... to be used for different purposes. Artificial Intelligence Reservoir Characterization spatial reasoning Upstream Oil & Gas metals & mining accuracy instability Spatial analysis photogrammetry slope instability application procedia engineering 191 point cloud information geometry...

... Abstract Ischia Island (Italy) experienced slope instabilities during the Holocene that occurred at different scales, from shallow mass movements up to large rock and debris avalanches. These events were strictly related to volcano-tectonic activity and the presence of a well-developed...

... classifications for a long time. All of the classifications are including several geometric parameters in several degrees. Intersection lines between discontinuity surfaces and points of them on the visible surfaces of any engineering structure that excavated rock mass may also be indicators of any instability...

... and prevent future instabilities. This paper presents the investigations and interpretations of the structural geology, the impact on the stope stability, pillar behaviour and support. 1 INTRODUCTION Rowland Shaft is one of Lonmin's first generation vertical shafts, extracting both the Merensky and Upper...

... ABSTRACT: Various studies indicate that most of the slope instabilities affecting heterogeneous rock masses are related to differential weathering and erosion of the lithologies that outcrop in the slope. However, not all these rocks behave similarly, exhibiting considerable differences...

.... Empirical methods enabled straightforward determination of the need to include an intermediate pillar. A 3D boundary element model indicated that stress concentration in the roof was the main driver for instability. The 2D finite element model provided a FoS for roof failure of 1.20, considered adequate...

... and highly fractured rock, the erosion rapidly undercuts geological structures; enabling large instabilities to occur. When uncontrolled, the problem progressively worsens leading to the development of large chasms along major geological structures on pit slopes. Chasms up to 450 m high and 250 m wide have...

... response. These uncertainties are translated into hazards of potential rock mass instabilities, necessitating the need for measures to manage risk by eliminating, mitigating, accepting or transferring it. Each underground construction has varying degree of risk based on its actual site conditions...

..., implemented measures to resume excavation again, have to be documented. Figure 1 shows a flow chart of such a documentation and the use of gained experience for future projects. category instability excavation tunnel boring machine information evaluation shield TBM suggestion technical defect...

... of an open pit mine, to follow and detect movement intensities ranging from millimetric to metric scales. Several vulnerable parts of the mine have been studied and monitor- ing of these very small to very large instabilities has provided valuable information for risk and exploitation management at the mine...

... < 50, the medium is discontinuous: the failure occurs by block instability. One of the first steps of the analysis is the identification of the fractures families and of the joints properties; For Cf < 5 and cm/ 0 < 2, the failure could occur close to the wall of the cavity, by spalling of the rock...

... of the mine incipient instability problems were detected. Simplified stabilization methods were proposed, analysed and implemented, including the construction of a timber crib and the perimeter cabling of not-so-stable pillars in order to avoid rock-fall and progressive failure and to slightly increase pillar...

... Abstract The influence of water on slope instability can generate forces that may produce a total or partial terrain collapse. An exhaustive geotechnical, geological and hydrogeological analysis was carried out during the life of the mine and served a foundation for consecutive estimating...

.... However, like the rest of tunnel monitoring methods is always difficult to perform an analysis of the mea- surements obtained, especially if the number of data is large. The tunnel geomechanical monitoring should always tries to evaluate whether the measures indicate the existence of instabilities...

... Alejano discontinuity instability complex slope failure Upstream Oil &amp; Gas mechanism quartzite slope extrusion numerical model displacement slope failure Limit Equilibrium Method shear strength reduction technique failure mechanism orientation slope height artificial support...

...Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 Geophysical characterization of an instable rock mass C. Colombero & C. Comina Earth Science Department, University of Torino...

... Upstream Oil &amp; Gas RME metals &amp; mining TBM shale asturia Reservoir Characterization methane tunnel face emiliano formation oviedo Pajare tunnel emission excavation tunnel Excavability structural geology injection correlation instability Bieniawski north portal Rock...

... through conventional GI, so the back analyzed behavior has been the main tool for the design. 1. Introduction It has been generally acknowledged that high slopes existing in rock mass characterized by persisting discontinuities subparalel to the slope can lead to complex instabilities. These phenomena...

... on the causes and impacts of these earthquakes, different types of the slope instabilities observed or reported after each event will be introduced and discussed. In addition, the impacts of landslides on post-earthquake activities such as emergency response and reconstruction of the damaged areas...

... moments during unstable periods versus deformation curves were detected by the derived velocity and acceleration curves. 1 INTRODUCTION In open-pit mining, slope design and stability are important to the safety of the plant and its economy, for slope instability can cause loss of lives and property. Slope...