Study On Heat-calamity Forecast Model In Drivage Roadway Of Deep Shaft

With the increase of mining depth, the mine heat-calamity of our country shows two basic situation: one is that heat-calamity mine becomes more and more, and the other is that heat-calamity of the single mine becomes more and more serious. It is not only threatening the physical and mental health of the miners, reduce the efficiency of them, but also leading to mine safety accidents easily. Therefore, analyzed the cause of coal heat-calamity, grasped its influencing factors and principles, set up the heat-calamity prediction methods of deep shaft, so as to take effective cooling measures, alleviate the high-temperature situation, improve the miners' operating environment, all of these become extremely pressing, and have important practical significance.This paper targeted drivage roadway to study object, used mathematical analysis methods, applied the Principle of thermodynamic and heat transfer, firstly, analysised the heat source and its affect in deep mine detailed, and according to heat balance of laneway's heat exchange process, established the heat balance differential equation of air flow in the laneway; And then based on this equation, combined the actual features of drivage roadway, analysised its heat exchange process, established the heat balance equation of air flow in drivage, Solved the calculation model of the ventilator's outlet, windsail's outlet and drivage head; Finally, as G₂₀-21010 laneway in PingMei an example, calculated the air temperature of each Section, and contrasted with the measured data, authenticated the reliability of heat-calamity prediction model.