... ABSTRACT: Lithological units have been classified geotechnically with mechanical tests and discontinuity measurements in the Rotowaro coal mine open pits, New Zealand. Using these measurements slope stability probability classifications (SSPC) have been quantified based on an adaption...

... ABSTRACT: The stability and potential building hazard arising from cavities cut into weak Triassic sandstone are a special feature of the urban environment in the city of Nottingham, UK. Numerical modelling analyses using FLAC (Itasca, 1995), have been applied to determine the behaviour...

...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...

... area is carried out after the drivage and pushing processes are finished. The purpose of the mortar injection is to maintain a permanent stability of the surrounding soil and the over-cutting area. The injection amount of the mortar is obtained as the value, which multiply 40 % of the cross section...

... ABSTRACT: Stability of tunnel faces in sandy ground is influenced not only by the mechanical properties of the ground but also by the groundwater conditions. Sand tank experiments prove that the morphological features of face collapse are influenced by the properties of ground...

... the oldest form of horizontal drainage. In Hong Kong the techniques have been developed for draining rock slopes to improve slope stability and many of the drilling and maintenance problems addressed (Martin et al, 1994). Horizontal controlled drilling techniques have been used in recent years to install...

... ground transportation slip plane Observation Platform solid waste management precipitation railway line temporary movement rail transportation displacement velocity displacement magmatic rock slope show displacement horizontal displacement reach stability Upstream Oil & Gas...

... is illustrated in Figure 1. metals & mining strength reservoir geomechanics span stability Reservoir Characterization Upstream Oil & Gas knowledge management data mining coal roof fall highwall mining operation panel collapse stability seam Duncan Fama pillar continuous miner...

...) method and umbrella arch method can be applied for the stability of tunnel excavation and in addition the reinforcement of concrete lining is required for long-term stability of tunnel. INTRODUCTION The tunnel is constructed to fulfil Korea's transportation requirement as a subway tunnel. The NATM...

...STABILITY OF TUNNELS IN CLAY WITH OVERLYING LAYERS OF COARSE GRAINED SOIL Richard J. Grant1 and R. Neil Taylor2 ABSTRACT The stability of tunnels constructed in clay with overlying layers of coarse grained soil is examined using data from centrifuge model tests. Results show that the stability...

... ABSTRACT: The paper presents the results of physical (geomechanical) model investigation of fractured rock behavior for validating the overall stability of openings excavated in the rock massif for a power house of a hydropower plant. Three types of tests were performed by geomechanical...

... ABSTRACT: The recent advances in ground anchor technology and the related techniques of cable bolting and rock bolting are reviewed. Collectively the technology associated with the three techniques enable design engineers to address stability problems over a range of scales and in a range...

... cooperation between the geological and geotechnical departments of the mine, a small amount of additional effort will produce a sound geotechnical model. geological modeling Artificial Intelligence stability analysis geologic modeling reservoir geomechanics strength programme Reservoir...

...CASE STUDIES OF FILL STABILITY IN LAND RECLAMATION Laifa Cao1, Cee Ing Teh1, Ming-Fang Chang1, Victor Choa1, Yung Mook Na2 and Bo Myint Win3 ABSTRACT Two case studies of embankment failure at a reclaimed site in Singapore were carried out. Both the limit equilibrium slip surface method...

... been used to ensure the stability of the foundations and abutments, and to reduce seepage to acceptable levels. INTRODUCTION Background "No structure grips the ground so closely as a dam. It holds on at its base and at its flanks… In other words, a dam is made up of two parts: the artificial dam...

... symposium ground response shield underground construction investigation stability structural geology Engineering ground movement excavation settlement international conference construction soft ground tunnel application geotechnical aspect mair UNDERGROUND WORKS IN SOILS AND SOFT ROCK...

..., in order to warn of the seismic risk. method background noise Earthquake stability noise frequency modification site effect determination Reservoir Characterization good stability spectral report microzonage seismic risk amplification utilisation background noise seismic tremor...

... rock mass conditions. Since the early 1990's, BHP Iron Ore has established a series of comprehensive, integrated stability and risk assessment and management approaches for pit wall design, formation and monitoring. Their purpose is to develop economic and safe pit wall designs and to preserve...

... ABSTRACT: The three-dimensional elasto-plastic shear strength reduction FEM is used to evaluate the stability of slopes reinforced with piles or anchors in a general elasto-plastic FEM frame, where the soil-reinforcement interaction is simulated with zero-thickness elasto-plastic interface...

... ABSTRACT: Soil nailing is an earth retaining technique used to stabilise existing slopes and support excavations. The stability post construction can change due to variation in groundwater, resulting in a reduction of effective stress in the soil. Nine centrifuge model experiments were...