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Keywords: uniaxial compression
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1686
... ABSTRACT: In the process of exploring the mechanical properties of deep strata, we find that the granite after heat treatment has a negative Poisson's ratio effect. Therefore, we carried out the microstructure test and uniaxial compression experiment of granite in Gonghe basin of Qinghai...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0311
... reconstruction. The digital model is simulated using the software ABAQUS and the Drucker–Prager constitutive model via uniaxial compression. Results show that stress concentration usually occurs under axial load. The stress distribution law of elliptical pores is related to the inclination of the pores...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2117
... the thermal treatment levels were higher than 300 °C. The variation of mechanical parameters under compression showed a transition from thermal hardening to thermal cracking at 300 °C. The uniaxial compressive strength and Young's modulus significantly decreased only when the thermal treatment levels were...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1750
... coal uniaxial compression stimulation test mechanical property injection tensile strength 1. INTRODUCTION Coal Bed Methane (CBM) is a kind of promising energy. The air pollution and equipment corrosion can be reduced by using CBM because of its low sulfur content. At the same time, gas...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-526
... ABSTRACT: In this study two series of uniaxial compression and indirect tensile (Brazilian) tests, as well as a multi-stage triaxial compression test were performed in order to determine the mechanical properties and to develop a shear failure-criterion for a particular Cemented Paste...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0026
... Characterization upper loading platen international journal failure process splitting nonuniform loading compression complete stress-strain curve Wellbore Design stress-strain curve Rock mechanics specimen uniaxial compression load train 1. INTRODUCTION Complete stress-strain curve of brittle rock...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-173
... degradation dilatation wellbore integrity Wellbore Design material response MPa loading condition strain rate fracture energy mechanisms-based fracture model single element mesh uniaxial compression fracture fluid modeling equation of state geological material permeability Zubelewicz...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-552
... different temperature uniaxial compression application liquid nitrogen tensile strength 1. INTRODUCTION Hydraulic fracturing is necessary for the economic development of tight oil reservoirs. However, there will be a distinct production decline after a well has been produced for a few years after...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-510
... strength compression reservoir characterization end constraint uniaxial compression contact loading condition prism specimen stress-strain curve reservoir geomechanics rock specimen simulation peak strength constraint cylinder specimen post-peak behavior ideal loading condition...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-675
... process of rocks containing single flaws and under uniaxial compression. The new contact model was first validated by using it to simulate the experimental cracking process of gypsum containing pre-existing single flaws at different inclination angles. Then the influence of flaw shape (length...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-487
... Abstract A vast number of experimental and numerical studies have been performed in the literature to understand the fracturing process in brittle rocks under uniaxial compression; several types of cracks including tensile, shear, and combined tensile-shear have also been observed at the tip...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-179
... Abstract The interactions between defects are important in the behavior of brittle materials. The micromechanical interactions between a circular hole and a crack under uniaxial compression are investigated in this paper. Experiments of specimens containing a hole and a crack are conducted...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7068
... initiation specimen hydraulic fracturing wing crack einstein hh Reservoir Characterization element method DEM Coalescence loading fracture flaw compression open flaw tensile crack rock mass crack initiation application uniaxial compression propagation 1. INTRODUCTION It is well known...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-296
... initiated steeply inclined tensile cracks. en-echelon flaw international journal geometry evolution reservoir geomechanics Rock mechanics specimen Reservoir Characterization shear rupture gypsum flaw uniaxial compression Upstream Oil & Gas initiation Coalescence Coalescence Type...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-680
... Abstract: The sources of nonlinear deformation in hard rock under short term uniaxial compression can be attributed to crack closure, 6sliding, compaction and crack generation. The common approach to finding the modulus of a "hard rock" is to determine the linear part of stress-strain curve...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-615
... ABSTRACT: The objective of this study aims at increasing the understandings of the effects of bridge length and material on surface crack growth and coalescence. Both granite and PMMA specimens containing two parallel pre-existing surface cracks were tested under uniaxial compression. Two...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-119
... velocity and S-wave velocity decreased, the fracture has more influence on S-wave velocity than P-wave velocity; 2) under uniaxial compression, the curves of axial strain and the compression velocity can be divided into three stages: 3) the fracture has an important influence on mechanical parameters...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-211
... ABSTRACT: The computerized tomography (CT) scanning experimental system of uniaxial compression for coal or rock containing gas was developed. The system includes the industrial CT scanning system, uniaxial compression equipment for coal or rock containing gas, and equipment for measuring...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-339
... crack flaw numerical manifold method propagation uniaxial compression crack initiation shear crack manifold method friction angle 1. INTRODUCTION A number of studies have investigated the cracking processes in rocks containing artificially-created open flaws due to the ease fabrication. Pre...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-202
... that, relation between loading-rate dependency and creep was discussed with theoretical and experimental results, and applications of the ALR test in estimating long-term behavior of rock were described. Reservoir Characterization strength dependency uniaxial compression Upstream Oil & Gas peak...

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