id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-30376	Wang, Awei; Wang, Jiawei	Gas Drainage Borehole Technology and Intelligent Management Systems in Coal Mines: A Review	2025	4	.pdf	application/pdf	3410	143	35	For example, Si Fei[5]proposed a construction technology for directional long - borehole gas drainage in working faces to solve the problem of gas drainage blank zones in bedding borehole construction during coal - seam gas drainage in working faces; Du Jun[6], Sun Rongjun[7] et al. proposed a coal - and - gas co - mining system combining pre - drainage boreholes and high - level boreholes to address the problems of high construction cost and low operation efficiency in the special roadway and buried - pipe methods for goaf gas utilization; Pi Xiyu[8]et al. developed a lightweight, compact, and low - cost guiding and dust - capturing integrated device to suppress the dust diffusion speed during dry drilling in coal - roadway gas drainage borehole construction, reduce the dust concentration at the operation point, and ensure the health of operators and mine safety; Wang Qing[9], Zhang Zairong[10], Hao Dian[11]et al. proposed a directional drilling technology for underground pressure - relieved gas drainage in coal mines, developed a borehole - mouth anti - spray device, and constructed a refined management model for borehole construction and gas drainage with the requirements of “drill to the target, pipe to the end, seal the borehole tightly, drain the water smoothly, ensure sufficient negative pressure, conduct frequent inspections, keep the site clean, and have complete data, and prevent over - limit spray holes”; Liu Xuetong[12], Lou Yahui[13]et al. used theoretical analysis and numerical simulation methods to study the deflection control technology, deflection law, and engineering application of gas drainage boreholes to solve the problem that the borehole trajectory seriously deviates from the design trajectory during gas drainage borehole construction, which easily leads to gas drainage blind zones and safety hazards; Lin Haifei[14]established a fluid - solid coupling drainage model for gas - containing coal, analyzed the influence law of the interaction between geological factors and engineering factors on pre - drainage of coal - seam gas by boreholes using the COMSOL Multiphysics simulation software, proposed a borehole layout parameter determination index of the ratio of the maximum gas pressure between boreholes to the standard - reaching pressure (Pmax/Pb), innovated a precise borehole layout method for pre - drainage of coal - seam gas by bedding boreholes, obtained the optimal borehole layout parameters suitable for different coal - seam gas occurrence characteristics, and conducted on - site tests; Zhao Hongxing [15] proposed a gas drainage method combining high - and low - level boreholes and large - diameter long - boreholes along the roof strike to address the problem of large gas emission from the upper adjacent coal seams during the initial mining and normal mining periods; Shen Zhongsheng[16] et al. developed a stability maintenance device for gas drainage boreholes to maintain the stability of gas drainage boreholes with different diameters. Currently, the most widely used technology is gas drainage borehole technology.	cache/ajst-30376.pdf	txt/ajst-30376.txt