Abstract:On-site testing of the natural wind pressure at Xinhui Gold Mine, which is in the infrastructure phase, to obtain summer and winter natural wind pressure values. The natural wind pressure exchange in deep well was numerical simulation by FLUENT software. Through orthogonal simulation experiments, influence of incoming air temperature, heat source heat, geothermal gradient and relative humidity on the natural wind pressure in deep wells was discussed. The influence degree of each factor on the natural wind pressure of deep wells was as follows: winter: incoming air temperature＞heat source heat＞geothermal gradient＞relative humidity; summer: heat source heat＞incoming air temperature＞geothermal gradient＞relative humidity. The orthogonal experimental data and the measured data were fitted by SPSS software, and a calculation model of the natural wind pressure in deep wall of Xinhui Gold Mine was established, which provides reference for the design of the ventilation system and the fan selection in the deep mine area of Xinhui Gold Mine.

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