Numerical simulation study on “three zones” of spontaneous combustion in goaf by “110 construction method” under different ventilation modes

WEN Hu; MENG Yao; FAN Shixing; XU Yiming; YE Chunhui; TONG Xiaozhang; SONG Jinsuo

doi:10.13347/j.cnki.mkaq.20230730

Safety in Coal Mines > 2024 > 55(4): 88-97. > DOI: 10.13347/j.cnki.mkaq.20230730

WEN Hu, MENG Yao, FAN Shixing, et al. Numerical simulation study on “three zones” of spontaneous combustion in goaf by “110 construction method” under different ventilation modes[J]. Safety in Coal Mines, 2024, 55（4）: 88−97. DOI: 10.13347/j.cnki.mkaq.20230730

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Numerical simulation study on “three zones” of spontaneous combustion in goaf by “110 construction method” under different ventilation modes

WEN Hu^{1, 2,},
MENG Yao^{1, 2},
FAN Shixing^{1, 2},
XU Yiming^{1, 2},
YE Chunhui³,
TONG Xiaozhang³,
SONG Jinsuo^{1, 2}

1.
College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
2.
Key Laboratory of Western Mine Exploitation and Hazard Prevention, Ministry of Education, Xi’an 710054, China
3.
Huainan Mining Group Co., Ltd., Huainan 232000, China

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Received Date: May 25, 2023
Revised Date: August 05, 2023

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Abstract

Abstract

In order to explore the distribution characteristics of “three zones” of spontaneous combustion in goaf under different ventilation modes, based on the engineering background of “two into one” ventilation mode at 1532 (1) working face of Gubei Mine, and based on airflow control equation, concentration component equation and energy equation, by using the Fluent numerical simulation method, the multi-physical coupling numerical model of coal spontaneous combustion and the real-time dynamic advance model of working face are established, and the distribution characteristics of “three zones” of spontaneous combustion in goaf by the “110 construction method” under three ventilation modes are simulated. The results show that with the continuous advance of the working face, under the conditions of ventilation mode 1 (air intake from the machine side and gob-side entry retaining, return air along the return air lane) and ventilation mode 2 (air intake from the machine side and along the return lane, and return air in gob-side entry retaining), the oxidation spontaneous combustion belt in the goaf is evenly distributed in the side of the belt machine, the middle of the working face and the side of the lane, and the oxygen concentration distribution is not much different. About 50 days after mining, the highest temperature appeared in the deep side of the transportation lane, and the temperature at this position did not increase with the continuous advance of the working face. Under the condition of ventilation mode 3 (air intake in gob-side entry retaining and return air lane, and air return at the side of the machine lane), the oxidation spontaneous combustion belt at the side of the goaf retaining roadway becomes 2-4 times wider, the middle of the working face and the side of the belt conveyor become obviously narrow, the oxygen volume fraction at the side of the belt conveyor in the goaf is lower, the oxygen concentration at the side of the belt conveyor is higher, and the air leakage increases significantly. The high temperature location of goaf mainly appears in the side of the stop line of 1532(1) working face, and the temperature of goaf here is the highest after 50 days of working face. In summary, combined with the actual situation of the site, the width and location of the oxidation spontaneous combustion belt are analyzed, and the ventilation mode 3 is finally determined to be more conducive to preventing the occurrence of coal spontaneous combustion, which provides theoretical guidance for the prevention of coal spontaneous combustion in mines.
- 110 method,
- mine ventilation modes,
- spontaneous combustion “three zones”,
- moving grid,
- oxygen volume fraction

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References (21)

References

[1]	张金锁,姚书志,齐琪,等. 我国煤炭资源安全绿色高效开发研究综述[J]. 资源与产业,2013,15(2):73−78. ZHANG Jinsuo, YAO Shuzhi, QI Qi, et al. Overview of safe, green and high-efficient development of China’s goal[J]. Resources & Industries, 2013, 15(2): 73−78.
[2]	中国煤炭工业协会. 2022年煤炭行业发展年度报告[Z]. 2023-03-28.
[3]	邓军,李贝,王凯,等. 我国煤火灾害防治技术研究现状及展望[J]. 煤炭科学技术,2016,44(10):1−7. DENG Jun, LI Bei, WANG Kai, et al. Research status and outlook on prevention and control technology of coal fire disaster in China[J]. Coal Science and Technology, 2016, 44(10): 1−7.
[4]	何满潮,宋振骐,王安,等. 长壁开采切顶短壁梁理论及其110工法—第三次矿业科学技术变革[J]. 煤炭科技,2017(1):1−9. doi: 10.3969/j.issn.1008-3731.2017.01.001 HE Manchao, SONG Zhenqi, WANG An, et al. Theory of longwall mining by using roof cutting shortwall team and 110 method: The third mining science and technology reform[J]. Coal Science & Technology Magazine, 2017(1): 1−9. doi: 10.3969/j.issn.1008-3731.2017.01.001
[5]	杨军,周开放,陈向军,等. 柠条塔煤矿110工法采空区漏风规律及防治对策[J]. 煤炭技术,2018,37(2):145−148. YANG Jun, ZHOU Kaifang, CHEN Xiangjun, et al. Air leakage regularity and control measures of 110 method in Ningtiaota Coal Mine[J]. Coal Technology, 2018, 37(2): 145−148.
[6]	张德志. “110工法”中综合防灭火技术分析及对策[J]. 神华科技,2019,17(3):21−25. ZHANG Dezhi. Analysis and countermeasures of comprehensive fire prevention and extinguishing technology in “110 Construction Method”[J]. Shenhua Science and Technology, 2019, 17(3): 21−25.
[7]	李宗翔,孙广义,王继波. 综放工作面煤柱内漏风与耗氧过程的数值模拟[J]. 力学与实践,2001(4):15−18. LI Zongxiang, SUN Guangyi, WANG Jibo. Numerical simulation of air leakage and oxygen consumption in coal pillare close to comprehensive coal face with caving method for top seam[J]. Mechanics and Engineering, 2001(4): 15−18.
[8]	李宗翔,衣刚,武建国,等. 基于“O”型冒落及耗氧非均匀采空区自燃分布特征[J]. 煤炭学报,2012,37(3):484−489. LI Zongxiang, YI Gang, WU Jianguo, etal. Study on spontaneous combustion distribution of goaf based on the “O” type risked falling and non-uniform oxygen[J]. Journal of China Coal Society, 2012, 37(3): 484−489.
[9]	兰泽全,张国枢,马汉鹏. 多漏风采空区“三带”分布模拟研究[J]. 矿业安全与环保,2008,35(4):1−4. LAN Zequan, ZHANG Guoshu, MA Hanpeng. Numerical simulation of “three-zone” distribution in multiple leakage gob[J]. Mining Safety & Environmental Protection, 2008, 35(4): 1−4.
[10]	秦庆举. 运河煤矿1302孤岛综放面采空区“三带”的确定[J]. 煤矿安全,2010,41(1):53−55. QIN Qingju. Determination of cob “three zones” in 1302 isolated island fully-mechanized caving face in Yunhe Coal Mine[J]. Safety in Coal Mines, 2010, 41(1): 53−55.
[11]	王家学,潘荣锟,余明高. 王台矿2304采面自燃“三带”观测及数值模拟[J]. 煤矿安全,2010,41(4):39−42. WANG Jiaxue, PAN Rongkun, YU Minggao. Measure and numerical simulation about the spontaneous ignition “three bands” in face 2304 of Wangtai Mine[J]. Safety in Coal Mines, 2010, 41(4): 39−42.
[12]	文虎,张泽,赵庆伟,等. 煤层分层前后采空区自燃“三带”的数值模拟[J]. 煤矿安全,2017,48(3):178−181. WEN Hu, ZHANG Ze, ZHAO Qingwei, et al. Numerical simulation on spontaneous combustion “three zones” of goaf before and after coal seam layering[J]. Safety in Coal Mines, 2017, 48(3): 178−181.
[13]	王炯,刘鹏,姜健,等. 切顶卸压沿空留巷回采工作面Y型通风漏风规律研究[J]. 采矿与安全工程学报,2021,38(3):625−633. WANG Jiong, LIU Peng, JIANG Jian, et al. Y-shaped ventilation air leakage law of working face of gob-side entry retaining by cutting roof to release pressure[J]. Journal of Mining & Safety Engineering, 2021, 38(3): 625−633.
[14]	CHU Tingxiang, LI Pin, CHEN Yuexia. Risk assessment of gas control and spontaneous combustion of coal under gas drainage of an upper tunnel[J]. International Journal of Mining Science and Technology, 2019, 29(3): 491−498. doi: 10.1016/j.ijmst.2018.05.002
[15]	XIA Tongqiang, ZHOU Fubao, WANG Xinxin, et al. Controlling factors of symbiotic disaster between coal gas and spontaneous combustion in longwall mining gobs[J]. Fuel, 2016, 182: 886−896. doi: 10.1016/j.fuel.2016.05.090
[16]	唐明云,戴广龙,秦汝祥,等. 综采工作面采空区漏风规律数值模拟[J]. 中南大学学报(自然科学版),2012,43(4):1494−1498. TANG Yunming, DAI Guanglong, QIN Ruxiang, et al. Numerical analysis of air-leakage law in goaf of fully mechanized face[J]. Journal of Central South University (Science and Technology), 2012, 43(4): 1494−1498.
[17]	ZHAI Xiaowei, XU Yu, YU Zhijin. Numerical analysis on the evolution of CO concentration in return corner: A case study of steady U-type ventilation working face[J]. Numerical Heat Transfer, Part A: Applications, 2018, 74: 1732-1746.
[18]	谭波,牛会永,和超楠,等. 回采情况下采空区煤自燃温度场理论与数值分析[J]. 中南大学学报(自然科学版),2013,44(1):381−387. doi: 10.11817/j.issn.1672-7207.2013.01.048 TAN Bo, NIU Huiyong, HE Chaonan, et al. Goaf coal spontaneous combustion temperature field theory and numerical analysis under mining conditions[J]. Journal of Central South University ( Science and Technology ), 2013, 44(1): 381−387. doi: 10.11817/j.issn.1672-7207.2013.01.048
[19]	时国庆,胡方坤,王德明,等. 采空区自燃“三带”分布规律的四维动态模拟[J]. 中国矿业大学学报,2014,43(2):189−194. SHI Guoqing, HU Fangkun, WANG Deming, et al. Unsteady simulation on distribution of three zones for spontaneous combustion in goaf areas[J]. Journal of China University of Mining & Technology, 2014, 43(2): 189−194.
[20]	胡志成. 结合动态区域分解的移动网格方法及其应用[D]. 杭州:浙江大学,2012.
[21]	LI Ruo, TANG Tao, ZHANG Pingwen. A moving mesh finite element algorithm for singular problems in two and three space dimensions[J]. Journal of Computational Physics, 2002, 177(2): 365−393. doi: 10.1006/jcph.2002.7002

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Numerical simulation study on “three zones” of spontaneous combustion in goaf by “110 construction method” under different ventilation modes