Experimental study on the effect of gas pressure gradient on coal permeability

LI Bo; SUN Donghui; WEI Jianping; ZHANG Lulu

doi:10.3969/j.issn.1001-1986.2018.01.006

Volume 46 Issue 1

Feb. 2018

Turn off MathJax

Article Contents

Abstract

References

COAL GEOLOGY & EXPLORATION > 2018 > 46(1): 35-40. > DOI: 10.3969/j.issn.1001-1986.2018.01.006

LI Bo, SUN Donghui, WEI Jianping, ZHANG Lulu. Experimental study on the effect of gas pressure gradient on coal permeability[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(1): 35-40. DOI: 10.3969/j.issn.1001-1986.2018.01.006

Citation:

PDF (355 KB)

Experimental study on the effect of gas pressure gradient on coal permeability

1. State Key Laboratory Cultivation Base for Gas Geology and Gas Control (Henan Polytechnic University), Jiaozuo 454000, China;
2. Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Langfang 065201, China;
3. State and Local Joint Engineering Laboratory for Gas Drainage & Ground Control of Deep Mines, Henan Polytechnic University, Jiaozuo 454003 China;
4. Collaborative Innovation Center of Coal Work Safety, Henan Province, Henan Polytechnic University, Jiaozuo 454000, China

Funds:

The National Science Foundation for Young Scholars of the National Natural Science Foundation of China(51604096)

More Information

Received Date: December 12, 2016
Published Date: February 24, 2018

Graphical Abstract

Abstract

Abstract

In order to study the relationship between coal permeability and gas pressure gradient, a mathematical model of coal permeability and gas pressure gradient is established in consideration of the coal body adsorption deformation, and the seepage experiment was carried out under the condition of constant temperature. The seepage experiment of coal samples were carried out under condition of different adsorption equilibrium pressures with the same pressure gradient and the same adsorption equilibrium pressure with different pressure gradients. Research results show that:Under the condition of lower pore pressure, the permeability of coal decreases with the increase of adsorption equilibrium pressure; the dynamic evolution model of permeability well describes the gas flow pattern in the coal seam gas drainage process. The research results can provide some theoretical support for the coal mine gas control and drainage work, which has certain guiding and practical significance.
- permeability,
- gas pressure gradient,
- gas,
- adsorption equilibrium

FullText(HTML)

References (18)

References

[1]	王永龙,王振锋,孙玉宁,等. 煤壁应力峰值动态移动诱发封孔漏气机理研究[J]. 安全与环境学报,2016,16(5):129-134. WANG Yonglong,WANG Zhenfeng,SUN Yuning,et al. Study on the mechanism of coal wall stress peak dynamic shift induced sealing holes[J]. Chinese Journal of Safety and Environment, 2016,16(5):129-134.
[2]	谢广祥,胡祖祥,王磊. 深部高瓦斯工作面煤体采动扩容特性研究[J]. 煤炭学报,2014,39(1):91-96. XIE Guangxiang,HU Zuxiang,WANG Lei. Study on the expansion characteristics of coal mining in deep high gas working face[J]. Journal of China Coal Society,2014,39(1):91-96.
[3]	胡祖祥,谢广祥,姜福兴,等. 深部工作面煤体扩容影响因素及扩容预测[J]. 采矿与安全工程学报,2014,31(1):134-138. HU Zuxiang,XIE Guangxiang,JIANG Fuxing,et al. Influencing factors of coal body capacity expansion in deep working face and prediction of capacity expansion[J]. Chinese Journal of Mining and Safety Engineering,2014,31(1):134-138.
[4]	谢广祥,殷志强,胡祖祥,等. 深井瓦斯煤层采动扩容致灾力学机理[J]. 煤炭学报,2015,40(1):24-29. XIE Guangxiang,YIN Zhiqiang,HU Zuxiang,et al. Mechanical mechanism of disaster caused by coal mining in deep mine[J]. Journal of China Coal Society,2015,40(1):24-29.
[5]	袁梅,李波波,许江,等. 不同瓦斯压力条件下含瓦斯煤的渗透特性试验研究[J]. 煤矿安全,2011,42(3):1-4. YUAN Mei,LI Bobo,XU Jiang,et al. Experimental study on permeability of coal containing gas under different gas pressure[J]. Chinese Journal of Coal Mine Safety,2011,42(3):1-4.
[6]	曹树刚,郭平,李勇,等. 瓦斯压力对原煤渗透特性的影响[J]. 煤炭学报,2010,35(4):595-599. CAO Shugang,GUO Ping,LI Yong,et al. Effect of gas pressure on permeability of coal[J]. Journal of China Coal Society,2010, 35(4):595-599.
[7]	李佳伟,刘建锋,张泽天,等. 瓦斯压力下煤岩力学和渗透特性探讨[J]. 中国矿业大学学报,2013,42(6):954-960. LI Jiawei,LIU Jianfeng,ZHANG Zetian,et al. Mechanical and seepage characteristics of coal and rock under gas pressure[J]. Journal of China University of Mining and Technology,2013, 42(6):954-960.
[8]	张朝鹏,高明忠,张泽天,等. 不同瓦斯压力原煤全应力应变过程中渗透特性研究[J]. 煤炭学报,2015,40(4):836-842. ZHANG Chaopeng,GAO Mingzhong,ZHANG Zetian,et al. Study on seepage characteristics of coal at different gas pressure under full stress and strain[J]. Journal of China Coal Society, 2015,40(4):836-842.
[9]	陶云奇,许江,程明俊,等. 含瓦斯煤渗透率理论分析与试验研究[J]. 岩石力学与工程学报,2009,28(增刊2):3363-3370. TAO Yunqi,XU Jiang,CHENG Mingjun,et al. Theoretical analysis and experimental study on permeability of coal containing gas[J]. Chinese Journal of rock mechanics and Engineering, 2009,28(S2):3363-3370.
[10]	许江,曹偈,李波波,等. 煤岩渗透率对孔隙压力变化响应规律的试验研究[J]. 岩石力学与工程学报,2013,32(2):225-230. XU Jiang,CAO Ji,LI Bobo,et al. Experimental study on the response of coal rock permeability to pore pressure change[J]. Chinese Journal of Rock Mechanics and Engineering,2013, 32(2):225-230.
[11]	王刚,程卫民,郭恒,等. 瓦斯压力变化过程中煤体渗透率特性的研究[J]. 采矿与安全工程学报,2012,29(5):735-739. WANG Gang,CHENG Weimin,GUO Heng,et al. Study on gas pressure change process of coal permeability characteristics[J]. Chinese Journal of Mining and Safety Engineering,2012,29(5):735-739.
[12]	王刚,程卫民,孙路路,等. 煤层瓦斯压力及压力梯度影响因素的分析[J]. 煤矿安全,2013,44(2):152-156. WANG Gang,CHENG Weimin,SUN Lulu,et al. Analysis of influencing factors of coal seam gas pressure and pressure gradient[J]. Chinese Journal of Coal Mine Safety,2013,44(2):152-156.
[13]	李祥春,郭勇义,吴世跃. 煤吸附膨胀变形与孔隙率、渗透率关系的分析[J]. 太原理工大学学报,2005,36(3):264-266. LI Xiangchun,GUO Yongyi,WU Shiyue. Analysis of the relationship between the swelling deformation of coal adsorption and the porosity and permeability[J]. Journal of Taiyuan University of Technology,2005,36(3):264-266.
[14]	谈慕华,黄蕴元. 表面物理化学[M]. 北京:中国建筑工业出版社,1985.
[15]	A E薛定谔,王鸿勋,张朝琛,等. 多孔介质中的渗流物理[M]. 北京:石油工业出版社,1982:141-173.
[16]	吴世跃,赵文,郭勇义. 煤岩体吸附膨胀变形与吸附热力学的参数关系[J]. 东北大学学报,2005,26(7):683-686. WU Shiyue,ZHAO Wen,GUO Yongyi. Relationship between adsorption swelling deformation and thermodynamic parameters of coal and rock mass[J]. Chinese Journal of Northeastern University,2005,26(7):683-686.
[17]	CHILINGAR G V. Relationship between porosity,permeability, and grain-size distribution of sands and sandstones[J]. Developments in Sedimentology,1964,1:71-75.
[18]	魏建平,秦恒洁,王登科,等. 含瓦斯煤渗透率动态演化模型[J]. 煤炭学报,2015,40(7):1555-1561. WEI Jianping,QIN Hengjie,WANG Dengke,et al. Dynamic evolution model of gas containing coal permeability[J]. Journal of China Coal Society,2015,40(7):1555-1561.

[1]	ZHOU Lang, MA Zhenqian, HUANG Qingrong, SHUAI Yunlin, ZHANG Jimin, LIU Rongke. A nanoindentation-based study on the micromechanical properties of red shales[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(11): 96-107. DOI: 10.12363/issn.1001-1986.24.06.0370
[2]	OUYANG Zhenhua, LIU Yang, LI Chunlei, SHI Qingwen, LI Wenshuai, YI Haiyang, QIN Hongyan, ZHANG Ningbo. An experimental study of the evolutionary patterns of mechanical properties of coals under multiple mining disturbances[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(10): 72-84. DOI: 10.12363/issn.1001-1986.24.04.0274
[3]	ZHAO Huanshuai, PAN Yongtai, QIAO Xin, WANG Xingyu, YU Chao, HUANG Jiacheng. Fracturing evolutionary law and energy utilization efficiency of green sandstones under different loading rates[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(6): 69-78. DOI: 10.12363/issn.1001-1986.24.03.0152
[4]	ZHANG Heyong, WANG Xuedong, ZHU Yongdong, WANG Haipeng, QI Lihui. Mechanical properties and strength deterioration mechanism of soil in inner dump of open-pit coal mine under the action of freeze-thaw cycles[J]. COAL GEOLOGY & EXPLORATION.
[5]	ZHANG Heyong, WANG Xuedong, ZHU Yongdong, WANG Haipeng, QI Lihui. Mechanical properties and strength deterioration mechanism of soil in inner dump of open-pit coal mine under the action of freeze-thaw cycles[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(11): 119-131. DOI: 10.12363/issn.1001-1986.23.04.0210
[6]	HU Xin, SUN Qiang, YAN Changgen, ZHAO Chunhu, WANG Shaofei. Deterioration characteristics of water-rock interaction on combustion metamorphic rocks in northern Shaanxi[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(4): 76-84. DOI: 10.12363/issn.1001-1986.22.06.0496
[7]	ZHANG Yin, LI Zhe, SONG Shikang, ZHAO Yi, LI Hao. Mechanical properties and acoustic emission characteristics of sandstone under natural and saturated conditions[J]. COAL GEOLOGY & EXPLORATION, 2022, 50(2): 98-105. DOI: 10.12363/issn.1001-1986.21.06.0341
[8]	LI Qiang, WANG Yansen, WANG Chunlin, XU Shengji, FAN Zhiqiang. Performance deterioration law of retarded cement slurry and its mixed slurry in freezing borehole mud replacement[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(5): 182-189. DOI: 10.3969/j.issn.1001-1986.2021.05.020
[9]	DENG Niandong, YAO Ting, SHANG Hui, LIU Donghai. Surface subsidence law caused by fully mechanized caving mining under railway[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(6): 121-125,134. DOI: 10.3969/j.issn.1001-1986.2019.06.019
[10]	XU Shuanhai, TIAN Yanzhe, LI Ning. Variation of physical and mechanical characteristics of coarse sandstone during freezing and thawing cycles[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(5): 102-107. DOI: 10.3969/j.issn.1001-1986.2016.05.019

Cited By

Cited by

Periodical cited type(3)

1.	梁艳玲，霍润科，宋战平，穆彦虎，秋添，宋子羿. 基于矿物溶解理论的砂岩化学损伤动态模型. 材料导报. 2024(08): 163-169 .
2.	龙钰，韩文梅，关学锋，何天明，杜龙飞，葛彦鑫. 酸性矿井水作用下砂岩冲击特性变化分析. 中北大学学报(自然科学版). 2022(05): 460-466 .
3.	王腾飞，蔺文豪，秦哲，王彤彤. 不同水化学条件下循环侵水砂岩劣化规律研究. 地质与勘探. 2022(06): 1281-1290 .

Other cited types(3)

Get Citation

PDF

XML

Article Metrics

Article views (132) PDF downloads (9) Cited by(6)

Experimental study on the effect of gas pressure gradient on coal permeability

Abstract

References

Related Articles

Cited by

Periodical cited type(3)

Other cited types(3)

Catalog

Article Metrics

Related

Experimental study on the effect of gas pressure gradient on coal permeability

Abstract

References

Related Articles

Cited by

Periodical cited type(3)

Other cited types(3)

Catalog

Article Metrics

Related

Export File

Citation

Format

Content