Numerical Simulation Study of Goaf Methane Drainage and Spontaneous Combustion Coupling

Li, Zongxiang; Zeng, Lu; Wu, Qiang; Ai-ran, Zhang

doi:10.1016/s1006-1266(07)60134-5

Cited by 24 publications

(13 citation statements)

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“…Furthermore, it has also been shown that the advancing speed of the coal seam working face and the layout of the ventilation tunnel also have an impact on the airflow distribution. Liu (2014) explored the effects of factors such as propulsion speed and ventilation volume of different working faces on the oxygen concentration field and temperature field through simulation. Brodny and Tutak (2018) considered the effect of working face ventilation on the gas flow in the mined-out area and found that the further away from the longwall working face, the smaller the airflow velocity in the mined-out area through numerical simulation.…”

Section: Multiphysics Coupling Mechanismmentioning

confidence: 99%

Combustion mechanism and control approaches of underground coal fires: a review

Liang

Yang

Guo

et al. 2023

Int J Coal Sci Technol

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With the large-scale mining of coal resources, the huge economic losses and environmental problems caused by underground coal fires have become increasingly prominent, and the research on the status quo and response strategies of underground coal fires is of great significance to accelerate the green prevention and control of coal fires, energy conservation and emission reduction. In this paper, we summarized and sorted out the research status of underground coal fires, focused on the theoretical and technical issues such as underground coal fire combustion mechanism, multiphysics coupling effect of coal fire combustion, fire prevention and extinguishing technology for underground coal fires, and beneficial utilization technology, and described the latest research progress of the prevention and control for underground coal fire hazards. Finally, the key research problems in the field of underground coal fire hazards prevention and control were proposed in the direction of the basic theory, technology research, comprehensive management and utilization, with a view to providing ideas and solutions for the management of underground coal fires.

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Section: Multiphysics Coupling Mechanismmentioning

confidence: 99%

Combustion mechanism and control approaches of underground coal fires: a review

Liang

Yang

Guo

et al. 2023

Int J Coal Sci Technol

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“…As described in previous chapter, the radiating zone boundary is difficult to determine by using the oxygen distribution curve. In this research, the numerical simulation by FLUENT [19,20] was taken into account to assist in drawing the boundary.…”

Section: Goaf Air Flowmentioning

confidence: 99%

A Study on Preventing Spontaneous Combustion of Residual Coal in a Coal Mine Goaf

Wang

Zhang

Sugai

et al. 2015

Journal of Geological Research

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The effectiveness of grouting scheme has been simulated to prevent the coal spontaneous combustion at a goaf in Haizi Colliery, China. The colliery has been operated for long period over 27 years and has a complex ventilation network including airflow leakages which could possibly lead to the spontaneous combustion of coal at goafs. Firstly, the mine ventilation simulator MIVENA was used to analyze the mine ventilation network airflows to control airflows in and out of working faces and goafs. As the second approach, numerical simulations were carried by the simulator FLUENT in order to predict spontaneous combustion of residual coal with leakage flow in the #3205 goaf. It was cleared that the goaf can be divided into three zones based on oxygen concentration in the goaf area. Finally, the numerical simulation results show that the slurry grouting method is able to be an effective and economical method by reducing porosity in the goaf area to prevent spontaneous combustion of residual coal.

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“…Through the reasonable arrangement of sensors, the seismic wave signals generated by the deformation and fracture of rock mass caused by excavation are converted into electrical signals, and the location and energy of the fracture can be obtained by using the time difference and signal intensity of the same signal arriving at different sensors. Many domestic scholars have used this technology in mine impact ground pressure and mine water disaster prevention [15][16][17] , but most of which has great technical difficulties in field measurement.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Height of Fracture Zone in Goaf of Steep Coal Seam Based on Microseismic Monitoring

Yang

Liu

Huang

et al. 2023

J. Phys.: Conf. Ser.

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The height of the fracture zone in the mined-out area is the basic parameter for controlling mine strata, preventing and controlling mine water, and arranging drilling holes for high-level gas extraction. Aiming at the development law of fracture zone in the steep seam and the limitation of traditional drilling inspection method, microseismic monitoring technology is used to investigate the height of fracture zone in goaf. Taking the 3103 south working face of a mine in Sichuan as an example, the scheme of microseismic monitoring and data collection of the working face is worked out. Through data analysis and processing, the range of the fracture zone in the goaf is 6.8 m– 34.2 m, and compared with the numerical simulation analysis results, the relevant results are basically consistent. It provides a new technical means for the investigation of “three zones” of overlying strata in the goaf of a steep seam.

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Numerical Simulation Study of Goaf Methane Drainage and Spontaneous Combustion Coupling

Cited by 24 publications

References 0 publications

Combustion mechanism and control approaches of underground coal fires: a review

Combustion mechanism and control approaches of underground coal fires: a review

A Study on Preventing Spontaneous Combustion of Residual Coal in a Coal Mine Goaf

Investigation on the Height of Fracture Zone in Goaf of Steep Coal Seam Based on Microseismic Monitoring

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