1-20 of 81
Keywords: strata
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 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0105
... ABSTRACT: Longwall mining causes the strata overlying the coal seam to fracture, break and collapse into the void space resulting from the coals extraction. Estimating the height of longwall mining induced strata fracturing, fracture connectivity and the height of complete groundwater...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0237
... wellbore coal bed methane Directional Drilling pore pressure wellbore orientation t-shaped well coalbed methane drilling operation horizontal section well track optimization strata coalbed gas exploitation exploration 1. INTRODUCTION In recent years, coalbed gas has always been the focus of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1604
... ABSTRACT: Longwall mining causes the strata overlying the coal seam to fracture, break and collapse into the void space resulting from the coal extraction. Reliable prediction of rock mass deformation, aquifer interference, mine water inflow is not only essential for improving mine safety and...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-735
... ABSTRACT: Excavations associated with the production of stratified resources by longwall mining are of interest to the study oí” mining-induced seismicity. By establishing the possibility of vertical displacement of overlaying strata into the void space opened by underground excavation...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-062
... ABSTRACT: Longwall mining causes the strata overlying the coal seam to fracture, break and collapse into the void space resulting from the coals extraction. During this dynamic process that initiates at the roof and extends upwards, the fracturing and rotation of roof rock blocks will...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1210
... ABSTRACT: Carbonate strata are unique in that sediments can become lithified soon after deposition and prior to burial or loading (e.g., by marine or meteoric cementation). The rocks that develop have appreciable strength and cohesion that enable brittle failure under the influence of gravity...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0739
... Upstream Oil & Gas gravitational potential energy roof strata expression Reservoir Characterization Thickness normal stress span average deflection free body diagram deflection metals & mining cantilevered case strain energy fracture beam deflection strata built-in beam...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-521
... Abstract: The physical, structural, and depositional features of the immediate above seam strata which characterize San Juan Mine are localized in extent; regional scale features having little direct influence. Four primary drivers of ground control difficulties associated with the immediate...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-240
... mining, such as the "voussoir beam" theory for analyzing the roof breaking law and shield support capacity, the "key strata" theory for controlling the surface subsidence, the dynamic load theory for determining supports capacity in large-cutting-height mining and top-coal caving mining and the coal wall...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-333
..., installed machinery and workmen. These structures experienced many incidents of strata instabilities during construction period including large roof falls and even during its operation in the form of large number of rockbolt violent failures etc. Since the conventional instrumentation that was installed...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-534
... efficiently extending overlying strata up to ground surface, to a regularly refined focus capable of stepwise capturing CO 2 plume, surrounding by circumference divided into cells gradually scaling up along radiant directions. The resultant distributions of ground surface deformation simulated using...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-848
... gradual depletion of nearby coal reserves, some underground coal mines have to maintain long-term entries (belt, track, return airway, etc.) for a great distance in order to access remote coal reserve area. However, due to high humidity, warm temperature, and aging effect in the belt entry, roof strata...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-849
..., and so on, were utilized to mitigate potential rockburst conditions. In addition, local stress control methods, such as stress relief via deep borehole drilling, roof strata weakening via pre-mining fracturing or blasting, coal seam stress relief via controlled bursting, coal seam softening via water...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-850
... Abstract Strata behaviors in some extra thick coal seams with fully-mechanized mining are fierce. In some circumstances, some hydraulic supports were still crushed even though their working resistance had been sharply increased beforehand comparing normal supports in medium-thick coal seams...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-198
... coalface. With the progress of mining, it eventually fails and caves in as main fall. As the size of the worked out area i.e. the goaf increases, it gets filled up with fragmented rock material that provides resistance to the lowering of the relatively intact strata. The amount of resistance offered by...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7074
... metals & mining intersection stability reservoir geomechanics strength US government roof rock Reservoir Characterization Upstream Oil & Gas stress scenario deflection safety factor strata horizontal stress stability horizontal stress scenario major horizontal stress...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7413
... metals & mining Upstream Oil & Gas roof deformation roof fall geometry strata configuration Scenario deformation mechanics 1 ARMA 14-7413 PARTICLE FLOW MODELING OF ROOF DEFORMATION FOR A ROOM-AND-PILLAR COAL MINE A. Russell, E. Gilliland and E. Westman Department of Mining and...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-477
... abandoned mine has been identified. Upstream Oil & Gas Reservoir Characterization residence subsidence event ground surface pillar mining operation recovery ratio investigation grout hole metals & mining void curvature relative elevation knowledge management basement strata...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-611
... strata steam release reduction stress regime Alberta sinkhole caprock seal succession Energy Resource Conservation Board dissolution Abstract: Although the majority of in situ oil sands schemes in Alberta do not encounter significant reservoir containment problems, there have been...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-471
... reservoir geomechanics metals & mining coalfield upsidence subsidence subsidence effect horizontal stress closure Valley Closure Subsidence Effect the valley Upstream Oil & Gas colliery proceedings geotechnical mechanism strata Reservoir Characterization New South Wales...

Product(s) added to cart

Close Modal