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Keywords: orientation
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-484
... considered (a) the orientation of the block is parallel to the slope, (b) the orientation of blocks is parallel to the surface. The following set of geometrical and material data is considered Block characteristics : length: a = 1m, width: b = 0.5m joint stiffness: cN = cQ = 1 GPa friction angle: = 20...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-455
...GENERATING DISCONTINUITY ORIENTATION DATA FOR USE IN PROBABILISTIC MODELS FOR MODELLING EXCAVATIONS IN ROCK. Anthony (Tony) G. Meyers1 and Stephen D. Priest2 ABSTRACT Proprietary probabilistic software generally requires discontinuity orientation to be defined according to two distributions, one...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-425
... explosive behaviour. From the view point of lithology it is a rock type of rhyolite with secondary feldspar. The rhyolite was the subject to extensive denudation in the Pannonian period. orientation disintegration stability ground transportation stability analysis plane fussgänger estimation...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-460
... processing procedure. The coordinates of joint profile were converted geometrically to evaluate the orientation and the JRC value for a certain joint or joint set. A total of 124 discontinuities including 61 natural joints were detected in the image and one major joint set and another minor one were...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-449
... within the limestone are of variable composition, size and bedding and contact orientation. Some of the thrust blocks are in excess of 100 m thick and 200 m in plan dimensions. A weathered zone up to 50 m thick, ranging from slightly to extremely weathered Proterozoic units and in some places clay is...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-518
... (1980), includes defect orientation and weathering in the basic rock mass rating. classification rock mass failure slope height Selby Reservoir Characterization Rock mass Rating Romana adjustment factor reservoir geomechanics orientation mass rating adjustment slope angle Upstream...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-534
.... The spatial-temporal self-organizing properties are established in the structure of stress fields around the mining entries of certain orientation in relation to the mining works and tectonic faults. The established behavior peculiarities of the rock massif can be used for prediction of rock dynamic...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-432
... rational slope stability assessment under such conditions. This paper is based on several years of practice and observation. It sets out guiding concepts for stability assessment, including defect orientation mapping, continuity and persistence observations, mechanism definition, and analytical tools...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-422
... surface condition continuity, spacing and orientation need to be observed when investigating sites in the area, or in similar geological terrains to allow consideration of the likely influence on overall soil mass strength. INTRODUCTION North eastern New South Wales is a region of rapid growth. The...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-521
... Shindong group, which is oriented in NNE trend and has a thickness of 2 to 3km, is divided into the Nakdong formation, Hasandong formation, and Chinju formation in ascending order. The study area belongs to the Nakdong formation which is the lowest formation of the Shindong group in Kyounsang supergroup as...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-566
... (Chainage RU 24420-24430). Along the Manglad and Rattanpur sections, the headrace tunnel was severely affected by stabillity prob- lems, associated with the orientation of the schistosity (Figure 2). In addition to Daj Khad , deformations have been recorded in areas with high rock cover. Examples of the...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-532
... that structural geology should be linked closely with standard rock mass assessment. Artificial Intelligence fuzzy logic expert system Reservoir Characterization orientation discontinuity geological approach information investigation interpretation tunnel prediction geometry fabric...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-597
... predicting the failure specifications of granular soil on the basis of sliding mechanisms and elastic behavior of particles has been introduced. This model is able to present numerical distribution of plastic strain through even highly anisotropic medium. Active orientations regarding the plastic shear...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-582
... stress is discussed, as well as the nature of any common features between the regions. Reservoir Characterization orientation Sydney Basin structural geology mechanism Yilgarn Craton Upstream Oil & Gas prediction Craton stress field orientation Bowen Basin horizontal secondary...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-033
... orientation distributions in each set. Two major problems results from these conditions: The geometry of the fracture system needs to be described (modeled) The way in which fractures interact to result in instabilities needs to be known and appropriate models developed. Figure 2. Interacting Wedges and...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-023
... geomechanics maximum principal stress compressive strength metals & mining orientation strain measurement Static and Dynamic Considerations in Rock Engineering, Brummer (ed.) © 1990 Balkema, Rotterdam. ISBN 90 6191 1532 In situ stress determinations in mines located in two major structural domains...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-034
... shear zone. Reservoir Characterization orientation peak probability stability support element Engineering diameter consideration probabilistic evaluation metals & mining joint plane Norite raisebore hole reserves evaluation sub-vertical joint ore pass stability strike angle...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-013
... inclination or orientation. Joint orientations vary considerably as do the strength parameters of joints. In any analysis it is important to take these variations into consideration. Probability methods were employed to account for variability. Probability methods can also be used to quantify the effect of...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-183
... exponentially decreases moving away from the de- signed contour of the chamber. 24 Fig.1 The change of the intensity of the' crushing process of ore massifs 3 THE ELECTROMETRIC METHOD OF THE DETERMINATION OF THE ORIENTATION OF THE QUASI-PRINCIPAL STRESSES Tne known methods of the solution of this problem are...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-179
... of the deepest boreholes in the world and will offer a unique opportunity to study stress orientations at depth. In the KTB pilot hole (4,000 m in depth) information has been obtained from stress- induced wellbore breakout analysis utilizing thirteen four-arm caliper logs and five digitized borehole...

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