Results 11 to 20 of about 143,227 (288)
Heat-fluid-solid coupling mechanism of supercritical carbon dioxide jet in rock-breaking
Petroleum Exploration and Development, 2021 Aiming at the synergistic rock-breaking mechanism of supercritical carbon dioxide (SC-CO2) jet pressure and temperature difference, a heat-fluid-solid calculation model of rock-breaking stress was established and verified to be effective, and the ...
Mukun LI +5 more
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International Journal of Mining Science and Technology, 2023 When the traditional drill and blast method is applied to rock crushing projects, it has strong vibration, loud noise and dust pollution, so it cannot be used in densely populated areas such as urban public works.
Xiaofei Wang +4 more
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Research on the modulation mechanism and rock breaking efficiency of a cuttings waterjet
Energy Science & Engineering, 2019 The feasibility of a cuttings waterjet directly modulated in the bottom hole is discussed from the aspects of cuttings suction and rock‐breaking efficiency.
Peng Wang +5 more
doaj +2 more sources
Energy Reports, 2023 Geothermal reservoir rocks have the characteristics of high stress, high hardness and high abrasiveness, which makes the drilling rate low and the drilling cost high, and hinders the application of geothermal energy. Improving drilling efficiency in hard
Jian Huang +6 more
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Substantiating rational parameters of a method for shrinkage ore stoping while developing thin- vein steeply inclined deposits [PDF]
, 2018 Objective of the paper is to substantiate rational ore-stoping technique while using small wells in the context of thin-vein steeply inclined deposit mining.
Denyshchenko, Oleksandr +3 more
core +1 more source
Applied Sciences, 2019 The low rock breaking efficiency of conventional polycrystalline diamond compact (PDC) bits in hard abrasive formations prompts the development of PDC cutting elements from the planar structure to the non-planar structure.
Jianxun Liu +4 more
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Analyzing mechanics of rock breaking under conditions of hydromechanical drilling [PDF]
Mining of Mineral Deposits, 2021 Purpose is to substantiate design factors and technological parameters of next-generation facilities of hydromechanical drilling basing upon the determined features of interaction between breaking pellets and rock mass. Methods. The studies of directionality features and bottomhole processes for rock mass breaking have been carried out using the
openaire +2 more sources
On the puzzling feature of the silence of precursory electromagnetic emissions [PDF]
, 2013 It has been suggested that fracture-induced MHz-kHz electromagnetic (EM) emissions, which emerge from a few days up to a few hours before the main seismic shock occurrence permit a real-time monitoring of the damage process during the last stages of ...
Chelidze, T. +2 more
core +2 more sources
International Journal of Mining Science and Technology, 2022 CO2 drilling is a promising underbalance drilling technology with great advantages, such as lower cutting force, intense cooling and excellent lubrication.
Can Cai +4 more
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Study on the breaking process of jointed rock mass by disc cutters based on digital image correlation and infrared thermography [PDF]
E3S Web of Conferences, 2021 Jointed rock masses are frequently encountered during the TBM excavation. To investigate the rock breakage mechanism of jointed rock mass by disc cutter and precursory information before rock failure, a series of indentation tests were performed on shear
Junning Xie, Bolong Liu, Nianchang Zeng
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