Investigation of coupled control of gas accumulation and spontaneous combustion in the goaf of coal mine
Source abstract
Abstract
To control the gas accumulation and spontaneous combustion in goafs of coal mines, many measures such as airflow volume at the working face, gas extraction, and nitrogen injection in goafs have been taken. However, the principles of these measures contradict when controlling two hazards simultaneously. It is necessary to understand how the flow field in goafs is influenced by these measures. In this study, a mathematical model of the flow field in a goaf behind a u-type mechanized working face is established using the theory of porous media. The flow field in a goaf with the risk of gas accidents and spontaneous combustion was analyzed for different controlling measures. Taking the Daxing coal mine in Liaoning Province as an example, the main parameters, such as airflow volume, gas extraction, and nitrogen injection, were optimized based on the simulation results. These results are of great significance for the coupled control of gas accumulation and spontaneous combustion in goafs of coal mines.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Coal Properties and Utilization · Safety and Risk Management · Underground infrastructure and sustainability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Safety Science and Engineering, Liaoning Technical University, Huludao, Liaoning 125105, China
Key Laboratory of Mine Thermo-motive Disaster and Prevention, Ministry of Education, Huludao, Liaoning 125105, China
Funding
National Key Research and Development Program of China · Liaoning Talents Program Foundation · Natural Science Foundation of China · Liaoning Province Natural Science Foundation
References (35)
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