Results 11 to 20 of about 10,276,216 (240)
Shiyou jixieIn drilling engineering， optimized cutter selection for specific formations is critical to enhance rock breaking efficiency. To this end， a Split Hopkinson Pressure Bar （SHPB） apparatus was used to conduct impact-induced rock breaking tests of triangular-
Li Yunzhu +6 more
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SC-CO2 and emulsion explosives equivalence of rock-breaking effect in granite and mudstone sites
Journal of CO2 UtilizationHow to quantitatively account for the effect of SC-CO2 (Supercritical Carbon) rock-breaking in different rock sites is the key concern in the engineering application of non-explosive rock-breaking technology and economic comparison and there is a lack of
Nan Jiang +3 more
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Energy Science & EngineeringStepped cyclic electro‐hydraulic shockwave drilling technology (S‐EHSD) utilizes cyclic alternating shockwave loads to break rocks more quickly. In recent years, S‐EHSD is considered a potential new technology that can effectively improve the drilling ...
Hongwei Yang +7 more
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Downtown Partnership Board/Annual Meetings/Top of the Rock Award
, 2023 This file contains a photograph of Jack Turner and Rick Beard at the Downtown Little Rock Partnership annual meeting.This project was supported in part by a Humanities Collections and Reference Resources Implementation Grant from the National Endowment ...
The Downtown Little Rock Partnership
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Sensitivity analysis of EUROSEM using Monte Carlo simulation II: : the effect of rills and rock fragments [PDF]
, 2000 A sensitivity analysis of the surface and catchment characteristics in the European soil erosion model (EUROSEM) was carried out with special emphasis on rills and rock fragment cover.
Poesen, J., Veihe, A., Quinton, John
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Influence of PDC Cutter Diameter on Cutting Force
Shiyou jixie, 2023 PDC bit design needs to be customized depending upon the formation lithology characteristics, and especially the diameter of PDC cutter is an important parameter in bit design optimization.A series of laboratory simulation tests were conducted to explore
Wei Jiusen +4 more
doaj
Principles of risk‑based rock engineering design
, 2020 In comparison with other types of construction, the development of rock engineering design codes has been slow. Codesmust, however, be developed with relevant discipline-specific characteristics in mind.
Palmstrøm, Arild +7 more
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Rock Breaking Efficiency Analysis of PDC Bit Based on Pointing Angle of Controllable Bent Sub
Shiyou jixie, 2021 In order to improve the rock breaking efficiency of the directional downhole closed-loop controllable bent sub, the ABAQUS software was used to conduct dynamic simulation analysis on the continuous sandstone breaking by the PDC bit under the pressurized ...
Zhang Guangwei +3 more
doaj
Investigation of a hydraulic impact: a technology in rock breaking [PDF]
, 2008 International audienceThe finite element method and dimensional analysis have been applied in the present paper to study a hydraulic impact, which is utilized in a non-explosive rock breaking technology in mining industry.
Wenyi Yan +5 more
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Numerical simulation study on rock-breaking process and mechanism of compound impact drilling
Energy Reports, 2021 Improving the rock-breaking efficiency of hard rock formation has always been of concern in drilling. Compound impact drilling technology is a new method to achieve efficient crushing of hard rock by exerting axial and torsional impacts on the drilling ...
Wei Wang +4 more
doaj +1 more source