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Keywords: calculation
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-341
... cement formulation casing and cementing cement property cement chemistry Artificial Intelligence machine learning construction materials regression model calculation specimen reference mixture table compressive strength fibrous ettringite hydrate Portland cement ettringite hydrate...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-303
... hypotheses, the resolution process remains sufficiently simple, thus preserving the analytical character of the solution. This new analytical model has been validated by both approaches : 3D numerical calculations using the finite difference code FLAC-3D, and by comparing its predictions to in situ data from...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-351
... ground and with calculated settlement values. These results are also compared with published data from full-scale load tests and theoretical procedures. Overall, the results from the full-scale tests show more improvement than predicted by theoretical procedures, although a large scatter was observed...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-298
... r. 1 D r. Marc Raith el, G eotech nique Co ns ultants Kem pfert +P artner, Man nh eim , G er man y 2 P ro f. Han s- Geo rg Kempf ert, Ins titute o f G eo techniqu e, University of Kassel, Germany CALCULATION METHODS Nume ric al ca lculat io n using FEM Fo r the nu me ric al ca lcu lat io n t he pr...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-289
... lateral force of magnitude (F h) acts on top of the soil surface, the reinforcement forces in various layers are calculated in the following empirical manner, Figure 1. Th e fo rc e with in an y r ei nfo rce me nt lay er is ca lc ula ted a s If h is gr ea ter th an th e h ei ght of t he wa ll (H), h in...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-464
... calculated from the volume of material removed over the past 3 million years, based on the geomorphological history of the site. Historical data included a rockfall in 1990, which caused the death of two high school students, and another rock topple observed in 1992. A reasonable agreement is found between...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-465
... this effect may be decisive in triggering landslides. Extensive field measurements have been performed in unstable clay slopes. In this paper recent results will be presented of these measurements in progress as well as results of back calculations. INSTRUMENTATION OF SLOPES AT LÜHNDE For a...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-355
... nailing, Gudehus (1990). roughness grain diameter borehole wall stabilisation Upstream Oil & Gas Soil Nail pullout test recommendation pullout force Wehr calculation diameter sand anchor granular material mean grain diameter cylinder application installation gravel...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-456
... is primarily dependent on the permeability of the soil, the compressibility of the pore water, i.e. the air (or gas) content in the fluid, and the velocity of the pressure change. The phenomenon is explained, and a simple approach to take into account this effect in stability calculations is proposed...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-446
... averaged value of the factor of safety obtained for different values of the angle of dilatancy using the proposed method is suggested and calculated. The variation of the factor of safety with angle of dilatancy for a range of the strength parameters is obtained and compared with those using the...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-436
... ALTERNATIVE APPROACHES OF ROCK SLOPE STABILITY ANALYSIS Bjørn Nilsen1 ABSTRACT The calculation principles and interpretation of results are discussed for three alternative methods for rock slope stability analysis: 1) The traditional deterministic principle, 2) The partial factor principle, and 3...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-511
... design method could be used in conjunction with the observational method using field measurements during construction of embankments. Design calculations were made by using the program FLAC, which is an explicit finite difference method, that may analyse plastic flow, even if peak strength is reached and...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-487
... ABSTRACT: A geomechanical analysis of a shallow small scale landslide in the harbour of Saba was carried out to calculate the risk of new landslides and in order to advise local authorities on practical measures to improve safety. Geotechnical investigations and geological mapping were carried...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-632
... approach to the estimation of the deformation modulus of rock masses that contain any number of single joints or joint sets. The data needed for calculation are the elastic parameters of the intact rock, the orientations of the joints and the stiffness of the joints. The deformation modulus of the rock...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-547
... transportation diaphragm wall eemclay excavation rail transportation calculation prediction underground station construction deformation installation deep underground station geotechnical parameter investigation building pit stiffness Amsterdam soil condition settlement prediction fe model...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-634
... they should not be required to study huge user-manuals, to be able to walk through the virtual tunnel The tunnel can be displayed with photorealistic textures. photorealistic texture information plane Upstream Oil & Gas calculation numerical simulation human computer interaction...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-262
... doing this is to compare the total annual costs of the system with the damage cost that is expected in the absence of EWS. Here the most difficult part of such calculation is to determine a price for each life. In order to solve this problem the amount paid by insurance companies in the case of traffic...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-214
... available construction materials within the immediate vicinity of the project . In order to ascertain the adequacies of the stability of cross sections formed by the selected construction materials, a computer programme in conjunction with hand calculations was employed using the Bishop's method of slope...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-234
... displacement of liquefied ground. Shaking table tests revealed the mitigative effects of a wall. Study was then extended to develop an analytical method which can assess the displacement reduced by a wall. Example calculation on a recent event during the 1995 Kobe earthquake matches with the observation...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-605
... elastoplasticity calculations. Nonetheless, the resulting model remains sufficiently simple and an analytical solution is still accessible. Comparisons with 3D numerical calculations show that the model gives precise results if the correct convergence at the moment of bolt installation Up is used as an "external...

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