦合作用下煤层气的渗流特性与数值模拟[J].重庆大学学报(自然科学版),2011,34(4):30-35. |
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| 作者姓名： | 姜永东 阳兴洋 熊令 郑权 |
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| 作者单位： | 姜永东,熊令,JIANG Yong-dong,YANG Xing-yang,XIONG Ling,ZHENG Quan(重庆大学复杂煤气层瓦斯抽采国家地方联合工程实验室,重庆,400044);阳兴洋,郑权(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,400044) |
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| 基金项目： | 国家自然科学创新研究群体基金资助项目，国家自然科学基金青年基金资助项目，教育部科学技术研究重点项目，重庆市科委院士专项，重庆大学"211工程"三期创新人才培养计划建设项目 |
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| 摘 要： | 根据实验研究煤样在轴向应力、围压、气压、温度单一因素作用下的渗流规律.利用Ansys12.0数值模拟了单场与多场耦合作用下煤层气的渗流规律,煤体的变形、孔隙压力、渗流场的分布规律.数值模拟得出:单场作用下煤层气在煤体中的渗流规律实验与数值模拟结果基本相同;多场耦合作用下煤的渗透率与平均有效应力曲线呈负指数关系;对试件变形的影响应力场大于渗流场,轴向应力对试件的变形大于围压;围压对渗流场的影响大于轴向应力,轴向应力对孔隙压力的影响大于围压,多场作用下孔隙压力大于单场作用.多场作用下数值模拟的结果与实验研究是一致的,因此研究煤层气的渗流规律必须考虑气-固-热的同时作用.
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| 关 键 词： | 煤层气 应力场 温度场 渗流场 数值模拟 |
| 收稿时间： | 2010/11/20 0:00:00 |
Multi-field coupling effect on coalbed methane seepage characteristics and numerical simulation |
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| JIANG Yong-dong,YANG Xing-yang,XIONG Ling and ZHENG Quan.Multi-field coupling effect on coalbed methane seepage characteristics and numerical simulation[J].Journal of Chongqing University(Natural Science Edition),2011,34(4):30-35. |
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| Authors: | JIANG Yong-dong YANG Xing-yang XIONG Ling and ZHENG Quan |
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| Institution: | JIANG Yong-dong,YANG Xing-yang,XIONG Ling,ZHENG Quan(a.Engineering Lab of the unionby contry and state for Complexiy of Coal bel methane gas extraction,b.Key Laboratory of Ministry of Education for the Exploitation of Southwestern Resources & Environmental Disaster Control Engineering,Chongqing University,Chongqing,400044,P.R.China) |
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| Abstract: | This paper studies the seepage of coal samples under the influence of each single factor,the axial stress,confining pressure,gas pressure,and temperature by experiments.It uses Ansys12.0 to numerically simulate the law of coalbed methane seepage,coal deformation,pore pressure,the distribution of flow field under the influence of each single field and multi-field coupled.The numerical simulation show that the result of numerical simulation of gas seepage law in the coal under each single fields is basically ... |
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| Keywords: | coalbed methane stress field temperature field seepage field numerical simulation |
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