Analyze Of Mines' Thermodynamics And Determination Of Ventilation Limit Depth Of Dongtan Mine

With the increasing of mining depth and exothermic function and diffusion progress of every kinds of heat source and so on, the heat damage of mines is becoming serious. Therefore, how to improve the climate situation of mines, prevent the heat damage and ensure the safety production are the pressure tasks which are needed in safety production. The paper discusses the environment parameters of mines particularly, analyzes gases, determines the ground temperature and analyzes the sorts of heat damage particularly. The paper also introduces the concept of degree of heat comfort of miners, establishes equation of degree of heat comfort, assesses the heat environment and finally determines the ventilation limit depth of mine by using the forecast model.Firstly, the paper introduces the inside and outside research actuality of reducing temperature skills in mines in brief, analyzes the situation of high temperature in DongTan Mine and points out the essentiality and significance of this task. The high temperature of mine embodiments a estate of environmental climate in mines at present. To prevent heat damage, we should research the environment parameters in mines. Then, the paper analyzes the diversification rules of climate parameters on the ground and under the mines, getting the affective factors of climate situation in DongTan Mine. There, the temperature and humidity in climate parameters on the ground have remarkable effect on climate parameters under the mine. The paper assesses the affective factors of degree of heat comfort by using the ameliorated fuzzy gray associated analyze. Later, the paper introduces the measure of mines' ground temperature and gets the ground temperature of DongTan Mine in brief. The test introduces calculate methods of every kinds of heat source, getting the proportions over against the total heat source of every kinds of heat source. It discusses weightily the heat balance mechanism of man body, establishes equation of degree of heat comfort, measures the heat balance parameters of workers in scene and then gets the degree of heat balance. It also study the effect which high temperature affects to physiological function of human, the effect including: high temperature affects to colliers' body temperature, nervous system, cardiovascular system, heat balance, breathing system and excretion system. The test grades and analyzes the labor intensity and establishes index of heat environment in mines. Finally, we forecast and calculate the mines' temperatures in different places, establish the forecast procedure of mines' temperatures, forecast the mining depth by simulating laneway wind path method and confirm the ventilation limit depth of mine of DongTan Mine.