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Contact UsRock UCS with Young s Modulus and Poissons Ratio Rock UCS with Young s Modulus and Poissons Ratio LibraTech Geotechnical OP 12 Jun 13 02 31 , To clarify, yes I am looking for the lab or intact rock c and phi values inferred via empirical relationships from the UCS and associated Secamt and Tangent E-value and poisson s ratios...
Rock Exposures Borehole Cores Borehole Wall Images Intact rock Block samples for testing Cores for testing Discontinuity masurements for Rock Mass Characterization Measurement of disconttinuity properties is limited and no possibility of measuring rock mass properties Flat-jack stress determination, larger-scale modulus and permeability tests...
The elastic modulus of intact rock is used for many rock engineering projects, such as tunnels, slopes, and foundations, but due to the requirements of high-quality core samples and associated sophisticated test equipment, instead the use of empirical models to obtain this parameter has been an ,...
The modulus of elasticity of intact rock E is an important rock property which is used as input parameter in the design stage of engineering projects such as slopes, tunnel and mining excavations...
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 the rock ,...
the dynamic Young s modulus, Ed, Poisson s ratio...
Deformability is characterized by a modulus describing the relationship between the applied load and the resulting strain The fact that jointed rock masses do not behave elastically has prompted the usage of the term modulus of deformation rather than modulus of elasticity or Young s modulus,...
Some Useful Numbers on the Engineering Properties of Materials Geologic and Otherwise GEOL 615 Coefficient of sliding friction For most rocks, varies between 08 and 05 A value of 060 would be a good number for general use Glass on glass 04 Rubber on concrete 075 Steel on steel 055 Angle of internal friction Rock 30...
An understanding of rock strength is important for designing recovery plans for a reservoir and for developing an appropriate reservoir simulationA detailed discussion of rock failure can be found in Rock failure relationships and Compressive strength of rocksBut the data needed for these methods may not be readily available, so there is a desire to use data available from well logs that are ....
Mar 10, 2012 0183 32 The modulus of elasticity of intact rock E i is an important rock property that is used as an input parameter in the design stage of engineering projects such as dams, slopes, foundations, tunnel constructions and mining excavations However, it is sometimes difficult to determine the modulus of elasticity in laboratory tests because high ....
Uniaxial Compressive Strength, Young s Modulus, Poisson s ratio Rock, Rock Strength, Rock Unconfined Compressive Strength, Rock Uniaxial Compressive Strength, Elastic Moduli Details Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures ASTM D7012C...
The mechanical properties of a reservoir rock, including elastic modulus E , bulk modulus K , shear modulus 181 and Poisson s ratio ν , can be calculated as static or dynamic properties Static mechanical properties can be calculated from tri-axial or uni-axial tests static tests , and dynamic mechanical properties can be calculated ....
A rock mass rating system provides a method of incorporating some of the complex mechanics of actual rocks into engineering design Moreover, the system was the first to enable estimation of rock mass properties, such as the modulus of deformation, in addition to providing tunnel support guidelines and the stand-up time of underground excavations...
Modulus of Elasticity of Rock Modulus of elasticity of rocks depend upon several factors, such as, Type of rock Porosity Grain size Water content Value of modulus of elasticity can be determined by static or dynamic methods Higher value of modulus of elasticity indicates good quality rock having sound composition Typical values of modulus of ,...
deformation modulus of the intact rock E i and the rock mass damage factor D The paper includes guidelines on the selection of the damage factor D and for estimating the intact rock modulus E i from the intact rock strength for cases where no reliable modulus measurements are available...
Intact sandtone can have a Young s modulus E ranging from 324 GPa , as such ranges of values are commonly quoted for the strength of rock and other geotechnical materials Ideally therefore ....
the failure may involve the intact rock only, the discontinuities only, or may be mixed and involve both the intact rock and the discontinuiti 2 TESTING OF INTACT ROCK FOR STRENGTH 21 Uniaxial Compression Recall the typical stress strain response curve for a specimen of intact rock under uniaxial compression see Figure 1 in Lecture Notes 5...
elastic modulus of jointed rock mass They selected two artificial neural network models for prediction of elastic modulus of jointed rock mass from the elastic modulus of corresponding intact rock and joint parameters such as joint frequency, joint inclination and joint roughness The results this research showed that artificial...
Anyway, you can check your value with tables, if it is a hard intact rock, young s modulus value should likely be in the order of a few GigaPascals up 20 GPa depending on rock type 1 GPa = 10000 kg/cm 2 = about 10000 tsf mccoyit RE E Young s Modulus of Intact Rock and its unit...
Mar 06, 2015 0183 32 This method of rock classification was introduced by Deer Miller in the year 1996 Two parameters are considered while classifying rocks on this method, which are Uniaxial compressive strength Modulus of elasticity Step by Step Method to Classify Rock Based on Engineering Parameters This method of rock classification consists of 3 steps, as given ,...
Evaluation of rock mass deformability is an important but very challenging task in the analysis and design of underground structures in rock Although various empirical correlation methods have been developed for determining the deformation modulus of rock masses, they come in many forms and are scattered in different sourc...
The laboratory tests have been used most frequently to determine Modulus of Elasticity of rocks The intact core rock samples representing the region were tested to determine their Young s modulus ....
This test method covers the determination of elastic moduli of intact rock core specimens in uniaxial compression It specifies the apparatus, instrumentation, and procedures for determining the stress-axial strain and the stress-lateral strain curves, as well as Young s modulus, E, and Poisson s ratio,...
Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures ASTM D7012D Uniaxial Compressive Strength, Young s Modulus, Poisson s ratio Rock, Rock Strength, Rock Unconfined Compressive Strength, Rock Uniaxial Compressive Strength, Elastic Moduli Details...
Empirical relations between rock strength and physical ,
Know Morethe considerable scatter in the data, for each rock type, there is a marked decrease in strength with Δt and ϕ, Fig 1 Comparison between different empirical equations listed in Table 1 for the dependence of the strength of 260 sandstones on a interval transit time or equivalently P-wave velocity , b Young s modulus, and c porosity...