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Keywords: concentration
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Proceedings Papers
Photoelastic Stress Analysis of Mode I Fracture Toughness Tests Using PMMA Samples
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Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-026
... distribution. Introduction Rock materials are usually discontinuous at all scales [1]. At the microscale, the presence of pores, grain boundaries, and pre-existing fractures can lead to high stress concentrations under increasing load. At the macroscale, foliation or bedding planes are characterized...
Proceedings Papers
Preventing Failure of the Anchoring System in Underground Coal Mines
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Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-166
... production chemistry oilfield chemistry pipeline corrosion coupon materials and corrosion flowline corrosion engineering australia government steel coating 2 corrosion inhibition practice iop publishing iop conf environmental science 833 concentration hiscc coating metals & mining epoxy...
Proceedings Papers
Assessment of Rockburst Hazard Based on the Data of Mine Seismology
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Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-101
... of seismic events, which are the velocity of a reduced center of seismic energy release and the apparent velocity of "migration" of individual seismic events closely timed within the ranges of stress concentration zones inside the mine fields. Verification of this criterion using an ample seismic data base...
Proceedings Papers
Airtightness Technologies for the Kurashiki LPG Storage Cavern
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-142
... Downstream Oil & Gas LNG water curtain tunnel shaft plug plug gas leakage storage cavern natural gas storage gas monetization operation shaft plug operation shaft concentration injection borehole shaft containment system excavation concrete plug water injection borehole permeability...
Proceedings Papers
Investigation of Coal Mine Roof Guttering at Magdalena Colliery-South Africa
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-158
.... Reservoir Characterization magdalena colliery-south africa bord specimen excavation reservoir geomechanics colliery horizontal stress test result metals & mining concentration shale magdalena colliery Poisson structural geology input parameter roof layer investigation Magnitude...
Proceedings Papers
Modeling Yield Propagation of Jointed Synthetic Rock
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-012
... Artificial Intelligence Einstein hydraulic fracturing concentration laboratory Reservoir Characterization structural geology wing crack mechanism Coalescence reservoir geomechanics Upstream Oil & Gas shear specimen bridge area joint tip tensile stress loading tensile...
Proceedings Papers
An Experimental Study on Mechanical Behaviour of Siltstone Under Brine Saturation
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-038
... also highly influences the fracking process, which however may significantly vary with the pore fluid concentration due to the associated brine-rock interactions creating rock structure re-arrangements. This study has therefore been aimed to investigate the effect of pore fluid (brine) concentration...
Proceedings Papers
Parameter Characterisation for Rock Mass Preconditioning using Hydraulic Fracturing
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-113
... reservoir geomechanics aperture epistemic uncertainty application hydraulic fracturing fracture aperture strain energy density Upstream Oil & Gas concentration characterisation parameter unpredictability hydraulic fracture Reservoir Characterization fracture extent information...
Proceedings Papers
Effect of Supercritical CO₂ on the Corvio Sandstone in a Flow-Thru Triaxial Experiment
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-225
... processes with a minor contribution of reactive phenomena. This is a relevant approach when considering the extent of the relative contribution of isolated hydro-chemo-mechanical processes. 1 INTRODUCTION Over the past 250 years, the concentration of green- house gases has increased in the atmosphere...
Proceedings Papers
X-Ray Fluorescence Methods for the Recognition of Minerals and Rocks. Application to Granite
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-042
... preparation. Reservoir Characterization wavelength recognition application radiation x-ray fluorescence fluorescence mineral Artificial Intelligence concentration analyzer Madrid Upstream Oil & Gas preparation information x-ray fluorescence method granite spectrum Feldspar x-ray...
Proceedings Papers
Impact of Destress Blasting on Stress Field Development Ahead of a Hardcoal Longwall Face
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-094
... Abstract Stress concentration and rockburst risk in coal mine are associated with the occurrence of competent strata in overburdened coal seams. Benches of sandstone and conglomerate are difficult unbreakable and a high level of elastic energy is stored there. It can be released as a rockburst...
Proceedings Papers
Control of Rockburst Risk in Hard Coal Longwall Mining – A Case Study
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Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-116
... of competent adjacent rocks in the roof of the seams and incomplete seam extraction in the overburden, cause irregular stress distribution in the rock mass and stress overflow in those regions with the highest stress concentration. Destress blasting in overlying competent rocks is a very important rockburst...
Proceedings Papers
Environmental Characterization of the Stress-Corrosion Cracking of Rockbolts in Underground Coal Mines using Laboratory and In-Situ Testing
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Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-037
... metals & mining Production Chemistry Upstream Oil & Gas Pipeline Corrosion Subsurface Corrosion Corrosion Inhibition materials and corrosion riser corrosion H2S management rockbolt Crosky Corrosion Management rawat 1976 laboratory concentration steel Sulfide New South Wales rock...
Proceedings Papers
The JAEA Grouting Test At the Grimsel Test Site: Numerical Simulation of the Grout Injection Process of Silica Sol In Fractured Rock Mass
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Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-127
... injection hole after injection of 160 minutes. The distribution of grout concentration as well as hydraulic conductivity reduction rate clearly shows the anisotropic infiltration of grout. 1 INTRODUCTION Grouting, which involves injection of grout material, is commonly used to decrease the hydraulic...
Proceedings Papers
On the Kinetics of the Chemical Reactions Underlying the Swelling of Anhydritic Rocks
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Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-086
... of the theoretical models for the swelling problem and of recent or ongoing investigations at different scales (micro- to mega- scale). concentration surface area anhydrite Reservoir Characterization Equilibrium concentration crystallization ion concentration Upstream Oil & Gas anhydrite...
Proceedings Papers
Rock And Rock Mass Instability Caused By Rotation of Non-spherical Grains Or Blocks
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Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-091
... rock can stabilize the rotating grains only when their concentration is below a critical value. The critical concentration is shown to depend upon the magnitude of compressive stress. There exists a critical magnitude when the critical concentration is zero such that the first rotating grain initiates...
Proceedings Papers
Temperature Dependence of Calcium Carbonate Precipitation for Biogrout
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Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-052
... of the temperature dependence of microbial metabolism. yeast Obihiro sample precipitation test Horonobe temperature dependence okayama caco 3 microorganism soil microorganism test tube precipitation Okinawa sample mold biogrout concentration caso 4 Sapporo metabolism 339 Rock Engineering...
Proceedings Papers
Response of Rock Mass to Technological Explosions In Mining the Rockburst-hazardous Iron-ore Deposits
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Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-017
... in the massif, and the horizontal stresses were 1.5-2.6 the vertical ones which equaled the overlying rock weight (yH = -16.5 to -73.0 MPa). Technological blasting creates anomalous stress concentrations in the vicinity of mine workings. Owing to this, elastic energy accumulates in rock masses and disturbs...
Proceedings Papers
Influence of Density-dependent Flow And Transport Processes In the Strá? Pod Ralskem Area
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Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-031
... waste management approximation Upstream Oil & Gas density-dependent flow density effect decontamination variant maryska Cenomanian aquifer operation aquifer Turonian aquifer sandstone initial concentration produced water discharge concentration porosity solute transport gIL...
Proceedings Papers
Analysis of the Stress Strain Formation In a Rock Mass In Mining the Split Layer
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Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-008
... geomechanics calculation split layer numerical calculation vertical stress metals & mining concentration stress Strain Formation stape pillar Reservoir Characterization vicinity critical value operation rock mass stope Baryshnikov Mining Stope stress state sublevel massif Eurock 2005...
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