... detailed geological and geotechnical studies. The rock formations, which give shape to the slopes of the canyon, are very weathered. During the construction phases different kind of geological phenomena were faced, which threatened the overall stability such as: rolling rock masses, superficial sliding...

... operator. The main rock mass characteristics considered to predict fragmentation from rock blasting (i.e. discontinuities' orientation and spacing) are obtained from each of these tools. Discontinuities' spacing has been assessed in photogrammetry models along a dense set of scanlines oriented in four...

... damage zone (EDZ) with higher hydraulic conductivity than the undisturbed rock mass. This paper studies the groundwater pressure in the rock mass surrounding the Gevingåsen tunnel, a drill-and-blast railway tunnel in Trøndelag, Norway, lined in the walls and crown with an undrained lining structure...

... as a function of their hydraulic conductivity, mechanical properties and geometry is necessary for evaluation of the stability of the fractured rock mass. The stability and tightness of a hydrocarbon storage cavern in a fractured rock mass have been modelled using DISROC ® finite element code developed...

... Abstract Anticipating the geomechanical behaviour of rock masses encountered, or expected to be encountered, during mining is essential to strategic and optimised geomechanical design procedures. This requires early understanding of the site geology and tailored geomechanical data collection...

... A place within the rock mass remains supporting stresses in a state of equilibrium; when the excavation is carried out, an empty space is produced, redistributing the stresses and generating a new state of stresses. In some cases, the stresses exceed the strength of the rock, inducing gradual...

... Abstract Interpretations of cavity expansion tests (pressuremeter, radial jack, etc.) are based (in most occasions) on the analysis of the deformability of a cylindrical cavity in a continuous, isotropic, and homogeneous medium. However, many rock masses show an anisotropic behaviour due...

... and deformability. Those methods may result in more or less realistic results in generally fractured rock masses, but will not be able to provide realistic results in strongly anisotropic rock masses. The structure of the rock mass plays an important role for the behavior of tunnels. The generally reduced shear...

... together with a jointed rock mass model are used. In marble quarries, particularly in this locations, the rock mass is severely affected by sliding blocks, caused by four intersecting joint sets. Stability analysis were conducted under static and dynamic conditions using Phase2 V.9.016 software. Shear...

... deformation modulus procedia engineering 191 stress-strain state metals & mining hydraulic jack mechanical property rock mass stress condition reservoir geomechanics impermeable stratum berezniki potash deposit-2 pillar rib pillar borehole experimental study saliferous rock Procedia...

... in the slope were firstly determined by the in situ study and rock mass mechanical properties were then estimated to be taken as input parameters in the numerical modelling, for understanding the instability mechanism of the slope. Results from this synthetic assessment together with the monitoring data...

... and geological strength index. These two parameters are the most influential on the proposed partial factor. 1. Introduction Hoek-Brown (HB) criterion has been utilized for over three decades to characterize the failure envelope of rock mass [1]. It has gained a lot of attention from rock mechanics...

... researchers and geomechanical experts have explored the rockburst mechanism, its regularities and natural relations. Nevertheless, there are many things about rock mass properties and rock mass behavior that we do not know yet. Together with gaining valuable knowledge, the development of rockburst protection...

... Abstract The purpose of this review is to present the state-of-the-art methods, problems and potential future design techniques used for rock engineering in frozen ground, with particular regard to the design of mine openings in rock masses that may be subject to thawing. The impetus...

... displacement vector orientation water management deviation solid waste management prediction excavation exploratory tunnel deformation schubert procedia engineering 191 rock mass Fault Zone evaluation repository prediction possibility Displacement Measurement vector orientation tunnel...

... the injected cold water circulates into the rock mass and is heated up in contact with the hot rock. This hot water is then extracted in the second borehole and treated to remove energy. Later, this cooled water is re-injected in the first borehole. The effectiveness and the efficiency of the system depends...

... in the rock mass consists in the solution of the numerical equation of motion [14]: ttRttKqttqCttqM ' (2) where: M mass matrix, C damping matrix, K stiffness matrix, R vector of external loads, qqq node displacements and their first and second derivatives (velocity and acceleration, respectively...

... dynamic brittle effects occurring within the rock mass. New development of a 2-dimensional dynamic rock fracture model (DRFM 2D ) in FLAC 2D [1] challenges the use of numerical methods, demonstrating superior computational efficiencies towards accurately modelling the dynamic brittle fracture...

... extent. This hazard can be minimized by employment of active rockburst prevention, where long-hole destress blasts in roof rocks (torpedo blasts) have an important role. The main goal of these blastings is to either destress local stress concentrations in rock mass and to fracture the thick layers...

... these purposes there is prevention from air filtering from the mine working into degassing boreholes. The sealing quality estimates the efficiency of the preliminary coal beds degassing. There is a problem of the air inflow into methane withdrawal point through the rock mass. A well-known solution addressing...