1-13 of 13
Keywords: rock fragment
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-512
... under five different impact velocities are carried out. The fracture surface area of rock fragments and surface energy of the two kinds of rock have been studied based on the fractal principle and fracture mechanics theory. Furthermore, the fragment-size distribution of broken rock is obtained...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-009
.... In-situ fragmentation is the original condition of rock fragmentation before the undercut is blasted. Loading conditions imposed on the rock mass by the caving process leads to primary fragmentation, as a combination of failure along existing discontinuities and fracturing of the intact rock. Secondary...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-366
... developed by Li et al. [12], Wang and Dusseault [13] and others. Although more complex material behavior was modeled in the later models, all of the aforementioned models were two-dimensional. rock mechanics geomechanics symposium mpa block contact upstream oil & gas rock fragment reservoir...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7442
... type propagation indirect tensile strength 0 chalk AE amplitude rock sample rock fragment indirect tensile strength 1 evolution reservoir rock AE event MPa creep fracture 1. INTRODUCTION How one can fracture reservoir rocks efficiently without damaging the well or environment...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-153
... piles. The angularity of particles, interlocking of grains, low percentage of fine-grained material and high to extremely high durability index of rock fragments in the rock piles are the major reasons for the observed high friction angles. 1. INTRODUCTION Rock piles, the preferred term by many...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-259
... Reservoir Characterization geologic modeling rock fragment geological modeling bimtest correlation specimen fragment friction angle variability Symposium exponential model bimrock Upstream Oil & Gas geostatistical index investigation matrix anisotropy strength parameter...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-501
... the dominating mechanism if load is increased further. In most cave mines, the caved rock is subject to sufficiently high stresses for splitting to occur. Reservoir Characterization hydraulic fracturing Artificial Intelligence Williams strength Rockfill reservoir geomechanics rock fragment Alonso...
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-10-357
... pressured, under consolidated seal above the perforations begins to move downward, and finally (e) the tubing fills up with shale and rock fragments and (f) the production is lost. Equipped with this analysis, we have recommended the following remedial completion: (1) squeezing cement in cavernous cavities...
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-01-0375
... successive loading cycles is the key parameter in estimating the energy requirements. Conceptually, a rock fragment with higher SER will require less energy for a subse- quent loading cycle and higher strain energy can be retained in the rock fragment if the lag time between the subsequent loading cycles...
Proceedings Papers

Paper presented at the The 33rd U.S. Symposium on Rock Mechanics (USRMS), June 3–5, 1992
Paper Number: ARMA-92-0285
... analyses were performed with the elastic modulus of the rock reduced by some factor to reflect blast induced damage. Reservoir Characterization Effectiveness runnel damage zone rock fragment rock bolt New Mexico emulsion mechanical rock bolt three-dimensional elastic wave propagation code...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-745
... surroundings. As to a more distant overburden and bedrock we often do not know what kinds of rock they consist of, neither do we know their properties. Another reason is the fact that only the strengths of rock fragments are well known- from them and from the data about the fissuring of the rock mass...
Proceedings Papers

Paper presented at the The 24th U.S. Symposium on Rock Mechanics (USRMS), June 20–23, 1983
Paper Number: ARMA-83-0743
... of the rock excavated and the size distributions of these rock fragments are the same for both dry and water jet assisted cuts. Thus this hypothesis is rejected. It is noted that only about 8 percent of the energy applied by the bit, or by both the bit and the water jets, is used usefully in creating new rock...
Proceedings Papers

Paper presented at the 20th U.S. Symposium on Rock Mechanics (USRMS), June 4–6, 1979
Paper Number: ARMA-79-0651
... masses before the spalling activity became embarrasing. In the meantime, the equipment for shotcreting was prepared for operation. 5 cm thick layer of shotcrete was considered to give a satisfactory protection against rock fall. tunnel surface new round shotcrete conclusion rock fragment...

Product(s) added to cart

Close Modal