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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-015
... form is defined as the number of fractures per meter, a one-dimensional measure, which is historically referred to as Fracture Frequency, or P10 under the Pij system, and has the dimensions of: 114 M.C. Tonkins and J.S. Coggan / Procedia Engineering 191 ( 2017 ) 112 118 (1) This measure...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-028
... of micro-sized specimens made of plagioclase, alkali feldspar, and quartz within Iksan granite (Korea) is evaluated at room temperature, using the testing machine. A micro-sized specimen of a cantilever beam type has dimensions of 10 × 10 × 50 μm. The specimen is made by Focused Ion Beam (FIB) machining...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-110
... Reservoir Characterization France dimension empirical approach metals & mining compression strength resistance stability coefficient pillar Upstream Oil & Gas strength slenderness geometry application safety factor evolution Standard Deviation uniaxial compression strength...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-118
... correlation Reservoir Characterization reservoir geomechanics rock pillar strength Rock mechanics Upstream Oil & Gas uniaxial compressive strength dimension specimen discontinuity compressive strength rock mass equation Ayre da Silva pillar shape effect São Paulo Rock Mechanics...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-131
... chart (in two dimensions). 1 INTRODUCTION The mines of S'Argentera (from the Catalonian "La Platera") are a complex of underground argentiferous lead mines that have lain abandoned since 1909. They are located in the proximities of the small picturesque village of San Carles on the Island of Ibiza...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-173
... ABSTRACT: The fractures geometrical characteristics can be calculated by various sampling methods in 1 dimension (1D) & 2 dimensions (2D). The Discrete Fracture Network (DFN) simulation results show some of the equations are suitable for calculation of mean trace length and the difference...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-174
... characteristics are calculated for each joint set. reservoir geomechanics Upstream Oil & Gas dimension knowledge management Wellbore Design orientation Rock mechanics wellbore integrity Engineering study area Reservoir Characterization structural geology cavern Storage Power Plant...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-114
... prepared. 4 GENERAL METHODOLOGY CONCLUSIONS A very good relation between results obtained by three dimensional analysis with two dimension ones have been achieved. So we can confirm that the combination of FEM 2D and BEM 3D is a right way to prepare preliminary design of underground excavations...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-027
... to huge consumption of fuel. microwave energy disc cutter microwave macro-crack density Reservoir Characterization aperture dimension Microwave Radiation rock mass Upstream Oil & Gas temperature distribution horn antenna breakage application tunnel boring machine structural...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-002
... allows one to detect traces whose surface dimensions are larger than the resolution. 5 ROCK MASS DEGREE OF FRACTURING Different approaches have been developed by several authors to quantify the rock mass degree of fractur- ing. In the following we describe the two more widely applied in practice: the Jv...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-107
... Model setup The two-dimensional numerical environment repre- sents a rock mass vertical section of 30 m × 30 m size, centered at the DFN s center. The parallel bond model was used to represent the intact rock material. 661 Figure 1. Scheme representing the two-dimensional speci- men dimensions, undercut...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-111
... with the dimensional conditions envisaged by the ModelTheory. Such conditions refer to the dimension- less, or numbers, which must have the same value when averaged over properties, known or accepted, both of the prototype and of the reduced model, in order to satisfy the conditions of similarity between the two...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-014
... using the compass or non-contact techniques. From these it is possible to obtain evaluations on the degree of fracturing of a rock mass and on the dimensions of the blocks that can be formed. Such evaluations can be made in either a deterministic or statistical manner, whenever the collected data sample...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-086
... & Gas Rock mechanics specimen Bieniawski square section Ayre da Silva compressive strength São Paulo rock mass escola politécnica reservoir geomechanics dimension diameter shape effect pillar Rock Mechanics for Resources, Energy and Environment Kwas´niewski & ydz ba (eds) © 2013...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-092
... which results in a significant increase of the effective permeability in this zone. reservoir geomechanics strength waste management Upstream Oil & Gas threshold ti radioactive waste repository Reservoir Characterization repository chamber dimension extension Diederich radioactive...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-060
... as well as working principles about these methods. He classified the methods as sub-horizontal jet grouting #1 , injected steel pipe umbrella method #2 and pipe roof method #3 . He cited the applicable steel pipe dimensions as seen in Table 1. He concluded that ground type was distinctive factor...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-141
... Numerical delineation of the excavation damage zones: From rock properties to statistical distribution of the dimensions M. Perras C. Langford, E. Ghazvinian & M. Diederichs Queen s University, Canada Abstract: During the construction process, of an underground excavation, the rockmass is damaged...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-112
... construction in urban areas. In some stretches of Istanbul Metro, the geometry of underground structures poses rather complicated. Thus, three-dimensional numerical simulations of intersections were of paramount importance in order to properly evaluate the real behaviour of the lining. The simulations were...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-016
... of the boundary of the rock mass. Others wi II be considered a part of the rock fabric. Many methods have been developed to deal with this transfer, allowing treating the rock mass as a continuum which contains fractures and border faults. The dimensions of an elementary volume of a jointed rock are related...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-062
... represents the fractures as two-dimensional objects (circular discs, polygons, etc.) placed in the 3D space. The transversal dimen- sion of the fractures is at least hundred times smaller than the other two dimensions, so the representation as 2D objects causes no significant loss of accuracy of the model...

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