Results 171 to 180 of about 324,854 (212)

Coal Permeability Damage Caused by Production Pressure Difference

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2012
Abstract Due to the special physical and mechanical properties and gas production mechanism of coal reservoirs, the changes of their physical properties are different from those of conventional reservoirs during the coalbed methane development process, of which the dynamic change in permeability is the most significant.
S. Tao, Y.-B. Wang, D.-Z. Tang, H. Xu, Y.-M. Lv   +4 more
openaire   +1 more source

Fatigue damage evolution of coal under cyclic loading

Arabian Journal of Geosciences, 2018
The experimental study of fatigue damage to coal under cyclic loading is important for guiding the design of pillars in underground coal mines where the pillars may be affected by repeated mining activity. In this paper, the strength, deformation, energy dissipation, and fatigue of samples of coal from a mine in China are studied using cyclic loading ...
Yong-Jie Yang, Lu-Yi Xing, Hui-Qiang Duan, Lei Deng, Yan-Chao Xue   +4 more
openaire   +1 more source

Coal Conversion Will Increase Acid Rain Damage

BioScience, 1980
The acid rain dilemma is reviewed with US EPA plans for studying sensitive environmental areas. Global economic woes from the malady are predicted with the problem expected to worsen before improvement.
openaire   +1 more source

Damage Analysis for Coal Lance in Blast Furnace

Advanced Materials Research, 2011
Pulverized Coal Injection (PCI) is a key technology in modern ironmaking by blast furnace and the life of injection lance has a great influence on PCI operation and on normal running of blast furnace. It is found that the main reasons for the failure of the lances are their outer surface oxidation and the inner surface erosion through monitoring some ...
Wei Xiong, Jia Chao Chen, He Ming Shang
openaire   +1 more source

Damage cost of the Dan River coal ash spill

Environmental Pollution, 2015
The recent coal ash spill on the Dan River in North Carolina, USA has caused several negative effects on the environment and the public. In this analysis, I report a monetized value for these effects after the first 6 months following the spill. The combined cost of ecological damage, recreational impacts, effects on human health and consumptive use ...
openaire   +2 more sources

Oxidative DNA damage in peripheral blood lymphocytes of coal workers

International Archives of Occupational and Environmental Health, 1995
Reactive oxygen species are important mediators of both mineral dust-induced (malignant) lung disease and in vitro DNA damage. Therefore, we studied in vivo oxidative DNA damage in coal workers who had been chronically exposed to silica-containing dust.
R P, Schins, P A, Schilderman, P J, Borm
openaire   +2 more sources

Cytogenetic damage in workers from a coal-fired power plant

Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 2007
The aim of this study was to investigate the genotoxic risk to workers occupationally exposed to coal combustion products in Afsin-Elbistan A power plant, located in south-eastern Turkey. We analysed chromosomal aberrations (CAs), polyploidy, sister-chromatid exchanges (SCEs), and micronuclei (MN) in 48 male workers without a history of smoking ...
Yuzbasioglu, DENİZ, ÜNAL, FATMA, Celik, Mustafa, Donbak, Lale, Aksoy, Huseyin, Yilmaz, Serkan   +5 more
openaire   +3 more sources

Impact of Gas Adsorption Induced Coal Matrix Damage on the Evolution of Coal Permeability

Rock Mechanics and Rock Engineering, 2013
It has been widely reported that coal permeability can change from reduction to enhancement due to gas adsorption even under the constant effective stress condition, which is apparently inconsistent with the classic theoretical solutions. This study addresses this inconsistency through explicit simulations of the dynamic interactions between coal ...
W. C. Zhu, C. H. Wei, J. Liu, T. Xu, D. Elsworth   +4 more
openaire   +1 more source

Experimental Study on Coal Damage Subjected to Microwave Heating

Rock Mechanics and Rock Engineering, 2020
Coalbed methane (CBM) reservoirs usually require stimulation to enhance the permeability, thereby promoting CBM production. Realized by the conversion of the electromagnetic energy into heat, microwave heating may be an effective CBM stimulation method.
He Li, Li Tian, Bingxiang Huang, Jiexin Lu, Shiliang Shi, Yi Lu, Fei Huang, Yong Liu, Xiangnan Zhu   +8 more
openaire   +1 more source

Influence of coal seam floor damage on floor damage depth

Environmental Earth Sciences, 2022
Xiaoge Yu, Yifei Liu, Haibin Fan
openaire   +1 more source