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1 2023

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Analysis of dynamic characteristics of an experimental bench of high-pressure water fracturing assisted cutting

Liu Zhiming, Zhang Qiang, Sun Yuliang, Liu Junming

Journal of Theoretical and Applied Mechanics

2023

Vol. 61 nr 2

317--330

Aiming at the problem that the cutting efficiency of a drum shearer is low when mining hard coal seams, an experimental bench of high-pressure water fracturing assisted cutting is designed. Compared with normal ones, the maximum equivalent stress of the improved experimental bench is reduced by 55.38%, and the maximum total deformation is reduced by 27.23%. According to the results of dynamic response analysis, it is concluded that the experimental bench of high-pressure water fracturing assisted cutting is stable and reliable under extreme working conditions, and meets design requirements for strength and stiffness.