瓦斯爆炸起爆强度对巷道壁面冲击破坏的影响
Influence of Initiation Intensity of Gas Explosion on Impact Failure of Roadway Wall
DOI: 10.12677/ME.2022.103032, PDF,    国家自然科学基金支持
作者: 王维建：湖南科技大学，资源环境与安全工程学院，湖南 湘潭；兴义民族师范学院，物理与工程技术学院，贵州 兴义；叶 青, 贾真真, 李淑娟, 丁文学, 伍堂锐：湖南科技大学，资源环境与安全工程学院，湖南 湘潭
关键词: 瓦斯爆炸；爆炸强度；破坏特征；超压；数值模拟；Gas Explosion； Initiation Intensity； Failure Characteristics； Overpressure； Numerical Simulation
摘要: 矿井瓦斯爆炸会对巷道产生严重破坏，然而在分析巷道瓦斯爆炸热冲击破坏时，不同爆炸强度时的巷道壁面破坏特征分析较少。针对现有研究的不足，本研究利用LS-DYNA建立了巷道瓦斯爆炸物理数学模型，设置的爆炸能量分别为基本模型瓦斯爆炸能量的2，4，6，8，10，15，30倍，模拟了不同爆炸强度的瓦斯爆炸热冲击对瓦斯爆炸巷道壁面破坏特性的影响，并从超压变化、速度变化、位移变化和应力变化四个方面进行分析。研究结果表明：随着爆炸强度的增加，壁面超压增大，封闭端受到的超压载荷越强，封闭端壁面损伤破坏也越严重。随着瓦斯爆炸强度的增加，壁面测点最大位移不断增大。研究成果将为煤矿瓦斯爆炸灾害防治和瓦斯爆炸事故调查提供理论依据和技术指导，对丰富和完善瓦斯爆炸理论也将起到积极的促进作用。
Abstract: Gas explosion in underground coal mine will cause serious damage to the roadway. However, when the thermal shock damage of gas explosion in roadway was analyzed, the results on damage characteristics of roadway wall under different explosion intensity are less. In view of the shortcomings of the existing research, LS-DYNA is used to establish the physical and mathematical model of gas explosion in roadway. The explosion energies are set as 2, 4, 6, 8, 10, 15 and 30 times of the gas explosion energy of the basic model. The influence of different explosion intensity on the wall failure characteristics of gas explosion in roadway is simulated. It is analyzed from four aspects: over-pressure change, velocity change, displacement change and stress change. The results show that with the increase of explosion intensity, the wall overpressure increases, and the stronger the overpressure load on the closed end, the more serious the wall damage of the closed end. With the increase of gas explosion intensity, the maximum displacement of wall measurement points increases continuously. The research results can provide theoretical basis and technical guidance for the prevention and control of gas explosion disasters and the investigation of gas explosion accidents in coal mine, and will also play a positive role in enriching and perfecting the theory of gas explosion.
文章引用：王维建, 叶青, 贾真真, 李淑娟, 丁文学, 伍堂锐. 瓦斯爆炸起爆强度对巷道壁面冲击破坏的影响[J]. 矿山工程, 2022, 10(3): 273-286. https://doi.org/10.12677/ME.2022.103032

参考文献

[1] 叶青. 管内瓦斯爆炸传播特性及多孔材料抑制技术研究[D]: [博士学位论文]. 徐州: 中国矿业大学, 2007.
[2] 叶青, 林柏泉. 受限空间瓦斯爆炸传播特性[M]. 北京: 中国矿业大学出版社, 2012.
[3] 林柏泉, 菅从光, 张辉. 管道壁面散热对瓦斯爆炸传播特性影响的研究[J]. 中国矿业大学学报, 2009, 38(1): 1-4.
[4] 柳伟. 煤矿瓦斯爆炸热冲击对管道壁面损伤破坏特性研究[D]: [硕士学位论文]. 湘潭: 湖南科技大学, 2017.
[5] Ye, Q., Wang, G.G.X., Jia, Z.Z. and Zheng, C.S. (2017) Experimental Study on the Influence of Wall Heat Effect on Gas Explosion and Its Propagation. Applied Thermal Engineering, 118, 392-397. [Google Scholar] [CrossRef] 
[6] 柳伟, 叶青, 伍堂锐. 管道内瓦斯爆炸冲击作用特性数值模拟研究[J]. 矿业工程研究, 2016, 31(3): 15-20.
[7] 高娜, 张延松. 初始温度和初始压力对瓦斯爆炸特性的影响研究[D]: [博士学位论文]. 南京: 南京理工大学, 2016.
[8] Nie, B.S., Yang, L.L., Ge, B.Q., Wang, J.W. and Li, X.C. (2017) Chemical Kinetic Characteristics of Methane/Air Mixture Explosion and Its Affecting Factors. Journal of Loss Prevention in the Process Industries, 49, 1-8. [Google Scholar] [CrossRef] 
[9] Liu, Q.M., Zhang, Y.M., Niu, F. and Li, L. (2015) Study on the Flame Propagation and Gas Explosion in Propane/Air Mixtures. Fuel, 140, 677-684. [Google Scholar] [CrossRef] 
[10] 吴兵. 矿井封闭空间瓦斯爆炸爆燃过程热动力学研究[D]: [博士学位论文]. 北京: 中国矿业大学, 2003.
[11] 王志荣. 受限空间气体爆炸传播及其动力学研究[D]: [博士学位论文]. 南京: 南京工业大学, 2005.
[12] 朱传杰, 林柏泉. 爆炸冲击波前流场扬尘特征及其多相破坏效应[D]: [博士学位论文]. 徐州: 中国矿业大学, 2011.
[13] 江丙友, 林柏泉, 朱传杰, 等. 瓦斯爆炸冲击波在采煤工作面巷网中传播特性的数值模拟[J]. 煤炭学报, 2011, 36(6): 968-972.
[14] Ye, Q., Jia, Z.Z., Wang, H.Z. and Pi, Y. (2013) Characteristics and Control Technology of Gas Explosion in Gob of Coal Mines. Disaster Advance, 6, 112-118.
[15] Ye, Q., Lin, B.Q., Jian, C.G. and Jia, Z.Z. (2012) Propagation Characteristics of Gas Explosion in Duct with Sharp Change of Cross Sections. Disaster Advance, 15, 999-1003.
[16] Qing, Y. and Jia, Z.Z. (2014) Effect of the Bifurcating Duct on the Gas Explosion Propagation Characteristics. Combustion, Explosion, and Shock Waves, 50, 424-428. [Google Scholar] [CrossRef] 
[17] Yang, Z.H., Ye, Q., Jia, Z.Z. and Li, H. (2020) Numerical Simulation of Pipeline-Pavement Damage Caused by Explosion of Leakage Gas in Buried PE Pipelines. Advances in Civil Engineering, 2020, Article ID: 4913984. [Google Scholar] [CrossRef] 
[18] 伍堂锐. 瓦斯爆炸冲击作用下巷道壁面损伤破坏特性研究[D]: [硕士学位论文]. 湘潭: 湖南科技大学, 2018.
[19] 石少卿. ANSYS/LS-DYNA在爆炸与冲击领域内的工程应用[M]. 北京: 中国建筑工业出版社, 2011.
[20] 熊轩. 钢筋混凝土框架结构中砌体填充墙抗燃气爆炸性能研究[D]: [硕士学位论文]. 武汉: 武汉理工大学, 2013.

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