brittle strength of basaltic rock masses with
Brittle strength of basaltic rock masses with applications ...
1993-6-25 · The properties of basaltic rock masses provide a more precise estimate of the strengths of basaltic lava flows on the terrestrial planets than other, more widely used approaches (intact rock or frictional strength of a through-going surface). Rock mass strength is defined by three parameters including unconfined compressive strength of intact ...
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Brittle strength of basaltic rock masses with applications ...
1993-6-1 · Brittle strength of basaltic rock masses with applications to Venus. Schultz, R. A. Abstract. Laboratory measurements of rock deformation in the brittle regime provide constraints on the response of rocks to stress. These values are essential parameters in tectonic models of near-surface deformation because they influence both the stress state ...
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Limits on strength and deformation properties of jointed ...
A study of strength and deformation measurements for basaltic rocks, along with consideration of the influence of fracturing using a rock mass classification system, documents the range of brittle response for basaltic rock masses. Although basalts vary widely in composition and other physical factors, many of the properties of a basaltic rock mass appear to vary within a factor of about
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Limits on strength and deformation properties of jointed ...
1995-1-1 · A study of strength and deformation measurements for basaltic rocks, along with consideration of the influence of fracturing using a rock mass classification system, documents the range of brittle response for basaltic rock masses. Although basalts vary widely in composition and other physical factors, many of the properties of a basaltic rock mass appear to vary within
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Strength and deformation properties of basaltic lava flows ...
1993-1-1 · Strength and deformation properties of basaltic lava flows on planetary surfaces Basaltic rocks are thought to constitute a volumetrically significant rock type on the Moon, Mercury, Mars, and Venus, in addition to the Earth. Spacecraft images of surfaces with known or suspected basaltic composition on these bodies, particularly on Venus, indicate that these
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(PDF) Strength and deformation properties of basaltic lava ...
1993-2-1 · A basaltic rock mass is the relevant material for which strength properties must be defined and calculated model stresses must be compared to in order to more accurately predict brittle deformation.
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Accretion mode of oceanic ridges governed by axial ...
2018-3-26 · Schultz, R. A. Brittle strength of basaltic rock masses with applications to Venus. J. Geophys. Res. 98, 10883–10895 (1993). Article Google Scholar 34. Sandwell, D. T. Thermal stress and the ...
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Strength of jointed rock masses | Géotechnique
2020-1-22 · Jointed rock masses comprise interlocking angular par- ticles or blocks of hard brittle material separated by discontinuity surfaces which may or may not be coated with weaker materials. The strength of such rock masses depends on the strength of the intact pieces and on their freedom of movement which, in turn, depends on the number, orientation, spacing and
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Strength of jointed rock masses - icevirtuallibrary
2020-1-22 · Strength of jointed rock masses E. HOEK* Jointed rock masses comprise interlocking angular par- ticles or blocks of hard brittle material separated by discontinuity surfaces which may or may not be coated with weaker materials. The strength of such rock masses depends on the strength of the intact pieces and on their
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1983 Hoek Strength of jointed rock masses - Rocscience
2021-11-12 · Strength of jointed rock masses 2 Strength of jointed rock masses Evert Hoek, Golder Associates, Vancouver, Canada Synopsis Jointed rock masses comprise interlocking angular particles or blocks of hard brittle material separated by discontinuity surfaces which may or may not be coated with weaker materials.
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(PDF) Strength and deformation properties of basaltic lava ...
A basaltic rock mass is the relevant material for which strength properties must be defined and calculated model stresses must be compared to in order to
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Strength and deformation properties of basaltic ... - CORE
A basaltic rock mass is the relevant material for which strength properties must be defined and calculated model stresses must be compared to in order to more accurately predict brittle deformation. For example, the various strengths of a rock mass are less than that of intact material of the same composition.
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STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES
2006-3-19 · STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS
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Strength of rock and rock masses | E.T. Brown | Taylor ...
2022-1-17 · ABSTRACT. Taking all of these factors into account, it can be seen that a rock failure criterion which will be of significant use to the underground excavation designer should satisfy the following requirements : Axial stress. Axial strain Stress-strain curves for brittle fracture in uniaxial compression. Axial stress.
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Rock strength characterization for excavations in brittle ...
2020-4-23 · 2 2 THEORETICAL BACKGROUND 2.1 Brittle rock failure envelopes Reliable estimates of the strength and deformation characteristics of rock masses are required for almost any form of analysis used for the design of slopes, foundations and underground
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Rock mass strength at depth and implications for pillar
2 Strength of brittle failing rock masses The practical estimation of rock mass strength commonly includes rock mass classification and empirical relationships. These approaches allow the derivation of equivalent continuous and homogenous rock mass properties, which intrinsically are discontinuous and heterogeneous, for modelling using continuum
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Strength of jointed rock masses | Géotechnique
2020-1-22 · Jointed rock masses comprise interlocking angular par- ticles or blocks of hard brittle material separated by discontinuity surfaces which may or may not be coated with weaker materials. The strength of such rock masses depends on the strength of the intact pieces and on their freedom of movement which, in turn, depends on the number, orientation, spacing and
Read More
1983 Hoek Strength of jointed rock masses - Rocscience
2021-11-12 · Strength of jointed rock masses 2 Strength of jointed rock masses Evert Hoek, Golder Associates, Vancouver, Canada Synopsis Jointed rock masses comprise interlocking angular particles or blocks of hard brittle material separated by discontinuity surfaces which may or may not be coated with weaker materials.
Read More
Practical Estimates of Rock Mass Strength - Rocscience Inc.
2021-11-12 · s m is the ‘tensile’ strength of the rock mass. This ‘tensile’ strength, which reflects the interlocking of the rock particles when they are not free to dilate, is given by: s s m i = m b - m b + s 2 2 4 (3) E In order to use the Hoek-Brown criterion for estimating the strength and deformability of jointed rock masses, three ...
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(PDF) Estimating the Strength of Jointed Rock Masses
Determination of the strength of jointed rock masses is an important and challenging task in rock mechanics and rock engineering. In this article, the existing empirical methods for estimating the ...
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STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES
2006-3-19 · STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS
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Rock strength characterization for excavations in brittle ...
2020-4-23 · 2 2 THEORETICAL BACKGROUND 2.1 Brittle rock failure envelopes Reliable estimates of the strength and deformation characteristics of rock masses are required for almost any form of analysis used for the design of slopes, foundations and underground
Read More
Strength of rock and rock masses | E.T. Brown | Taylor ...
2022-1-17 · ABSTRACT. Taking all of these factors into account, it can be seen that a rock failure criterion which will be of significant use to the underground excavation designer should satisfy the following requirements : Axial stress. Axial strain Stress-strain curves for brittle fracture in uniaxial compression. Axial stress.
Read More
Rock mass strength at depth and implications for pillar
2 Strength of brittle failing rock masses The practical estimation of rock mass strength commonly includes rock mass classification and empirical relationships. These approaches allow the derivation of equivalent continuous and homogenous rock mass properties, which intrinsically are discontinuous and heterogeneous, for modelling using continuum
Read More
Unloading Phenomena Characteristics in Brittle Rock
2017-5-5 · Unloading Phenomena Characteristics in Brittle Rock Masses The Open Civil Engineering Journal, 2014, Volume 8 181 Unloading Vary with Time and Depth. Through continuous monitoring the acoustic wave . velocity of rock mass in boreholes on the dam base, the regular of unloading rock masses varied with time and depth can be revealed.
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Estimating Rock Mass Strength - BM 1997 02
2009-1-8 · The strength of jointed rock masses is notoriously difficult to assess. Laboratory tests on core samples are not representative of a rock mass of significantly larger volume. On the other hand, in situ strength testing of the rock mass is seldom practically or economically feasible.
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Frontiers | Geomechanical rock properties of a basaltic ...
To do this, we evaluated the physical (porosity, permeability) and mechanical (strength) properties of basaltic rocks at Pacaya Volcano (Guatemala) through a variety of laboratory experiments, including: room temperature, high
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Rock Properties - Western University
2010-1-19 · strength and/or deformation ppproperties of the rock. • According to the classification system recommended by the International Society of Rock Mechanics (ISRM 1978c), rock may range from extremely weak to extremely strong depending on the unconfined compressive strength (or Point Load Strength Index) or approximate field identification.
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CLASSIFICATION // CHARACTERIZATION OF SOME
2015-2-13 · Intact rock strength . The uniaxial compressive strength of a rock material constitutes the highest strength limit of the rock mass of which it forms a part. It is determined in accordance with the standard laboratory procedures. For the purpose of rock mass classification, the use of the well -known point load strength index can be useful as the
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Study on Strength and Deformation Characteristic of ...
2009-5-16 · Rock is a discontinuous medium with fissures, fractures, joints, bedding planes, and faults. These discontinuities may exist with or without gouge material. The strength of rock masses depend on the behavior of these discontinuities or planes of
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