陈召煤矿外围区块可采煤层煤质特征及开采技术评价

Coal quality characteristics and mining technology evaluation of minable coal seams in peripheral blocks of Chenzhao Coal Mine

基于陈召煤矿外围区块地质勘探资料和实验测试结果,对研究区内主要可采煤层的煤岩特征、工业分析、工艺性能及简易可选性等煤质特征进行剖析,并对主要可采煤层的开采技术条件开展评价。结果表明,研究区内主要可采煤层的宏观煤岩类型主要为半亮—光亮型,显微煤岩类型为微镜煤为主,次为微镜惰煤;一_(5)和二_(1)煤属中灰、低挥发分、中—中高硫、中—高热值无烟煤;一_(5)和二_(1)煤为较稳定煤层,一_(5)煤局部可采,二_(1)煤全区可采。评价了研究区的水文地质、工程地质及瓦斯、煤尘爆炸性、煤的自燃倾向性等开采技术条件,对煤矿安全开发较有利。

Based on the geological exploration data and experimental test results of the peripheral blocks of Chenzhao Coal Mine,the coal rock characteristics,industrial analysis,process performance and simple washability of the main mineable coal seams in the study area were analyzed,and the mining technical conditions of the main mineable coal seams were evaluated.The results show that the macroscopic coal-rock types of the main minable coal seams in the study area are mainly semi-bright-bright,and the microscopic coal-rock types are mainly micro-mirror coal,followed by micro-mirror inert coal.I5 and II1 coal belong to medium ash,low volatile,medium-medium high sulfur,medium-high calorific value anthracite;the No.1-5 and No.2-1 coal seams are relatively stable coal seams.The No.1-5 coal seam is locally recoverable,and the No.2-1 coal seam is recoverable in the whole area.The hydrogeological,engineering geology,gas,coal dust explosion,coal spontaneous combustion tendency and other mining technical conditions in the study area are evaluated,which are beneficial to the safe development of coal mines.