Research on the Evolution Characteristics of Airflow in Goaf with Roof Cutting and Pressure Relief
In order to study the changes in permeability and air flow characteristics of goaf under roof cutting and pressure relief,numerical simulation software was used to analyze the changes in air flow pressure and flow rate in goaf under traditional mining and roof cutting and pressure relief conditions.The air flow exchange and air flow rate in goaf were given for two scenarios.Through comprehensive comparison,it was found that the inflow and outflow airflow after top cutting pressure relief has been significantly improved compared to the traditional mode,effectively reducing the impact of air leakage and improving ventilation efficiency.This provides a certain basis for the promotion and application of top cutting pressure relief technology in the future.
numerical simulationwind flow transportcutting top pressure reliefairflow pressure
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