Study on the Parameter Equation of Coal and Gas Outburst Hole

Studying the parameters of a coal and gas hole (CGOH), such as the hole shape, hole size and volume, coal quantity of CGOH, coal throw distance, calculated hole density, and gas pressure, is helpful in revealing the coal and gas outburst mechanism. In this study, we found that there were close mathe...

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Bibliographic Details
Published in:Shock and vibration 2021, Vol.2021 (1)
Main Authors: Wang, Fei, Yang, Yuzhong, Wu, Liyun, Meng, Han, Peng, Lei
Format: Article
Language:English
Subjects:
Blowholes
Casualties
Coal gas outbursts
Coal mining
Composite functions
Dumping
Explosions
Extrusion
Fatalities
Gas pressure
Gases
Hole density
Hole size
Hypotheses
Parameters
Simulation
Stagnation point
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Summary:Studying the parameters of a coal and gas hole (CGOH), such as the hole shape, hole size and volume, coal quantity of CGOH, coal throw distance, calculated hole density, and gas pressure, is helpful in revealing the coal and gas outburst mechanism. In this study, we found that there were close mathematical relationships between these parameters. A nonlinear composite function relationship (CGOH parameter equation) was observed between the coal quantity, CGOH volume, and throw distance. The correctness of these relationships was verified using the Origin software. The stagnation point and inflection point of the parameter curve were obtained through the derivation of the parameter equation, and the transformation path from coal and gas outburst to coal and gas extrusion or dumping was clarified. At the same time, the equations of gas pressure, coal quantity, and throw distance are derived.
ISSN:1070-9622
1875-9203
DOI:10.1155/2021/5527250