|本期目录/Table of Contents|

[1]李树刚,秦澳立,龙航,等.有效应力对煤体瓦斯解吸-渗流与变形特征影响的实验研究*[J].中国安全生产科学技术,2023,19(6):59-65.[doi:10.11731/j.issn.1673-193x.2023.06.009]
　LI Shugang,QIN Aoli,LONG Hang,et al.Experimental study on influence of effective stress on characteristics of coal gas desorption-seepage and deformation[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(6):59-65.[doi:10.11731/j.issn.1673-193x.2023.06.009]
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有效应力对煤体瓦斯解吸-渗流与变形特征影响的实验研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
19
期数:
2023年6期
页码:
59-65
栏目:
职业安全卫生管理与技术
出版日期:
2023-06-30

文章信息/Info

Title:
Experimental study on influence of effective stress on characteristics of coal gas desorption-seepage and deformation
文章编号:
1673-193X(2023)-06-0059-07
作者:
李树刚; 秦澳立; 龙航; 陈晨; 肖通; 仇悦
（1.西安科技大学 安全科学与工程学院，陕西 西安 710054；
2.中国煤炭工业协会西部矿井瓦斯智能抽采工程研究中心，陕西 西安 710054）
Author(s):
LI Shugang;  QIN Aoli;  LONG Hang;  CHEN Chen;  XIAO Tong;  QIU Yue
(1.School of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China;
2.Westen Coal Gas Intelligent Drainage Engineering Research Center,Ministry of Land and Resources of the People’s Republic of China,Xi’an Shaanxi 710054,China)
关键词:
有效应力; 瓦斯解吸-渗流; 煤体应变; 瓦斯抽采
Keywords:
effective stress;  gas desorption-seepage;  coal strain;  gas drainage
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2023.06.009
文献标志码:
A
摘要:
为探究不同有效应力对煤体瓦斯解吸-渗流特性及变形特征的影响规律，利用自主研发的煤体固气耦合实验装置，开展不同有效应力下煤体变形与瓦斯解吸-渗流同步实验。研究结果表明：随着有效应力增大，煤体瓦斯累计解吸量、解吸时间及解吸率均呈幂函数减小趋势，煤体解吸应变呈线性减小趋势；煤体渗透率及渗透率变化率随有效应力增大均呈正指数型增长趋势；瓦斯渗流过程导致煤体发生膨胀变形，且随着有效应力增加，煤体膨胀变形幅度在逐渐减小。研究结果可为煤体瓦斯高效抽采提供理论支撑。
Abstract:
In order to explore the influence of different effective stresses on the coal gas desorption-seepage characteristics and deformation characteristics,a self-developed coal solid-gas coupling experiment device was utilized to implement the synchronous experiments of coal deformation and gas desorption-seepage under different effective stresses.The results showed that all the coal gas cumulative desorption amount,desorption time and desorption rate present a power function decrease trend with the increase of effective stress,while the desorption strain of coal decreases linearly.Both the permeability and the permeability change rate increase exponentially with the increase of effective stress.The gas seepage process leads to the coal swelling deformation,and the extent of coal swelling deformation decreases gradually with the increase of effective stress.The research results can provide theoretical support for coal gas efficient drainage.

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相似文献/References:

[1]牛丽飞,曹运兴,石玢,等.潞安矿区煤层渗透率的各向异性特征实验研究[J].中国安全生产科学技术,2019,15(9):82.[doi:10.11731/j.issn.1673-193x.2019.09.013]
　NIU Lifei,CAO Yunxing,SHI Bin,et al.Experimental study on anisotropic characteristics of coal seam permeability in Lu’an mining area[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(6):82.[doi:10.11731/j.issn.1673-193x.2019.09.013]

备注/Memo

备注/Memo:
收稿日期： 2022-10-15
* 基金项目： 国家自然科学基金重点项目(51734007,52174207)；国家自然科学基金项目(52074217)；陕西省杰出青年项目(2020JC-48)
作者简介： 李树刚，博士，教授，主要研究方向为煤与瓦斯共采。
更新日期/Last Update: 2023-07-09