阜康矿区煤的孔隙与裂隙特征

发布时间：2018-03-07 15:54

本文选题：阜康矿区　切入点：孔隙　出处：《煤田地质与勘探》2017年02期 　论文类型：期刊论文

【摘要】：煤的孔隙与裂隙是煤层气赋存的空间也是煤层气运移和产出的通道。在新疆阜康矿区三工、建江等7对矿井巷道煤层裂隙观测统计的基础上,采用宏观煤岩分析、显微煤岩分析、压汞实验与煤的孔隙结构分析等方法,研究阜康矿区煤层孔隙与裂隙特性,评价煤层气赋存特征与渗透性。结果表明:阜康矿区煤层孔隙发育以微孔和小孔为主,孔容和比表面积较大,有利于煤层气的吸附和解吸;裂隙发育具有非均质性,矿区西部裂隙最为发育,东部次之,中部不发育;煤岩组分中镜质组的增加会使微小孔增多,有利于煤层气的吸附;中孔孔容对孔隙度具有控制作用;阜康矿区煤层的孔隙率随着镜质体反射率的增大呈增大的趋势。研究结果对新疆阜康矿区煤层气的勘探开发具有一定的理论指导意义。
[Abstract]:The pore and fissure of coal is the space of coalbed methane occurrence and the passage of coal bed methane migration and production. Based on the observation and statistics of seven pairs of coal seam fractures in coal roadway in Fukang mining area, Xinjiang, the macroscopic coal rock analysis is adopted. The pore and fracture characteristics of coal seam in Fukang mining area are studied by means of microscopic coal rock analysis, mercury injection experiment and pore structure analysis of coal. The characteristics of coalbed methane occurrence and permeability are evaluated. The results show that the porosity of coal seam in Fukang mining area is mainly micropore and pore, the pore volume and specific surface area are large, which is favorable to the adsorption and desorption of coalbed methane, and the fracture development has heterogeneity. The fractures in the west of the mining area are the most developed, the second is in the east, and the middle part is not. The increase of vitrinite in the coal and rock components will increase the number of tiny pores, which is favorable to the adsorption of coalbed methane, and the mesoporous volume can control the porosity. The porosity of coal seam in Fukang mining area is increasing with the increase of vitrinite reflectance. The results of the study are of theoretical significance to the exploration and development of coalbed methane in Fukang mining area, Xinjiang.
【作者单位】：河南理工大学安全科学与工程学院;河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地;淮南矿业(集团)有限责任公司朱集东煤矿;中原经济区煤层(页岩)气河南省协同创新中心;
【基金】：国家科技重大专项课题(2011ZX05040-005) 河南省高校科技创新团队支持计划(14IRTSTHN002)~~
【分类号】：P618.13

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