Simulation of Air Temperature Changes in Vietnamese Underground Coal Mines using Ventsim Design Software

Abstract

As underground coal mines in Vietnam, Poland, and globally operate at increasing depths and implement more mechanized systems, the resulting rise in air temperature poses significant challenges for underground climate control. High production intensity, powerful machinery, and deeper mining levels contribute to the thermal load within the mine environment. Poor climatic conditions in mine workings directly affect miners’ health and safety and may limit operational effectiveness. This study explores the application of Ventsim Design software to model and predict air temperature changes in longwall faces of Vietnamese underground coal mines. Based on input parameters such as production intensity, rock mass characteristics, and installed heat sources, temperature simulations were conducted for selected workings in Khe Tam and Nam Mau mines, specifically in the TT - 11 - 6 and I - 5 - 11 regions. The modeling results demonstrate how digital tools can support the optimization of mine ventilation systems and ensure thermal comfort and compliance with occupational safety standards. The flexibility and visualization capabilities of Ventsim Design make it a valuable asset for mine climate management teams. This paper highlights key findings and provides recommendations for implementing such modeling practices as part of regular safety and environmental strategies in underground mining operations.