采掘煤层底板岩层微观孔隙结构及其分形特征  

Microscopic Pore Structure and Fractal Characteristics of Floor Rock in Mining Coal Seams

作　　者：陈博 王心义[1,2,3] 武占辉 Chen Bo;Wang Xinyi;Wu Zhanhui(College of Resources and Environment,Henan University of Technology,Henan Jiaozuo 454000;Henan Collaborative Innovation Center for Coal Seam(Shale)Gas in Central Plains Economic Zone,Henan Jiaozuo 454000;A Collaborative Innovation Center for Safe Production and Clean and Efficient Utilization of Coal Built by the Provincial and Ministerial Departments,Henan Jiaozuo 454000)

机构地区：[1]河南理工大学资源环境学院,河南焦作454000 [2]中原经济区煤层(页岩)气河南省协同创新中心,河南焦作454000 [3]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454000

出　　处：《山东煤炭科技》2022年第7期168-173,共6页Shandong Coal Science and Technology

基　　金：国家自然科学基金(41802186、41972254);河南省创新型科技人才队伍建设工程(CXTD2016053);河南省高校基本科研业务费专项资金(NSFRF200103)资助。

摘　　要：为确定煤层底板各岩层微观孔隙本质的复杂程度,提升煤炭开采利用价值,以平顶山煤田石炭系煤层底板岩层为例,通过低温氮气吸附实验,对各岩石的微观孔隙结构进行表征。以实验数据为基础,建立孔隙结构体积分形模型,得出砂岩的孔隙结构复杂程度最大,泥岩最小,认清了煤层底板各岩层微观结构的复杂变化特征。In order to determine the complexity of the microscopic pore nature of each rock layer in the coal seam floor and enhance the value of coal mining and utilization,taking the floor strata of Carboniferous coal seams in Pingdingshan coalfield as an example,the microscopic pore structure of each rock was characterized by low temperature nitrogen adsorption experiment.Based on the experimental data,the fractal model of pore structure volume is established.It is concluded that the complexity of the pore structure of sandstone is the largest and that of mudstone is the smallest,which clearly recognizes the complex changing characteristics of the microstructure of each rock layer on the coal seam floor.

关 键 词：孔隙结构 氮吸附 分形 复杂程度 

分 类 号：P618.11[天文地球—矿床学]