|本期目录/Table of Contents|

[1]吴爱军,王巧莉.薛湖矿二2煤顺层钻孔瓦斯抽放的数值模拟与分析[J].中国安全生产科学技术,2014,10(6):90-95.[doi:10.11731/j.issn.1673-193x.2014.06.014]
　WU Ai jun,WANG Qiao li.Numerical simulation and analysis on gas extraction with bedding drillings in the 22 coal seam of Xuehu Mine[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2014,10(6):90-95.[doi:10.11731/j.issn.1673-193x.2014.06.014]
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薛湖矿二2煤顺层钻孔瓦斯抽放的数值模拟与分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
10
期数:
2014年6期
页码:
90-95
栏目:
职业安全卫生管理与技术
出版日期:
2014-06-30

文章信息/Info

Title:
Numerical simulation and analysis on gas extraction with bedding drillings in the 22 coal seam of Xuehu Mine
文章编号:
20140614
作者:
吴爱军; 王巧莉
（西南科技大学 环境与资源学院， 四川 绵阳 621010）
Author(s):
WU Aijun;  WANG Qiaoli
(School of Environment & Resource, Southwest University of Science & Technology, Mianyang Sichuan 621010, China)
关键词:
瓦斯抽采; 渗流场; 数值模拟; 顺层钻孔
Keywords:
gas extraction;  seepage field;  numerical simulation;  bedding drilling
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2014.06.014
文献标志码:
A
摘要:
针对我国煤矿绝大部分煤层属于渗透率低，地质条件复杂、瓦斯抽采效果差的特点，运用了FLUENT仿真软件，结合渗流力学理论，以薛湖矿二2煤层为工程背景，模拟顺煤层钻孔抽采的煤层压力、煤层渗透率、抽采负压、钻孔直径、抽采时间等因素，分析顺煤层钻孔瓦斯抽采规律，为类似顺煤层钻孔抽采设计提供科学依据；通过三种尺寸顺层钻孔工业实验，并从施工难易程度和经济效果以及抽放率的角度，确立了采用Φ75mm钻孔的抽放工艺；同时采用高压注水增大煤层透气性的方式进一步提高煤层瓦斯的抽放量。
Abstract:
According to the reality that most of the coal seams in China are lowpermeability coal seams, the geology condition is complicated and the gas extraction rate is low, in this article, by using FLUENT software, combining with the fluent seepage theory, and taking No.2 coal seam of Xuehu Mine as the engineering background, the coal seam pressure, coal seam permeability, negative pressure of gas drainage, borehole diameter, gas drainage time in gas drainage of bedding drilling in coal seam were simulated, and the rules of gas drainage in coal seam were analyzed, which can provide scientific basis to the gas drainage in similar coal seam. Through the industrial experiments of bedding drilling under three dimensions, the 75 borehole drainage process was established by the angle of the ease of construction, economic effect and the drainage rate. At the same time, the highpressure injection technology was applied to increase gas permeability of coal seam and to further improve the drainage volume.

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备注/Memo

备注/Memo:
西南科技大学博士研究基金项目(12zx7112)
更新日期/Last Update: 2014-07-28