[1]张俭让,陈 伟,张 荃.高抽巷瓦斯抽采对工作面安全开采的影响分析[J].西安科技大学学报,2016,(01):13-18.
 ZHANG Jian-rang,CHEN Wei,ZHANG Quan.Safety mining in working face with high drainage roadway[J].Journal of Xi'an University of Science and Technology,2016,(01):13-18.
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高抽巷瓦斯抽采对工作面安全开采的影响分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2016年01期
页码:
13-18
栏目:
出版日期:
2016-02-28

文章信息/Info

Title:
Safety mining in working face with high drainage roadway
文章编号:
10.13800/j.cnki.xakjdxxb.2016.0103
作者:
张俭让12陈 伟12张 荃12
1.西安科技大学 能源学院,陕西 西安 710054; 2.教育部 西部矿井开采及灾害防治重点实验室,陕西 西安 710054
Author(s):
ZHANG Jian-rang12CHEN Wei12ZHANG Quan12
1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an 710054,China
关键词:
高抽巷 采空区 自燃危险性 数值模拟
Keywords:
high drainage roadway goaf spontaneous combustion risk numerical simulation
分类号:
TD 712
文献标志码:
A
摘要:
为了探究高抽巷瓦斯抽采对工作面安全开采的影响,依据401101工作面的巷道布置情况,建立了工作面与采空区的数学物理模型。应用Fluent软件对工作面在有无高抽巷及高抽巷不同抽采能力下采空区的氧浓度以及瓦斯浓度分布规律进行了数值模拟,获得了上隅角瓦斯浓度与采空区氧浓度分布情况。模拟结果与现场实测数据表明:高抽巷能有效解决工作面上隅角瓦斯超限问题; 随高抽巷抽采瓦斯能力的增大,上隅角瓦斯浓度不断降低,但采空区氧化升温带的宽度和深度会增加,使得煤自燃危险性和防灭火压力增大; 综合考虑防止瓦斯超限及采空区煤自燃,并保证工作面安全开采,高抽巷瓦斯抽采能力以0.25~0.3为宜。
Abstract:
To study the influence of high drainage roadway to safety mining in working face,the mathematical-physical model of working face and goaf was established according to the roadway layout in 401101 Face.A numerical simulation on the rules of the oxygen concentration field and gas concentration distribution in both with and without high drainage roadway conditions at the working face and under different pumping capacity was carried out by the FLUENT software.The distribution of gas concentration at the upper corner and oxygen concentration in goaf were obtained.The simulation results showed that:the gas override problem could be effectively solved by high drainage roadway.And along with the increase of the drainage capacity factor,the upper corner gas concentration reduced continually; while the width and depth of the oxidization and heat accumulation zone both rose,making the pressure of fire prevention and extinguishing increases.Comprehensive consideration of preventing gas override and coal spontaneous combustion in goaf,and ensuring safety mining in working face,the optimized factor of drainage capacity was designated at 0.25~0.3.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-03-12 责任编辑:高 佳 通讯作者:张俭让(1963-),男,陕西岐山人,教授,E-mail:zhaangjr@sohu.com
更新日期/Last Update: 1900-01-01