... to develop the Ground Engineering Model requires several steps (Fig. 2). The Site De- scriptive Model is the geological description result- ing from both surface and borehole investigations. The essential component of the SDM is to commu- nicate the impact of the geological history on the rock mass...

... ABSTRACT ABSTRACT: The ability of laser scanners to rapidly provide structural data in high inaccessible rock slopes has been frequently and correctly documented as an important advantage of the technique. Researchers have also shown the potential for characterizing varied rock mass...

... ABSTRACT ABSTRACT: Although tensile strength can often be neglected for weak or highly jointed rock masses, the strength of rock bridges in moderately fractured and blocky hard rock masses contributes significantly to their self-supporting capacity and should be considered in engineering...

... Upstream Oil & Gas mechanism hammah discontinuity Strength Reduction total displacement fe-ssr method displacement contour rock mass blocky rock slope blocky rock mass fe-ssr analysis slope problem failure mechanism slope stability analysis element shear strength reduction...

... of small rock fall activity and creep in the rock mass prior to large slope failure can be detected, measured and monitored. Combined with models of the temporal nature of slope failure evolution, for example first time failure due to brittle crack nucleation and coalescence, these data have the potential...

... ABSTRACT ABSTRACT: This paper introduces a new in-situ technique for characterizing rock mass mechanical strength and the associated spatial distribution in the ground. The technique involves automatic drilling process monitoring (DPM). Case examples are given to show the original DPM data...

...1 INTRODUCTION Prediction of fluid flow through rock masses is sig- nificant in mining and civil projects, oil and under- ground water extraction, and when considering cer- tain geothermal and environmental issues. The inflow into an excavation could affect the stability of the excavation and from...

... through 5 are typical sections that sche- matically show examples of downslope topography and dominant structural discontinuities (major joint sets and occasional faults) present within the rock mass below specific structures that were founded on rock. Figure 5. Typical rock pull-out cone geometry...

...1 INTRODUCTION Deformation modulus of a rock mass is a vital ele- ment for analyzing the rock mass behavior in rock engineering applications. There are many parameters that affect the deformability modulus of a rock mass notably the geological conditions of a site and the development of local...

... real time system Upstream Oil & Gas variation Reservoir Characterization damage development specimen triaxial compression rock mass reservoir geomechanics strength initiation brittle material compression flaw pressurized water hydraulic fracturing fracture process hydraulic...

...1 INTRODUCTION Rock mass in coalmining environment essentially occurs in stratified forms. The behavior of such a stratified rock mass can, in principle, be defined based on discontinuum modeling principles and the problem can be solved using numerical methods such as finite element methods...

... to optimize exploitation methods, is necessary. Finally, effective drilling result in effective blasting, the desired fragmentation and the effective control of operating costs. Drilling, like the other exploitation stages, has a direct and close relation to the rock mass; this would be affected...

... a sufficiently large size (dL) is reached. At the rock mass (field) scale, new geologi- cal discontinuities (such as fractures and joints) are introduced, and these often constitute the controlling factors for the failure strength. A larger volume also tends to lead asymptotically to a minimum value of the rock...

...1 INTRODUCTION Knowledge of the rock mass strength and deforma- tion behavior is required for the design of many en- gineering structures in or on rock, such as founda- tions, slopes, tunnels, underground caverns, drifts, and mining stopes. A better understanding of the rock mass strength behavior...

... ABSTRACT ABSTRACT: This paper investigates the conditions favourable to the development of a kink zone instability in jointed rock masses in relation with: 1) the rate of deformation and 2) the boundary conditions. Numerical simulations using the distinct element code UDEC have shown...

... Upstream Oil & Gas mass behavior synthetic rock mass discrete fracture network synthetic rock mass model strength cohesion increment fracture lift 2 reservoir geomechanics particle rock mass strength brittleness fragmentation Reservoir Characterization Simulation SRM sample...

... on frac- ture mechanics could be used to simulate slope fail- ure in massive brittle rocks. However most rock masses in nature have discontinuities and for those situations a discontinuum approach that can readily accommodate discrete fractures as well as provide for the growth of new fractures...

... ABSTRACT ABSTRACT: A fracture mechanics numerical code, FRACOD, has previously been developed to predict the explicit fracturing process such as fracture initiation and fracture propagation in rock masses. It has been used in studying borehole breakouts, tunnel stability, and rock mass...

... important in the determination of poten- tial water flow paths in the rock mass underlying a potential dam structure, and this has an important impact on the planning of grouting procedures (Houlsby 1990, Andrade 1988). Several different methods for assessing permea- bility variations in rock masses can...

... systems to estimate the stable angle of a required or existing slope. Many rock mass classification systems have been developed over 100 years since first attempt were made to formalize an empirical approach to tunnel design. Some of classification systems like RMR (Bieniawski 1973) and Q (Barton...