[1]徐 涛,冯文军,苏现波.煤矿井下水力压冲增透强化抽采技术试验研究[J].西安科技大学学报,2015,(03):303-306.
 XU Tao,FENG Wen-jun,SU Xian-bo.Experimental research on enhanced gas extraction application with hydraulic fracturing and flushing[J].Journal of Xi'an University of Science and Technology,2015,(03):303-306.
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煤矿井下水力压冲增透强化抽采技术试验研究(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2015年03期
页码:
303-306
栏目:
出版日期:
2015-06-30

文章信息/Info

Title:
Experimental research on enhanced gas extraction application with hydraulic fracturing and flushing
文章编号:
10.13800/j.cnki.xakjdxxb.2015.0305
作者:
徐 涛冯文军苏现波
1.重庆市能源投资集团科技有限责任公司,重庆 400060; 2.中煤科工集团 重庆研究院,重庆 400037; 3.河南理工大学 能源科学与工程学院,河南 焦作 454003
Author(s):
XU Tao1FENG Wen-jun 2SU Xian-bo3
1.Chongqing Energy Investment Group Science and Technology Co.,Ltd.,Chongqing 400060,China; 2.Chongqing Research Institute,China Coal Technology & Engineering Group,Chongqing 400037,China; 3.School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China
关键词:
水力压冲 增透 多级裂隙 强化抽采
Keywords:
hydraulic fracturing and flushing increasing permeability multiple step fracture enhanced extraction
分类号:
TD 712
文献标志码:
A
摘要:
新河煤矿为煤与瓦斯严重突出的基建矿井,煤层透气性低、瓦斯含量高。采用顶板抽放巷下向穿层钻孔进行预抽煤层瓦斯,抽采效率低,条带消突周期长。为提高新河煤矿抽采效果,先后尝试了水力压裂、水力冲孔增透措施,抽采效率有所改善,但持续时间短。在现场实践的基础上,提出了水力压冲一体化技术,以“水力压裂单元增透,水力冲孔出煤卸压”为技术思路,探讨了其技术流程、卸压增透及多级裂缝的形成机理,通过现场水力压冲增透抽采试验,结果表明,水力压裂后进行水力冲孔,瓦斯涌出严重,平均单孔涌出瓦斯1 485 m3,是未进行水力压裂的4.9倍,试验后最大日抽采纯量1 731 m3/d,平均623 m3/d,是试验前的2.9倍。
Abstract:
Xinhe mine is a coal and gas outburst constructing mine,characterized as its low permeability and high gas content.When the downward borehole in the roof tunnel is used to extract gas for safety of the later coal tunneling,the extraction efficiency is low and period of eliminating outburst is long.Therefore,in order to improve the extraction effect in Xinhe mine,hydraulic fracturing and hydraulic flushing are used to enhance the coal permeability,and then the extraction efficiency was increased,however,the effect can not maintain for long time.In this paper,the authors presented hydraulic and flushing integration technology based on practice,which relies on the technical ideas of hydraulic fracturing to increase the unit permeability and hydraulic flushing to rush out coal and release the pressure.Besides,the technological process was discussed,and the forming mechanism of pressure relief,permeability increase and multiple step fracture was clarified.The experiment of hydraulic fracturing and flushing showed that gas gushed seriously during hydraulic flushing and erupted 1 485 m3 per borehole,which is 4.9 times of before the hydraulic fracturing.The maximum extraction volume of pure gas is 1 731 m3/d and the average is 623 m3/d,which is 2.9 times of before the experiment.

参考文献/References:

[1] 孙炳兴,王兆丰,伍厚荣.水力压裂增透技术在瓦斯抽采中的应用[J].煤炭科学技术,2010,38(11):78-80. SUN Bing-xing,WANG Zhao-feng,WU Hou-rong.Hydraulic pressurized cracking and permeability improvement technology applied to gas drainage[J].Coal Science and Technology,2010,38(11):78-80. [2] 李全贵,翟 成,林柏泉,等.定向水力压裂技术研究与应用[J].西安科技大学学报,2011,31(6):739-739. LI Quan-gui,ZHAI Cheng,LIN Bai-quan,et al.Research and application of directional hydraulic fracturing technology[J].Journal of Xi'an University of Science and Technology,2011,31(6):739-739. [3]李杭州,张恩强.煤体裂纹水力致裂的扩展机理[J].西安科技大学学报,2003,23(4):372-374. LI Hang-zhou,ZHANG En-qiang.Mechanism of coal crack growth under water pressure[J].Journal of Xi'an University of Science and Technology,2003,23(4):372-374. [4] 王念红,陈祖国.穿层水力冲孔增透技术在严重突出煤层中的应用[J].煤炭科学技术,2011,39(5):61-63. WANG Nian-hong,CHEN Zu-guo.Application of permeability improvement technology with hydraulic flushing borehole passing through strata[J].Coal Science and Technology,2011,39(5):61-63.

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备注/Memo

备注/Memo:
收稿日期:2015-03-20 责任编辑:杨忠民 基金项目:教育部高校博士点基金(20134116120006) 通讯作者:徐 涛(1985-),男,河南商水人,工程师,E-mail:xuyoutao1985@163.com
更新日期/Last Update: 1900-01-01