Results 1 to 10 of about 291,405 (288)
Effects of Bionic Curves on Penetration Force under Difference Soils
Applied Sciences, 2020 Soil penetration is the most important process during soil tilling. To optimize the soil penetration process, six specimens were designed and fabricated based on the badger teeth outlines.
Yunhai Ma +4 more
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Force-Penetration Curves with a Button Bit in the Percussive Drilling
Journal of MMIJ, 2010 A force-penetration relationship is considered to be closely related to the deformation and fracture mechanism at the bit-rock interface. In this study, a testing machine in which a piston, a rod or a bit can be easily changed was developed for laboratory impact-penetration test simulating the in-situ percussive drilling.
Katsunori FUKUI +5 more
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Mechanical and Acoustic Emission Responses of Rock Fragmentation under Disc Cutter Penetration
Advances in Civil Engineering, 2021 To better understand the rock fragmentation mechanism and optimize cutter design and selection for rock excavation by TBM, a set of three-dimensional indentation tests was conducted with different rock and cutter types.
Qi Liu, Yucong Pan, Penghai Deng
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Applied Sciences, 2023 Button cutters are commonly used in hard rock drilling because the inserted carbide buttons provide exceptional wear resistance, impact resistance, and high strength in challenging geological formations.
Yanan Ma +4 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
doaj +1 more source
Model Test of Jacked Pile Penetration Process Considering Influence of Pile Diameter
Frontiers in Physics, 2021 In order to investigate the influence of different diameters on pile end resistance, pile side resistance, pile axial force and pile force transmission law of jacked pile penetration, two pairs of embedded sensitized microfiber grating sensors were ...
Yonghong Wang +7 more
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Experimental Investigation of Impact Response of RC Slabs with a Sandy Soil Cushion Layer
Advances in Civil Engineering, 2021 The impact response of reinforced-concrete (RC) slabs covered with a sandy soil cushion layer was investigated using an outdoor rockfall impact test platform.
Jianli Wu +4 more
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A calculation method of soft soil pressure bearing mathematical model under repeated load
Xibei Gongye Daxue Xuebao, 2023 The soft soil pressure bearing mathematical model under repeated normal load is established and its program is implemented. The relationship of soft soil between pressure and settlement under repeated load is solved. Taking the settlement volume, contact
DU Jiangshan, HUANG Tieqiu, WANG Kaihao
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Force calculation model of TBM disc cutter based on rock breaking mode
Meitan xuebao, 2023 The rock breaking force of the disc cutter is the core parameter for studying the efficiency and safety of TBM excavation in hard rock tunnels, the key to improve the accuracy of the calculation model is how to match the calculation model with the rock ...
Jiulei CAO +5 more
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Force-penetration curves of a button bit generated during impact penetration into rock
International Journal of Impact Engineering, 2015 Abstract To improve the performance and efficiency of percussion rock drills, it is essential to understand the impact penetration behavior of a bit drilling into rock. However, little knowledge to date has been published about the penetration behavior of the button bit, which is commonly used for hard rock.
K. Hashiba +4 more
openaire +3 more sources