[1]刘雪莉,游继军.深水平强突出煤层石门揭煤技术的探讨[J].武汉工程大学学报,2018,40(03):306-309.[doi:10. 3969/j. issn. 1674?2869. 2018. 03. 015]
LIU Xueli,YOU Jijun.Investigation of Rock Cross-Cut Coal Uncovering Technology in Deep Horizon Coal Mine with Strong Gas Outburst Risk[J].Journal of Wuhan Institute of Technology,2018,40(03):306-309.[doi:10. 3969/j. issn. 1674?2869. 2018. 03. 015]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]
- 卷:
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40
- 期数:
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2018年03期
- 页码:
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306-309
- 栏目:
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资源与土木工程
- 出版日期:
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2018-06-26
文章信息/Info
- Title:
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Investigation of Rock Cross-Cut Coal Uncovering Technology in Deep Horizon Coal Mine with Strong Gas Outburst Risk
- 文章编号:
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20180315
- 作者:
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刘雪莉1; 游继军2
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1. 安徽新华学院土木与环境工程学院,安徽 合肥 230031;2. 淮南矿业集团,安徽 淮南 232001
- Author(s):
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LIU Xueli1; YOU Jijun2
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1. School of Civil and Environmental Engineering, Anhui Xinhua University, Hefei 230031, China;2. Huainan Mining Group, Huainan 232001, China
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- 关键词:
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突出煤层; 石门揭煤; 水力压冲; 增透
- Keywords:
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outburst coal seam rock cross-cut coal uncovering; hydraulic pressure rushing; permeability increasing
- 分类号:
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TD712
- DOI:
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10. 3969/j. issn. 1674?2869. 2018. 03. 015
- 文献标志码:
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A
- 摘要:
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采用水力压冲技术,在区域防突措施钻孔施工前先对原始煤体进行水力掏穴,冲出大量煤体和瓦斯,对原始煤体进行卸压增透,以增加煤层的透气性系数,再对卸压后的煤体施工区域防突措施钻孔。将此技术应用在新庄孜煤矿-812 m南边界石门揭B11b煤层中,使得B11b煤层原始瓦斯压力由2.8 MPa降到1.2 MPa,原始瓦斯含量由12.31 m3/t降到8.5 m3/t,煤层透气性系数由原来的0.004 83 m2/(MPa2·d)增加到0.683 1 m2/(MPa2·d),水力压冲共计冲出煤粉量285 t,区域措施钻孔瓦斯抽采浓度达35%,瓦斯抽采总量135 316.8 m3,抽采率63.9%,既缩短了揭煤工期,又保证了揭煤施工过程中的安全。
- Abstract:
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We adopted the hydraulic pressure rushing technology in -812 m southern border rock cross-cut of Xinzhuangzi Coal Mine,in which the water with high pressure was used to press the original coal body before the construction of the regional drilling hole,rushing out a large amount of coal and gas,relieving the pressure of original coal seam and improving its permeability. As a result, the original gas pressure of B11b coal reduced from 2.8 MPa to 1.2 MPa,the original gas content decreased from 12.31 m3/t to 8.5 m3/t,and the permeability coefficient of coal seam increased from 0.004 83 m2/(MPa2·d) to 0.683 1 m2/(MPa2·d). In the process of hydraulic pressure rushing,285 t of coal powders were rushed out,the gas concentration reached 35% by drainage and extraction during regional measures,63.9% of gas was collected with the total amount of 135 316.8 m3,The hydraulic pressure rushing technology not only shortens the time but also guarantees the safety in the process of uncovering coal.
参考文献/References:
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备注/Memo
- 备注/Memo:
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收稿日期:2017-12-20基金项目:安徽新华学院校级科研重点项目(2017zr007)作者简介:刘雪莉,硕士,讲师。E-mail:[email protected]引文格式:刘雪莉,游继军. 深水平强突出煤层石门揭煤技术探讨[J]. 武汉工程大学学报,2018,40(3):306-309,324.
更新日期/Last Update:
2018-06-28