Technology feasibility of gas drainage with comb-shaped long borehole in floor instead of translayer borehole

LI Hong; LIU Mingju; HAO Guangsheng; DENG Qigen; DONG Yanjun

doi:10.3969/j.issn.1001-1986.2019.06.006

Volume 47 Issue 6

Dec. 2019

Turn off MathJax

Article Contents

Abstract

References

COAL GEOLOGY & EXPLORATION > 2019 > 47(6): 32-38. > DOI: 10.3969/j.issn.1001-1986.2019.06.006

LI Hong, LIU Mingju, HAO Guangsheng, DENG Qigen, DONG Yanjun. Technology feasibility of gas drainage with comb-shaped long borehole in floor instead of translayer borehole[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(6): 32-38. DOI: 10.3969/j.issn.1001-1986.2019.06.006

Citation:

PDF (594 KB)

Technology feasibility of gas drainage with comb-shaped long borehole in floor instead of translayer borehole

1. School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
2. Chongqing Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Chongqing 400037, China;
3. Shanxi Jincheng Anthracite Mining Group Co., Ltd., Jincheng 048006, China

Funds:

National Natural Science Foundation of China(51774116)

More Information

Received Date: June 09, 2019
Published Date: December 24, 2019

Graphical Abstract

Abstract

Abstract

Drainage technology of translayer borehole in floor roadway and directional long hole are the most important gas control measures in high gas and outburst-prone mining face at present. The coal seam in Zhaozhuang mine has the characteristics of being soft and low gas permeability. It is difficult to drill and form holes in a coal seam. For gas control, the major method is to drill a translayer borehole to eliminate gas outburst, supplemented by in-seam gas drainage boreholes. However, there are shortcomings such as large engineering volume, long construction period and high cost of drilling in floor rock roadway. The directional long borehole has technical defects such as uneven drainage and insufficient coverage. In order to compare and investigate the drainage effects of the long borehole and the borehole in the floor rock roadway, the drainage effect of two gas control methods in mining face 1307 was investigated. The results show that under the same mining conditions and coal body range, the total amount of gas extraction by five comb-shaped long boreholes accounted for 75.4% of the total gas drainage of the translayer boreholes through the floor, while the economic input of the comb-shaped long boreholes accounted for only 29.2% of the translayer boreholes in the floor. In the case that the extraction effect is basically the same, the comprehensive economic benefit of the comb-shaped long hole is higher. From this it is concluded that the gas drainage technology of the comb-shaped long boreholes to replace the translayer boreholes is feasible. The study provides a practical reference for the technical feasibility of substitution of the translayer boreholes with comb-shaped boreholes, a more economical and feasible treatment scheme for the gas control in gas outburst-prone coal mines with soft and low permeability coal.
- translayer borehole,
- comb-shaped long borehole,
- floor rock roadway,
- branch borehole,
- economic benefits,
- Zhaozhuang coal mine,
- south of Qinshui basin

FullText(HTML)

References (15)

References

[1]	袁亮,刘泽功. 淮南矿区开采煤层顶板抽放瓦斯技术的研究[J]. 煤炭学报,2003,28(2):149-152. YUAN Liang,LIU Zegong. Study on the technique of roof gas drainage from mine coal seam in Huainan mine area[J]. Journal of China Coal Society,2003,28(2):149-152.
[2]	李宏,刘明举,高宏. 高突矿井大采高工作面瓦斯抽采技术及实践[J]. 中国安全生产科学技术,2019,15(6):99-104. LI Hong,LIU Mingju,GAO Hong. Technology of gas extraction in working face with large mining height of high outburst mine and its practice[J]. Journal of Safety Science and Technology,2019,15(6):99-104.
[3]	NOACK K. Control of gas emissions in underground coal mines[J]. International Journal of Coal Geology,1998,35:57-82.
[4]	WANG Haifeng,CHENG Yuanping,WANG Lei. Regional gas drainage techniques in Chinese coal mines[J]. Interna-tional Journal of Mining Science and Technology,2013,22:873-878.
[5]	方新秋,耿耀强,王明. 高瓦斯煤层千米定向钻孔煤与瓦斯共采机理[J]. 中国矿业大学学报,2012,41(6):885-892. FANG Xinqiu,GENG Yaoqiang,WANG Ming. Kilometer directional drilling:Simultaneous extraction of coal and gas from a high gas coal seam[J]. Journal of China University of Mining & Technology,2012,41(6):885-892.
[6]	李泉新,石智军,史海岐. 煤矿井下定向钻进工艺技术的应用[J]. 煤田地质与勘探,2014,42(2):85-88. LI Quanxin,SHI Zhijun,SHI Haiqi. The application of directional drilling technology in coal mine[J]. Coal Geology & Exploration,2014,42(2):85-88.
[7]	张建国,林柏泉,翟成. 穿层钻孔高压旋转水射流割缝增透防突技术研究与应用[J]. 采矿与安全工程学报,2012,29(3):411-415. ZHANG Jianguo,LIN Baiquan,ZHAI Cheng. Research on outburst prevention technology of high pressure hydrau-lic-cutting seam through layer and its application[J]. Journal of Mining & Safety Engineering,2012,29(3):411-415.
[8]	周红星,程远平,刘洪永,等. 突出煤层穿层钻孔群增透增流作用机制[J]. 采矿与安全工程学报,2011,28(4):618-622. ZHOU Hongxing,CHENG Yuanping,LIU Hongyong,et al. Permeability and fluidity improvement mechanism of crossing borehole group in outburst coal seam[J]. Journal of Mining & Safety Engineering,2011,28(4):618-622.
[9]	张英华,倪文,尹根成,等. 穿层孔水压爆破法提高煤层透气性的研究[J]. 煤炭学报,2004,29(3):298-302. ZHANG Yinghua,NI Wen,YIN Gencheng,et al. Study on improving the penetrability of coal seam with the water pressure blasting in the through beds hole[J]. Journal of China Coal Society,2004,29(3):298-302.
[10]	WANG Liang,CHENG Yuanping,GE Chungui,et al. Safety technologies for the excavation of coal and gas outburst-prone coal seams in deep shafts[J]. International Journal of Rock Mechanics and Mining Sciences,2012,57:24-33.
[11]	姚宁平. 我国煤矿井下近水平定向钻进技术的发展[J]. 煤田地质与勘探,2008,36(4):78-80. YAO Ningping. Development trend of nearly horizontal directional drilling technology in coal mines of China[J]. Coal Geology & Exploration,2008,36(4):78-80.
[12]	方俊,李泉新,许超,等. 松软突出煤层瓦斯抽采钻孔施工技术及发展趋势[J]. 煤炭科学技术,2018,45(5):130-138. FANG Jun,LI Quanxin,XU Chao,et al. Construction technology and development tendency of gas drainage borehole in soft and outburst seam[J]. Coal Science and Technology,2018,45(5):130-138.
[13]	冯达晖. 煤矿井下分段水力压裂梳状定向长钻孔钻进技术研究[J]. 探矿工程(岩土钻掘工程),2018,45(5):8-12. FENG Dahui. Research on the technology of comb-shaped long directional hole drilling by segmented hydraulic fracturing in underground coal mine[J]. Exploration Engineering(Rock & Soil Drilling and Tunneling),2018,45(5):8-12.
[14]	姚宁平,张杰,张国亮,等. 晋城矿区井下梳状钻孔瓦斯抽采技术体系[J]. 煤炭科学技术,2015,43(2):88-95. YAO Ningping,ZHANG Jie,ZHANG Guoliang,et al. System of gas drainage technology of comb-like directional drilling in Jincheng mining area[J]. Coal Science and Technology,2015,43(2):88-95.
[15]	王建强,张杰,杜利猛. 赵庄矿松软煤层梳状钻孔瓦斯抽采应用研究[J]. 煤矿安全,2016,47(10):133-136. WANG Jianqiang,ZHANG Jie,DU Limeng. Application research of gas drainage by comb-like drilling in soft coal seam of Zhaozhuang coal mine[J]. Safety in Coal Mines,2016,47(10):133-136.

[1]	GAO Mingzhong, SONG Jie, CUI Pengfei, LI Yongcheng, WANG Zhipeng, ZHOU Xuemin, LI Ju, HAO Zongxin, HAO Haichun. The evolution law of gas pressure in pressure-preserved coal cores and its calculation method[J]. COAL GEOLOGY & EXPLORATION, 2025, 53(4): 1-13. DOI: 10.12363/issn.1001-1986.24.09.0613
[2]	GAO Mingzhong, SONG Jie, CUI Pengfei, LI Yongcheng, WANG Zhipeng, ZHOU Xuemin, LI Ju, HAO Zongxin, HAO Haichun. The evolution law of gas pressure in pressure-preserved coal cores and its calculation method[J]. COAL GEOLOGY & EXPLORATION.
[3]	GUO Da, ZHANG Yiwei, WANG Dingming, FANG Xin, YANG Bengao, GUO Lihua, HOU Lele, ZHAO Xiang. Closure trajectory model of pressure-preserved controller for coring in coal seam surface well[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(8): 98-106. DOI: 10.12363/issn.1001-1986.23.06.0340
[4]	WANG Tianyu, LI Jianan, ZHANG Yiwei, LI Ju, XIE Heping. Sealing performance analysis and structure optimization of pressure-preserved controller for pressure-preserved coring in deep coal mine[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(8): 88-97. DOI: 10.12363/issn.1001-1986.22.12.0961
[5]	CHU Peng, SHANG Delei, LI Jianhua, MA Shaoming, ZHU Guodong, CUI Pengfei. Influence of gas components on the determination of gas pressure in coal seams under in-situ pressure-preserved coring[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(8): 79-87. DOI: 10.12363/issn.1001-1986.22.12.0939
[6]	LIANG Weiwei, LI Cong, LIU Guikang, YOU Zhenxi, SHI Xiaojun. Pressure-bearing characteristics of pressure-preserved controllers under deep in-situ temperature and pressure conditions[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(8): 68-78. DOI: 10.12363/issn.1001-1986.23.07.0407
[7]	LIU Guikang, LI Cong, YOU Zhenxi, HU Yunqi, HUANG Wei, WANG Ruize, XU Meng. Principle and technology of in-situ magnetically controlled multidirectional pressure-preserved coring in the coal mine[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(8): 13-20. DOI: 10.12363/issn.1001-1986.22.12.0935
[8]	XIE Heping, CUI Pengfei, SHANG Delei, FAN Dong, CHEN Ling, YANG Mingqing, DU Lin, GAO Mingzhong. Research advances on the in-situ pressure-preserved coring and gas parameter determination for deep coal seams[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(8): 1-12. DOI: 10.12363/issn.1001-1986.23.02.0075
[9]	LEI Wenjie, LEI Jianwei, YANG Hongmin, WANG Zhaofeng. Borehole gas pressure build-up to evaluate the permeability of coal seam[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(6): 28-33. DOI: 10.3969/j.issn.1001-1986.2017.06.005
[10]	WEI Chunfu, LI Huamin, YUAN Ruifu. Gas pressure effect in the process of coal and gas outburst[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(6): 24-28. DOI: 10.3969/j.issn.1001-1986.2014.06.005

Cited By

Get Citation

PDF

XML

Article Metrics

Article views (127) PDF downloads (12)

Technology feasibility of gas drainage with comb-shaped long borehole in floor instead of translayer borehole

Abstract

References

Related Articles

Catalog

Article Metrics

Related

Technology feasibility of gas drainage with comb-shaped long borehole in floor instead of translayer borehole

Abstract

References

Related Articles

Catalog

Article Metrics

Related

Export File

Citation

Format

Content