Results 11 to 20 of about 435,468 (196)

Study on unsteady diffusion characteristics of primary coal and tectonic coal under the influence of pressure and particle size [PDF]

open access: yesMeikuang Anquan
In order to further study the characteristics of gas desorption and diffusion in coal, the gas desorption and diffusion experiments of primary coal and tectonic coal with different gas pressures (0.8, 1.3, 2.4, 3.3 MPa) and different particle sizes (0 ...
Shouqing LU   +5 more
doaj   +2 more sources

Study on mechanical properties and fractal evolution law of containing tectonic coal combination [PDF]

open access: yesMeikuang Anquan
To study the mechanical properties of tectonic coal combination specimens, based on the occurrence characteristics of coal seam in a high gas mine, this study carried out the mechanical properties test experiment of loading and fracture process of ...
Qiudong SHAO   +6 more
doaj   +2 more sources

Effect of supercritical CO2 on pore structure and desorption characteristics of tectonic coal [PDF]

open access: yesMeikuang Anquan
In order to analyze the influence of supercritical CO2 on pore structure and desorption characteristics of tectonic coal, a high-temperature and high-pressure geological environment simulation system was used to treat primary coal and tectonic coal with ...
Fanfan NIU   +3 more
doaj   +2 more sources

Characteristics of Tectonic Coal in 3# Coal Seam of Eastern Qinnan Block and Its Influence on Permeability

open access: yesMeikuang Anquan, 2020
Taking 3# coal seam of eastern Qinnan block as the research object, based on the description results of CBM well drilling coring, the vertical characteristics and horizontal distribution of tectonic coal were studied, the influence of tectonic coal on ...
LIU Shiqi, SANG Shuxun, YANG Henglin, SANG Guangjie, QIAO Maopo
doaj   +2 more sources

Deformation energy of tectonic coal and its role in coal and gas outbursts [PDF]

open access: yesMeitan xuebao
Coal and gas outburst is an underground dynamic disaster driven by coal deformation energy and gas expansion energy. Although the comprehensive effect hypothesis of outbursts has been widely recognized, the role of coal deformation energy in outbursts ...
Yuanping CHENG, Chenghao WANG
doaj   +2 more sources

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+7 more sources

Tectonic control on enrichment and metallogenesis of strategic metal elements in coal measures

open access: yes, 2023
The accumulation and distribution of strategic metal minerals in coal measures is the comprehensive result of multi-factors, multi-stages and multi-levels, amongst which the tectonic control is an important factor.
Anmin, WANG   +8 more
core   +1 more source

Experimental Investigation of the Adsorption Characteristics of Mixed Coal and Variations of Specific Surface Areas before and after CH4 Adsorption

open access: yesApplied Sciences, 2019
Tectonic coal is a kind of soft coal that is generated during tectonic movement. Gas outbursts usually occur in seams containing both virgin coal and tectonic coal.
Pengxiang Zhao   +7 more
doaj   +1 more source

Experimental study on confined compression deformation and breakage characteristics for different types of coal particles

open access: yesMeitan kexue jishu, 2023
Dynamic disasters such as coal and gas outburst seriously restrict the safety of mine production. Different types of coal particles reflect the coal structure, mechanical characteristics and energy storage behavior under load, which is of great ...
Wei LI   +5 more
doaj   +1 more source

Geophysical response characteristics and genetic analysis of tectonic coal:take Zhaozhuang coal mine in Jincheng mining area as an example

open access: yes矿业科学学报, 2018
The distribution of tectonic coal is of great importance to the exploration and development of coal-bed methane and the safety production of coal mine.The Zhaozhuang coal mine in Jincheng mining area is took as example.Firstly, the vertical distribution ...
Zou Guangui, Li Laichun
doaj   +1 more source

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