Results 41 to 50 of about 1,774,538 (199)

A global platform for accelerating coal efficiency (PACE) [PDF]

open access: yes, 2014
The World Coal Association released this concept paper in December 2014 on establishing a Platform for Accelerating Coal Efficiency (PACE). The vision of PACE would be that for countries choosing to use coal, the most efficient power plant ...
World Coal Association
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Coal utilization study

open access: yes, 1988
"October, 1988."EXECUTIVE SUMMARY -- BASIS FOR THE STUDY -- THE KANSAS COAL MINING INDUSTRY -- UTILITY COAL MARKET IN KANSAS -- INDUSTRIAL COAL MARKET -- COMMERCIAL, RESIDENTIAL, EXPORT POTENTIAL -- COMPETITIVE ANALYSIS -- THE OUTLOOK FOR KANSAS COAL ...
J.E. Sinor Consultants, Inc.
core   +1 more source

Plastic deformation-based constitutive relation of coal damage and permeability model

open access: yes, 2021
Coal and gas outburst induced by mining disturbance is one of the main gas dynamic disasters in coal mine production. In order to systematically explore the evolution characteristics of coal damage and the law of gas seepage under mining disturbance, the
Zheng, GAO   +5 more
core   +1 more source

Micro-damage model of gas-bearing coal under load and instability identification criteria

open access: yesMeitan xuebao
The distribution of pores and skeletons within coal reservoirs significantly affects the migration of gases and the occurrence of gas dynamic disasters. To further explore the micro-damage mechanisms in gas-containing coal, a detailed study of the micro ...
Baisheng NIE   +10 more
doaj   +1 more source

Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution

open access: yesAdvances in Materials Science and Engineering, 2017
Coal-gas outburst, rock burst, and other mine dynamic disasters are closely related to the instability and failure of coal-rock. Coal-rock is the assemblies of mineral particles of varying sizes and shapes bonded together by cementing materials.
Zhijie Wen   +4 more
doaj   +1 more source

Experimental Investigation on Damage Characteristics and Early Warning of Frozen Coal under Uniaxial Compression

open access: yesAdvances in Materials Science and Engineering, 2023
This article conducted acoustic emission tests of natural coal, natural frozen coal, and saturated frozen coal to explore the damage characteristics of frozen coal and in view of the frozen coal damage early warning problems and explored the strength ...
Xiang Sun, Bin Liu, Qi Dong, Feng Shi
doaj   +1 more source

Research on the Characteristics of Coal Bump and Monitoring and Early Warning in Hujiahe Coal Mine

open access: yesGeofluids, 2022
Under the high intensity mining disturbance, coal bump is easily triggered by the sudden release of large amount of elastic energy contained in the coal body, which seriously affects coal mine safety production.
Fei Yu, Tong Zhang, Zhen Wei
doaj   +1 more source

Coal and the Environment

open access: yes, 1973
12 pages; available for download at the link below.Outlined in this booklet are the accomplishments and goals of the dedicated researchers who are working daily to forge a cooperative link between the production and utilization of coal and the ...
National Coal Association
core   +1 more source

Numerical Simulation of Microwave-Induced Cracking of Coal Containing Pyrite Powder Based on a Multi-Field Coupling Model

open access: yesApplied Sciences
Microwave irradiation has become a potential technical method for coalbed degassing, which can effectively improve its permeability. A coupled electromagnetic—thermomechanical damage (ETMD) model was established to study the damage characteristics of ...
Yidu Hong, Shengyi Long, Xiaowan Sun
doaj   +1 more source

Quarterly coal report /

open access: yes, 1982
"DOE/EIA-0121."Mode of access: Internet.Includes information previously presented in: Weekly coal production, ISSN 0733-0545 and in: Coal distribution, ISSN 0737 ...
United States. Office of Coal, Nuclear, Electric, and Alternate Fuels.
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