| 突出煤和非突出煤全应力-应变瓦斯渗流试验研究 |
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| 引用本文： | 尹光志,蒋长宝,李晓泉,王维忠,蔡波.突出煤和非突出煤全应力-应变瓦斯渗流试验研究[J].岩土力学,2011,32(6):1613-1619. |
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| 作者姓名： | 尹光志 蒋长宝 李晓泉 王维忠 蔡波 |
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| 作者单位： | 1. 重庆大学 煤矿灾害动力学与控制国家重点实验室，重庆 400030；2. 重庆大学 资源及环境科学学院，重庆 400030； 3. 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 400030 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目，国家自然科学基金项目资助，中央高校基本科研业务费资助项目，重庆大学"211工程"三期创新人才培养计划建设项目资助 |
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| 摘 要： | 以突出煤和非突出煤的型煤为研究对象，设计两种型煤全应力-应变瓦斯渗流试验方案，利用含瓦斯煤热-流-固耦合三轴伺服渗流试验系统，对比研究了两种型煤全应力-应变瓦斯渗流规律。结果表明，在应力-应变全过程中突出煤和非突出煤的煤样变形和瓦斯流量变化规律基本一致，即两种型煤在应力-应变全过程中瓦斯流量与煤样损伤变形的进程密切相关；瓦斯流量随着煤样的体积压缩而变小，且在煤样体积被压缩至最小时瓦斯流量降为最低值，煤样开始扩容后瓦斯流量转为增大；瓦斯流量随围压的增大而减小，且围压越大，瓦斯流量随应变变化的幅度越小。煤性对煤层瓦斯渗透性有明显影响，其渗透性可作为判断煤与瓦斯突出危险程度的一个重要指标
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| 关 键 词： | 岩石力学 采矿工程 渗流 全应力-应变 型煤 瓦斯 |
| 收稿时间： | 2009-08-24 |
An experimental study of gas permeabilities of outburst and nonoutburst coals under complete stress-strain process |
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| YIN Guang-zhi,JIANG Chang-bao,LI Xiao-quan,WANG Wei-zhong,CAI Bo.An experimental study of gas permeabilities of outburst and nonoutburst coals under complete stress-strain process[J].Rock and Soil Mechanics,2011,32(6):1613-1619. |
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| Authors: | YIN Guang-zhi JIANG Chang-bao LI Xiao-quan WANG Wei-zhong CAI Bo |
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| Institution: | 1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400030, China; 2. College of Resources and Environmental Science, Chongqing University, Chongqing 400030, China; 3. State and Local Joint Engineering Laboratory of Methane Drainage in Complex coal Gas Seam, Chongqing University, Chongqing 400030, China |
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| Abstract: | Focusing on outburst coal and nonoutburst coal,the permeability experiments on the outburst coal and nonoutburst coal briquettes during the complete stress-strain process were designed using Coal Containing Gas THM Coupling System;to study their permeable properties in the complete stress-strain process.The results show that: during the complete stress-strain process,the deformation of outburst/nonoutburst coal showed similar trends with gas volume flow velocity,which means,in the complete stress-strain pro... |
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| Keywords: | rock mechanics mining engineering seepage complete stress-strain process briquette gas |
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