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Keywords: reduction
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Proceedings Papers
Research on Failure Mechanism of Pebble Slope Based on Nonsynchronous Double Strength Reduction Method
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-156
... heterogeneous pebble accumulation body is critical. The cohesive force and internal friction angle are nonsynchronously reduced through the software program by comparing the slope equivalent to the plastic strain area calculated by nonsynchronous reduction step conditions with the stress and strain data...
Proceedings Papers
Analysis of Rockburst Driving Mechanism Based on Unbalanced Force
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-206
... society iop publishing iop conf mechanism geologist geology reservoir geomechanics tunnel conference reservoir characterization stiffness journal rockburst geological subdiscipline environmental science 861 stability reduction schematic diagram plane rock mechanic chinese journal 11th...
Proceedings Papers
Beneficial Utilization of Sewage Sludge Ash Residues for the Stabilization/Solidification of As-, Cr-, and Cu-Contaminated Marine Sediments
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-325
... environment fraction sediment land reclamation remediation contaminated sediment mineral geologist sedimentology reservoir geomechanics geological subdiscipline hsse standard reservoir characterization strength cement issa residue reduction conference marine sediment compressive strength...
Proceedings Papers
Effects of Carbon Dioxide Sequestration on Coal’s Hydro-Mechanical Behaviour
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Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-009
... swelling effect to some extent, which is favourable for field projects. The results of UCS strength tests show that both strength and Young's modulus of any type of coal are significantly reduced due to CO 2 adsorption, and the reduction is higher for super-critical CO 2 adsorption than sub-critical CO 2...
Proceedings Papers
Failure Simulation in the Coal Seam Floor by FEM Strength Reduction
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Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-157
... ABSTRACT The plastic characteristics of the coal seam floor has been explored in this article on FEM stength reduction with the software of ANSYS, and the plastic area perforation process has been given. The slip scope given on FEM strength reduction are much close to the theoretical solution...
Proceedings Papers
Experimental and Numerical Study on Fracture Grouting by Fine Particle Cement
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Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-163
..., and the validity of the proposed model is verified by numerical simulation. flow in porous media aperture Proportion cement grout Laboratory injection test cement particle flow rate slit reduction Upstream Oil & Gas Simulation mechanism injection test water path grout density relative...
Proceedings Papers
Dynamic and Static Rock Mechanical Properties of Heavy Oil Sandstones
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Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-040
... Modulus and Internal Frictional Angle. The results are indicating a reduction of compressional velocity of about 20% at 1500C. The article describes the results and discusses the used methodology. thermal method enhanced recovery steam-assisted gravity drainage pore pressure reservoir...
Proceedings Papers
The Effect of Discontinuities in Uniaxial Compressive Strength Testing of Rock
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Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-024
... was 35.8 MPa, the strength of composite specimens having five segments was reduced by 50% to 17.9 MPa. This is despite the reduction in the slenderness ratio of each segment in the composite specimen that would usually result in an increase in strength. Less sensitive were changes in infill material having...
Proceedings Papers
Identification Of Porosity Damaged Zones Around A Perforation Tunnel Based On Dem Simulation
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Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-041
...) and accordingly metamorphous rock structure with lower porosity may be formed [18]. In these studies the porosity reduction also is considered due to grains compaction and/or creation of planar fractures around the perforation hole, and also validated by experimental results. petroleum engineering...
Proceedings Papers
Airblast Reduction In The Ube-Isa Limestone Mine
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Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-151
... on homes in the area. The matters are dependent on not only the airblast (sound) level but also the frequency. For reduction of airblast level, we have focused our studies on blasting free face area and blasting direction. And for control of frequency, we have focused on time delay of shot by using non...
Proceedings Papers
Impact Of Climate Change On The Stability Of Shallow Mines
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Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-134
... stability reduction climate change strength gallery water table pillar level variation underground cavity Catastrophe river ISRM International Symposium 2010 and 6th Asian Rock Mechanics Symposium - Advances in Rock Engineering, 23-27 October, 2010, New Delhi, India IMPACT OF CLIMATE CHANGE...
Proceedings Papers
Sarcheshmeh Pseudowedge Failure, A New Challenge In Expanding Western Sector Of Sarcheshmeh Copper Mine, Iran
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Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-064
... to intersect of a fault with the rock mass surrounding the walls of this area (figure 1), various wedge-like rocks have been progressively sliding on the fault plane [1]. Sarcheshmeh mine is being expanded as a result of cut off grade reduction. Existence and extension of near parallel faults has made...
Proceedings Papers
Environmental Aspects of Underground Construction And Exploration For Underground Structures State of the Art
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Paper presented at the ISRM International Symposium - 2nd Asian Rock Mechanics Symposium, September 11–14, 2001
Paper Number: ISRM-ARMS2-2001-005
... investigation excavation Hong Kong environmental law underground structure state underground work reduction urban area underground world underground construction rock mass Upstream Oil & Gas drainage inflow tunnel exploration geology investigation perturbation construction...
Proceedings Papers
A Numerical Investigation On the Failure of a Large Scale Rock Slope Failure
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Paper presented at the ISRM International Symposium - 2nd Asian Rock Mechanics Symposium, September 11–14, 2001
Paper Number: ISRM-ARMS2-2001-059
... associate with a reduction of material strength parameters. The results of this investigation suggest that a sign of a large scale collapse might have been seen in a relatively early stage of the slope excavation procedure. I. INTRODUCTION As one of the practical data interpretation methods, Sakurai et...
Proceedings Papers
Effect of Blast-vibration On the Strength of Curing Lining Concrete
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Paper presented at the ISRM International Symposium - 2nd Asian Rock Mechanics Symposium, September 11–14, 2001
Paper Number: ISRM-ARMS2-2001-134
... of cored hole at each rock block is about 100mm and the thickness of mortar lining model is about 12mm. strength specimen lining concrete Reservoir Characterization variation vibration level reduction tunnel Upstream Oil & Gas peak particle velocity concrete lining rock block...