Results 11 to 20 of about 252 (179)
The rock breaking capability analyses of sonic drilling
Journal of Low Frequency Noise, Vibration and Active Control, 2021 Sonic drilling technology uses the longitudinal vibration of a drill string to realize fast and effective drilling. By setting the top and bottom boundary conditions of the drill string during drilling, a dynamic model of flexible sonic string percussive
Yonghang Qian +4 more
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Intelligent optimization for a full-sized PDC bit with composite percussive rock breaking drilling
Journal of Intelligent Construction, 2023 Intelligent drilling has obtained a lot of attention in mining engineering, oil and gas production, and tunnelling engineering. The optimization of drilling parameters is one of the most important technologies of intelligent drilling while determining ...
Liping Li +7 more
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Impact Dynamics of a Percussive System Based on Rotary-Percussive Ultrasonic Drill
Shock and Vibration, 2017 This paper presents an impact dynamic analysis of a percussive system based on rotary-percussive ultrasonic drill (RPUD). The RPUD employs vibrations on two sides of one single piezoelectric stack to achieve rotary-percussive motion, which improves ...
Yinchao Wang +5 more
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Shock and Vibration, 2017 Based on an optimized lunar regolith coring bit (LRCB) configuration, the load characteristics of rotary-percussive drilling of lunar rock simulant in a laboratory environment are analyzed to determine the effects of the drilling parameters (the ...
Peng Li +3 more
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Percussive-Rotary Drilling Machine
Наука и техника, 2003 The paper contains description of percussive-rotary drilling machine which is designed for hole sinking in the process of engineering and geological research.
G. T. Shiroky, M. A. Litvin
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High Efficiency Drilling Methods for Through Beds Hole in Underground Coal Mine
Meikuang Anquan, 2020 Considering the drilling efficiency problem encountered by crossing holes in underground coal mine, the paper divided roof and floor rock stratum into three grades in order to facilitate the study of technology in underground coal mine: high hard rock (4≤
DOU Xuqian
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Prediction Model of Drilling Performance for Percussive Rock Drilling Tool
Advances in Civil Engineering, 2020 This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate
Dae-Ji Kim +6 more
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Energy Reports, 2021 In the present study, a 3D FEM of compound percussive system considering a loading–unloading cycle was employed to simulate the dynamic single-cutter-rock interaction.
Yumei Li +4 more
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Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement
Advances in Materials Science and Engineering, 2018 This paper aims to determine the optimal design parameters for percussive drilling systems considering the bit-rock interaction. First, the motion dynamics of a bit impacted by a dropped piston are modeled by impact stress propagation and a rock-breaking
Changheon Song +3 more
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Rotary ultrasonic machining of rocks: An experimental investigation
Advances in Mechanical Engineering, 2018 Rock drilling is widely used to explore and mine energy resources. It has also been used to extract samples to study the earth’s geological composition and topography and to explore different planets.
PKSC Fernando, Meng Zhang, Zhijian Pei
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