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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0860
... ABSTRACT: Rebar type rock bolts of 22 mm diameter and length of 600 mm were instrumented with four strain gauges along the length. The embedded length of the bolt was 450 mm grouted with resin inside a cement mortar cylindrical sample of diameter 250 mm. The diameter of the drill hole...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0932
... geological subdiscipline journal experiment history loading sedimentary rock mudrock reservoir characterization germaine setup evolution strength solid earth knowledge storage mpa integrity geophysical research oedometer gauge compressibility ARMA 24 0932 A novel high-stress method...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0194
... rock type geological subdiscipline propagation loading geology reservoir geomechanics strength mpa granite vibration cyclic loading attenuation determination rock mechanic new mexico investigation phyllite journal tangent young gauge variation ARMA 24 194 Dynamic Rock Testing...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0602
... international journal different rock type mining science zhang rock mechanic tensile crack speed fracture toughness upstream oil & gas hydraulic fracturing geological subdiscipline crack propagation velocity gauge crack speed wang engfracmech ARMA 23 0602 How Fast Can Tensile Cracks...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-046
... a deviatoric compression test for either of these orientations). dynamic measurement reservoir geomechanics Reservoir Characterization orientation compression test Upstream Oil & Gas deviatoric stress gauge axis hydrostatic pressure GPa plug Poisson bedding plane shale Utica Shale...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7454
... Abstract This paper presents 3D desktop laser scanning as a tool for roughness characterization of rock joints, in conjunction with traditional 2D contour gauge profiles. Four specimens representing four different rock types (schist, granite, slate, and sandstone) and roughness values were...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-389
... accuracy hole outline numerical calculation Infinity strain gauge Symposium Reservoir Characterization hydraulic fracture Upstream Oil & Gas circular deformation gauge angle sector deformation permeable rock stress state estimation deformational measurement determination fracture...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-519
... mined today [4] but that the ratio of horizontal stress to vertical stress is largest within the first 450m (1,500’) of depth [5]. Upstream Oil & Gas horizontal stress Reservoir Characterization orientation metals & mining gauge variation regional stress field reservoir...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-497
... based on resistive strain gauges according to two scenarios ( i ) load cells positioned at the head of the bolt, and ( ii ) resistance strain gauge arrays recessed into grooves along the length of the bolt. Both approaches are complimentary with the selection criterion for each depending on factors...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-823
... are installed on Mount Rushmore to measure the relative movement of four critical rock blocks located within the sculpture. Measurements are performed using high resolution displacement gauges mounted astride fractures that form the rock blocks. The purpose of the monitoring program is to assist in determining...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-1013
..., and Stillwater). Axial and shear loads were determined by strain gauges to levels of instrument accuracy of ±5 N or ±5 microstrain as these loads were transferred to the instrumented cable bolts. These gauges were 12.5 mm long and embedded into a remanufactured king wire that replaced the conventional king wire...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-1181
... of stress in the pillars. metals & mining stress component logger rpr value Upstream Oil & Gas numerical analysis gauge Reservoir Characterization stress magnitude reservoir geomechanics doorstopper technique normal stress component parallel assumption normal stress component...
Proceedings Papers

Paper presented at the The 34th U.S. Symposium on Rock Mechanics (USRMS), June 28–30, 1993
Paper Number: ARMA-93-0613
... of a 1.8-m-diameter vertical excavation. Each station consisted of four strain rosettes located around the circumference of the raise, and each rosette included five gauges, formed by a pair of measurement pins. Brady et al. [2] concluded that the bored raise overcoring method successfully determined...
Proceedings Papers

Paper presented at the The 33rd U.S. Symposium on Rock Mechanics (USRMS), June 3–5, 1992
Paper Number: ARMA-92-0471
... extensometer strand bond zone bond length permanent displacement Anchor gauge full scale field test rock anchor deformation test program grout diorite Rock Mechanics, Tillerson & Wawersik (eds) ¸ 1992 Balkema, Rotterdam. ISBN 90 5410 045 1 Full scale field tests of high capacity rock anchors G.A...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-035
... to obtain a more detailed stress pro- file. XLOT's incorporate the following modifications designed to obtain accurate stress data: 1) At least two and preferably three leakoff cycles are conducted, 2) Accurate electronic pressure transducer gauges are used to measure surface and optimally downhole pressure...
Proceedings Papers

Paper presented at the The 31st U.S. Symposium on Rock Mechanics (USRMS), June 18–20, 1990
Paper Number: ARMA-90-0489
... hydraulic fracturing Rock mechanics operation Upstream Oil & Gas shaft stress measurement mechanism subsidence compressive strength pillar specific energy specimen application Escarpment granite Artificial Intelligence displacement envelope gauge excavation deformation fracture...
Proceedings Papers

Paper presented at the The 31st U.S. Symposium on Rock Mechanics (USRMS), June 18–20, 1990
Paper Number: ARMA-90-0413
... Reservoir Characterization reservoir geomechanics metals & mining potash stress relief curve Newcastle upon Tyne principal stress circumferential gauge gauge HI cell strain rate pilot hole overcore stress measurement resin installation overnight monitoring borehole creep stress relief...
Proceedings Papers

Paper presented at the The 27th U.S. Symposium on Rock Mechanics (USRMS), June 23–25, 1986
Paper Number: ARMA-86-0801
... gauge national laboratory loading Upstream Oil & Gas test chamber rock bolt boundary tunnel lawrence livermore national laboratory Lawrence Livermore cavity Hedef LARGE OPENINGS 2 Chapter 113 PRELIMINARy STUDIES OF REINFORCEMENT DYNAMICS FOR A REUSABLE UNDERGROUND TEST CHAMBER Richard...
Proceedings Papers

Paper presented at the The 27th U.S. Symposium on Rock Mechanics (USRMS), June 23–25, 1986
Paper Number: ARMA-86-0200
... on, and printing signals from, a transducer and two strain gauges. A detailed description of the apparatus is given by G. Swan et al. (1). The proposed test strategy involves first a 3-point flexure test on a notched core specimen, followed by a 4-point flexure test on the separated specimen halves. Finally, point...
Proceedings Papers

Paper presented at the The 25th U.S. Symposium on Rock Mechanics (USRMS), June 25–27, 1984
Paper Number: ARMA-84-0989
... at the Anvil Points Mine, Colorado, in the thick oil shale beds of the Green River formation. Part of the program included obtaining data about fragmentation by instrumenting the tests with accelerometers, velocity gauges, and the CORRTEX technique (Continuous Reflectomerry for Radius versus Time Experiments...

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