| 不同性质煤的微观特性及渗透特性对比试验研究 |
| |
| 引用本文： | 李晓泉,尹光志. 不同性质煤的微观特性及渗透特性对比试验研究[J]. 岩石力学与工程学报, 2011, 30(3): 500-508 |
| |
| 作者姓名： | 李晓泉 尹光志 |
| |
| 作者单位： | (1. 广西大学 资源与冶金学院,广西 南宁 530004;2. 重庆大学 资源及环境科学学院,重庆 400030;3. 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) |
| |
| 基金项目： | 国家重点基础研究发展计划(973)项目(2011CB201203); 国家自然科学基金资助项目(50874124); 国家科技重大专项课题(2008ZX05034-002) |
| |
| 摘 要： | 对从典型矿井取得的不同性质煤,分别进行微观特性和瓦斯渗透特性试验。结果表明：突出煤的比表面积和吸附/解吸能力明显高于延期突出煤和非突出煤,延期突出煤介于二者之间。突出煤吸附能力强,解吸速度相对也较快,可能形成较高的气体压力,对煤岩的破坏性增强。非突出煤的渗透率明显高于突出煤和延期突出煤的渗透率,相差最大处超过4倍以上,煤的渗透特性好,瓦斯就较易在煤层中运移,煤层的储气条件差,瓦斯更容易从煤层中脱离出来,反之则会增加突出危险性。说明渗透特性是考察煤层是否具有突出危险性的一个重要指标。总之,煤的渗透特性和微观特性是密切相关的,吸附/解吸特性能力强,煤的渗透特性相对较差,强度较低,较易发生破坏,突出危险性较大。
|
| 关 键 词： | 采矿工程微观特性渗透特性吸附/解吸特性比表面积煤与瓦斯突出 |
| 收稿时间： | 2010-10-07; |
CONTRAST TEST OF MICROSCOPIC CHARACTERISTICS AND SEEPAGE PROPERTIES OF DIFFERENT COALS |
| |
| LI Xiaoquan,YIN Guangzhi. CONTRAST TEST OF MICROSCOPIC CHARACTERISTICS AND SEEPAGE PROPERTIES OF DIFFERENT COALS[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(3): 500-508 |
| |
| Authors: | LI Xiaoquan YIN Guangzhi |
| |
| Affiliation: | (1. College of Resources and Metallurgy,Guangxi University,Nanning,Guangxi 530004,China;2. College of Resources and Environmental Science,Chongqing University,Chongqing 400030,China;3. Key Laboratory of Exploitation of Southwest Resources and Environmental Disaster Control Engineering of Ministry of Education,Chongqing University,;Chongqing 400030,China) |
| |
| Abstract: | Tests of microscopic characteristics and seepage properties were done respectively,using different coals from the typical coal mines.The results show that specific surface area and adsorption/desorption capacity of outburst coal is higher than those of delay outburst coal and non-outburst coal,and delay outburst coal at intermediate between the two others.Adsorption capacity of outburst coal is strong,desorption velocity is very fast too.It can form very high gas pressure which enhance destructiveness of co... |
| |
| Keywords: | mining engineering microscopic characteristics seepage properties adsorption/desorption characteristics specific surface area coal and mathane outburst |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩石力学与工程学报》浏览原始摘要信息 |
|
点击此处可从《岩石力学与工程学报》下载全文 |
|
