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brittle strength of basaltic rock masses with

Brittle strength of basaltic rock masses with

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

Brittle strength of basaltic rock masses with

1993-6-1  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 and the conditions for predicting the types and occurrences of brittle structures such as joints and faults.

Limits on strength and deformation properties of

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 a factor of about

LIMITS ON THE BRITTLE STRENGTH OF PLANETARY

2014-1-6  Therefore, the strength parameters for intact rock must be adjusted by using RMR. It is apparent from Figure 1 that the calculated planetary radius change decreases exponentially with decreasing RMR values. Basaltic rock masses are found to have typical RMR values between 45 and 75 [15], corresponding to a fair to good rock mass quality.

(PDF) Strength and deformation properties of basaltic

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.

A rock-mechanical assessment of Mercury's global

2015-4-15  Strength of a basaltic rock mass. The brittle strength of a rock may be assessed with the empirical Hoek–Brown failure criterion (Hoek and Brown, 1980), given by: (4) σ 1 = σ 3 + m σ c σ 3 + s σ c 2, where σ 1 and σ 3 are the greatest and least principal stresses and σ c is the uniaxial (or unconfined

Limits on the brittle strength of planetary lithospheres

2015-10-30  Given the range of uncertainties of the strength parameters for basaltic and other polycrystalline mafic rock masses discussed in section 2, the radius change calculations were performed with nominal values (Table 1), consistent with the standard numbers for these rock types on Earth, and with a range of reported values [e.g., Schultz, 1995

Strength and Deformation Properties of Basaltic Lava

1993-3-1  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 rocks have been deformed in the brittle regime to form faults and perhaps dilatant cracks, in addition to folding

Lunar and Planetary Institute Provided by the NASA

2009-2-28  a Mohr envelope for intact basalt [3], and a brittle strength envelope based on Byerlee's law of rock frictional resistance [4,2,5]. However, planetary terrains of basaltic composition consist of much more than just intact basaltic rock. The aggregate basaltic material, termed the "rock mass," consists of both the intact rock and the

Macro-mechanical properties of columnar jointed

2011-12-2  From the geological structure of the columnar jointed rock mass, a visual model was established in software AUTOCAD by programming based on the algorithm of the Voronoi diagram. Furthermore, a program to convert the AUTOCAD model into 3DEC (3-dimensional distinct element code) model was developed, and a numerical model was established in 3DEC. Moreover, the results

compressive strength of basalt rock in oman

2021-4-11  Brittle strength of basaltic rock masses with applications . At elevated temperature ∼450°C and zero confining pressure reference values for the strength of intact basalt are Youngs modulus 57 GPa Poissons ratio 025 unconfined compressive strength 210 MPa and fracture toughness 2–28 MPa m ½ Corresponding values for a basaltic rock mass that incorporate the weakening effects of scale but

compressive strength of rock calculation

Brittle strength of basaltic rock masses with applications . Rock mass strength is defined by three parameters including unconfined compressive strength of intact basalt and two others related to the degree of fracturing of the material. Experimental results for elevated temperature extend the applicability of these parameters to the near

tensile and compressive strength of granite and basalt

Brittle strength of basaltic rock masses with applications. Values of tensile and cohesive strength for the basaltic rock mass are approximately one to two orders of magnitude lower than corresponding values for intact basalt. Temperatures comparable to those at the Venus surface may slightly increase the deformation modulus but decrease the

compressive strength of basalt rock

Brittle strength of basaltic rock masses with applications to Venus Jun 25, 1993 Rock mass strength is defined by three parameters including unconfined compressive strength of intact basalt . get price. Estimating uniaxial compressive strength of rocks Cited by: 31.

(PDF) Strength and deformation properties of basaltic

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.

LIMITS ON THE BRITTLE STRENGTH OF PLANETARY

2014-1-6  Therefore, the strength parameters for intact rock must be adjusted by using RMR. It is apparent from Figure 1 that the calculated planetary radius change decreases exponentially with decreasing RMR values. Basaltic rock masses are found to have typical RMR values between 45 and 75 [15], corresponding to a fair to good rock mass quality.

Strength and deformation properties of basaltic

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.

A rock-mechanical assessment of Mercury's global

2015-4-15  Strength of a basaltic rock mass. The brittle strength of a rock may be assessed with the empirical Hoek–Brown failure criterion (Hoek and Brown, 1980), given by: (4) σ 1 = σ 3 + m σ c σ 3 + s σ c 2, where σ 1 and σ 3 are the greatest and least principal stresses and σ c is the uniaxial (or unconfined

Numerical Simulations of Laboratory-Scale,

2020-2-20  Brittle Strength of Basaltic Rock Masses with Applications to Venus. Article. Jun 1993; J GEOPHYS RES; Richard A. Schultz; Rock mass strength is

Lunar and Planetary Institute Provided by the NASA

2009-2-28  a Mohr envelope for intact basalt [3], and a brittle strength envelope based on Byerlee's law of rock frictional resistance [4,2,5]. However, planetary terrains of basaltic composition consist of much more than just intact basaltic rock. The aggregate basaltic material, termed the "rock mass," consists of both the intact rock and the

basalt rock compressive strength

brittle strength of basaltic rock masses with applications. Values of tensile and cohesive strength for the basaltic rock mass are approximately one to two orders of magnitude lower than corresponding values for intact basalt. Temperatures comparable to those at the Venus surface may slightly increase the deformation modulus but decrease the

compressive strength of rock calculation

Brittle strength of basaltic rock masses with applications . Rock mass strength is defined by three parameters including unconfined compressive strength of intact basalt and two others related to the degree of fracturing of the material. Experimental results for elevated temperature extend the applicability of these parameters to the near

rock compressive strength basalt ivalor.es

compressive strength of basalt rock palikabazaar.in Brittle strength of basaltic rock masses with applications Rock mass strength is defined by three parameters including unconfined compressive strength of intact basalt and two others related to the degree of fracturing of the material.

Basalt Rock Compressive Strength

brittle strength of basaltic rock masses with applications to venus . 21 sep 2012 rock mass strength is defined by three parameters including unconfined compressive Read more. compressive strength of basalt rocks TY Concrete

What Is The Compressive Strength Of Basalt

Brittle Strength Of Basaltic Rock Masses With . Rock mass strength is defined by three parameters including unconfined compressive strength of intact basalt and two others related to the degree of fracturing of the materialxperimental results for elevated temperature extend the applicability of these parameters to the nearsurface environment of

LIMITS ON THE BRITTLE STRENGTH OF PLANETARY

2014-1-6  Therefore, the strength parameters for intact rock must be adjusted by using RMR. It is apparent from Figure 1 that the calculated planetary radius change decreases exponentially with decreasing RMR values. Basaltic rock masses are found to have typical RMR values between 45 and 75 [15], corresponding to a fair to good rock mass quality.

Numerical Simulations of Laboratory-Scale,

2020-2-20  Brittle Strength of Basaltic Rock Masses with Applications to Venus. Article. Jun 1993; J GEOPHYS RES; Richard A. Schultz; Rock mass strength is

Lunar and Planetary Institute Provided by the NASA

2009-2-28  a Mohr envelope for intact basalt [3], and a brittle strength envelope based on Byerlee's law of rock frictional resistance [4,2,5]. However, planetary terrains of basaltic composition consist of much more than just intact basaltic rock. The aggregate basaltic material, termed the "rock mass," consists of both the intact rock and the

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

compresive strengh baslat rock barkboats.cz

Estimating compressive strength General rock failure criterion can be reduced to a few parameters dependent on lithology (m) and the uniaxial compressive strength (C 0)Lithology is commonly derived during log analysis, so m may be estimated (Table 1)What is needed still is an initial measure of rock strength provided by C 0 C 0 can.