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Numerical simulation of percussive drilling [PDF]
International Journal for Numerical and Analytical Methods in Geomechanics, 2015 SummaryThis paper presents a novel dynamical model to analyze the long‐term response of a percussive drilling system. This departs from existing approaches that usually consider a single activation and bit/rock interaction cycle for the analysis of the process performance.
Depouhon, Alexandre +2 more
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Shiyou jixie, 2020 High-speed rotary percussive drilling technology is a new type of high-efficiency rock breaking technology based on PDM drilling and self-oscillating rotary percussive drilling.
Yu Yang, Liu Shiyin
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Energies, 2020 The monitoring of drilling processes is a well-known topic in the mining industry. It is widely used for rock mass characterization, bit wear monitoring and drilling process assessment.
Jacek Wodecki +8 more
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The electric percussion drill in theory and practice [PDF]
Transactions of the American Institute of Electrical Engineers, 1892 n ...
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New drilling methods for the conductor casing operations [PDF]
Acta Montanistica Slovaca, 2006 The necessity to apply casing to wells drilled in loose rock strata have recently created conditions for the modernization of old solutions and the development of new drilling technologies. The newest World's design and technological solutions for rotary,
Rafał Wiśniowski
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Full and Half-Wavelength Ultrasonic Percussive Drills [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2018 Ultrasonic percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers impulsive blows to a drilling-bit.
Li, Xuan +2 more
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Study on Construction Technology of Rock-socketed Pile Group for Offshore Wind Turbine Generators
Renmin Zhujiang, 2020 This paper simulates and analyzes the driveability of steel pipe pile under complex geological conditions by the GRLWEAP software,and studies the construction technology of integrated rock-socketed pile group based on the statistical analysis of the ...
CHENG Zishuo
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Use of the Rotary-Percussion Drilling Technology in the OKR Mining Conditions and by Drilling the Wells for Purposes of Heating Pump Installation [PDF]
Acta Montanistica Slovaca, 2004 Sedimentary rocks in the Ostrava-Karviná Coalfield (OKR) especially the Saddle Seams of the Karviná Formation are marked with considerable abrasive property following from the high content of siliceous component in these rocks.
Koníèek Jiøí, Mazáè Josef
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AerospaceThe objective of the kinematic model of rock chips is to examine the impact of the driving parameters of drilling tools on the effective chip removal speed, with a view to analyze the chip removal performance of rotary percussion ultrasonic drilling. The
Yinchao Wang +6 more
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Simulation Study on Compound Percussion Frequency Matching Characteristics
Shiyou jixie, 2019 There are many researches on the traditional axial impact rock breaking and torsional impact rock breaking mechanism. But researches on the rock breaking mechanism of compound percussion drilling are few and are still in infancy state.
Li Yumei +4 more
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