The prognosis of the climatic hazard for the growing depth of underground mining

SUMMARY: Together with the growth of depth of underground mining and the progressing concentration of production grows the climatic hazard. Early prognosis of this threat permits to choose suitable techniques and air-conditioning methods already in the stage of designing the exploitation of the deposit. In this work it is shown how the primal temperature of rock changes and the climatic hazard rises with the growth of depth of underground working. It is also explained how the polish regulations define “climatic hazard”, the methods of improvement of the climatic conditions are introduced as well as is the prognosis of demand on cooling power.