Fatal gas explosion accidents on Chinese coal mines and the characteristics of unsafe behaviors: 2000–2014

Yin, Wentao; Gui, Fu; Chun, Young-Soo; Jiang, Zhongan; Zhu, K. J.; Gao, Yan

doi:10.1016/j.ssci.2016.09.018

Cited by 167 publications

(80 citation statements)

References 11 publications

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“…When it mixes with air or oxygen in a certain concentration, it causes an explosion with the ignition source, even more, destructive detonation, and its adverse consequences are very serious. Economic loss may become a bottleneck, restricting the safe and efficient use of gas . Therefore, it is of great practical significance to study the explosion and propagation characteristics of low‐concentration gas in pipeline.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of low‐concentration gas explosion in large‐scale pipeline

Zhang

Liu

et al. 2020

Energy Science & Engineering

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Low‐concentration gas is one of the most realistic and reliable supplementary or alternative energy sources of conventional natural gas, which has a wide range of applications. However, this gas is flammable and explosive during pipeline transportation and easily causes an explosion. In order to achieve safe transmission, the explosion characteristics and propagation law of low‐concentration gas are systematically studied through a large‐scale pipeline experimental system. We found that the peak pressure of low‐concentration gas explosion in pipeline has a quadratic function relationship with the propagation distance. Moreover, the peak pressure of gas explosion initially decreases from the explosion source, and then a turning point appears after a certain distance of propagation, which is followed by a sharp increase of peak pressure of gas explosion. The explosion pressure becomes maximum at the outlets of a pipeline. The arrival time of explosion flame is logarithmically relevant to propagation distance, while the speed of flame propagation gradually increases along with the increase of propagation distance. The flame propagation is faster at the exit point. In addition, the diameter of pipeline has also an important influence on the explosion propagation process of low‐concentration gas. So, the larger the diameter, the higher the explosion pressure. The explosion pressure of DN700 pipeline is obviously higher than that of DN500, and the explosion pressure rises faster; the speed of flame propagation of gas explosion in DN700 pipeline is also higher than that in DN500 pipeline. This study provides a theoretical reference for the prevention and control of explosion accidents in low‐concentration gas pipelines.

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Section: Introductionmentioning

confidence: 99%

Experimental study of low‐concentration gas explosion in large‐scale pipeline

Zhang

Liu

et al. 2020

Energy Science & Engineering

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“…Yin et al. () analyzed the unsafe behaviors of gas explosions from three aspects: accident location, related craft, and equipment. Zhang, Cliff, Xu, and You () classified the characteristics of extraordinarily severe gas explosion accidents from the perspectives of gas accumulation, ignition sources, operating locations, accident time, coal mine region, and coal mine ownership.…”

Section: Introductionmentioning

confidence: 99%

Causation Analysis of Risk Coupling of Gas Explosion Accident in Chinese Underground Coal Mines

Zhang

You

et al. 2019

Risk Analysis

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The coal mine production industry is a complex sociotechnical system with interactive relationships among several risk factors. Currently, causation analysis of gas explosion accidents is mainly focused on the aspects of human error and equipment fault, while neglecting the interactive relationships among risk factors. A new method is proposed through risk coupling. First, the meaning of risk coupling of a gas explosion is defined, and types of risk coupling are classified. Next, the coupled relationship and coupled effects among risk factors are explored through combining the interpretative structural modeling (ISM) and the NK model. Twenty-eight representative risk factors and 16 coupled types of risk factors are obtained through analysis of 332 gas explosion accidents in coal mines in China. Through the application of the combined ISM-NK model, an eight-level hierarchical model of risk coupling of a gas explosion accident is established, and the coupled degrees of different types of risk coupling are assessed. The hierarchical model reveals that two of the 28 risk factors, such as state policies, laws, and regulations, are the root risk factors for gas explosions; nine of the 28 risk factors, such as flame from blasting, electric spark, and local gas accumulation, are direct causes of gas explosions; whereas 17 of the risk factors, such as three-violation actions, ventilation system, and safety management, are indirect ones. A quantitative analysis of the NK model shows that the probability of gas explosion increases with the increasing number of risk factors. Compared with subjective risk factors, objective risk factors have a higher probability of causing gas explosion because of risk coupling.

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“…Although the Chinese government has been strengthening the prevention and control of coal mine gas accidents, gas accidents still account for a large proportion of major coal mine accidents [1]. Gas is derived from coal bed methane (CMM).…”

Section: Introductionmentioning

confidence: 99%

Simulation of Ground Stress Field and Advanced Prediction of Gas Outburst Risks in the Non-Mining Area of Xinjing Mine, China

Wang

et al. 2018

Energies

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Abstract:In order to predict in advance the coal and gas outburst risks in the No. 3 coal seam in the non-mining area of the Xinjing mine, the strata were divided into seven rock assemblage types based on the lithologic characteristics of strata in the research area, and eight geological profile models were constructed. The finite element methods were used to simulate the ground stress field of the No. 3 seam floor. Based on the log curve, the coal structural type of the No. 3 coal seam was identified, with the thicknesses of the coal body under different types of damage being marked off in each borehole. A damage index of the coal structure (DV) was also proposed, and the DV indexes for all boreholes were calculated. The coal and gas outburst risks in the research area were comprehensively evaluated and predicted through a superposition analysis of the spatial distribution states of three indexes, namely: ground stress, coal structure damage degree, and coal seam gas content. The results show that the equivalent stress of the No. 3 coal seam floor is usually within the range of 9-26 MPa. The high-stress zone presents a strip distribution along the northeast-southwest (NE-SW) direction. The distribution of ground stress is mainly subject to the folds and buried depth of the coal seam. The distribution range where the damage degree of the coal structure falls under Types II and III is DV ≥ 22. The gas outburst risk in the mid-southern and northeastern parts of the research area is high, whereas that in the mid-western part is low. The zones with a high and low degrees of gas outburst risks are all mainly present as strips in the NE-SW direction. The gas outburst risk in the northwest and southeast is moderate. The research results can provide guidance for gas control in non-mining areas.

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Fatal gas explosion accidents on Chinese coal mines and the characteristics of unsafe behaviors: 2000–2014

Cited by 167 publications

References 11 publications

Experimental study of low‐concentration gas explosion in large‐scale pipeline

Experimental study of low‐concentration gas explosion in large‐scale pipeline

Causation Analysis of Risk Coupling of Gas Explosion Accident in Chinese Underground Coal Mines

Simulation of Ground Stress Field and Advanced Prediction of Gas Outburst Risks in the Non-Mining Area of Xinjing Mine, China

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