Results 1 to 10 of about 905,833 (210)
IEEE Access, 2021 In the present research, two real-time rock strength determination models based on the drilling parameters were studied. Firstly, a discrete element software named Particle Flow Code in 2 Dimensions (PFC2D) was used to analyze the applicability of rock ...
Bosong Yu, Kai Zhang, Ganggang Niu
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Drilling Processes with Hydraulic Percussion Rock Drills
Journal of MMIJ, 2017 Rock drills were developed about two hundred years ago, and hydraulic percussion rock drills are about half-century old. Performance and efficiency of rock drills have been increased by a number of researchers and engineers.
Kimihiro HASHIBA +2 more
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Jin'gangshi yu moliao moju gongcheng, 2023 The hot-pressing sintering experiments were carried out under the conditions of sintering temperature of 950 ℃, holding time of 5 mins and different sintering pressures.
Zhiming WANG +5 more
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Lateral Dynamic Response of Helical Pile in Viscoelastic Foundation Considering Shear Deformation
Applied Sciences, 2023 Helical piles are a new type of pile that has good application prospects, and researchers have carried out an in-depth investigation into their vertical uplift and compressive bearing capacity.
Xiaoyan Yang +4 more
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Drilling Path Planning of Rock-Drilling Jumbo Using a Vehicle-Mounted 3D Scanner
Sustainability, 2023 Achieving intelligent rock excavation is an important development direction in underground engineering construction. Currently, some rock-drilling jumbos are able to perform autonomous operations under ideal contour surfaces.
Yongfeng Li +5 more
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Jin'gangshi yu moliao moju gongcheng, 2023 Self-lubricating impregnated diamond bit can provide a new technical solution to the lunar drilling problem, but the poor wettability between the solid lubricants and the bit matrix can lead to degradation of physical and mechanical properties of the bit
Chengkai GUAN +4 more
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矿业科学学报, 2023 The drilling identification technology of surrounding rock lithology can obtain the mechanical parameters of the surrounding rock of the roadway in real time, providing the basic guarantee for the surrounding rock support of the coal mine roadway.
Yue Zhongwen +5 more
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A Simplified Method for Analysis of Laterally Loaded Piles considering Cyclic Soil Degradation
Advances in Civil Engineering, 2021 This paper proposes a simplified method to analyze the bearing behavior of pile undergoing cyclic lateral load. Firstly, a modified strain model is proposed by utilizing the Duncan–Chang model to describe the stress-strain behavior of soils in the strain
Yuzhe Yang +3 more
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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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Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load
Energies, 2020 The research on the deformation mechanism of monopile foundation supporting offshore wind turbines is significant to optimize the design of a monopile foundation under wave and current load.
Libo Chen +6 more
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