| 两种含瓦斯煤样的渗透性对比试验研究 |
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| 引用本文： | 高魁,刘泽功,刘健. 两种含瓦斯煤样的渗透性对比试验研究[J]. 煤炭科学技术, 2011, 39(8): 57-59 |
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| 作者姓名： | 高魁 刘泽功 刘健 |
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| 作者单位： | 煤矿安全高效开采省部共建教育部重点实验室,安徽淮南,232001 |
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| 基金项目： | 国家自然科学基金资助项目(51004003,50974004); 安徽省教育厅自然科学基金重点资助项目(KJ2010A091) |
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| 摘 要： | 为了解井下煤层受采动作用的影响时原岩应力升降过程中引起的煤体瓦斯渗透性变化规律,利用MYS-Ⅰ型煤岩样渗透率测试系统,通过改变围压和瓦斯压力的方法,对比研究了成型煤样和原煤样渗透率之间的异同。试验结果表明：成型煤样和原煤样之间的渗透率差别很大,数值上相差在一个数量级左右;在瓦斯压力固定的条件下,原煤样渗透率随围压增大而下降的速度比成型煤样要缓慢;成型煤样和原煤样渗透率随围压和瓦斯压力改变的变化趋势基本相同,在实验室用成型煤样代替原煤样用于渗透性试验是可行的,但只能研究大致的变化规律。
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| 关 键 词： | 原煤样 成型煤样 渗透率 围压 瓦斯压力 渗透试验 |
Study on Permeability Comparison Tests with Two Different Gas Content Coal Samples |
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| GAO Kui,,LIU Ze-gong,LIU Jian. Study on Permeability Comparison Tests with Two Different Gas Content Coal Samples[J]. Coal Science and Technology, 2011, 39(8): 57-59 |
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| Authors: | GAO Kui LIU Ze-gong LIU Jian |
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| Affiliation: | GAO Kui1,2,LIU Ze-gong1,LIU Jian1,2(1.School of Energy and Safety,Anhui University of Science and Technology,Huainan 232001,China,2.Provincial and MOE Joint Established Key Lab of Coal Mine Safety and High Efficient Mining,China) |
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| Abstract: | In order to analyze the variation law of the seam gas permeability occurred in the rising and dropping of the in-situ rock stress under the influences of the mining operation,the MYS-I permeability measuring system of coal and rock sample was applied to the comparison study on the permeability difference between the briquette coal sample and the raw coal sample with the method to change the surrounding pressure and the gas pressure.The test results showed that there was a big difference of the permeability ... |
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| Keywords: | raw coal sample briquette coal sample permeability surrounding rock pressure gas pressure permeability test |
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