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Keywords: shear
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Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-569
... Oil & Gas upward shear wing crack mechanism assemblage macroscale distortion echelon position extension fracture bond failure mining-induced fracture Fracture Zone fracture ARMA/NARMS 04-569 Origin of Mining-Induced Fractures Through Macroscale Distortion White, B. G., Larson, M...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0755
... ABSTRACT ABSTRACT: A new model of joint shear strength under cyclic loads is proposed. In the model, the joint roughness is divided into two parts: primary roughness and high order roughness. During the cyclic shear, the high order roughness will be sheared off gradually subjected...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0641
... and after the grouting injection. As a result, it is found that the shear moduli of the injection area are increased up to 20%. Also, investigated in this paper is the numerical analysis scheme to quantify the reinforcement effect. For this, a permeation grouting theory is assumed and the joint stiffnesses...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0353
... direction. Micro- seismic event locations associated with some of the treatments were used to establish the overall fracture orientation and size. 2.2 Opening mode and shear mode fracturing Conventional hydraulic fracturing, as performed to stimulate oil and gas wells and to measure in-situ stresses, almost...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1215
... 1 INTRODUCTION ABSTRACT: A new method for measuring the real area of contact between model joint walls is presented. The technique allows measurement of contact area changes at all stages of a compression or shear test. This provides an insight into the complex processes that contribute...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0121
... ABSTRACT ABSTRACT: The progressive shear failure development and evolution in brittle to brittle-ductile rock masses behavior is characterized by non-linear, inhomogeneous stress and strain distributions through the media in which various fracture modes intervene in sequence during simple...