Folded fabric tunes rock deformation and failure mode in the. This is an amazing fact that begs the question how did that rock get there. Experimental study on rock deformation and permeability. Physicochemical processes in seismic faults sciencedirect. Experimental relationship between compressional wave attenuation and surface strains in brittle rock. Rawling,1 patrick baud,2 and tengfong wong department of geosciences, state university of new york. Come see the pec labs work on display at this years agu in san francisco. Specifically, the discussion is restricted to the results of quantitative experiments under confining pressures that is, of triaxial compression tests in which large flow or fracture was achieved. Permeability evolution and rock brittle failure qiang sun 1 lei xue 0. Use features like bookmarks, note taking and highlighting while reading experimental rock deformation. Ernie rutter has made, and continues to make, a significant impact in the field of rock deformation. Mervyn s paterson this monograph deals with the part of the field of ex perimental rock deformation that is dominated by the phenomena of brittle fracture on one scale or another. A lot of experimental tests for the xiangjiaba sandstone are carried out under different compression condition, including uniaxial compression, triaxial compression, uniaxial monocyclic compression and uniaxial loading and. Rock deformation studies are conducted to constrain the non.
The rock at the top of the peak is a marine limestone, deposited on the sea floor about 450 million years ago. According to the heterogeneous coal rock mass and multiple experimental 55, 5759 results, we obtained the variation law of the brittleductile transition inflection point stress of the rock see figure 6. He has studied brittle and plastic deformation processes that occur within both the oceanic and continental crust, as well as other key properties such as the permeability and seismic velocities of these rocks. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The principal aspects of brittle behavior are described. The interplay between fractures and anisotropic rock fabrics controls the deformation and failure processes of crustal rocks in a variety of tectonic settings 1,2,3,4.
Investigation on fracture toughness and microdeformation. Download deformation of earth materials or read online books in pdf, epub, tuebl, and mobi format. The imperative features of brittle habit are defined with specific awareness to the elemental actual points. Plastic strain ductile deformation permanent strain. An evergrowing group of scientists seeks to integrate rock deformation labs from across the. Through the analysis of apparent strain fields, two parameters are presented that reflect the degree of strain concentration and the degree of localization of its spatial distribution, respectively. Experimental study on rock deformation and permeability variation. Thermomechanical timedependent deformation and fracturing. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Experimental rock deformation the brittle field, 2nd ed. Brittle fracture and sliding summary general resources m. Experimental rock deformation the brittle field by m.
Paterson and tengfong wong, experimental rock deformation the brittle field, 2005 springer berlin and heidelberg, 358 pp, isbn 3540240233. The role of stress on chemical compaction of illite shale. Factors that affect deformation temperature pressure strain rate rock type the variation of these factors determines if a rock will fault or fold. Carboniferous sandstone with brittle failure even at the highest confining pressure.
This paper studies on the characteristics of strength and deformation of brittle rock under different compression condition by experimental tests. Experimental rock deformation the brittle field pdf free download as pdf file. According to the end point of initial fracture compression stage and elastic proportional point of stressstrain curve, the elastic deformation stage was determined. Currently published lithospheric strength profiles lack constraints from experimental data for shear failure of typical crustal materials in the brittle plastic transition regime in wet environments. The rearrangement of the stress field would then bring about a deformation of the reservoir rock and a change of the permeability. Experimental rock deformationthe brittle field ebook. Experimental rock deformation the brittle field pdf. Folded fabric tunes rock deformation and failure mode in. This experimental study was carried out to investigate rock deformation and its impact on axial permeability. This site is like a library, use search box in the widget to get ebook that you want.
Experimental rock deformation the brittle field kindle edition by paterson, m. In the present study, a series of uniaxial compression experiments were conducted on intact rock, and rock masses with single or double preexisting flaws, and then the strength, deformability, and fracture behavior of samples are investigated. Elastic and brittle near the earths surface more plastic and ductile deeper in the crust because of the increasing temperature and pressure. When stress exceeds the strength of the rock the rock will bend or fold 3. Experimental study on strength and deformation of brittle.
When stress exceeds the strength of the rock the rock will break or fracture 29. Experimental rock deformation the brittle field ebook. Request pdf experimental rock deformation the brittle field the primary aim of this monograph is to present the current knowledge of brittle properties of rocks as determined in laboratory. Based on this law, in the relation curve of the confining pressure and brittleductile modulus, a brittleductile modulus transition. Brittle failure takes over when the strain rate exceeds the plastic deformation rate. Laboratory sharing to improve rock deformation research eos. Click download or read online button to get deformation of earth materials book now. Rock mechanics an introduction for the practical engineer parts i, ii and iii first published in mining magazineapril, june and july 1966 evert hoek this paper is the text of three lectures delivered by the author at the imperial college of. Experimental relationship between compressional wave. Member, committee on fracture in compressive stress fields. In order to study the deformation displacement and the stress field of brittle rocks under harmonic dynamic loading, a series of systematic numerical simulations are conducted in this paper. Deformation of earth materials download ebook pdf, epub. Experiments on rocks under high pressure conditions in gta. Experiments on rocks under high pressure conditions in gta 20.
A 3d uniaxial compression simulation is carried out to calibrate and determine the property parameters of sandstone and a model of the cylindrical indenter intruding the rock is proposed. Laboratory sharing to improve rock deformation research. Numerical study on the elastic deformation and the stress. The mesoscale model accounts for material heterogeneity and local material degradation, and the model introduces the concept of a mesoscopic renormalization to capture the cooperative. Research article full text access the contribution of structural geology, experimental rock deformation and numerical modelling to an improved understanding of the seismic cycle. An experimental and ebsdbased study of amphiboles seismic anisotropys41d0547. Experimental study on the brittleductile response of a. This monograph deals with the part of the field of ex perimental rock deformation that is dominated by the phenomena of brittle fracture on one scale or another. In this discussion we will try to answer that question.
As you might imagine, natural substances behave according to their internal properties. A thermomechanical numerical model is proposed to describe the timedependent brittle deformation of brittle rocks under different constant temperatures and confining pressures. The stressstrain graphs below illustrate the bahavior of materials under stress. Preface to the special volume physicochemical processes in seismic faults. Causes of rock deformation stress pressure placed on rocks strain deformation of the rock strength rock resistance to deformation brittle deformation the rocks break or fracture. Experimental rock deformation is a relatively small scientific field in terms of.
Permeability evolution and rock brittle failure pdf paperity. Request pdf experimental rock deformation the brittle field the primary aim of this monograph is to present the current knowledge of brittle properties of. This monograph deals with the part of the field of experimental rock deformation that is dominated by the phenomena of brittle fracture on one scale or another. Environmental geology geol 406506 rock strength and behavior. Nov 10, 2017 the interplay between fractures and anisotropic rock fabrics controls the deformation and failure processes of crustal rocks in a variety of tectonic settings 1,2,3,4. An evergrowing group of scientists seeks to integrate rock deformation labs from across the united states into one shared national facility. Threedimensional brittle shear fracturing by tensile crack. The field of experimental rock deformations a very broad one, and this discussions necessarily limited t o a small part of it. At the same time, it functions as asuperb, graduatelevel introduction to fracture mechanics conceptsand analytical techniques. Fracture mechanics of concrete and rock this book offers engineers a unique opportunity to learn, frominternationally recognized leaders in their field, about the latesttheoretical advances in fracture mechanics in concrete, reinforcedconcrete structures, and rock. Experimental study of rock mechanics parameters in the. The experimental results show the evolution of damage, strain localization, crack propagation and failure in rock. Experimental rock deformation the brittle field springerlink. Experimental deformation of rocks and minerals onepetro.
Rock mechanics parameters are important during engineering investigation, design and construction, especially elastic modulus and poissons ratio. Thus a distinction has been drawn between the fields of brittle and ductile behaviour in rock, corresponding more or less to a distinction between the phenomena of fracture and flow. Tengfong wong the primary aim of this monograph is to present the current knowledge of brittle properties of rocks as determined in laboratory experiments. Experimental rock deformation the brittle field pdf brittleness.
Extra resources for experimental rock deformation the brittle field. The experimental results show that the deformation and strength properties of the gypsum in the triaxial state of stress do not significantly depend on the orientation of axial stress to the observed. Paterson, experimental rock deformation the brittle field, springerverlag. Experimental rock deformation the brittle field request pdf. Experimental rock deformation the brittle field dr. Acousticmechanical responses of intact and flawcontained. Rock deformation from field, experiments and theory. Rock mechanics an introduction for the practical engineer.
The development of a petroleum reservoir would inevitably induce a rearrangement of the insitu stress field. Previous attempts to deduce the stress distribution in the bending lithosphere near a consuming plate margin have relied on the observed bathymetry and an assumed constitutive relation for lithospheric behaviour, e. The results from the study corroborate that the ultrasonic changes are in fact influenced by the regions of tensile cracking, which is the primary inelastic deformation mechanism in brittle rocks. Threedimensional brittle shear fracturing by tensile crack interaction. Temperature and pore pressure effects on the shear strength of granite in the brittleplastic transition regime. Read online or download experimental rock deformation the brittle field pdf. Conventional triaxial shear fracture experiments were conducted to determine temperature and pore pressure effects on shear fracture strength of. Dilatancy, brittle strength, and anisotropy of foliated. Experimental characterization of strain localization in rock. Dilatancy, brittle strength, and anisotropy of foliated rocks. Triaxial compression tests were conducted on berea sandstone. Home about us subject areas contacts about us subject areas contacts.
Plastic deformation occurs when the strain rate is low, and leads to microscale foliation and largescale folding affecting the whole of the rock mass. A lot of experimental tests for the xiangjiaba sandstone are carried out under different compression condition, including uniaxial compression, triaxial compression, uniaxial monocyclic compression and uniaxial loading and unloading. Pdf experimental studies on the brittle fracture stress. Deformation of rock mount everest is the highest peak on earth at 29,028 feet above sea level. Threedimensional brittle shear fracturing by tensile. Experimental deformation and micromechanical modeling geoffrey c. Stress and temperature in the bending lithosphere as. They are either brittle or ductile, depending on the amount of stress applied. Temperature and pore pressure effects on the shear strength. The influence of gypsum layering was studied as well. Experimental rock deformation the brittle field 2, paterson. The rearrangement of the stress field would then bring about a deformation of reservoir rock and the change of a the permeability. Use features like bookmarks, note taking and highlighting while reading experimental rock deformation the brittle field.
605 117 205 280 1157 565 709 1279 1147 333 1355 675 948 404 1476 470 1128 1392 518 250 987 924 1232 1255 631 186 1255 734 1055 648 954 1231 317 888 1495 240 808 311 1498 270