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Journal articles on the topic 'Methane explosion'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Florea, Gheorghe Daniel, Dan Codruț Petrilean, Nicolae Ioan Vlasin, and Vlad Mihai Păsculescu. "Design of an experimental stand for hydrogen explosions." MATEC Web of Conferences 389 (2024): 00072. http://dx.doi.org/10.1051/matecconf/202438900072.

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Hydrogen, with its remarkable potential as a clean and abundant energy carrier, has gained significant attention as a promising solution for a sustainable future. However, the handling, storage, and utilization of hydrogen come with inherent risks, particularly the potential for explosions. The present work deals with the design of an experimental stand for hydrogen explosions in interconnected spaces, based on previous experience in the field of air-methane mixtures explosions. Considering the explosive properties of hydrogen, much more aggressive than methane gas, a comparative analysis is c

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2

Li, Lin, Tiantian Liu, Zhiqiang Li, Xiangjun Chen, Lin Wang, and Shuailong Feng. "Different Prevention Effects of Ventilation Dilution on Methane Accumulation at High Temperature Zone in Coal Mine Goafs." Energies 16, no. 7 (2023): 3168. http://dx.doi.org/10.3390/en16073168.

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In coal mine goafs, spontaneous combustion of coal can result in methane accumulation, which raises the danger of methane explosion disasters. As an atmospheric control tool, ventilation is applied to ensure air quality for avoiding disasters in underground mines. However, during the process of the spontaneous combustion of coal in coal mine goafs, the impact of ventilation dilution on the possible methane explosions induced by coal combustion has not been well investigated. In this study, a validated gas flow model for the spontaneous coal combustion environment in goafs of coal mines is adop

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3

Jia, Zhenzhen, Qing Ye, Wei Xiong, and Jialin Liu. "Damage Effect and Injury Range of Shock Waves in Mine Methane Explosion." Methane 3, no. 4 (2024): 584–94. http://dx.doi.org/10.3390/methane3040033.

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During the process of mining underground coal, the coal emits a large amount of methane into the mining space, which may lead to methane accumulation and exceed explosion safety limits When the methane encounters a fire source, a methane explosion may occur. The forceful impact caused by a methane explosion in an underground roadway can cause serious damage to the roadway structures and even lead to the collapse of the ventilation system. At the same time, the explosion impact may result in the death of workers and cause physical injury to the surviving workers. Therefore, it is necessary to s

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4

Ogunfuye, Samuel, Hayri Sezer, Furkan Kodakoglu, Hamed Farmahini Farahani, Ali S. Rangwala, and V’yacheslav Akkerman. "Dynamics of Explosions in Cylindrical Vented Enclosures: Validation of a Computational Model by Experiments." Fire 4, no. 1 (2021): 9. http://dx.doi.org/10.3390/fire4010009.

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Recent explosions with devastating consequences have re-emphasized the relevance of fire safety and explosion research. From earlier works, the severity of the explosion has been said to depend on various factors such as the ignition location, type of a combustible mixture, enclosure configuration, and equivalence ratio. Explosion venting has been proposed as a safety measure in curbing explosion impact, and the design of safety vent requires a deep understanding of the explosion phenomenon. To address this, the Explosion Venting Analyzer (EVA)—a mathematical model predicting the maximum overp

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Pacifique, Nahimana, Yang Ke, Yue Jia, and Muhammad Usama Raza. "Numerical Simulation on Methane Coal Dust Composite Explosion in Restricted Space by Ultrafine Water Mist Suppression." European Journal of Theoretical and Applied Sciences 1, no. 6 (2023): 992–1001. http://dx.doi.org/10.59324/ejtas.2023.1(6).96.

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The purpose of this experimental investigation was to examine the effects of ultrafine water mist on explosions caused by methane and coal dust hybrids that occurred inside of a closed vessel. In this study, we built a small-scale semi-closed visualization experimental platform and ran simulations to study the effects of four factors on the explosion of methane coal mixtures: the amount of ultra-fine water mist sprayed, the volume fraction of methane, the position of the methane inlet, and the amount of time it took to premix. This allowed us to gain a deeper understanding of the repressive ef

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6

Wei, WANG, LU Chang, LI Shiwei, and WANG Di. "Research Progress and Challenges of Methane Explosion Arrest Technology." Journal of Scientific and Engineering Research 12, no. 03 (2025): 40–42. https://doi.org/10.5281/zenodo.15165947.

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Methane explosions have become an important issue in the field of energy security due to their high incidence and destructive nature. Through systematic literature analysis, this paper summarizes the dynamic mechanism of methane explosion, the development status and technical bottlenecks of explosion suppression technology, focuses on the synergistic mechanism of inerting explosion suppression, physical barrier, chemical inhibition and intelligent explosion suppression technology, and proposes the future development direction of multi-scale explosion suppression technology integration and inte

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7

Nahimana, Pacifique, Ke Yang, Jia Yue, and Usama Raza Muhammad. "Numerical Simulation on Methane Coal Dust Composite Explosion in Restricted Space by Ultrafine Water Mist Suppression." European Journal of Theoretical and Applied Sciences 1, no. 6 (2023): 992–1001. https://doi.org/10.59324/ejtas.2023.1(6).96.

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The purpose of this experimental investigation was to examine the effects of ultrafine water mist on explosions caused by methane and coal dust hybrids that occurred inside of a closed vessel. In this study, we built a small-scale semi-closed visualization experimental platform and ran simulations to study the effects of four factors on the explosion of methane coal mixtures: the amount of ultra-fine water mist sprayed, the volume fraction of methane, the position of the methane inlet, and the amount of time it took to premix. This allowed us to gain a deeper understanding of the repressive ef

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8

Yang, Dongping, Yulong Duan, Min Guo, Weibin Wang, and Yang Liu. "Suppression effect of nickel foam on the explosion of methane/ethane mixture." Thermal Science, no. 00 (2024): 267. https://doi.org/10.2298/tsci240907267y.

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Methane and ethane are the main components of natural gas and coal bed gas in some regions of China, and the presence of ethane further exacerbates the risk of explosions, posing significant safety challenges during the production, storage, transportation, and use of natural gas. This study utilizes an self-constructed small-size experimental platform to investigate the suppression effect of nickel foam on the explosion of methane/ethane mixture in explosion tubes. The results show that nickel foam has two different effects on the methane/ethane flame: promotion and suppression. When the explo

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9

Wang, Yue, Zhi Wang, Xingyan Cao, and Haoyue Wei. "Study on the Characteristics and Influence Factor of Methane and Coal Dust Gas/Solid Two-Phase Mixture Explosions." Fire 6, no. 9 (2023): 359. http://dx.doi.org/10.3390/fire6090359.

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This research aimed to the characteristics and influence factor of methane and coal dust gas/solid two-phase mixture explosions by experiment. Through comparative analysis of flame propagation characteristics, pressure, flame temperature and products, the characteristics of gas/solid explosions and its influence factor were analyzed. And the influence mechanism was also revealed. Results indicate that the coal dust parameter and methane concentration were the important influence factor on mixture explosions. Explosion intensity could be indirectly affected by influencing the flame propagation.

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10

Çalık, Ferdi. "The Evaluation of Methane Gas Explosion Risk in Confined Spaces – A Case Study in the Ship Building Industry." International Journal of Advances in Engineering and Pure Sciences 37, no. 2 (2025): 144–52. https://doi.org/10.7240/jeps.1600904.

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Hydrocarbon gas explosions such as methane gas in confined spaces represent a significant hazard across various industries, particularly mining, oil and gas extraction, and oxy-cutting processes. The risks associated with methane accumulation are exacerbated by the unique characteristics of confined spaces, where gas concentrations can reach explosive levels. The explosive potential of methane is primarily influenced by its concentration in the air. Understanding the conditions under which methane becomes hazardous is crucial for developing effective safety protocols and mitigation strategies.

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11

Li, Run Zhi, Rong Jun Si, and Yan Song Zhang. "Experimental Study of Explosion Pressure Characteristics of Methane under High Temperature Conditions." Applied Mechanics and Materials 687-691 (November 2014): 148–52. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.148.

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Methane explosion pressure characteristics under the condition of different temperatures (25°C-200 °C) were studied by the special environment 20L explosion characteristics test system. By the experimental results, in the case of other conditions unchanged, with the increase of environmental temperature, the maximum explosion pressure of the optimum explosion concentration decrease, the maximum explosion pressure and the reciprocal of environmental temperature show linear attenuation law, the maximum pressure rise rate is not influenced by environmental temperature basically; Outside the scope

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12

Skritsky, Vladimir. "REASONS OF MINE ACCIDENT OCCURING WITH DISASTROUS CONSEQUENCES." Interexpo GEO-Siberia 2, no. 5 (2019): 20–26. http://dx.doi.org/10.33764/2618-981x-2019-2-5-20-26.

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In the work it is proved that methane explosions with disastrous consequences have become after conversion to high-effective mining of extraction pillar during mining flat and steep coal seams at functioning extracting areas. It is established that during high-efficient mining of extracting areas, first combustion and methane explosions happen at worked space, where they are initiated with occurred and non-noticed places of coal self-ignition. From worked space burning methane outbursts by explosion wave from the cove to the working face and near workings where the explosion develops with coal

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13

Hu, Sijia, Yanjun Li, Chuanjie Zhu, et al. "Investigating the Influence of Flue Gas Induced by Coal Spontaneous Combustion on Methane Explosion Risk." Fire 7, no. 4 (2024): 105. http://dx.doi.org/10.3390/fire7040105.

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During the process of coal spontaneous combustion (CSC), a plethora of combustible gases alongside inert gases, such as CO2, are copiously generated. However, prior investigations have regrettably overlooked the pivotal influence of inert gas production on the propensity for methane explosions during CSC. To investigate the impact of the flue gas environment generated by CSC, containing both combustible and inert gases, on the risk of methane explosion, a high-temperature programmed heating test system for CSC was employed to analyze the generation pattern of flue gas. It was found that CO, CO

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14

Yan, C., ZR Wang, F. Jiao, and C. Ma. "Numerical simulation on structure effects for linked cylindrical and spherical vessels." SIMULATION 94, no. 9 (2018): 849–58. http://dx.doi.org/10.1177/0037549718763081.

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This paper presents a simulation study on the methane–air mixture explosions through using the eddy-dissipation concept (EDC) model in FLUENT. The aims are to investigate the structure effects of methane–air mixture explosions in a spherical vessel, cylindrical vessel and different systems of cylindrical vessels connected with pipe. Meanwhile, in order to study the characteristics of methane-air mixture explosions in the linked vessels, changes of flame temperature and airflow velocity in the linked vessels are simulated and analyzed. The results suggest that the effect of structural changes o

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15

Tan, Bo, Huilin Liu, Bin Xu, and Tian Wang. "Comparative study of the explosion pressure characteristics of micro- and nano-sized coal dust and methane–coal dust mixtures in a pipe." International Journal of Coal Science & Technology 7, no. 1 (2020): 68–78. http://dx.doi.org/10.1007/s40789-019-00289-w.

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AbstractCoal dust explosion accidents often cause substantial property damage and casualties and frequently involve nano-sized coal dust. In order to study the impact of nano-sized coal on coal dust and methane–coal dust explosions, a pipe test apparatus was used to analyze the explosion pressure characteristics of five types of micro-nano particle dusts (800 nm, 1200 nm, 45 μm, 60 μm, and 75 μm) at five concentrations (100 g/m3, 250 g/m3, 500 g/m3, 750 g/m3, and 1000 g/m3). The explosion pressure characteristics were closely related to the coal dust particle size and concentration. The maximu

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16

Kostenko, Viktor, Olha Bohomaz, Tetiana Kostenko, and Andriy Berezovskyi. "MECHANISM OF COAL AEROSOL EXPLOSION DEVELOPMENT IN AN EXPERIMENTAL MINE WORKING." Rudarsko-geološko-naftni zbornik 38, no. 2 (2023): 135–42. http://dx.doi.org/10.17794/rgn.2023.2.10.

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Today there is not enough scientific data on the energy level and the velocity of an explosion in actual mine workings, which have a cross-sectional area larger than experimental mine workings. The objective of the paper is to justify the energy parameters of an explosion in actual mine workings based on the disclosure of the fire front development mechanism when coal dust explodes in an experimental mine working with a limited cross-sectional area. These studies can be the basis for choosing the speed of action and the strength of the means of the localization of dust explosions. The main res

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17

Yan, Chen, Zhirong Wang, Kai Liu, Qingqing Zuo, Yaya Zhen, and Shangfeng Zhang. "Numerical simulation of size effects of gas explosions in spherical vessels." SIMULATION 93, no. 8 (2017): 695–705. http://dx.doi.org/10.1177/0037549717698227.

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To study the law of sizes on gas explosions, numerical simulations of methane–air mixture explosions in spherical vessels were performed. The law of sizes on gas explosions is studied using FLUENT simulations with the [Formula: see text] two-equation turbulent model, the eddy-dissipation-concept model, thermal dissipation at a wall boundary, the P1 model, and the SIMPLE algorithm. The experimental results suggest that under an adiabatic condition without energy loss, the maximum explosion pressures in different spherical vessels are all 0.82 MPa, and the effect on the explosion intensity in sp

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18

Peng, Zhengbiao, Jafar Zanganeh, and Behdad Moghtaderi. "CFD Modeling of Flame Jump across Air Gap between Evasé and Capture Duct for Ventilation Air Methane Abatement." Processes 9, no. 12 (2021): 2278. http://dx.doi.org/10.3390/pr9122278.

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The ventilation air–methane (VAM) released from underground mines is often transported into regenerative thermal oxidizer (RTO) devices and burnt into heat energy. This study numerically investigates the scenarios where explosion occurs inside the RTO and the flame and pressure waves propagate back quickly towards the VAM discharge duct. Possibilities of secondary explosion in the discharge duct, hence in the downstream underground mines, are examined. The results critically showed that when the methane concentration accumulated in the RTO reached 7.5% or above, the flame generated from the ex

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19

Liu, Yan, Lin Chen, Xuting Wang, et al. "Study on Overpressure Explosion of Oil and Gas Pipelines and Risk Prevention & Control Measures." Journal of Physics: Conference Series 2520, no. 1 (2023): 012028. http://dx.doi.org/10.1088/1742-6596/2520/1/012028.

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Abstract In view of the flammable and explosive characteristics of oil and gas pipeline transportation medium, once it leaks, production safety accidents are easy to occur. This study uses explosions with severe consequences caused by natural gas pipeline leakage as an example. The risk factors and accident modes of oil and gas storage and transportation pipelines are analyzed; the explosion load is calculated by a scaling explosion prediction model with the TNO multi-energy method; the relationship between overpressure load and combustible gas cloud radius is studied. The methane-air explosio

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20

Ma, Dong, Leilin Zhang, Tingfeng Zhu, and Zhenfang Shi. "Characteristics of Carbon Monoxide and Ethylene Generation in Mine’s Closed Fire Zone and Their Influence on Methane Explosion Limits." Fire 7, no. 5 (2024): 168. http://dx.doi.org/10.3390/fire7050168.

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Methane explosions often occur during the closure process of mine fire zones, during which the concentration of combustible gases such as monoxide and ethylene produced by coal combustion dynamically changes, which changes the risk of methane explosion. Therefore, studying the gas concentration distribution and methane explosion limits during the process of mine closure is of great significance for disaster prevention and control. In this paper, a three-dimensional physical model of gob was built, and the distribution of monoxide and ethylene in the process of fire zone closure was investigate

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21

Zhang, Zeng Zhi, Na Gu, and Ji Fei Zhang. "The Application of Aqueous Span 80 Composite Material in Methane Absorption and Explosion Suppression." Materials Science Forum 610-613 (January 2009): 125–29. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.125.

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This paper aims to design a sort of aqueous atomization absorbing material which can absorb mine gas under coal mine to decrease the methane concentration and reduce the explosion hazard. The material was composed of water as matrix, Span 80 as methane absorbent, and inorganic salt as additive. Methane the main component of mine gas was used as model of mine gas. The influence of concentration of inorganic salt on absorption and the effect of different compound materials made of Span 80 and inorganic salt on absorption were studied using Head Space Gas Chromatography to determine the content o

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22

Zavialova, Оlena. "IMPROVEMENT OF MEANS OF LOCALIZATION OF COAL DUST EXPLOSIONS." JOURNAL of Donetsk mining institute, no. 1 (2021): 110–18. http://dx.doi.org/10.31474/1999-981x-2021-1-110-118.

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Purpose. Improving the design of coal dust explosion localization devices to increase their speed, premature creation of an effective barrier from the cloud of extinguishing agent by reliable suppression of the fire front and, as a consequence, stop the spread of explosion on the mine, which will increase personnel protection from negative explosion factors. Methods. A comprehensive approach was used, which includes analysis and generalization of statistical data on explosions of methane-air and dust-air mixtures in mines of Ukraine, critical analysis of means for localization of coal dust exp

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23

Sun, Hao, Guoxun Jing, Chuang Liu, and Hailin Jia. "Study on the explosion suppression performance of methane-air mixtures based on NH4H2PO4-modified dry water gel." Thermal Science, no. 00 (2025): 125. https://doi.org/10.2298/tsci250411125s.

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As a vital energy source, methane poses significant explosion risks that threaten industrial safety. To address the limitations of conventional methane explosion suppressants, a modified dry water gel (NH?H?PO?-SCDW) was prepared by incorporating 5 wt% NH?H?PO?, 0.1 wt% sodium alginate (SA), and 0.05 wt% calcium lactate (CL). The physical properties and explosion suppression performance of the composite were systematically evaluated. Experimental results showed that NH?H?PO?-SCDW exhibited not only excellent structural stability and water retention capability, but also rapid water release unde

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24

Şimon-Marinică, Adrian Bogdan, and Zoltan Vass. "Automation of physical experiments regarding explosions of air-methane mixtures." MATEC Web of Conferences 305 (2020): 00013. http://dx.doi.org/10.1051/matecconf/202030500013.

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In the following study, experimental results are obtained from an automated stand. With the help of this experimental stand, visualization techniques such as Schlieren and Shadowgraph can be applied, to study the flame front propagation of air and inflammable gas mixtures initiation. In parallel, an infrared sensor was used to control a push-pull solenoid to open the gas escape diaphragm of the stand. To obtain the explosive gas mixture at various concentrations (between the lower explosion limit and the upper explosion limit) an original programmable mixer was used, based on computational alg

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25

Zhang, Qi, and Qiuju Ma. "Pressure and flow propagation rule beyond original premixed area of methane-air in tunnel." International Journal of Numerical Methods for Heat & Fluid Flow 24, no. 8 (2014): 1626–35. http://dx.doi.org/10.1108/hff-08-2013-0259.

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Purpose – Whether a fire can be initiated in an explosion accident depends on the explosion and deflagration process. In the methane-air explosion in a tunnel, the flame accelerates from the ignition point. However, where it begins to decelerate is not clear. The purpose of this paper is to examine the explosion overpressure, flow and flame propagation beyond the premixed area of methane-air in a tunnel. Design/methodology/approach – The numerical simulation was used to study the explosion processes of methane-air mixtures in a tunnel. Based on the numerical simulation and its analysis, the ex

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26

Khokhlov, Sergey, Zaur Abiev, and Viacheslav Makkoev. "The Choice of Optical Flame Detectors for Automatic Explosion Containment Systems Based on the Results of Explosion Radiation Analysis of Methane- and Dust-Air Mixtures." Applied Sciences 12, no. 3 (2022): 1515. http://dx.doi.org/10.3390/app12031515.

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A review of the existing optoelectron monitoring devices revealed that the design of optoelectron detectors of the mine atmosphere does not sufficiently take into account the factor of external optical interference. This includes any extraneous source of thermal emission: a source of artificial lighting or enterprises. As a consequence, the optoelectron detectors -based safety systems currently installed at mining sites are not able to ensure properly the detection of the ignition source in the presence of optical interference. Thus, it is necessary to determine the working spectral wavelength

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27

Perestoronin, M. O., O. S. Parshakov, and M. D. Popov. "Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 8, no. 2 (2023): 150–61. http://dx.doi.org/10.17073/2500-0632-2022-10-13.

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Digital simulation of mine fires and explosions is an important stage in the process of developing technical solutions and measures aimed at improving the safety of personnel involved in underground mining. Correct simulation results determine the effectiveness of decisions in the event of an actual emergency situation. In this regard, due attention should be paid to each stage of the simulation, and especially to the initial stage of model parameterization. This study formulates a general principle for determining the parameters of mine fire and explosion models, in order to assess their deve

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28

Hongjiang, Guo, Lu Chang, Li Mingyue, Wang Wei, Li Shiwei, and Wang Di. "Experimental Study of the Weakening of Methane Explosion Shock Waves by Rotating Blades." Journal of Scientific and Engineering Research 11, no. 1 (2024): 12–21. https://doi.org/10.5281/zenodo.10620428.

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<strong>Abstract </strong>In order to investigate the weakening effect of the rotating blade on the methane explosion shock wave and the influence of the relevant parameter changes on the weakening effect, by changing the number of rotating blades and methane volume fraction to observe the rotating blade under the action of the methane explosion shock wave intensity and the explosion of the overpressure changes. The results show that: the rotating vane has a weakening effect on the methane explosion shock wave, mainly in the kinetic energy conversion and energy dissipation, and the increase in

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Zhang, Yimin, Yan Wang, Ligang Zheng, Tao Yang, Jianliang Gao, and Zhenhua Li. "Effect of Pristine Palygorskite Powders on Explosion Characteristics of Methane-Air Premixed Gas." Energies 11, no. 10 (2018): 2496. http://dx.doi.org/10.3390/en11102496.

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In this study, pristine palygorskite powders were used as the inhibition materials to suppress the explosion of methane-air premixed gas for the first time. The composition, porosity and pyrolysis characteristics of the powders were tested by X-ray diffraction (XRD), energy dispersive spectrometry (EDS), N2 adsorption-desorption and Thermogravimetry-differential scanning calorimetry (TG-DSC) techniques. The effects of pristine palygorskite powders concentration on the explosion pressure and the average velocity of flame propagation of the 9.5% methane-air premixed gas were tested by a 20 L sph

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Chen, Dianfu, Naifu Cao, Wei Li, and Chuanbo Cui. "Microcapsule Emergency Response Technology for Gas and Fire Coupling Sudden Disaster." Fire 7, no. 11 (2024): 399. http://dx.doi.org/10.3390/fire7110399.

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Aiming at the complex conditions of the coexistence of the explosive gases in the coal mines and the risk of spontaneous coal combustion, the effect of encapsulation, oxygen barrier and different microcapsules on methane and long-chain alkanes has been studied. A non-toxic microcapsule comprising the anti-explosion fire-extinguishing polymeric material with neutral pH value, biodegradability and full solubility in water has been developed. The fire-extinguishing platform system has been used to test and analyze the fire-extinguishing effect, explosion suppression efficiency and package efficie

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Zhang, Qi, Lei Pang, and Dachao Lin. "Numerical analysis of characteristics of the wind caused by methane-air explosion." Engineering Computations 31, no. 3 (2014): 490–500. http://dx.doi.org/10.1108/ec-12-2011-0161.

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Purpose – The high-velocity wind caused by a methane-air explosion is one of the important hazardous effects in explosion events of coal mines, and, however, until now it has not been received much attention from scientific works. The paper aims to discuss this issue. Design/methodology/approach – In consideration of the difficulties in observing particle velocities of high-velocity flows, this work presented a study to reveal the regularity during a methane-air explosion happening in the tunnel of coal mine through the numerical analysis approach. Findings – The strong wind caused by a methan

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Florea, Gheorghe Daniel, Emilian Ghicioi, Nicolae Ioan Vlasin, and Zoltan Vass. "Release of overpressures in computational simulations of air-methane explosions." MATEC Web of Conferences 373 (2022): 00043. http://dx.doi.org/10.1051/matecconf/202237300043.

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Research in the field of gas explosions has had and continues to have, as its main support, physical experiments performed on various scale models, the construction of real size models are often large consuming materials, time and labor. The rapid development of computing techniques has allowed among other things, the transfer of gas explosions research in the virtual space, for the validation of computational simulations of this type being still considered physical experiments and specialty literature. Within NIRD INSEMEX Petrosani, being an accredited institute in the elaboration of technica

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Zavyalova, E. L., and G. V. Zavyalov. "Development of Means for Localization of the Coal Dust Explosions." Occupational Safety in Industry 12, no. 12 (2022): 13–19. http://dx.doi.org/10.24000/0409-2961-2022-12-13-19.

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The aim of the research was to increase the speed of the device for localizing coal dust explosions to reliably suppress the fire front by creating a barrier from a cloud of fire extinguishing agent and, as a result, stopping the spread of an explosion in a mine working. The result is an increase in the safety of a mine personnel. In the paper, an integrated approach was applied, including the following: analysis and generalization of statistical data on explosions of the methane-air and dust-air mixtures in the mines of Ukraine; critical analysis of means of localization of explosions of coal

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Hang, Chaoyuan, Fei Liu, Kai Xin, et al. "Characterization of gas explosion shock wave propagation in long straight confined space." Journal of Physics: Conference Series 2791, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2791/1/012007.

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Abstract Currently, China is engaged in the construction of urban subterranean areas and the deployment of gas pipelines within these spaces. Nonetheless, the entry of gas into subterranean areas poses a definite threat of leaks and explosions. An explosion triggered by a gas pipeline leak will gravely compromise the underground space’s integrity and significantly affect nearby structures. Consequently, examining the spread properties of gas explosion shock waves in urban subterranean areas is essential. This document utilizes FLACS software to develop an extensive straight confined space gas

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Jing, Guoxun, Le Peng, and Lulu Mu. "Research on the propagation of pressure and CO gas of methane and coal dust coupled explosion." Thermal Science, no. 00 (2022): 12. http://dx.doi.org/10.2298/tsci211010012j.

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A methane and coal dust explosion system was constructed to investigate the propagation of pressure and CO gas after methane and coal dust coupling explosion. The influence of coal dust concentration on the propagation of pressure and CO gas were analyzed by coupling explosion experiments of 5% methane with coal dust (0, 100 g/m3, 200 g/m3, 300 g/m3, 400 g/m3and 500 g/m3), 7% methane with coal dust(0, 50 g/m3, 100 g/m3, 150 g/m3and 200 g/m3), and 9% methane with coal dust (0, 50 g/m3, 100 g/m3, 150 g/m3and 200 g/m3). The experimental results show that when 5% or 7% methane explodes with coal d

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Lei, Baiwei, Bing Wu, Yatong Zhao, and Muhammad Aqeel Ashraf. "Numerical Simulation and Experimental Study on Formation of High Concentration of H2 Generated by Gas Explosion." Polish Maritime Research 23, s1 (2016): 131–37. http://dx.doi.org/10.1515/pomr-2016-0057.

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Abstract In coal mine fire rescues, if the abnormal increase of gas concentration occurs, it is the primary thing to analyze the reasons and identify sources of the abnormal forming, which is also the basis of judge the combustion state of fire area and formulate proper fire reliefs. Nowadays, related researches have recognized the methane explosion as the source of high concentration of H2 formation, but there are few studies about the conditions and reaction mechanism of gas explosion generating high concentration of H2.Therefore, this paper uses the chemical kinetic calculation software, Ch

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Huang, Zichao, Rongjun Si, Guangcai Wen, Songling Jin, and Shaoqian Xue. "Experimental Study on the Isolation Effect of an Active Flame-Proof Device on a Gas Explosion in an Underground Coal Mine." Fire 6, no. 12 (2023): 468. http://dx.doi.org/10.3390/fire6120468.

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Passive explosion-isolation facilities in underground coal mines, such as explosion-proof water troughs and bags, face challenges aligned with current trends in intelligent and unmanned technologies, due to restricted applicability and structural features. Grounded in the propagation laws and disaster mechanisms of gas explosions, the device in this paper enables accurate identification of explosion flames and pressure information. Utilizing a high-speed processor for rapid logical processing enables judgments within 1 ms. Graded activation of the operating mechanism is enabled by the device.

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Zhang, Zeng Zhi, Hong Mei Xu, and Na Gu. "Research on the SDS + Castor Oil Aqueous Solution Used as Methane Absorption and Gas Explosion Suppression Material." Materials Science Forum 685 (June 2011): 264–71. http://dx.doi.org/10.4028/www.scientific.net/msf.685.264.

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A kind of water-based material which can absorb mine gas and suppress gas explosion was designed for the purpose of keeping the coal mine safe. The anionic surfactant sodium dodecyl sulfate (SDS) was used as the main gas absorbent according to the micelle solubilization of surfactant, and castor oil was used as absorption enhancer in this material. Methane was regarded as a model of mine gas. The volume fraction of methane absorption was measured by head space gas chromatography. The state of the aggregates in the material was observed by transmission electron microscopy. The explosion suppres

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Florea, Gheorghe Daniel, and Dan Codruț Petrilean. "Computational Simulation of Methane Ignition in Enclosed Spaces." Mining Revue 30, no. 1 (2024): 58–67. http://dx.doi.org/10.2478/minrv-2024-0006.

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Abstract In the research on gas explosions, the emphasis has been and continues to be primarily on physical experiments conducted on various scaled-down models. Building models at actual size is often a resource-intensive task in terms of materials, time, and human resources. The rapid advancement of computational techniques has allowed, among other things, the transfer of gas explosion research into the virtual environment. For validating computerized simulations of this kind, physical experiments and specialized literature are still considered fundamental. However, one of the challenges pose

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Gamera, Yu V., S. V. Ganaga, and Yu Yu Petrova. "On the matter of explosion safety of multicomponent mixture transportation facilities." Dependability 24, no. 4 (2024): 65–69. https://doi.org/10.21683/1729-2646-2024-24-4-65-69.

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Given the rapid development of the oil and gas industry, the matter of assessment of the explosion resistance of buildings and structures at multicomponent gas mixture transportation and processing facilities remains of relevance. The paper investigates the sensitivity to the initiation of explosive transformation of methane and air mixtures of hydrogen and methane homologues depending on the component composition. Estimates were obtained of the sizes of detonation cells of methane and hydrogen mixtures, which allows for a more accurate definition of the class of sensitivity to detonation.

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Qu, Zhi Ming. "Study and Analysis of Shock Wave Propagation in Excavation Laneway during Methane Explosion." Key Engineering Materials 439-440 (June 2010): 1450–55. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.1450.

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Coal mine can be damaged by extremely strong methane explosion, and the importance of suppressing anti-methane explosion in coal mine production safety is self-evident. The basic assumptions are used to analyze the shock wave propagation and the strength characteristics during methane explosion. The expressions among parameters in wave-front are derived during strong and weak shock wave propagation. Meanwhile, the cylinder shock wave overpressure parameter while propagating and attenuating with distance is deduced. In a certain distance away from the source location of explosion, the overpress

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Moiseeva, Ksenia M., Aleksey Yu Kraynov, Ruslan R. Tleulenov, and Natalia F. Florya. "Numerical modeling of flame interaction with mesh flame arresters." Himičeskaâ fizika i mezoskopiâ 27, no. 2 (2025): 202–13. https://doi.org/10.62669/17270227.2025.2.20.

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The problem of explosion-proof structures development has been relevant throughout the existence of the coal mining industry. A number of technological devices are used to combat fires and explosions. The aim of the work is to simulate the interaction of the methane-air mixture flame propagating in the channel with the elements of the VLZ-U "Start" barrier. A mathematical model of the interaction of the shock wave and flame during the explosion of methane-air mixtures with the barrier has been developed. The mathematical formulation of the problem consists of the conservation equations for the

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Torno, Susana, and Javier Toraño. "Methane Emission Outbursts in the Mine Face of Two Galleries: Computational Fluid Dynamics Analysis and On-Site Calibration." Energies 16, no. 21 (2023): 7298. http://dx.doi.org/10.3390/en16217298.

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Numerous cases of serious accidents related to methane outbursts exist worldwide. Due to their disastrous consequences, a vast quantity of research on underground gas explosions has been conducted using conventional models and laboratory tests, as performing studies at explosion sites is difficult. When conventional models are employed, the results are poor since these models are based on calculations at fixed times for a single point of a single section of an underground space. Computational fluid dynamics (CFD) analysis is necessary to calibrate these models, using measurements obtained in g

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du Plessis, J. J. L. "Active explosion barrier performance against methane and coal dust explosions." International Journal of Coal Science & Technology 2, no. 4 (2015): 261–68. http://dx.doi.org/10.1007/s40789-015-0097-7.

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BISSON, BARBARA. "Methane Gas Explosion During Colonoscopy." Gastroenterology Nursing 20, no. 4 (1997): 136–37. http://dx.doi.org/10.1097/00001610-199707000-00006.

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Nalysko, M., A. Makhinko, and S. Mamaienko. "Influence of initiation conditions of methane-air mixture on the explosion parameters in the degasation pipeline." Collection of Research Papers of the National Mining University 74 (September 2023): 33–45. http://dx.doi.org/10.33271/crpnmu/74.033.

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Purpose. Increasing the safety of personnel at underground works in case of the threat of gas explosions, including explosion of degassing pipelines by taking into account the influence of the place of initiation of the explosion and the mode of combustion when calculating the parameters of the explosion. Mathematical modeling of the process of ignition and combustion of the methane-air mixture in the degassing pipeline. Research methods. nalysis and generalization of theoretical studies, numerical simulation of gas-dynamic detonation combustion of a gas-air mixture, including a model of chemi

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Teterin, Ivan Alexandrovich, and Vladimir Anatolyevich Sulimenko. "Determination of methane-air cloud explosion parameters with considering the form of obstacles." Technology of technosphere safety, no. 101 (2023): 37–48. http://dx.doi.org/10.25257/tts.2023.3.101.37-48.

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Introduction. The development of the liquefied natural gas (LNG) market in the Russian Federation requires additional measures to ensure the fire and explosion safety of this segment of the economy. The issues of predicting the parameters of an explosion of a vapor-gas-air mixture of LNG require taking into account a large number of factors. The parameters of the explosion are significantly affected by obstacles in the path of the flame front propagation. Numerous studies of the effect of barriers have created a large theoretical base, however, there are no data that reflect the effect of the

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Kokoulin, Ivan, and Iryna Sapunova. "Principles of choosing a ventilation mode that reduces the risk of the development of an aerological emergency (on the example of a methane explosion)." Geo-Technical Mechanics, no. 169 (2024): 153–59. https://doi.org/10.15407/geotm2024.169.153.

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There are no methods for assessing all parameters of methane explosion when it is in the process, so there is a high risk of untimely undertaking of measures to prevent and eliminate the explosion. In addition, the sensors for measuring parameters of the mine atmosphere included in the existing control systems do not control the lower limit of the explosive concentration of methane. The purpose and tasks of the research are formulated. The methods by which these problems will be solved are determined. The concept of direct and indirect emergency risk factors is formulated. Namely: the direct f

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Wang, Qixiang, Zhang Zhigang, Zhongquan Li, et al. "Study on the thermal and mass evolution behavior of methane air premixed gas under rigid and flexible obstacles." Thermal Science, no. 00 (2024): 283. https://doi.org/10.2298/tsci240905283w.

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There has been a lack of public reports on the combustion and explosion risks under the coupling effect of different structural materials in coal mine tunnels. Therefore, this article uses a square pipeline with a cross-section of 0.01m2and a length of 1m to study the methane combustion and explosion process under different blockage rates and rigid and flexible obstacle arrangements, in order to fully reveal the impact of tunnel construction on explosions. The results indicate that when a rigid obstacle is in the forward position, the blockage rate of a flexible obstacle is positively correlat

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Deng, Jun, Jiao Qu, Qiu-Hong Wang, Yang Xiao, Yu-Chi Cheng, and Chi-Min Shu. "Experimental data revealing explosion characteristics of methane, air, and coal mixtures." RSC Advances 9, no. 42 (2019): 24627–37. http://dx.doi.org/10.1039/c9ra04416g.

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