id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-21758	Lu, Zhanjin	Research and Application of High Efficiency Pressure Relief Technology for Ultra-high Pressure Hydraulic Slotted Coal Seam	2024	6	.pdf	application/pdf	4281	180	58	The author conducted an efficient pressure relief test on coal seams with ultra-high pressure hydraulic cutting in Tangkou Coal Mine, Shandong Province, to study the pressure relief effect of hydraulic cutting on coal seams, and provide scientific reference for the prevention and control of coal seam rockburst in Tangkou Coal Mine and other similar mines. The firmness coefficient f value of coal seam 3 # in this working face is 1.35, which belongs to coal seams with medium hardness or above.	cache/ajst-21758.pdf	txt/ajst-21758.txt