Impact characteristics of rock breaking using a conical pick assisted with abrasive slurry jet

Liu, Songyong; Cui, Song; Li, Hongsheng; Zhou, Fangyue; Xu, Baolong; Yang, Hu

doi:10.1016/j.engfracmech.2022.108647

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…Li et al (2021) used a hydraulic fracturing system and simulated the cutting system to cut rock samples after fracturing, and found that the cutting torque and cutting resistance were significantly reduced after fracturing. Liu et al (2022a) used ASJ method to study the effect of mud properties and working parameters on rock cutting performance, and analyzed the rock cutting resistance and specific energy (SE) of ASJ-assisted conical pick. Xi et al (2022) conducted orthogonal experiments of the split Hopkinson pressure bar (SHPB) device to analyze 13 parameters of the Riedel Hiermaier Thoma (RHT) material model, considering the actual size of drilling teeth and the load transmitted to the formation.…”

Section: Introductionmentioning

confidence: 99%

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

Liu¹,

Zhang²,

Sun³

et al. 2023

Journal of Theoretical and Applied Mechanics

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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.

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Section: Introductionmentioning

confidence: 99%