近年来煤田勘探中研究煤层可选性方面出现了可喜的进展。一些单位在精查中利用多组探煤钻孔采取煤层简易可选性样。做简化流程试验,从面上研究煤层可选性变化,提高了评价精度,受到煤矿设计部门的欢迎。四川、江西等煤田地质研究所用煤岩学方法做煤层可选性研究的尝试,取得了除粒 In recent years, coalfield exploration in the study of coal seam selectivity has made encouraging progress. Some units in the investigation using multiple sets of coal drilling holes to take a simple optional coal seam samples. To simplify the flow test, from the surface to study the change of seam selectivity, improve the evaluation accuracy, by the coal mine design department’s welcome. Sichuan, Jiangxi and other coal geological research Institute of coal seams using coal-rock method to make an optional study, and achieved the addition to grain