Influence of Ground Stress on Coal Seam Gas Pressure and Gas Content

被引：3
|
作者：
Zhang, Xuebo [1 ,2 ,3 ]
Jia, Zhiwei [1 ,2 ,3 ]
机构：
[1] Collaborat Innovat Ctr Coal Safety Prod Henan Pro, Jiaozuo 45400, Peoples R China
[2] State Key Lab Cultivat Base Gas Geol & Gas Contro, Jiaozuo 45400, Peoples R China
[3] Henan Polytech Univ, Sch Safety Sci & Engn, Jiaozuo 45400, Peoples R China
来源：
FDMP-FLUID DYNAMICS & MATERIALS PROCESSING | 2019年 / 15卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Ground stress; coal seam porosity; gas pressure; gas content; stress concentration; PERMEABILITY; LAW;
D O I：
10.32604/fdmp.2019.04779
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of ground stress was quantitatively analyzed on coal seam gas pressure and gas content in this paper Mining activities in coal mine can result in stress concentration in the coal (rock) body around the mining space, but porosity of the coal seam would not change too much. Therefore, gas pressure and gas content in the coal seam are slightly affected. Studies showed that the free gas was gradually transformed into adsorbed gas, and the gas adsorption volume was small, and then gas pressure increases roughly linearly when the porosity decreased because of stress influence. Additionaly, when porosity of coal seam reduced to 40%, the amount of adsorbed gas accounted for no more than 10% of coal seam gas content, and the increase of gas pressure did not exceed 15% of the original gas pressure.
引用
收藏
页码：53 / 61
页数：9
相关论文
共 50 条
  • [41] Calculation Model and Rapid Estimation Method for Coal Seam Gas Content
    Wang, Fakai
    Zhao, Xusheng
    Liang, Yunpei
    Li, Xuelong
    Chen, Yulong
    [J]. PROCESSES, 2018, 6 (11):
  • [42] METHODS FOR THE EVALUATION OF SEAM GAS CONTENT FOR MEASUREMENTS ON COAL SAMPLES.
    Creedy, D.P.
    [J]. 1600, (03):
  • [43] Analysis of Geological Factors Affecting Coal Seam Gas Content and Prediction
    Dai, Linchao
    Wen, Guangcai
    Liu, Zhen
    Yang, Huiming
    Wang, Bo
    [J]. ADVANCES IN CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING, PTS 1-5, 2013, 634-638 : 3645 - 3649
  • [44] Effect of Ground Stress on Coal Seam Pressure Distribution by Shocking with High - pressure Air
    Gao Kun
    Wang Jiren
    Jia Baoshan
    Chen Jin
    [J]. PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON MINE SAFETY (2012), 2012, : 344 - 348
  • [45] Experimental study of the influence of gas pressure on the gas diffusion in coal
    Yang, Xin
    Zhang, Junying
    Wang, Gongda
    Ren, Tingxiang
    [J]. Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 2019, 48 (03): : 503 - 510
  • [46] Influence of Different Coal Seam Gas Pressures and their Pulse Characteristics on Coal-and-gas Outburst Impact Airflow
    Liang Cheng
    Jiang Xu
    Shoujian Peng
    Lei Qin
    Fazhi Yan
    Yang Bai
    Bin Zhou
    [J]. Natural Resources Research, 2022, 31 : 2749 - 2767
  • [47] Influence of Different Coal Seam Gas Pressures and their Pulse Characteristics on Coal-and-gas Outburst Impact Airflow
    Cheng, Liang
    Xu, Jiang
    Peng, Shoujian
    Qin, Lei
    Yan, Fazhi
    Bai, Yang
    Zhou, Bin
    [J]. NATURAL RESOURCES RESEARCH, 2022, 31 (05) : 2749 - 2767
  • [48] INFLUENCE OF PRESSURE ON GAS CONTENT OF ELECTROLYTES
    ALIEV, ZM
    SMIRNOV, VA
    [J]. JOURNAL OF APPLIED CHEMISTRY OF THE USSR, 1975, 48 (09): : 2138 - 2139
  • [49] Transient Pressure Analysis of a Multiple Fractured Well in a Stress-Sensitive Coal Seam Gas Reservoir
    Kou, Zuhao
    Wang, Haitao
    [J]. ENERGIES, 2020, 13 (15)
  • [50] Analytical modelling of coal failure in coal seam gas reservoirs in different stress regimes
    Reisabadi, Mohammadreza Zare
    Haghighi, Manouchehr
    Salmachi, Alireza
    Sayyafzadeh, Mohammad
    Khaksar, Abbas
    [J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2020, 128
12345