构造煤分布规律及对煤与瓦斯突出的影响

摘要

通过对四川省主要矿区内晚二叠世和晚三叠世2个含煤地层中的构造煤进行研究,认为构造煤在不同构造位置、不同时代及不同煤层的分布有很大差别,构造煤的分布总体表现出分区性和选层发育的特点:盆地内部受构造应力作用较弱,是煤体结构破坏程度较弱的区域,挤压构造带内最厚的煤层构造煤最为发育.分析四川省煤与瓦斯突出资料,得出构造煤最发育的区域和层位,也是煤与瓦斯突出最严重的区域和层位.煤体结构及构造煤的发育程度对煤与瓦斯突出起着重要的控制作用.%With the study on the structure coal in the coal bearing stratum of Late Permian and Late Triassic in Sichuan main coal mining area,there were big differences of structure coal in different structure location,different age and different seam distribution and the structure coal distribution generally showed the divided zone and selected layer development features.The structure stress role affected to the inner part of the basin was weak.it was the zone with less failure degree to the coal structure.The thickest seam structure coal within the congressional structure zone would be the best developed.Analyzed the information of coal and gas outburst in Sichuan Province,the most developed area and layer of the structure coal was obtained,and it would be the serious area and layer of coal and gas outburst.The development degree of the coal structure and structure coal would have important control role to the coal and gas outburst.