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Keywords: abutment
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0862
... tunnel faces, thereby elucidating failure scenarios and potential remedies. geologist structural geology sedimentary rock tunnel clastic rock compressional tectonics reservoir characterization stability modeling & simulation geological subdiscipline excavation abutment plate...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0056
... demonstrate the de-stress blasting program that was executed in two different sill pillars to divert increased stress conditions away from active workings towards the abutments of the orebody. Specific topics, including de-stress blast design, an evaluation of blasting efficiency, de-stressing effectiveness...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0105
... strength variation abutment fracture flow in porous media fracture intensity abutment particle equation Magnitude fracture deformation strata permeability ARMA 19 105 Predicting the height of longwall mining induced connective fracturing and permeability enhancement Adhikary, D.P., Poulsen...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1008
.... Artificial Intelligence metals & mining Upstream Oil & Gas reservoir geomechanics extensometer displacement instrument topcut 1 vertical extensometer Reservoir Characterization US government abutment crf sill backfill undercut span Displacement Measurement central undercut pillar...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1198
.... Upstream Oil & Gas Thompson Thickness metals & mining abutment knowledge management strength arched barricade backfill Symposium paste backfill MPa barricade loading nonuniform geometry monitoring rock mass consideration barricade design reduction stiffness ARMA 18 1198...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0654
.... The results can provide us an overall understanding of the progressive damage and failure evolution of large-scale underground openings in bedded rock masses. 1. INTRODUCTION Reservoir Characterization stability analysis layered rock mass real time system abutment monitoring Upstream Oil...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-164
... abutment weak structural planes when the project put into operation. In this paper, firstly, the weakening effect experimental research was carried out under the coupling interaction of stress field and seepage field. Through the test, the weakening rates of the strength parameters of the weak structural...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-146
... coefficient method test abutment similar material rock mech xiaowan project reservoir geomechanics strength strength reduction method global stability reservoir characterization structural plane mechanical parameter stability ARMA 15-146 Geo-mechanical Model Test for Global Stability of High...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7007
... Abstract In 70-75 years of past age stability of the arch dam was determinate by block stability in abutment under action of forces, transmitted from arch dam. The blocks were fixed in accordance with geological construction of abutment (the large fissures or systems fissuring). According...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-206
... through some in place and laboratory tests were performed to achieve the right decision. Thanks to and based on laboratory and in-situ rock mechanics experiments, resulting in this improved knowledge, it was to conclude that the left abutment of the dam, mainly due to existence of a weak zone which...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-315
... ABSTRACT Early during construction of Tekeze Dam, unfavorable geologic and topographic conditions were encountered on the left abutment, prompting an urgent program to evaluate foundation stability, expected behavior under all loading conditions, and to develop solutions for implementation...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-411
...-brown failure criterion mechanism Ignimbrite New Zealand rock mass strength rock material deformability rock mass defect abutment assessment Symposium shear strength ARMA 10-411 Rock engineering assessments for dam stability studies examples from New Zealand Read, S. A. L. GNS Science...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-266
... ABSTRACT: In double curvature concrete dams in which the pressure resulted from impounding is imposed to the abutments, choosing the dam site (from a rock mechanics point of view) and recognizing rock properties at the abutments are of paramount importance. One of the most important...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-050
... welded ‘hard zone’ immediately below the base of the cut-off wall (Figs. 3 & 5). Upstream Oil & Gas core analysis Piezometer gallery reservoir geomechanics Ongatiti Ignimbrite drillhole abutment Ignimbrite histogram fissure foundation Foundation Investigation investigation...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-049
... of the Fars Group in the stratigraphical classification of the Zagros Mountains. It mainly cons- ists of limestone, dolostone, sandstone, with lesser amounts of anhydrite and shale, and it outcrops in the foundation and abutments of the proposed Kangir dam. This formation is divided into three sections...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-385
... Program. The seismic stability is the focus of the current foundation analysis. In the past few years, Reclamation has improved mapping methods by employing close-range digital photogrammetry to map geologic structure and to obtain abutment topography. This paper discusses how photogrammetry combined...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-1046
...1. INTRODUCTION A relatively recent (~1970) focus of the United States Bureau of Reclamation (Reclamation) has been to identify and evaluate specific concrete arch and gravity dams in their inventory that may have key blocks present in the foundation or abutments. The presence of a key block could...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-1018
... shape of solution mining caverns. abutment borehole specimen Reservoir Characterization anomaly velocity tomogram Velocity Tomography volumetric characterization tomography resolution seismic wave receiver seismic velocity tomogram hydrophone Upstream Oil & Gas seismic velocity...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-935
... abutment convergence rock failure support pressure loading stage ABSTRACT: Longwall tailgates in coal mines are often subject to severe mining induced loading and deformation. Innovative tailgate supports have been developed over the years to provide safe and economical access and a ventilation...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-992
... foundation and abutments, ultimately leading to catastrophic failure of the dam itself. This case study was performed for Smith Mountain Dam near Roanoke, Virginia using Annandale?s Erodibility Index Method (EIM) and Bollaert?s Comprehensive Fracture Mechanics (CFM) and Dynamic Impulsion (DI) models...

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