Results 11 to 20 of about 1,056,070 (342)
Research on the Matching of Impact Performance and Collision Coefficient of Hydraulic Rock Drill
Shock and Vibration, 2021 The stress wave produced by the piston impact, on the drill rod, is an important factor affecting impact performance. It is particularly important to control the stress waveform generated by the piston impact on the drill rod to meet the requirements of ...
Yelin Li
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Shock and Vibration, 2018 In the production and manufacturing process of hydraulic rock drill, there are small impact energy and low impact frequency, and a fault diagnosis method based on the internal mechanism testing and testing of the hydraulic rock drill is proposed.
Yelin Li, Youxin Luo, Xiao Wu
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Friction, 2020 Rock drilling is an essential operation in mining industries. Temperature at the bit-rock interface plays a major role in the wear rate of the drill bit.
Vijay Kumar Shankar +3 more
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DOMAIN ADAPTATION BASED FAULT DIAGNOSIS UNDER VARIABLE OPERATING CONDITIONS OF A ROCK DRILL
International Journal of Prognostics and Health Management, 2023 Data-driven fault diagnosis is an essential technology for the safety and maintenance of rock drills. However, since the signals acquired from a rock drill have different distributions, which arise due to their variable operating conditions, the ...
Yong Chae Kim +4 more
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Hydraulic Rock Drill Fault Classification Using X−Vectors
Mathematics, 2023 Hydraulic rock drills are widely used in drilling, mining, construction, and engineering applications. They typically operate in harsh environments with high humidity, large temperature differences, and vibration.
Huixuan Ling +4 more
semanticscholar +1 more source
A Novel Mesoscopic Drill Bit Model for Deep Drilling Applications
Modelling, 2023 This paper deals with the development of a novel mesoscopic model of polycrystalline diamond compact (PDC) drill bits that can be implemented in complex drill string models for simulations to analyse the influence of rock inhomogeneities or the impact of
Mohamed Ichaoui +2 more
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Rock Mechanics and Rock Engineering, 2022 Significant uncertainties remain regarding the field assessment of the peak shear strength of rock joints. These uncertainties mainly originate from the lack of a verified methodology that would permit prediction of rock joints’ peak shear strength ...
F. Ríos-Bayona +3 more
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Remote control drill for small section hard rock roadway in coal mine
Meikuang Anquan, 2021 Aiming at the problems of low drilling efficiency, high labor intensity and low safety in the traditional blasting process of small section hard rock roadway in coal mine, a remote control drill for small section hard rock roadway tunneling was developed.
WANG Tianlong, SONG Haitao, DONG Hongbo
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Applied Sciences, 2023 The interaction between the drill bit and rock is a complex dynamic problem in the process of drilling and breaking rock. In this paper, the dynamic process of drilling and breaking rock is analyzed using ABAQUS software.
Xinxing Liu +3 more
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Effect of Bit Configuration in Impact Penetration Tests with Button Bits
Journal of MMIJ, 2016 Computer simulation of percussive rock drilling requires appropriate numerical models for the interactions among the drill body, rod, rod joint, bit, and rock.
Yingzong LIANG +4 more
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