influences on strength of rock

Influence of degree of interlock on confined strength of ,

Dec 01, 2020 0183 32 Rock bridges have to fail before any sliding or rotation is possible and this has a major influence on the strength of non-persistently jointed rock ,...

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Effect of blasting on the strength of rock fragments ,

To estimate in-situ rock mass strength, the specific energy of drilling SE was calculated during blast hole drilling utilizing a continuous drill monitoring system Post-blast fragmentation was estimated using the Split image processing system Results from the study support the idea that increases in blast energy can enhance crushing and ....

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Review of Rock Properties Based on Drilling Parameters

measured compressive strength, tensile strength, impact strength, point load strength, wave velocity, Young s modulus, density and quartz content as the most important rock parameters influencing the drilling rate In another research, Kahraman et al 2000 did a very comprehensive study for presenting a new drillability...

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INFLUENCE OF INTACT ROCK STRENGTH ON ROCK MASS ,

INFLUENCE OF INTACT ROCK STRENGTH ON ROCK MASS MECHANICAL PROPERTIES ABSTRACT The Synthetic Rock Mass SRM approach has the potential to capture the mechanical behavior of large rock sampl In order for the method to be used with confidence it is necessary to gain a good understanding of the factors that influences its analysis...

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Using Artificial Neural Networks to Predict Influences of ,

The induced heterogeneity changes the rock properti This paper targets the gap in the existing literature regarding the adopting of artificial neural network approaches to efficiently and accurately predict the influences of heterogeneity on the strength of 3D-printed rocks at different strain rat...

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Influences of Loading Condition and Rock Strength to the ,

Mar 10, 2015 0183 32 The influences of displacing angle, joint gap, and rock strength to the performance of rebar bolts and D-Bolts are evaluated in this study A new method was developed to apply pull and shear loads to the bolt specimen in any combination so that a displacing angle can be established in the range from 0 pure pull to 90 176 pure shear In the tests, five ,...

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STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 ,

STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 INTRODUCTION 2 TESTING OF INTACT ROCK FOR STRENGTH 21 Uniaxial Compression 22 Point Load Testing 23 Uniaxial Tension 24 Indirect Tension Tests 25 Shear Tests 26 Confined Compression Tests Triaxial Tests 27 Biaxial and Multiaxial Tests 28 Other Tests 3 PARAMETERS ,...

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Shear strength of rock joints influenced by compacted ,

Sep 01, 2014 0183 32 In these conditions, the rock-to-rock contact influence becomes increasingly prominent In contrast, the effect of infill saturation can be distinctly observed for a thicker infill where the strength is governed by the infill alone...

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Influence of rock mass properties on TBM penetration rate ,

were carried out and the influence of each rock mass properties on the PR was determined individually The relationship between BTS of rock and PR of TBM has a very poor correlation coefficient r of 011 as shown in Figure 10 The relationship between UCS of intact rock and PR of TBM has a correlation coefficient 043 as shown in Figure 11...

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1 Which of the following is NOT a major factor that ,

Oct 29, 2016 0183 32 1 I am pretty sure that the following which is NOT a major factor that influences the strength of a rock is c age of rock 2 The answer for the second question is high temperature and high confining pressure 3 As heat and pressure increase, ductile deformation becomes more likely 4 Once the elastic limit of rock is surpassed, the rock may flow...

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Influence of grain size on strength of polymineralic ,

Aug 01, 2021 0183 32 The key internal micro-structures dictating the strength and deformation behavior of rocks include grain size distribution, mineralogical composition, fabric, grain shape, and micro-defects Among these, grain size, which is an inherent attribute that controls the heterogeneity of rocks, has attracted much attention worldwide...

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Stress impact on rock properties

Jan 19, 2016 0183 32 Rock strength models that define stress states at which brittle failure occurs follow stress trajectories that lie along the left edge of the data shown in Fig 2 It is clear that the ability of a rock to carry differential stress increases with confining stress To establish the exact relationship, rock strength tests are conducted at a ....

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A fault runs through it Modeling the influence of rock ,

A fault runs through it Modeling the influence of rock strength and grain-size distribution in a fault-damaged landscape S G Roy1,3, G E Tucker2, P O Koons3, S M Smith1,3, and P Upton3,4 1George J Mitchell Center for Sustainability Solutions, University of Maine, Orono, Maine, USA, 2Cooperative Institute for Research in Environmental Sciences and Department ,...

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Rock mass properties

The influence of sample size upon rock strength has been widely discussed in geotechnical literature and it is generally assumed that there is a significant reduction in strength with increasing sample size Based upon an analysis of published data, Hoek and Brown 1980a have suggested that the uniaxial compressive strength V cd...

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Compressive strength of rocks

STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 INTRODUCTI,...

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Experimental Study on Influence of Joint Surface ,

Jul 09, 2021 0183 32 2 The joint morphology has influence on the strength characteristics of rock mass with discontinuous joints Under the same normal stress, the shear strength, initial crack strength, and residual strength of rock mass with nonthrough joints increase with the increase of undulation angle...

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Which is not a major factor that influences the strength ,

Jan 23, 2017 0183 32 Rock Smash one of the rocksThen you ll get strength What is rock-ability a mixture of? Important influences on rockabilly include western swing, boogie woogie, and ,...

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Influence of Mineral Composition to Rock Strength on UCG ,

Influence of Mineral Composition to Rock Strength on UCG Process Zulfahmi1,IldremSyafri2,Abdurrokhim3, Ridho K Wattimena 4 1 R D Center for Mineral and Coal Technology,Jl Jend Sudirman No 623 Bandung, Indonesia 2, 3Faculty of Geology Engineering , Padjadjaran University,Jl Raya Bandung-Sumedang Km 21 JatinangorIndonesia...

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Influence of grain size heterogeneity on strength and ,

Influence of grain size heterogeneity on strength and microcracking behavior of crystalline rocks Jun Peng1,2, , Rock is typically a heterogeneous material composed of different types of inherent microstructur The , Influence of grain size heterogeneity on strength and microcracking behavior of crystalline rocks ....

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Evaluation of rock mass strength criteria

strength and a better rock mass strength estimation method should be developed This requires more case histories where the determined/estimated rock mass strength from the criteria/systems can be compared to the measured/determined rock mass strength Keywords Hard Rock Mass, Strength, Failure Criterion, Classification, Characterisation...

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What are the most important parameters effective on the ,

And then of course there are all parameters considered in different classification systems, where you can easily see which one influences the rock mass quality and thereby its ,...

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Using Artificial Neural Networks to Predict Influences of ,

Apr 18, 2021 0183 32 Pre-existing cracks and associated filling materials cause the significant heterogeneity of natural rocks and rock mass The induced heterogeneity changes the rock properti This paper targets the gap in the existing literature regarding the adopting of artificial neural network approaches to efficiently and accurately predict the influences of ,...

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What are the main factors that influence rock strength ,

Feb 15, 2020 0183 32 The factors that influence the strength of a rock and how it will deform include temperature, confining pressure, rock type, and time Rocks deform permanently in two ways brittle deformation and ductile deformation...

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Physical Properties, Strength and Durability of Selected ,

may also influence the durability as those with fine pores tend to be less durable compared to those with coarse pores 6 44 Durability of building stones depends chiefly on effective porosity, water absorption, saturation coefficient, and strength, which indirectly influence resistance of rock materials to crystallization pressure 7 113...

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PDF Influence of Rock Inhomogeneity on the Dynamic ,

Influence of Rock Inhomogeneity on the Dynamic Tensile Strength of Rock , It was shown that inhomogeneity of the microstructural strength ,...

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What are the four factors influencing the strength of a ,

Dec 14, 2010 0183 32 The factors that influence the strength of a rock and how it will deform include temperature, confining pressure, rock type, and time What are ,...

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Influence of rock percentage on strength and permeability ,

0183 32 Jul 18, 2020 0183 32 The rock percentage influence on the strength and permeability of mixtures were investigated The results obtained by this study have theoretical and engineering application value for the mixed co-disposal of mine waste rock and tailings Materials and methods Materials Tailing-waste rock mixtures consist of tailings and waste rock...

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Influences of Loading Condition and Rock Strength to the ,

Mar 10, 2015 0183 32 The influences of displacing angle, joint gap, and rock strength to the performance of rebar bolts and D-Bolts are evaluated in this study A new method was developed to apply pull and shear loads to the bolt specimen in any combination so that a displacing angle can be established in the range from 0 pure pull to 90 176 pure shear...

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Compressive strength of rocks

Jun 04, 2015 0183 32 Fluids can alter rock mechanical properties through fluid pressure, chemical reactions with mineral surfaces, and by lubricating moving surfac These effects are discussed in Pore fluid effects on rock mechanics Effect of grain size and texture In granular rocks, grain size also influences strength...

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Weathering of Rocks Types, Factors and Products Geology

Only the soluble carbonate differs in accordance with the metallic ions of the felspar type This chemical change in the rock produces definite alteration in the physical constitution of the rock- a soft H = 1 clay mineral is formed in place of a hard mineral felspar, H = 6 , thereby affecting the strength of the rock very significantly...

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