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根据墨契科煤矿1979年～1983年五年间的回采资料,对用长壁工作面开采时发生的火灾危险等级变化情况进行了研究。用于可燃基挥发分的数量能最充分地评价煤层的碳化程度,墨契科各矿的可燃基挥发分平均值为20～35%。煤的活化能变化在40～70kJ/mole 之间。曾对别契巴尼亚矿、瓦沙什矿、别塔矿、阔苏特矿和卓巴科矿214个采区资料进行了统计加工。其中有:薄煤层(M<4m)的单一分层回采,厚煤层的多分层开采
According to the reclamation data of the coal mined coal mine from 1979 to 1983 in the coal mines, the changes of the fire hazard level in the mining of the longwall face were studied. The amount of combustible-based volatiles used can most adequately evaluate the degree of carbonization of coal seams. The average volatile content of combustible groups in each mine in Mexico is 20-35%. The activation energy of coal changes between 40 ~ 70kJ / mole. The statistics of 214 mining areas at Beibiya Mine, Washashi Mine, Beita Mine, Kuosu Mine and Zhuobacuo Mine have been processed. Among them are: Single Stratified Mining in Thin Coal Seam (M <4m), Multi-Stratified Mining in Thick Seam