Numerical Study on Stress Relief and Fracture Distribution Law of Floor in Short-Distance Coal Seams Mining: A Case Study
Sign Up to like & getrecommendations! Published in 2020 at "Geotechnical and Geological Engineering"
DOI: 10.1007/s10706-020-01502-3
Abstract: During the mining process of short distance coal seams group with high gas content, excavation of the protective coal seam will result in stress relief and fracture development which provides pathways for gas migration. Gas… read more here.
Keywords: relief; fracture; coal seams; gas ... See more keywords
Geochemical characteristics of n-alkanes and isoprenoids in coal seams from Zhuji coal mine, Huainan coalfield, China, and their relationship with coal-forming environment
Sign Up to like & getrecommendations! Published in 2018 at "Environmental Science and Pollution Research"
DOI: 10.1007/s11356-017-0970-6
Abstract: Ten coal seams in Upper Shihezi Formation, Lower Shihezi Formation, and Shanxi Formation from the Zhuji mine, Huainan coalfield, China, were analyzed for n-alkanes and isoprenoids (pristine and phytane) using gas chromatography-mass spectrometry (GC-MS), with… read more here.
Keywords: coal seams; coal forming; coal; environment ... See more keywords
Shaft failure characteristics and the control effects of backfill body compression ratio at ultra-contiguous coal seams mining
Sign Up to like & getrecommendations! Published in 2018 at "Environmental Earth Sciences"
DOI: 10.1007/s12665-018-7641-x
Abstract: Solid backfill coal mining is a mainstream method in green coal mining, which has gradually become a key technology to control shaft deformation when recovering industrial square pillars during mining of ultra-contiguous coal seams. On… read more here.
Keywords: backfill body; coal seams; deformation; coal ... See more keywords
Evolution of coal-bed methane in Southeast Qinshui Basin, China: Insights from stable and noble gas isotopes
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DOI: 10.1016/j.chemgeo.2019.119298
Abstract: Abstract The late Carboniferous-early Permian coal seams of the Qinshui Basin in Shanxi Province are the most prolific producer of coalbed methane (CBM) in China. Methane formed in the late Triassic during deep burial and… read more here.
Keywords: coal seams; qinshui basin; gas; methane ... See more keywords
Sequence stratigraphic interpretation of peatland evolution in thick coal seams: Examples from Yimin Formation (Early Cretaceous), Hailaer Basin, China
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2018.07.013
Abstract: Abstract Peat formed in mire settings sensitively records environmental fluctuations during deposition including changes in water table or base level and accommodation. On this basis coal seams, as geologically preserved peats, can provide evidence of… read more here.
Keywords: coal seams; thick coal; cycle; yimin formation ... See more keywords
Evidence for multiple sources for inorganic components in the Tucheng coal deposit, western Guizhou, China and the lack of critical-elements
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2020.103468
Abstract: Abstract Terrigenous materials from sediment-source regions are important controls on the types and concentrations of inorganic components in coal. The Kangdian Upland (dominated by the Emeishan basalts) is the dominant terrigenous supplier for most of… read more here.
Keywords: coal deposit; coal seams; inorganic components; tucheng coal ... See more keywords
Borehole measurements of adsorbed gas content in coals using stimulated diffusion nuclear magnetic resonance
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2021.103845
Abstract: Abstract We present an NMR measurement technique which has the unique ability to determine the in-situ adsorbed gas concentration within coal seams. The measurement of adsorbed gas content is of critical importance for operational safety… read more here.
Keywords: gas; coal seams; diffusion; measurement ... See more keywords
Influence of surface chemistry on interfacial properties of low to high rank coal seams
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DOI: 10.1016/j.fuel.2017.01.027
Abstract: Abstract Wettability of CO 2 /water/coal systems is a fundamental petro-physical parameter, which governs the fluid flow and distribution in coal seams and thus directly affects CO 2 -storage and methane recovery from unmineable coal… read more here.
Keywords: high rank; coal seams; chemistry; rank coal ... See more keywords
Statistical analysis to establish an ignition scenario based on extrinsic and intrinsic variables of coal seams that affect spontaneous combustion
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Mining Science and Technology"
DOI: 10.1016/j.ijmst.2018.05.008
Abstract: Abstract Spontaneous combustion of coal seams in open pit mines is a problem that occurs in coal mines around the world. Theories have been developed that express several factors which generate self-heating in the coal… read more here.
Keywords: coal seams; spontaneous combustion; extrinsic intrinsic; coal ... See more keywords
Spontaneous combustion liability between coal seams: A thermogravimetric study
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DOI: 10.1016/j.ijmst.2020.03.006
Abstract: Abstract The spontaneous combustion liability of coal can be determined by using different experimental techniques. These techniques are well-known in their application, but no certain test method has become a standard to prove the reliability… read more here.
Keywords: coal; combustion liability; spontaneous combustion; coal seams ... See more keywords
Succession Patterns and Physical Niche Partitioning in Microbial Communities from Subsurface Coal Seams
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DOI: 10.1016/j.isci.2019.01.011
Abstract: Summary The subsurface represents a largely unexplored frontier in microbiology. Here, coal seams present something of an oasis for microbial life, providing moisture, warmth, and abundant fossilized organic material. Microbes in coal seams are thought… read more here.
Keywords: succession; coal seams; coal; microbial communities ... See more keywords