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Keywords: Efficiency
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-148
... water supply pipe sys-tem for the water curtain boreholes. Furthermore, the authors developed the efficiency test method to evaluate each water curtain borehole individually and to ensure the air-tightness of storage caverns. The completed water curtain system had been verified its hydraulic containment...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-061
... as primary support. This improves the efficiencies of the mining cycle which is a benefit to fully mechanised shallow bord and pillar operations in the Bushveld Igneous Complex. 1 INTRODUCTION An increase in shallow hard rock mines on the Eastern Bushveld Limb has increased the demand for active support...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-196
... new jobs initiating new jobs High efficiency Average efficiency Low cost of labor High cost of labor High investment cost Low investment cost Summary Cost-effective for tunnels of Average cost-effective for more than 3 km tunnels of up to 3 km or more Potential advances: Potential advances: automation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-146
... zone increases significantly efficiency of stimulation of a well. It is carried out by directed unloading of the reservoir on the basis of knowledge of the deformation, strength and filtration properties of specific field rocks. Examination of rock mechanical properties is made by laboratory tests...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-118
... Abstract Dynamic tests using the Split Hopkinson Pressure Bar test (SHPB) were conducted on granite specimens in order to study the efficiency of the drill and blast method and the environmental impact of the excavation of a tunnel in urban areas. The tests were performed at different strain...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-021
... creates paradoxical effect providing the formation of new faults in intact rock mass at shear stress levels significantly below the frictional strength. This indicates that the lower limit of lithospheric strength is not restricted by the frictional strength. The varying efficiency of this mechanism...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-044
..., the effects of the rock brittleness on the efficiency of diamond beads are examined by investigating cutting rate and unit wear values. Until now, the effect of the rock brittleness on diamond wire cutting has not been put forward by any researchers. Therefore, it is aimed to correlate the relationships...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-106
... tunneling in hard rock were overcome. ground transportation hard rock Efficiency replacement structural geology cutter segment dislocation rail transportation long-distance shield water leakage cutting tool Reservoir Characterization key technology segment damage tunnel shield machine...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-118
... parallel element-by-element scheme vector algorithm finite element analysis Engineering processor Parallel Computation matrix Artificial Intelligence Efficiency computing ebe method parallel computer node Computation computer domain decomposition mechanics Eurock 2005 -Impact...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-002
... intends to present how modelling can be used for the analysis of the functioning and the performances of both systems and in order to help engineering in the design of efficient devices. 1. NET FENCES - THE ASM NETS: A COMPLEX STRUCTURE 1.1 Introduction Rock fall restraining nets are specific structures...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-052
... Reservoir Characterization optimum penetration depth conical bit loading Engineering boundary condition impact pressure Completion Installation and Operations Efficiency pressure wave fracture version 4 shear stress dynamic bit impact Upstream Oil & Gas stress wave profile...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-092
... Artificial Intelligence strength rock fragmentation fuzzy logic rock destruction Efficiency Upstream Oil & Gas heterogeneity rock strength damage evolution fuzzy set constituent Drilling mechanics fuzzy damage parameter damage parameter membership function destruction...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 93, June 21–24, 1993
Paper Number: ISRM-EUROCK-1993-079
... ABSTRACT: Verification of the efficiency of operational and technical measures in a problem field of rockbursts, hydrogeology, engineering geology, and supports in long mine workings and impacts on surface and underground structures is performed on equivalent models in the laboratory...

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