Laboratory studies of geomechanical properties of deep-level rocks

Усольцева, О. М.; Еременко, А. А.; Shaposhnik, YuN; Цой, П. А.; Семенов, В. С.

doi:10.1088/1755-1315/262/1/012081

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Geomechanical parameters (uniaxial compression strength (UCS), static Young's modulus and Poisson's ratio, cohesion and internal friction angles) were determined using an INSTRON 8802 testing machine, a radial confining pressure chamber, strain gauges for measuring axial and radial deformations by INSTRON. The methodology for rock samples testing is described in [7]. Moreover, the propagation velocities of elastic compressional and shear waves were measured using an ultrasonic control and measuring device Pundit Lab.…”

Section: Resultsmentioning

confidence: 99%

Geomechanical parameters of sedimentary rocks of Southern Sakhalin

Kamenev

Богомолов

Усольцева

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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The samples of terrigenous rocks of the Sakhalin were selected for geomechanical studies: the rocks of the Nevelskaya and Kholmskaya Formations from the Petropavlovsk quarry; ones of the Kholmskaya Formation on the west coast of the south of Sakhalin, rocks of the Junonskaya Formation on the east coast. The Kholmskaya Formation N1hl is represented by siltstones and interlayers of fine-grained sandstone. The Nevelskaya Formation N1nv is represented by siltstones with inclusions of tufogenic material. The Junonskaya Formation T2-Jun is represented by variegated greyish-green jaspers. Their static and dynamic parameters (strength limits, static Young’s modulus and Poisson’s ratio, cohesion and angle of internal friction) were determined. The obtained results are characterized by a significant spread of values, which is likely explained by the significant fracturing of the initial samples and the effect of anisotropy.

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Section: Resultsmentioning

confidence: 99%

Geomechanical parameters of sedimentary rocks of Southern Sakhalin

Kamenev

Богомолов

Усольцева

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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“…In our numerical simulations, we assume the typical cohesion of a rubble-pile object, Y = 0.025ρ 2 /(a 1 a 2 a 3 ) 1/6 (Holsapple & Michel 2008;Black & Mittal 2015), and set three values of friction angle: φ = 25 • , approximately the friction angle of a close-packed rubble-pile composed by frictionless particles (Albert et al 1997), φ = 40 • , a typical value for rocks (Usol tseva et al 2019), and φ = 80 • , corresponding to a hypothetical case of an extremely packed core since φ 60 • are not generally found in nature (Yang & Luo 2018;Usol tseva et al 2019).…”

Section: Disruption Location Of a Rubble-pile Satellitementioning

confidence: 99%

Exploring the Recycling Model of Phobos Formation: Rubble-pile Satellites*

Madeira

Charnoz

Zhang

et al. 2023

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Phobos is the target of the return sample mission Martian Moons eXploration by JAXA that will analyze in great detail the physical and compositional properties of the satellite from orbit, from the surface, and in terrestrial laboratories, giving clues about its formation. Some models propose that Phobos and Deimos were formed after a giant impact giving rise to an extended debris disk. Assuming that Phobos formed from a cascade of disruptions and reaccretions of several parent bodies in this disk, and that they are all characterized by a low material cohesion, Hesselbrock & Minton showed that a recycling process may happen during the assembling of Phobos, by which Phobos’s parents are destroyed into a Roche-interior ring and reaccreted several times. In this paper, we explore the recycling model in detail and pay particular attention to the characteristics of the disk using 1D models of disk/satellite interactions. In agreement with previous studies, we confirm that, if Phobos’s parent bodies are gravitational aggregates (rubble piles), then the recycling process does occur. However, Phobos should be accompanied today by a Roche-interior ring. Furthermore, the characteristics of the ring are not reconcilable with today’s observations of Mars’ environment, which put stringent constraints on the existence of a ring around Mars. The recycling mechanism may or may not have occurred at the Roche limit for an old moon population, depending on the internal cohesion. However, the Phobos we see today cannot be the outcome of such a recycling process.

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Laboratory studies of geomechanical properties of deep-level rocks

Cited by 2 publications

References 7 publications

Geomechanical parameters of sedimentary rocks of Southern Sakhalin

Geomechanical parameters of sedimentary rocks of Southern Sakhalin

Exploring the Recycling Model of Phobos Formation: Rubble-pile Satellites*

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