Analysis on the Permeability of Coal Measures by the Use of Borehole Logging Data
详细信息
- 责任者：Li Hongyan (Mine Safety Technology Branch ; China Coal Research Institute ; Beijing 100013 ; China) ; Wang Weihua
- 刊名：Coal Geology & Exploration
- 出版年：2013
- 卷期：41(4)
- 关键词：测井曲线 ; logging curves ; 煤层 ; coal seam ; 渗透性 ; permeability
- 页码：p.18-21
- 图表：illus., 3 tables, 11 refs.
- 分类号：1600
- issnNo：ISSN1001-1986
- isbnNo：CN61-1155/P
摘要
Analysis of the permeability of coal measures effected by mining with the help of TV borehole imaging can be significant for reasonable layout of gas drainage hole system.Geophysical logging data(gamma,density) obtained from boreholes can be used for evaluating formation boundaries,shale contents,interlayer and weak layers.The permeability in the study area is different when working face advances.Overlying strata failure height can be made sure by permeability calculated by logging data and borehole television.Conclusion can be obtained as follows: the location of formation boundaries,shale contents,interlayer and weak layers can be confirmed in original logging data,increased permeability area evolves from formation boundaries between shale,claystone and other strata and original fracture zone to interlayer of pure strata and weak layers after mining;caved zone depth is 433 m and fractured zone depth is 382 m.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |