PHYSICAL MODELING OF NATURAL WIND AND ITS GUIDE IN A LARGE OPEN-PIT MINE

This paper describes a wind tunnel modelling study of wind field and a ir pollutant concentration in a large open pit mine, and briefly intro duces a preliminary study of guiding wind into the deep part of a pit. In this study, both a present pit and a projected final pit were mode lled. Speed profiles and concentration profiles were obtained. Guiding wind tests were also studied in the wind tunnel. The effects of wind guide were assessed. The recirculatory flow in the leeward side of the pit and the pollution problem were also discussed.