Study on the Load-Bearing and Mechanical Properties of Coal Specimens Under Uniaxial Compression with Polyurea Spraying

Polyurea spraying is a new temporary support technology that can significantly enhance the mechanical properties of coal. However, the mechanism of interactions between the polymer coating and coal is unclear. In this study, the No. 4 non-stick coal from Mengcun Coal Mine and polyurea material were...

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Bibliographic Details

Published in:	Applied Sciences
Main Authors:	Shuwen Cao, Jinhong Yang, Dingyi Hao
Format:	Article
Language:	English
Published:	MDPI AG 2025-03-01
Subjects:	polyurea materials spraying support residual strength loading and unloading process friction coefficient
Online Access:	https://www.mdpi.com/2076-3417/15/7/3486