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Estimation of mechanical strength of basalt mass Estimation of mechanical strength of basalt mass Estimation of mechanical strength of basalt mass
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Size effects of the tensile mechanical behavior of basalt containing
11 小时之前 This phenomenon highlights the inconsistency between the low rock mass strength encountered in engineering sites and the extremely high rock strength observed in laboratory 2003年1月1日 The most widely used empirical relations, based on rock mass classifications, to estimate the rock mass compressive strength and deformation modulus are reviewed The estimates from the(PDF) A review of empirical methods used to estimate Values of tensile and cohesive strength for the basaltic rock mass are generally one to two orders of magnitude lower than corresponding values for intact basalt The shear strength of joints Limits on strength and deformation properties of jointed basaltic 2020年8月30日 In this paper, the deep and huge underground cavern excavated in basalt from a hydropower station under construction in the southwest of China is used to analyse the sensitivity of the IPs on the MPs, the displacement, and Sensitivity Analysis in the Estimation of Mechanical
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Practical estimates of rock mass strength ScienceDirect
1997年12月1日 The HoekBrown failure criterion was originally developed for estimating the strengths of hard rock masses Because of the lack of suitable alternatives, the criterion has 2022年9月17日 These properties are classified into the strength parameters (rock cohesiveness, friction angle, and unconfined compressive strength of the rock) and the elastic parameters (bulk and shear(PDF) Review of Mechanical Rock Properties This paper presents a review of the estimation of rock mass strength properties through the use of GSI The GSI classification system greatly respects the geological constraints that occur in GSI: A GEOLOGICALLY FRIENDLY TOOL FOR ROCK MASS 2024年3月4日 Combining photos of rock mass fractures and joint distribution obtained through sampling robot enables determination of the GSIvalue of the rock mass, facilitating further Estimating the Mechanical Properties of Rocks and Rock Masses
Characterization and correlation of engineering properties of
2021年2月4日 The mechanical tests involved the determination of the uniaxial compressive strength (UCS), the indirect tensile strength, or Brazilian strength test (BST), and the point 2020年8月24日 1 Introduction The complex nature and uncertain behavior of rock mass due to anisotropic and presence of unconformities make the rock mass as difficult material for empirical and numerical modeling [1 – 5]Modeling of Review of the Geological Strength Index (GSI) as an 2018年9月6日 This study examines the influence of the physicomechanical properties of the intact rock of aggregate materials on the strength performance of a concrete For this aim, nine different aggregate types were produced from nine different intact rocks, and they were used in the production of nine different concretes The physical and mechanical properties of the Estimation of Compressive Strength of Concrete Using PhysicoMechanical 2019年6月14日 It is not widely accepted that the dynamic strain rate experienced by a rock mass during an earthquake is lower than that during a high strain rate scenario such as an explosion or a rock burst The present study investigated the problem of determining the mechanical properties of rock considering earthquake effects using experimental tests and Estimation of the Mechanical Properties of Igneous Rocks in
Estimation of the performance of the tunnel boring machine
2016年2月1日 Estimation of the performance of the tunnel boring machine (TBM) using uniaxial compressive strength and rock mass rating classification (RMR) – a case study from the Deccan Traps, India2020年8月30日 Sensitivity Analysis in the Estimation of Mechanical Parameters of Engineering Rock Mass Based on the Hoek–Brown CriterionSensitivity Analysis in the Estimation of Mechanical Parameters 2023年4月30日 Tables 2, 3 present mathematical models proposed for the prediction of UCS values based on SHR or UPV values, for different types of stones [87,88,89,90,91,92,93,94,95,96,97,98,99] In this work the dependency between parameters UCS, SHR, UPV is investigated Most of the literature data on the estimation of UCS are in the Estimation of compressive strength of various stones based on 2013年5月8日 In the general case that the reference system bound to the specimen differs from the coordinate system to which the loading refers, as seen in Fig 2, the second system needs to be rotatedIn the specific case, the zx′z″ convention is usedThis is one of the 12 sequences of rotations, known as Euler’s conventions, that can be used to transform coordinates from one Estimation of the Strength of Stratified Rock Mass
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Estimation of the Poisson's Ratio of the Rock Mass Academia
The following rock mass classification systems are employed, focusing on the Poisson's ratio of the rock mass: • Rock Mass Rate – RMR [27, 28] • Rock Mass Quality Rate – RMQRvalue [29] • Rock Mass Quality (Qvalue) [30] • Geological Strength Index – GSI [31, 32, 33] 31 Rock Mass Rate (RMR) Bieniawski [27, 28] published the details of a rock mass classification called the 2004年1月31日 Estimation of rock mass deformation modulus and strength of jointed hard rock masses using the GSI systemEstimation of rock mass deformation modulus and strength of 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 strength and deformation properties of jointed basaltic 2023年11月20日 Under the nominal temperature, the tensile strength of basalt fiber is greater than that of glass with 2850 MPa and 2450 MPa, respectively, considering it has a better alternative for glass At high temperatures of Estimation of Impact Strength of Kevlar/Basalt and
Prediction of Uniaxial Compressive Strength of Rock Using
2022年10月9日 The uniaxial compressive strength of rock is one of the most significant parameters required for analysis of rock mass, its characterization, and design of foundations Direct determination of the uniaxial compressive strength of rock is timeconsuming, expensive, and requires destructive laboratory or field testing Therefore, indirect methods based on Attempts have been made to analyse the mechanical properties of Kevlar/Basalt intrawoven composite using various mechanical tests to determine the strength of each specimens The specimens are cut out from the composite plate according to the ASTM standards required to carry out the following testscompression, tensile, interlaminar shear stress and Izod impact testEstimation of Mechanical Properties of Kevlar/Basalt Intrawoven 2023年1月9日 This study investigates the engineering and mechanical properties of basalt fiberreinforced (FRF) concrete, giving special attention to residual flexural strength and dynamic modal parameters These properties, which have not been thoroughly investigated elsewhere, are a precursor to structural design applications for dynamic compliant structures (ie, bridges, Engineering, Mechanical and Dynamic Properties of Basalt Fiber 2020年2月1日 The determination of rock mass mechanical properties is critical for the design of many engineering infrastructures, such as slopes, tunnels and foundations 1, 2 However, it is not easy to estimate the strength and deformation characteristics of fractured rock masses because of the existence of various discontinuities, like joints, fractures, faults and bedding planes in the Estimation of REV for fractured rock masses based on Geological
Estimating the Mechanical Properties of Rock Masses
2008年1月1日 Tunnel instability and brittle failure as a function of GSI and the ratio of the maximum farfield stress, σ 1 , to the unconfined compressive strength, σ ci (after Kaiser et al, 2000)2023年11月20日 Estimation of Impact Strength of Kevlar/Basalt and Kevlar/Glass Interwoven Composite Laminate after HighVelocity Bullet Impact November 2023 Advances in Materials Science and Engineering 2023(4):18Estimation of Impact Strength of Kevlar/Basalt and Kevlar/Glass 2019年4月9日 The strength of the basalt specimen decreases noticeably from its uniaxial compressive strength if the specimen inclination angle changes from 0° to 15° The empirical pillar strength formulae derived from vertical pillars cases may be inapplicable to inclined pillars even if the coal seam or orebody is thought to be subhorizontal (having a dip angle that is less than Mechanical Properties of Basalt Specimens Under Combined Compression 2003年1月1日 Basalt 62 437 00147 05 86 61 221 185 394 330 Mechanical Properties of Rocks, vol III, an empirical rock mass strength estimation criterion based on quantitative input parameters(PDF) A review of empirical methods used to estimate rock mass
Empirical models for compressive and tensile strength of basalt
2023年11月14日 Basalt fibers (BF) are produced from the basalt rocks which are formed because of volcanic lava solidification BF are abundantly found on earth due to their volcanic origin 1,2BF have higher Narimani et al Period Polytech Civ Eng 3 A thorough analysis of Poisson's ratios for common oxides, silicate minerals, and rocks is given in Ji et al'sEstimation of the Poisson's Ratio of the Rock Mass ResearchGate2017年6月19日 Weathering on the surface of rocks reduces the mechanical strength by reducing cohesion and friction along the discontinuity surfaces (Piteau 1970; Flatland 1993) The degree of weathering in a rock mass is determined on the basis of the change in its strength and extent of alteration on its surface and also along the fractures or discontinuitiesEstimation of petrographic factors of Deccan basalt using petro 2019年10月1日 The uniaxial compressive strength (UCS) of rock is an important parameter required for design and analysis of rock structures, and rock mass classificationEvaluation of empirical estimation of uniaxial
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Estimation of rock mechanical properties by macro indentation
2023年5月30日 The mechanical properties of rock, especially the uniaxial compressive strength (UCS), the elastic modulus (E), and the Brazilian tensile strength (BTS) are critically important for rock engineering Since standard laboratory tests have some limitations, various indirect methods have been developed for estimating these mechanical properties, eg, the indentation test In 2021年11月23日 is the shear strength at e ff ective confining pressure σ 0, c 0 is the cohesion, and φ f 0 is the internal friction angle, is a commonly used failure criterion for soil and rockCalculating the cohesion and internal friction angle of volcanic 2018年3月23日 Uniaxial compressive strength (UCS) is one of the crucial parameters controlling the strength of rock masses (Hu et al 2012) A reliable and direct measurement of this parameter in the laboratory requires wellprepared samples and certified testing apparatus (Heidari et al 2012) As an indirect method, index tests have been widely used to estimate the UCS of rock, A Validation Study for the Estimation of Uniaxial Compressive Strength 2018年9月28日 Properties of such a sustainable concrete could be improved through the inclusion of nonmetallic fibers into the mixture [24][25][26][27][28][29][30]Mechanical Property Tests and Strength Formulas of Basalt Fiber
Estimation of the Mechanical Properties of Igneous Rocks in
2019年11月1日 Estimation of the Mechanical Properties of Igneous Rocks in Consideration of Seismic the rock mass strength properties can be estimated For the BHT basalt, MR = 148; for the DGS granite,2022年12月13日 High strength concrete is the requirement of today's era as lots of multistorey structures requires advanced materials to inculcate the need of the structure []The use of high strength concrete in modern structures is increasing day by day due to reduced dead load of the structural columns which in turns reduce the cost []High strength concrete possesses high Mechanical properties of high strength concrete incorporating 2023年2月10日 Experimental Estimation of Energy Absorbed and Impact Strength of Kevlar/BasaltEpoxy Interwoven Composite Laminate Added with Al2O3 Nanoparticles after HighVelocity Bullet ImpactExperimental Estimation of Energy Absorbed and Impact Strength 2020年8月24日 1 Introduction The complex nature and uncertain behavior of rock mass due to anisotropic and presence of unconformities make the rock mass as difficult material for empirical and numerical modeling [1 – 5]Modeling of Review of the Geological Strength Index (GSI) as an
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Estimation of Compressive Strength of Concrete Using PhysicoMechanical
2018年9月6日 This study examines the influence of the physicomechanical properties of the intact rock of aggregate materials on the strength performance of a concrete For this aim, nine different aggregate types were produced from nine different intact rocks, and they were used in the production of nine different concretes The physical and mechanical properties of the 2019年6月14日 It is not widely accepted that the dynamic strain rate experienced by a rock mass during an earthquake is lower than that during a high strain rate scenario such as an explosion or a rock burst The present study investigated the problem of determining the mechanical properties of rock considering earthquake effects using experimental tests and Estimation of the Mechanical Properties of Igneous Rocks in 2016年2月1日 Estimation of the performance of the tunnel boring machine (TBM) using uniaxial compressive strength and rock mass rating classification (RMR) – a case study from the Deccan Traps, IndiaEstimation of the performance of the tunnel boring machine 2020年8月30日 Sensitivity Analysis in the Estimation of Mechanical Parameters of Engineering Rock Mass Based on the Hoek–Brown CriterionSensitivity Analysis in the Estimation of Mechanical Parameters
Estimation of compressive strength of various stones based on
2023年4月30日 Tables 2, 3 present mathematical models proposed for the prediction of UCS values based on SHR or UPV values, for different types of stones [87,88,89,90,91,92,93,94,95,96,97,98,99] In this work the dependency between parameters UCS, SHR, UPV is investigated Most of the literature data on the estimation of UCS are in the 2013年5月8日 In the general case that the reference system bound to the specimen differs from the coordinate system to which the loading refers, as seen in Fig 2, the second system needs to be rotatedIn the specific case, the zx′z″ convention is usedThis is one of the 12 sequences of rotations, known as Euler’s conventions, that can be used to transform coordinates from one Estimation of the Strength of Stratified Rock MassThe following rock mass classification systems are employed, focusing on the Poisson's ratio of the rock mass: • Rock Mass Rate – RMR [27, 28] • Rock Mass Quality Rate – RMQRvalue [29] • Rock Mass Quality (Qvalue) [30] • Geological Strength Index – GSI [31, 32, 33] 31 Rock Mass Rate (RMR) Bieniawski [27, 28] published the details of a rock mass classification called the Estimation of the Poisson's Ratio of the Rock Mass Academia2004年1月31日 Estimation of rock mass deformation modulus and strength of jointed hard rock masses using the GSI systemEstimation of rock mass deformation modulus and strength of
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Limits on strength and deformation properties of jointed basaltic
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