Study on Parametric and Numerical Simulation of Local Forced Ventilation

Abstract Resource's depletion led to that part of the old mine efforts to explore the new substituted resources in the peripheral or at the deeper region. These bring about the practicable need to forced ventilation technology of the long-distance heading face. Based on pre-processing software GAMBIT, three-dimensional computational model of the far-pressing-near-absorption has been set up. By using the commercial CFD software FLUENT, airflow organization of long heading face under the far–pressing-near-absorption local ventilation model has been simulated. According to this, the paper has elaborated the internal mechanism of the far-pressing-near-absorption local ventilation model, and has analysis the ventilation effect of the classic ventilation features model. Studies have shown that: In local forced ventilation mode of the long duct exhaust and short duct forced, the scope of jet was significantly greater than that of exhaust. Duct location layout according to the classic effective parameters ranges of forced and exhaust is not conducive to the heading face dirty winds rapidly carry out. The value of speed at the center of laneway was fluctuated and dual-controlled by forced and exhaust. The air volume difference of forced and exhaust determines dirty wind carry out time and air quality within the entire laneway. The purpose of this study is providing theoretical basis and practical guidance to further parameter optimization study on local forced ventilation technology of the long-distance heading face.