id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-25029	Jiang, Zhouwei; Zhou, Ying; Zhou, Peng; Xu, Tianyuan; Wang, Youmin	Design and Application of a Composite Grouting Equipment in Coal Mines	2024	4	.pdf	application/pdf	2693	114	49	At present, among the many broken surrounding rock strengthening control methods in mines, drilling grouting is a widely used rock stratum modification technical measure, but with the continuous deepening of coal mining, the underground geological conditions are becoming more and more complex, and the stability of its roof and floor is seriously threatened. Introduction to Equipment Principle At present, the main method of underground grouting is guided by the study of the injectability of permeation grouting, which was first proposed by Burwell Jr E B in 1958.	cache/ajst-25029.pdf	txt/ajst-25029.txt