Study on gas flow pressure caused airflow disorder in parallel downward ventilated roadways

Wang Kai; Wu Zeqi; Zhou Aitao; Feng Shuo

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Wang Kai, Wu Zeqi, Zhou Aitao, Feng Shuo. Study on gas flow pressure caused airflow disorder in parallel downward ventilated roadways[J]. Journal of Mining Science and Technology, 2016, 1(1): 49-57.

Citation:

Wang Kai, Wu Zeqi, Zhou Aitao, Feng Shuo. Study on gas flow pressure caused airflow disorder in parallel downward ventilated roadways[J]. Journal of Mining Science and Technology, 2016, 1(1): 49-57.

Citation:

Wang Kai, Wu Zeqi, Zhou Aitao, Feng Shuo. Study on gas flow pressure caused airflow disorder in parallel downward ventilated roadways[J]. Journal of Mining Science and Technology, 2016, 1(1): 49-57.

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Study on gas flow pressure caused airflow disorder in parallel downward ventilated roadways

Wang Kai^1,2,
Wu Zeqi^1,2,
Zhou Aitao^1,2,
Feng Shuo^1,2

1.
College of Resources and Safety Engineering,China University of Mining and Technology,Beijing 100083,China;
2.
State Key Laboratory of Coal Resources and Safe Mining,Beijing 100083,China

Received Date: 2016-06-20
Publish Date: 2016-08-30

Abstract

Abstract

The high-concentration of methane accumulating in a tilted roadway could produce gas flow pressure.This gas flow pressure can induce airflow disorder in the tilted roadway and its lateral roadways.In this paper,an experimental system was constructed for representing parallel downward ventilation roadways.With this system,a series of experiments were conducted to study the gas flow pressureinduced airflow disorder in coal mine roadways.The tilted roadway was saturated with 100% concentration methane while the lateral roadway was saturated with air for all experiments.The resistance coefficient of the tilted roadway and the lateral roadway were changed in different experiments.The experimental results indicate that the gas flow pressure could cause complex airflow changes in parallel downward ventilation roadways and lead to methane and airflow reciprocation in the roadways.A vibration model was developed based on a simplification of the experimental system.The vibration model can explain the effects of windage on the damping force of the vibration.Both the experiment and model results indicate that the windage increase of the tilted roadway or the lateral roadway can weaken the airflow vibration.Analysis of the methane movement in the experimental system indicates that for the tilted roadway and the lateral roadway an windage increase in one roadway is helpful for the airflow stability but harmful for its own gas discharge.If gas accumulation appears in an in situ downward ventilation roadway,the windage of the lateral roadway should be increased without delay to keep the system airflow stable and to discharge the accumulated methane as soon as possible.
- downward ventilation,
- parallel roadways,
- gas flow pressure,
- airflow disorder,
- windage

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References

[1]	林柏泉,常建华,翟成.我国煤矿安全现状及应当采取的对策分析[J].中国安全科学学报,2006,16(05):42-46.
[2]	Lin Baiquan,Chang Jianhua,Zhai Cheng.Analysis on coal mine safety situation in China and its counter measures[J].China Safety Science Journal,2006,16(05):42-46.
[3]	程远平,俞启香.中国煤矿区域性瓦斯治理技术的发展[J].采矿与安全工程学报,2007,24(04):383-390.
[4]	Cheng Yuanping,Yu Qixiang.Development of regional gas control technology for Chinese coalmines[J].Journal of Mining & Safety Engineering,2007,24(04):383-390.
[5]	程远平,付建华,俞启香.中国煤矿瓦斯抽采技术的发展[J].采矿与安全工程学报,2009,26(02):127-139.
[6]	Cheng Yuanping,Fu Jianhua,Yu Qixiang.Development of gas extraction technology in coal mines of China[J].Journal of Mining & Safety Engineering,2009,26(02):127-139.
[7]	陆守香,何杰,于春红,等.水抑制瓦斯爆炸的机理研究[J].煤炭学报,1998,23(04):83-87.
[8]	Lu Shouxiang,He Jie,Yu Chunhong,et al.Mechanism of gas explosion suppression by water[J].Journal of China Coal Society,1998,23(04):83-87.
[9]	李成武,杨威,韦善阳,等.煤与瓦斯突出后灾害气体影响范围试验研究[J].煤炭学报,2014,39(03):478-485.
[10]	Li Chengwu,Yang Wei,Wei Shanyang,et al.Experimental research of influence scope of disaster gas after coal and gas outburst[J].Journal of China Coal Society,2014,39(03):478-485.
[11]	高娜,张延松,胡毅亭.温度压力对瓦斯爆炸危险性影响的实验研究[J].爆炸与冲击,2016,36(02):218-223.
[12]	Gao Na,Zhang Yansong,Hu Yiting.Experimental study on gas explosion hazard under different temperatures and pressures[J].Explosion and Shock Waves,2016,36(02):218-223.
[13]	吴则琪,冯海峰,翟伟,等.唐山矿边缘采区上山瓦斯积聚及风流停滞现象研究[C]//中国矿业大学(北京).资源与安全工程学院第四届研究生学术论坛:采矿与安全科学技术研究论文集.北京:煤炭工业出版社,2015:351-356.
[14]	张仁松,杨吉才,罗双全.对瓦斯矿回采工作面下行通风的探讨[J].煤炭工程师,1998(01):27-29.
[15]	Zhang Rensong,Yang Jicai,Luo Shuangquan.Discussion on downstream ventilation in face of gas coal mine[J].Coal Engineer,1998(01):27-29.
[16]	张仁松,唐继东.矿井瓦斯对风流稳定性影响的探讨[J].煤炭工程师,1997(05):31-33.
[17]	Zhang Rensong,Tang Jidong.Inquiring into the influence of mine gas on the stability of air flow[J].Coal Engineer,1997(05):31-33.
[18]	李宗翔,王雅迪,高光超.基于有源风网的瓦斯突出3D矿井灾变通风仿真[J].中国安全科学学报,2015,25(08):43-49.
[19]	Li Zongxiang,Wang Yadi,Gao Guangchao.Simulation of 3D mine ventilation system after gas outburst based on sourcecontaining ventilation network[J].China Safety Science Journal,2015,25(08):43-49.
[20]	李宗翔,刘宇,于景晓,等.突出瓦斯流与矿井通风系统耦合移动仿真[J].重庆大学学报,2012,35(11):111-116.
[21]	Li Zongxiang,Liu Yu,Yu Jingxiao,et al.Dynamic superposition and simulation research on flowing of gas outburst and mine ventilation network[J].Journal of Chongqing University,2012,35(11):111-116.
[22]	周爱桃.瓦斯突出冲击气流传播及诱导矿井风流灾变规律研究[D].北京:中国矿业大学(北京),2012.
[23]	周延,宋双林,郭江炜,等.并联旁侧支路风流逆转次序的实验研究[J].中国矿业大学学报,2009,38(04):467-470.
[24]	Zhou Yan,Song Shuanglin,Guo Jiangwei,et al.Experi mental study of the sequence of flow reversals in accessional airways parallel to a fire[J].Journal of China University of Mining & Technology,2009,38(04):467-470.
[25]	周延.隧道及网络火灾中的热动力现象研究[M].徐州:中国矿业大学出版社,2006:75-81.
[26]	Zhou Yan,Meng Qian,Novzhilov V.A non-dimensional criterion and its proof for transient flow caused by fire in ventilation network[J].Fire Safety Journal,2006,41(7):523-528.
[27]	蔡增基,龙天渝.流体力学泵与风机[M].北京:中国建筑工业出版社,2009:270-284.
[28]	Chow W K,Wong K Y,Chung W Y.Longitudinal ventilation for smoke control in a tilted tunnel by scale modeling[J].Tunnelling and Underground Space Technology,2010,25(2):122-128.
[29]	Zhang Haoran,Pera S L,Carla S V,et al.Applied research of UShape ventilation network in underground mine[J].Archives of Mining Sciences,2014,59(2):381-394.
[30]	Ko J S,Yoon C H,Yoon S W,et al.Determination of the applicable exhaust airflow rate through a ventilation shaft in the case of road tunnel fires[J].Safety Science,2010,48(6):722-728.
[31]	Tsai Kuangchung,Chen Honhsiang,Lee Shin-ku.Critical ventilation velocity for multi-source tunnel fires[J].Journal of Wind Engineering and Industrial Aerodynamics,2010,98(10/11):650-660.
[32]	Lee C K,Chaiken R F,Singer J M.Interaction between duct fires and ventilation flow:an experimental study[J].Combustion Science and Technology,1979,20(1/2):59-72.
[33]	Thomas P H.Movement of smoke in horizontal corridors against an air flow[J].The Institute of Fire Engineers Quarterly,1970,30(77):45-53.
[34]	张驰,李新东.相似理论中时间相似的达成与意义[J].郑州铁路职业技术学院学报,2011,23(02):15-17.
[35]	Zhang Chi,Li Xindong.Reach and significance of time similar in similarity theory[J].Journal of Zhengzhou Railway Vocational & Technical College,2011,23(02):15-17.
[36]	范鹏贤,王明洋,邢灏喆,等.模型试验中材料变形破坏的时间相似问题[J].岩石力学与工程学报,2014,33(09):1843-1851.
[37]	Fan Pengxian,Wang Mingyang,Xing Haozhe,et al.Timedependent problems of deformation and failure in geomechanical model tests[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(09):1843-1851.
[38]	陈素碧,刘荣桂,李琮琦,等.海洋大气区预应力混凝土氯离子传输时间相似关系研究[J].硅酸盐通报,2015,34(11):3338-3344.
[39]	Chen Subi,Liu Ronggui,Li Congqi,et al.Similar time relationship of chloride ion transmission in prestressed concrete in saltfog environment[J].Bulletin of the Chinese Ceramic Society,2015,34(11):3338-3344.
[40]	聂百胜,王洋,戴林超,等.突出后巷道瓦斯浓度分布规律的数值模拟研究[C] // 2010(沈阳)国际安全科学与技术学术研讨会.沈阳:东北大学,2010:880-883.
[41]	崔永国.瓦斯突出气体逆流运移规律及致灾范围研究[D].北京：中国矿业大学（北京）,2014.
[42]	Otuonye F,Sheng J.A numerical simulation of gas flow during coal/gas outbursts[J].Geotechnical and Geological Engineering,1994(12):15-34

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