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- Title
Relationship between mining thickness and peak position of advancing abutment pressure: a case study in Helin coal mine in China.
- Authors
Cheng, Zhiheng; Qin, Hongyan; Chen, Liang; Zhao, Xidong; Yin, Shuaifeng
- Abstract
Among the factors that determine the peak point of advancing abutment pressure, mining thickness is critical one. To study the effects of mining thickness on the peak position of advancing abutment pressure in fully mechanized mining faces, this paper takes the j7401 fully mechanized caving face of Helin coal mine as the research object and examines the relationship between mining thickness and the peak position of advancing abutment pressure based on theoretical analysis and field measurement. Theoretical analysis reveals that the relationship between mining thickness and the peak of advancing abutment pressure exhibited a linear correlation in which the distance between the peak and the coal wall of the working face increases with an increase in mining thickness. Site data analyzed using the Lagrange polynomial indicates that the peak position of abutment pressure remains unchanged when the thickness is the same. The research findings can serve as reference to predict the peak position of advancing abutment pressure under different mining thicknesses, which offers important implications when selecting support equipment and methods.
- Publication
Arabian Journal of Geosciences, 2021, Vol 14, Issue 12, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-021-07492-7