Results 91 to 100 of about 4,764 (197)

The identification of unusual microscopic features in coal and their derived chars: influence on coal fluidized bed combustion [PDF]

, 2006
During the petrographic study of seven feed coals from different origins, it was found that these coals presented microfeatures such as: material size, shape, weathering, thermally affected particles and contamination.
Abelha, P., Boavida, D., Gulyurtlu, I., Valentim, B., Lemos de Sousa, M. J.   +4 more
core  

A Limited Survey to Determine the Occurrence of the Indiana Bat (Myotis sodalis) Within a Selected Segment of the Proposed Willow Creek Impoundment, Freeman United Coal Mining Company, Schuyler and McDonough Counties, Illinois

, 1986
Made available in DSpace on 2009-03-30T17:11:32Z (GMT). No. of bitstreams: 3 inhsfauv01986i00004_tei.xml: 35863 bytes, checksum: 97c44d6d98523afc39a53ed07ed5efed (MD5) inhsfauv01986i00004_opt.pdf: 240252 bytes, checksum: d01abf52def5061793e3fbd137fc3199 (
Gardner, James E., Hofmann, Joyce E.
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Characterization and Identification of Coal and Carbonaceous Shale Using Visible and Near-Infrared Reflectance Spectroscopy

, 2018
Because of the high organic carbon concentration in carbonaceous shale, a large proportion of carbonaceous shales are often misclassified into coals using visible and near-infrared (VIS-NIR) reflectance spectroscopy in the field of coal-gangue ...
Shirong Ge, Shibo Wang, En Yang
core   +1 more source

Numerical and test study on dynamic characteristics of the tail beam of top coal caving hydraulic supports

Jixie qiangdu
In order to determine the sensitive vibration characteristic parameters of coal and gangue in the process of top coal caving and improve the intelligent identification accuracy of coal and gangue, the dynamic characteristics of the tail beam of the ...
WU Mingke, YANG Shanguo, WANG Yao, MENG Bin, YANG Zheng, LIU Houguang   +5 more
doaj  

High-precision coal gangue recognition method in multi-stage coal transportation with complex backgrounds underground

Meitan kexue jishu
Intelligent coal gangue sorting is one of the key technologies for advancing intelligent and green coal mining. Accurate identification of coal gangue is a prerequisite for intelligent sorting, and overcoming the challenges posed by complex underground ...
Hengxuan LUAN, Le AN, Ying TIAN, Jieying GU, Qiang ZHANG, Hongwei CHEN, Xiang FU, Chengjun HU, Zhifang CUI, Rui CHEN   +9 more
doaj   +1 more source

Overview of Solid Backfilling Technology Based on Coal-Waste Underground Separation in China

, 2019
China is the world’s largest coal producer country. However, large-scale coal mining has led to severe environmental pollution issues such as surface subsidence and gangue piling up.
Qiang Zhang, Jixiong Zhang, Zhongya Wu, Yang Chen   +3 more
core   +1 more source

Multi-source remote sensing identification of underground coal fires based on the fusion of surface temperature and deformation. [PDF]

Underground coal fires have strong concealment and great harm, not only damaging vegetation and ecological environment, causing serious air pollution, but also easily inducing geological disasters, threatening the safety of life and property of ...
Hao YU, Shiyong YAN, Ziyan ZHANG, Zhenlu SHAO, Haolei ZHANG, Hongfeng ZHAO   +5 more
core   +1 more source

Factors affecting the variation in floral diversity on two reclaimed coal mine sites [PDF]

, 2011
An investigation was carried out into the plant community status of two ex-coal mine sites near Wakefield - Upton and Fitzwilliam. The investigation set out to understand the ways in which the underlying geology, the historical and industrial development
Ridealgh, Michael
core  

Creep Characteristics and Fractional-Order Constitutive Modeling of Gangue–Rock Composites: Experimental Validation and Parameter Identification

With the increasing depth of coal resource extraction, the creep characteristics of gangue backfill in deep backfill mining are crucial for the long-term deformation of rock strata. Existing research predominantly focuses on the instantaneous deformation
Yimei Wei, Bo Wu, Peng Huang, Guohui Ren, Shuxuan Ma, Erkan Topal, Qihe Lan   +6 more
core   +1 more source

Research on Coal Gangue Image Recognition Method Based on EMAM-YOLO. [PDF]

ACS Omega
Jia Y, Li B, Du Y, Zheng W, Li Y, Wu S.
europepmc   +1 more source