Results 11 to 20 of about 1,774,538 (199)

Biodesulphurisation of coal [PDF]

open access: yes, 2001
The emission of sulphur oxides during the combustion of coal is one of the causes of an environmental problem known as acid rain. Biodesulphurisation technology applied as a method to remove sulphur before coal combustion was investigated in
Prayuenyong, P.
core   +7 more sources

Mechanical properties and damage constitutive model of coal under the coupled hydro-mechanical effect

open access: yesRock and Soil Mechanics, 2021
In order to explore the impact of moisture on the mechanical properties of coal, the triaxial compression tests of raw coal with different moisture contents are carried out by using the triaxial servo-controlled seepage equipment for thermal-hydro ...
LI Bo-bo   +5 more
doaj   +1 more source

Experimental and Numerical Analysis on the Damage and Failure Characteristics of Bituminous Coal under Multilevel Cyclic Loads

open access: yesAdvances in Materials Science and Engineering, 2022
The coal mining process is often accompanied by periodic disturbance of the surrounding rock mass around the coal mining face. Therefore, it is of great theoretical and engineering value to investigate the damage pattern of bituminous coal under cyclic ...
Shuang Gong   +7 more
doaj   +1 more source

Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

open access: yesGeofluids, 2021
The purpose of this study is to study the damage and fracturing effects of high-voltage discharge on coal-rock mass under the action of hydrostatic pressure. Based on the traditional damage evolution model and the change of the effective bearing area and
Xiankai Bao   +5 more
doaj   +1 more source

CONDITIONS OF THE CHROMOSOMAL DAMAGE IN COAL MINERS

open access: yesHygiene and sanitation, 2019
Working in coal mines, despite all achievements of modern science and technology, still remains among the most dangerous occupations to the health. The review of researches about the chromosomal damage in coal miners was performed. We searched information in the following databases - PubMed, http://www.sciencedirect.com and in the electronic library ...
Yu. E. Kulemin   +4 more
openaire   +1 more source

Change pattern of acoustic emission signal and generation mechanism during coal heating and combustion process

open access: yesMeitan kexue jishu, 2023
The early warning of coal spontaneous combustion is difficult to solve the perception of fire information. The acoustic emission (AE) signal generated by thermal damage and destruction on coal rock can perceive the temperature, and then issue a warning ...
Biao KONG   +7 more
doaj   +1 more source

Experimental study on overburden porosity and permeability of coal reservoir in Tucheng syncline of Western Guizhou

open access: yesMeikuang Anquan, 2023
In order to study the characteristics of porosity, permeability and stress sensitivity of middle rank coal reservoir in Tucheng syncline and their influence on coalbed methane exploitation, coal core samples of coal seams 1#, 3#, 5#, 15#, 17#, 291# and ...
TANG Daixue, LOU Yi, FENG Yunfu
doaj   +1 more source

Deformation and damage dynamic characteristics of coal–rock materials in deep coal mines [PDF]

open access: yesInternational Journal of Damage Mechanics, 2017
The deformation and damage characteristics of surrounding rock grow gradually with the increase of mining depth, and the mechanical behavior and damage mechanism of coal–rock materials vary greatly. In order to reveal the deformation and damage dynamic characteristics of coal–rock materials in deep mines, the macroscopic deformation characteristics of ...
Jiankun Xu   +5 more
openaire   +1 more source

Damage Evolution of Coal with Inclusions Under Triaxial Compression [PDF]

open access: yesRock Mechanics and Rock Engineering, 2021
AbstractAlong with the advance of the working face, coal experiences different loading stages. Laboratory tests and numerical simulations of fracture and damage evolution aim to better understand the structural stability of coal layers. Three-dimensional lab tests are performed and coal samples are reconstructed using X-ray computer tomography (CT ...
Zhao, Yufeng   +5 more
openaire   +2 more sources

Research on occupational health damage assessment model of coal-fired power generation during the life cycle

open access: yes矿业科学学报, 2021
The coal power industry, while promoting the national economic and social development of China, also causes environmental pollution, thus threatening the health of employees and nearby residents.In order to evaluate the impact of occupational health ...
Wang Wei   +3 more
doaj   +1 more source

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