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Keywords: mechanism
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-462
... _ Indra Jworchan, Geotechnique Pty Ltd, Lemko Place, Penrith, NSW 2750, Australia DEBRIS FLOW INITIATION MECHANISM IN RESIDUAL SOILS Indra Jworchan ABSTRACT Southern Thailand was subjected to an intense rainfall in November, 1988. This rainfall triggered thousands of slope failures in the Khao...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-545
..., have been highlighted elsewhere, (Waltham, 1992, 1993, 1996: Roodbaraky et al ., 1994). Previous studies have used plaster scale models and Finite Element models (FEM), in order to attempt to simulate failure mechanisms and ultimate failure loads. These have been validated by a single full-scale test...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-432
...NEW ROCK MECHANICS MODELS NEEDED FOR SLOPE STABILITY IN OPEN PIT COAL MINES John V Simmons1 ABSTRACT The science and art of rock mechanics applied to stability of Òsoft rockÓ slopes in open pit coal mines is not as well developed as for Òhard rockÓ metalliferous mines. The reasons for this are...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-594
... mechanisms are considered for the calculation schemes. The numerical results obtained are presented and compared to those given by other authors. INTRODUCTION Over the past twenty years, tunneling in cohesionless soils has been made possible due to recent technological advances including the pressurized...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-626
... the trend towards recovery of deeper coal seams (Shepherd et al, 1981; Beamish et al, 1998). However, despite of great efforts, surprisingly little progress has been made towards understand- ing outburst mechanism (Litwiniszyn, 1990; He and Zhou, 1991; Krzesinska, 1997; Wang et al, 1998). Pre- diction...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-604
... medium, leading to analytical solutions under simplified geometry, and has been applied to analyze the displacement behavior of a reinforced tunnel face under spherical symmetry (Wong et al., 2000). strength mechanism tunnel face macroscopic strength criterion homogeneous material criterion...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-582
... databases gathered by the authors in the Yiligarn Craton region of western Australia, and in the Sydney and Bowen coal basins of eastern Australia. The density of the data in these areas is now sufficient to allow regional trends to be defined and used here to examine potential mechanisms that control...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-006
... achieving an elegant solution. There needs to be a balance between the degree of over-conservatism and the uncertainties it is to cover. However, standard Factors of Safety will not ensure performance if the key factors are overlooked. Excessively mechanical use of Codes of Practice is liable to result in...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-026
... silty soils. Throughout these periods, research work investigating the performance of anchors in various soils and rocks and the associated load transfer mechanism, was carried out at numerous locations by a multiple of researchers. The vast majority of results supported the concept of the non linear...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-042
...MECHANISMS AND RATES OF SLOPE MOVEMENTS IN FINE GRAINED SOILS L. Picarelli ABSTBACT Mechanisms of slope movements are always the result of a complex stress-strain field induced by u factors depends on soil properties and initial conditions and is categorised by different landslide styles. The...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-033
..., therefore, first describes various ways in which fracture systems can be described. Specifically, geometric, mechanical and geometric - mechanical models are discussed with emphasis on the latter. When considering slope stability, as well as rock mass behavior in general, it is very important to capture the...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-143
...PHYSICAL SIMULATION OF FILTRATION MECHANISM IN GEOTEXTILES Xia Zhu1, G. P. Karunaratne 2, S. H. Chew 3, S. A. Tan 2, and K. H. Loke4 ABSTRACT This paper presents a physical model designed to simulate the pore structure of nonwoven geotextiles. The upper part of the model consists of a series of...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-043
.... The mechanisms of flows are not yet well understood, though it is very important for landslide hazard assessment. This paper presents well-documented and selected case records, which are informative for understanding of the mechanism of flows in granular soils. The shear strength mobilized after...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-119
... residence time within the barrier. drilling fluid property drilling fluid selection and formulation Upstream Oil & Gas New South Wales batch-equilibrium test drilling fluid chemistry drilling fluids and materials acidic groundwater mechanism groundwater surface area characteristic...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-030
..., meteorology, surface geology and climate of the mine site. ISSUE 1: FAILURE MECHANISMS AND SHEAR FAILURES OF TAILINGS DAMS UNDER EARTHQUAKE LOADINGS INTRODUCTION: SEISMIC LIQUEFACTION FAILURES OF TAILINGS DAMS Several tailings dams have failed as a consequence of earthquakes in different parts of the...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-198
... deterioration of sandstone is explored by a series of compressive strength experiments on both dry and wet specimens. To identify the mechanism causing the wetting deterioration, petrography, XRD and SEM examination were conducted to study the microstructure of sandstone. Experimental results indicate that 40...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-178
... mechanisms in Hong Kong. According to the model, a newly developed Mobility Index ( MI ) of major elements and constituent water may be adopted as quantitative weathering indices. Applications of many other existing quantitative chemical indices to the tuff in Hong Kong have also been carried out and only...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-373
... ABSTRACT: The increase in bearing capacity over time (i.e. set-up) of driven piles in non-cohesive soils is often substantial. However, the basic mechanisms behind the phenomenon are still not fully understood. In order to investigate the mechanisms related to set-up a comprehensive field test...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-410
.... The mechanism for the water film generation is clarified. Thus the significant effect of water film on land and submarine slides due to seismic liquefaction is demonstrated. INTRODUCTION In past earthquakes, landslides in alluvial sand deposits or lateral flow took place in coastal or river-side...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-370
... ABSTRACT: A nondestructive method, such as geophysical prospecting or electric prospecting, became a useful tool for investigating the characteristic of mechanical property in geotechnical engineering. An X-ray computed tomography(CT) method which is one of the nondestructive testing method...

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