Study On Heat Harm Investigation And Treatment Technology Under Mining In Deep-lying Conditions In JiNing 2～(nd) Coalmine

Ground temperature going up is a geologic hazard problem that can't get arounding in deep mining. Under deep mining conditions, The raise of ground temperature is a fundamental cause of working condition getting bad under well, A continuous hot temperature will cause significant damage to the personnel's health and capacity for work, make labour productivity descend greatly and productive accident increase greatly, at the same time , would still decline the work function and descend the service life of the equipments under well.The 9^th mining area in JiNing 2^nd coalmine the mining depth attains 700m above, the temperature of virgin rock of coal seam which is mined is all over and above 30 ℃, belongs to the first grade hot temperature zone. The second level of rock temperature attains 38 ～ 42 ℃ , belongs to the second grade hot temperature zone. Therefore, while mining we must make a comparatively right prediction on the distribution pattern of ground-temperature field of nine working area, and can evaluate the degree for heat harm of high temperature which is caused by mining. This paper opened a research on this, surrounding the survey of heat harm and treatment technology of the JiNing 2^nd coalmine mining in deep-lying and according to the geologic characteristic of working area, the author analyzed some factors that influent temperature of virgin rock, studied and perfected synthetically test and measuring technique on mine ground temperature field, and adapt the gradient method, utilized gray series to establish relevant mathematical model, at last, got the regularities of distribution of temperature field of virgin rock about the 9^th mining area in JiNing 2^nd coalmine. Analyzed...