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Keywords: strength
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Proceedings Papers

Paper presented at the ISRM VIII Brazilian Symposium on Rock Mechanics - SBMR 2018, August 28–September 1, 2018
Paper Number: ISRM-SBMR-2018-10
... ABSTRACT: Intact brittle rock can fail in tension even when all principal stresses are compressive. This is due to lateral expansion and extension strain when near to a free surface, caused by Poisson's ratio. Exceeding tensile strength due to stress anisotropy and Poisson's ratio are the...
Proceedings Papers

Paper presented at the ISRM VII Brazilian Symposium on Rock Mechanics - SBMR 2016, October 19–22, 2016
Paper Number: ISRM-SBMR-2016-06
... shear strength obtained by applying this kind of model can be considered more advantageous for use in practice than that obtained from the analytical models. One of the advantages of this tool is that, once the synaptic weights and bias of the model are known, the prediction of the shear behaviour of...
Proceedings Papers

Paper presented at the ISRM VII Brazilian Symposium on Rock Mechanics - SBMR 2016, October 19–22, 2016
Paper Number: ISRM-SBMR-2016-03
... multiplication of the uniaxial compressive strength of intact rock by a reduction factor of strength, named JP, which represents the effects of discontinuities on the strength of rock masses. JP factor is a combination of the block size, measured in terms of volume (Vb), and the joint condition factor of the...
Proceedings Papers

Paper presented at the ISRM VII Brazilian Symposium on Rock Mechanics - SBMR 2016, October 19–22, 2016
Paper Number: ISRM-SBMR-2016-08
... machine learning Upstream Oil & Gas geomechanics abstract natural language strength Reservoir Characterization Engineering Rock mechanics Mining Science granada Roughness Coefficient discontinuity rock engineering mechanics roughness parameter sbmr 2016 JRC value Artificial...
Proceedings Papers

Paper presented at the ISRM VII Brazilian Symposium on Rock Mechanics - SBMR 2016, October 19–22, 2016
Paper Number: ISRM-SBMR-2016-04
... behaviour including compressive, tensile and triaxial strengths were also experimentally measured. The geotechnical property obtained through testing and analysis compared with literature and presented here in. The present work contributed geotechnical property of three volcanic rocks that can be used in...
Proceedings Papers

Paper presented at the ISRM VII Brazilian Symposium on Rock Mechanics - SBMR 2016, October 19–22, 2016
Paper Number: ISRM-SBMR-2016-01
... SUMMARY: The Uniaxial Compressive Strength (UCS) is widely used by professional engineers who work in designing surface or underground structures in geologic materials. This parameter is used to determine rock properties and characteristics. Moreover, it is important not only to analyze but...
Proceedings Papers

Paper presented at the ISRM VII Brazilian Symposium on Rock Mechanics - SBMR 2016, October 19–22, 2016
Paper Number: ISRM-SBMR-2016-23
... Reservoir Characterization Pilar goiás desenvolvimento mineral rock mass structural geology Brasil low-angle narrow vein gold mining estimation sn 13 1 0 metals & mining strength dilution sbmr 2016 long hole methodology Upstream Oil & Gas empirical geotechnical...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-013
... Summary Weak rock is usually defined as the intact rock presenting strength bellow about 25 MPa. Lately, more and more engineering projects are being built on sites dominated by soft rocks, as hard rocks might be absent in the region or the best geological sites have been already utilized...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-005
... results through a comparison with analytical and semi-analytical approaches. The strain and strength of rock structures subjected to bending process were modeled using a new contact model between every discrete element, which resulted in a better response than other conventional contact models...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-022
.... Geotechnical parameters (index properties, resistance to uniaxial and triaxial compression strength, deformability, disaggregation, slaking, drillability, erosion resistance, etc.) have been determined for the several rocks types, concerning various projects like roads, channels, dams, tunnels, etc. The...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-039
... & Gas hard rock Reservoir Characterization classification structural geology strength galván Dobereiner compressive strength Brazil US government Buenos Aires Rock mechanics soft rock sbmr 2014 sandstone rock material mechanics Engineering Geology rock mass São Paulo Rock...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-009
... obtained with these criteria were evaluated to verify the compatibility between the two methods. reservoir geomechanics Barton discontinuity Reservoir Characterization strength criteria MPa metals & mining Marino plane Bandis rock mass Hoek sbmr 2014 bandis criteria means...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-036
... Summary Firstly using FLAC3D , rock mass models are established and numerically compressed to analyse the effects of confining stress and dip angle of structural plane, respectively. The results indicates the constructed models are able to exhibit the effect laws that compressive strength of...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-019
... with the aim of observing the influence of the scale effect. The study also includes a comparative analysis between the results obtained in the research and the proposals made for the characterization of bimrocks and rock masses in general. The main result concludes that the shear strength parameters...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-020
... the Suretka formation in the Caribbean region. This geological process gave rise to what is currently described as conglomerates with a clayey silt to gravel matrix, being mainly characterized by a low uniaxial compressive strength (UCS) that is generally inferior to 20 MPa. These conglomerates have...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-045
... discontinuous rock masses. Due to high degree of weathering, especially in Sector 1, the geotechnical survey has presented many difficulties. Values of unconfined rock strength in Sector 1, measured by Schmidt Hammer, for instance, were influenced by the degree of weathering, as only less weathered portions...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-012
... and evaluate the possible effect on the seal rock integrity each type sample was characterized in laboratory. At the end of the tests, a significant change in the strength, elastic properties, mineralogy and structure of the porous medium in the samples that were subjected to heating process. This...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-042
... Summary In Petroleum, Civil and Mining Engineering, designing structures dealing with rock mass is a day-to-day activity. In order to execute such projects, it is essential to know the strength and deformability of rocks, as well as their in situ stress state. In Petroleum Engineering...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-016
... petroleum geomechanics. In reality a more sophisticated and more favourable series of coupled processes are likely to be involved. hydraulic fracturing strength shear Fisher complexity Upstream Oil & Gas geomechanics microseismic event Warpinski shale gas aperture natural fracture...
Proceedings Papers

Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, September 9–13, 2014
Paper Number: ISRM-SBMR-2014-029
... flows and flow-tops in basalts, foliation in gneisses, schistosity in schists and cleavage in slates, and faults through all the above. We can add igneous dykes, weathered horizons, and dominant joint sets. Each of the latter are rich potential or inevitable sources of velocity, modulus, strength and...

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