Design of 3D Simulation System for Natural Ignition Law in Gob Area of Multi-source and Multi-sink

In order to comprehend the law of spontaneous combustion in "multi-source and multi-sink" goaf of coal mine, and to provide the basis for the prediction of early fire in goaf, the division of three zones of spontaneous combustion in goaf and the formulation of technical measures for fire p...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-05, Vol.495 (1), p.12041
Main Authors: Wang, Qing, Li, Weilong, zhang, Canming
Format: Article
Language:English
Subjects:
Coal
Coal mines
Coal mining
Combustion
Conservation equations
Energy conservation
Fire prevention
Gas temperature
Mathematical analysis
Mathematical models
Simulation
Spontaneous combustion
Temperature distribution
Work face
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Summary:In order to comprehend the law of spontaneous combustion in "multi-source and multi-sink" goaf of coal mine, and to provide the basis for the prediction of early fire in goaf, the division of three zones of spontaneous combustion in goaf and the formulation of technical measures for fire prevention and extinguishing, a three-dimensional simulation system of spontaneous combustion law in goaf of "multi-source and multi-sink" coal mine is designed in this paper. The system uses energy conservation equation, Fick's law and mass conservation law to establish multi-source and multi-sink goaf flow field, oxygen concentration field, gas temperature field and caving coal and rock temperature field coupled mathematical model. The model is solved and programmed by using VB language mathematical model, which realizes the visual display of simulation results. The system is used to simulate the II929 mined-out area of Luling Mine, and good application results are obtained. The system has good operability and improves the calculation efficiency. It provides theoretical support for the prevention and control of spontaneous combustion in goaf of "multi-source and multi-sink" working face.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/495/1/012041