坑内気流温度の予測計算法

Abstract

At present, one of the most urgent problems of deep level mining in Japan is to improve its hot air conditions so that miners can do efficient work healthfully. As everybody knows we can deal with such environments by increasing the quantity of air in circulation or by applying air cooling equipment to such workings. In order to take measures to meet these situations and put in practice an optimum ventilation, it is indispensable to estimate underground air temperature and to judge the general effect of the estimation quickly and correctly about various ventilation plans which may be suggested in a mine.The author has studied for several years on an air temperature forecast technique in underground. Making these studies complement and apply to real underground temperature problem, the technique was developed to calculate the mean air temperature for voluntary lapse of time and the temperature amplitude for the steady periodic variation of surface atmosphere. The model used in this study is adopted the mechanism of heat transfer between air current and surrounding rock and is disregarded other minor factors. This paper gives a general procedure to forecast the air temperature in an intake ventilation system. The procedure consists of many same iterative computation, so that the utilization of a digital computer is effective.