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Keywords: convergence
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Proceedings Papers
Laboratory Procedure to Calibrate Non-Stressed Borehole Size
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0093
... of the measured borehole diametrical deformation. One of the key input parameters in this back-analysis method is the borehole convergence. To calculate the convergence, the initially-drilled borehole diameter before deformation is required. The rock mass in the ground is always under stress and a drilled hole...
Proceedings Papers
An Improved Time-Dependent Convergence Confinement Method for Estimation of Tunnel Support Loads in Squeezing Ground Conditions
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0941
... ABSTRACT: In tunnel construction, the total tunnel wall displacement increases due to face advancement and the time-dependent behavior of the surrounding rock mass. The convergence confinement method (CCM) is one of the approaches used to analyze the interactions between tunnel wall...
Proceedings Papers
Natural Sealing of Leaky Wells by Creep of Rocksalt
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0257
... geomechanics completion installation and operations geological subdiscipline reservoir characterization cylinder netherlands reduction deformation apparatus rocksalt mpa caprock aperture deformation geomechanics symposium upstream rocksalt creep convergence hydraulic aperture hydrocarbon...
Proceedings Papers
Engineering Geological Hazards Along Doroud-KhorramAbad Railway Rock NATM Tunnels
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0218
... such as wedge-failures and plan-failures, squeezing phenomena, karst formations, water inrush in the tunnel, hard and abrasive rock, landslides, and convergence are considered as primary causes of geotechnical risks in hard rock tunnelling. The primary objective of this study is to identify potential...
Proceedings Papers
New Afton Convergence Monitoring and Rehabilitation Planning in the B3 Footprint
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0461
... ABSTRACT: New Afton's B3 block cave footprint has been in steady state production since 2022. During mining, the production footprint is subject to changing stresses that have been observed to cause squeezing and convergence of the drift profile at drawpoints and extraction drives. This can...
Proceedings Papers
Nonlinear Acceleration of the Iterative-Sequentially Coupled Flow and Geomechanics Fixed Stress Scheme
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0501
... ABSTRACT: The iterative sequential fixed stress coupling scheme ( SC ) for coupled flow and geomechanics has proven to be unconditionally stable. However, SC suffers from poor outer loop convergence, particularly evident in tightly coupled poromechanics problems. This work addresses...
Proceedings Papers
Integrating Stress Fracturing and Bulking Monitoring for Deformation-Based Ground Support Design Calibration in a Deep Caving Operation
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0481
..., resulting in the transition toward the formation of shear fracturing. reservoir geomechanics excavation geology geological subdiscipline hydraulic fracturing displacement diederich footprint convergence criterion dmlz calibration excavation boundary geologist reservoir characterization...
Proceedings Papers
Tackling Data-Limited Rock Mechanics Models
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0554
... convergence data to identify significant variables and estimate future deformation and stability. The second case study focuses on ongoing analysis of coal burst mechanics and associated factors. Over the last three decades, a hybrid statistical-analytical methodology has been applied for identifying...
Proceedings Papers
Ground Support Asset Management
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0527
... and openings over three levels, including shaft access. The S.X. underground mine will be the launch site and be used as a testbed for trialing the Ground Support Asset Management program. Key aspects that degrade the useful life of elements are corrosion and deformation due to excessive convergence yielding...
Proceedings Papers
Explosion Resistance of Reinforced Concrete Refuge Alternative Wall Under Certain Abutment Loading
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0796
.... The convergences related to these stress redistributions around the mine openings might change their structural integrity and, subsequently, the explosion resistivity. Studying the effect of increasing vertical load like abutment stress on such underground mine stopping for the explosion resistance is difficult...
Proceedings Papers
A Comprehensive Constitutive Model Solver
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0865
.... tangent formulae gradient instruction tensor partition history convergence artificial intelligence calculation comprehensive constitutive model solver operator formulation matrix equation transformation software computation ARMA 22 865 A Comprehensive Constitutive Model Solver Chieslar...
Proceedings Papers
Stochastic Inversion of Wellbore Stability Models Calibrated with Hard and Soft Data
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0774
... chain monte carlo convergence ARMA 22 0774 Stochastic Inversion of Wellbore Stability Models Calibrated With Hard and Soft Data Nicolaidou, E. University of Bristol, Bristol, United Kingdom Birchwood, R.A., and Prioul, R. Schlumberger-Doll Research, Cambridge, Massachusetts, USA Rodriguez-Herrera...
Proceedings Papers
Assessing the Performance of Various Initial Support Systems for Tunneling in Swelling Clay – a Case Study from the Manikin Diversion Tunnel in Indonesia
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2356
.... To represent the swelling phenomenon, a zone of ground strength reduction is developed in the area surrounding the tunnel, and swelling pressure is exerted on the initial lining. This method is able to match the results of convergence monitoring. Numerical simulations show that the original initial support...
Proceedings Papers
Support Design Using the Ground Reaction Curve and Support Reaction Curves at Underground Limestone Mines
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1238
... pillar strength proceedings excavation grc reaction curve criteria strength convergence src stiffness ground reaction curve pillar deformation pillar deformation ARMA 21 1238 Support Design Using the Ground Reaction Curve and Support Reaction Curves at Underground Limestone Mines...
Proceedings Papers
An Overview of the Experimental Investigation of the Hydromechanical Behavior of an X Shaped Underground Intersection in the Callovo-Oxfordian Claystone
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1947
... surveys and convergence measurements) and from embedded sensors (deformation and pore pressure measurements). Different sensors, from extensometers and inclinometers to fiber optics and deformation gauges, will be installed. A multi-physical assessment of the fracture network around the intersection...
Proceedings Papers
Visco-Elastic-Plastic Solution for Deep Circular Tunnels in Squeezing Ground
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2156
... ABSTRACT: Tunnels constructed in soft rock and high field stress show significant gradual convergence with even after the excavation. This paper proposes a new visco-elastic-plastic solution for deep circular tunnel under squeezing conditions. The model is composed of Mohr-Coulomb plasticity...
Proceedings Papers
Monitoring and Managing Squeezing Ground at the Turquoise Ridge Underground Mine, Nevada
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1712
... characterization extensometer maximum failure zone reservoir geomechanics displacement failure zone upstream oil & gas rmr development drift shotcrete mesh safety factor rock mass strength ground support turquoise ridge inflatable bolt convergence excavation convergence rate ARMA 20 1712...
Proceedings Papers
Review of the Relation Between Pillar Load and Opening Convergence in Pillar Design Using the Ground Reaction Curve Concept
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0350
... investigation into the utilization of the GRC and SRC for the design of mine pillar support systems with respect to anticipated pillar loading and opening convergence. metals & mining Ground Control international conference Morgantown reservoir geomechanics convergence pillar load grc approach...
Proceedings Papers
Tracking Convergence, Spalling, and Cutter Roof Formation at the Pleasant Gap Limestone Mine Using LiDAR
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1566
... active mining. Cutter roof formation is also prevalent in the monitored area, and the location and severity of this damage can be easily tracked. Most damage to the roof was observed after failure had occurred, but at two locations convergence was detected that has not yet resulted in failure...
Proceedings Papers
Formation of a Sealing Well Barrier by the Creep of Rock Salt: Numerical Investigations
Available to PurchaseB. Orlic, J. Wollenweber, C. R. Geel, V. P. Vandeweijer, J. A. Meekes, G. J. Heerens, J. H. TerHeege
Publisher: American Rock Mechanics Association
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2079
... geology displacement halite operational safety reamed interval wellbore integrity Upstream Oil & Gas numerical simulation wellbore closure time closure time underbalance rock salt geomechanical numerical simulation creep axi-symmetric model convergence differential stress well barrier...
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