Results 21 to 30 of about 3,961,642 (152)
Revisiting rock classification to estimate rock mass properties
Journal of Rock Mechanics and Geotechnical Engineering, 2019 This paper presents the results of ongoing research carried out by the author exploring methods to provide a more robust estimate of rock mass properties specifically for use in tunnel design.
Robert Bertuzzi
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Classification Method and Application of Rock Fracture Ability by Supercritical CO2 Blasting
Shock and Vibration, 2022 In order to study the fracture ability classification of rock mass under the cracking action of supercritical CO2 phase transition, based on the classification theory of rock mass in blasting engineering, an analytic hierarchy process (AHP)-entropy ...
Xiaohong Zhu, Jianhong Jia, Zhongwei Cai
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Study on Interfacial Crack Initiation of Jointed Rock Mass Based on Interface Fracture Mechanics
Fractal and Fractional, 2022 The fracture of interfacial crack is the main failure type of jointed rock mass. Therefore, it is very important to study the interfacial fracture of jointed rock mass. For the similarity of jointed rock mass and composites (all are composed by two parts,
Wei Gao, Xin Chen, Chengjie Hu
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A Rock Mass Classification Method for Tuff Tunnel Based on the High-Pressure Gas Expansion Method
Journal of Engineering, 2023 A precise rock mass grade result is crucial for directing the tunnel excavation engineering design. A novel rock mass classification method for tuff tunnel based on the high-pressure gas expansion method (HPGEM) was proposed, which was primarily built on
Huaide Peng +4 more
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AIP Advances, 2020 The response of rock mass to engineering activities related to environment greatly depends on the scale of rock mass. Therefore, the scale dependency of rock mechanical behavior under different rock mass conditions is investigated in this research.
Wenli Yao +2 more
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Numerical modeling of strain transfer from rock mass to a fibre optic sensor installed inside a grouted borehole [PDF]
, 2012 , 2023Strain measurements in underground excavation are usually done locally, with extensometers or similar devices placed within 10-15 meters of adit or stope faces, mainly to gage development of the EDZ (excavation damaged zone) and assess its ...
Dusseault, M.B. +3 more
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Applied Sciences, 2023 Continuous mining is one of the development goals for metal mines, and the application of coal mining equipment represented by shearers provides a reference for continuous mining. However, rock in metal mines is generally harder than coal, making cutting
Weipeng Xu +6 more
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Rock mass ratings and properties
, 2019 Engineers have excavated rocks for mining and tunnel purposes for hundreds of years. Unfortunately, there have been several occasions where a section or the whole tunnel collapsed in weak or heavily weathered rocks.
Gratchev, Ivan, Ivan Gratchev
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Kidney International ReportsBackground: Membranous nephropathy (MN) is a leading cause of nephrotic syndrome, driven by an immune response against a target autoantigen. To date, over 30 target antigens have been described in MN, creating the need for multiplex approaches.
Aaron J. Storey +7 more
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, 2019 This chapter introduces basic geology and discuss the effect of rock structures in relation to rock properties. Rock formation is a complex process that occurs in the lithosphere, and it is accompanied by tectonic activities such as plate movements ...
Gratchev, Ivan, Ivan Gratchev
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