... Abstract. Hydraulic fracturing in a stiff naturally fractured rock mass such as a shale gas reservoir or a geothermal site in an igneous rock involves a complex interaction between the stress and flow effects of the induced fracture process with a geometrically complex, strongly anisotropic...

...- dependent. This is rarely quantified by designers, and is therefore a source of risk, by default. Another important item for correct prognosis is the recognition that reduced penetration rate PR can sometimes occur when thrust is increased by the TBM operator, due to exceptionally resistant rock mass...

...Geotechnical characterization of the rock mass for rock-embedded pile foundations: Case study Marilia Dantas da SILVAa,1 and Roberto QUENTAL COUTINHOa aFederal University of Pernambuco, Recife, Brazil Abstract. The geotechnical characterization of the rock mass for rock-embedded pile foundations...

...Mechanical behaviour of Carrara marble rock mass related to geo-structural conditions and in-situ stress Domenico GULLÌa,b,1, Maura PELLEGRIa,b and Daria MARCHETTI a,b a AUSL1 Massa Carrara - Tuscany, Italy b Operative Unit of Mining Engineering (U.O.I.M.) Carrara, Tuscany, Italy Abstract...

.... Therefore, it is important to collect large amount of data regarding to the rock mass geological and geotechnical characteristics that will be useful in further analysis.In this article the results of the roughness characterization of different discontinuity sets showed high variability for the shear...

... Abstract. The application of the Disturbance Factor (D) in the stability of rock slopes has been the subject of much debate among practitioners since its first appearance in the paper Hoek et al. (2002). For mined slopes, it is generally accepted that rock masses are subject to near-field...

... behaviors were observed on hard rock and soft rock. Slope instability processes include mass displacement and failures due to decompression generated by excavation. Some reported cases occured during the execution of the work, including various types of failures. In many sectors, rock masses showed a high...

... reserved. doi:10.3233/978-1-61499-599-9-393 393 A statistical approach was selected to elaborate this methodology. Several analyses with finite element numerical models were carried out, applying the Monte Carlo Simulation. Permeability values for the rock mass used in the models were obtained from...

.... This approach, however, disregards the inherent complexity of rock masses and the likely influence of the internal discontinuities and/or defects into the actual potential for disintegration of a failed volume. The work presented in this article addresses a first approach to this issue by proposing the use...

... Anchor giacchetti protection rock mass reservoir geomechanics Thickness plane inclination Garcia moura costa nobre steel mesh Brazil bertolo Secured drapery system in the highway BR 163, Nobres MT, Brazil. The use of steel mesh Clovis Fernando de MOURA COSTAa,1 and Matheus GARCIA b...

... of the rock mass and spatial orientation of the fault systems. The behavior of rock slopes, in terms of stability as well as the occurrence of displacements caused by excavations, is investigated using two and three dimensional numerical models based on the finite element method, considering the Mohr-Coulomb...

... rock mass, in order to obtain low dilution. 1. Introduction The Inmaculada Mining Project mainly consists in the operation of its Angela Vein, which has economic silver (Ag) and gold (Au) values. The vein dips 60° towards the southeast, and measures 2 kilometres (km) in length, has a height of 200...

... the extent of the disturbed zone, as well as the distribution of strength degradation of the rock masses within a mined slope. In this study, an empirically based guideline is proposed for the distribution of disturbance with depth in a slope. Furthermore, a first step is made at providing a mechanical...

... Abstract This research provides the first steps in studying of Rock Mass - Shotcrete Interface behavior in creep process like the adherence generated in the interaction of both, which is determined by applying the criterion of shear strength for rough joints of Barton using destructive...

... individual rock blocks which may be unstable within a rock mass. The method using DFN combined with polyhedral modelling and kinematic analysis is thus useful in providing a first and rapid assessment of both the location and likelihood of these potential threats. However, the method does not account...