... of unlined pressure tunnels has been one of the most successful developments in Norway. This concept has gained worldwide reputation for its cost effectiveness, time saving and simplicity in construction of water tunnels in hard rock mass with favorable in-situ stress conditions (Panthi and Basnet, 2016...

... geology Singapore fracture network fractured rock rock mass permeability fluid flow fracture rock mechanics symposium arms10 29 mining discrete fracture network A Methodology for Geomechanical Modelling of In situ Recovery (ISR) in Fractured Hard Rocks M. Sharifzadeha*, C. Aldricha, E...

... and tunneling is one of the most significant concerns of geotechnical engineers. Rock reinforcement methods can be used to increase rock strength and minimise the displacement of unstable rock mass. It is important to understand how the reinforcement systems work to ensure the stability of underground...

... field characteristics and the number of seismic events in different parts of an object. This provides a way to predict the induced seismicity parameters in course of mining. Comprehensive approach to reconstruction of stress fields in rock mass at any stage of mining was offered and realized...

... fractured rock mass is singularly challenging to simulate mathematically. At the discrete level there are strong fabric issues (oriented joint sets, perhaps faults, weak bedding planes), different joint properties, Biot coupling, advective-conductive heat transfer, and flow in joint arrays with changing...

...Influence of the Block Shape and Orientation on the Global Rock Mass Stiffness L. Gottsbachera*, A. Buyera and W. Schuberta a Graz University of Technology, Graz, Austria *[email protected] (corresponding author s E-mail) Abstract Rock engineering in blocky rock masses demands a sound...

...-mail) Abstract To improve the effective use of rock bolt support system for practical and economic considerations in support system. A generic rock bolt design procedure usually starts with the identification of the rock mass strength, which is a process to minimize the deformation induced by the dead weight...

... the intrinsic product tightness of the host rock. Geologists and engineers were looking for and did site caverns in rock masses having a very low permeability. Fig. 1. Mined cavern with room-and-pillar design (left) and current cavern design (right). The majority of room-and-pillar storages in the USA were...

... Abstract The behaviour of jointed rock mass is highly dependent on the properties of rock joints. One of the most important property used in identifying the behaviour and performance of rockmass is the joint stiffness and the deformation behaviour of tunnels in jointed rocks is dependent...

... into the turbine, its positioning also defines the location, length and layout of several other tunnels. The key for deciding on positioning of the transition zone is to identify a place with sufficient in-situ rock mass stress to withstand the internal water pressure generated from the hydraulic head...

... to be the smart structures by not only resolving various problems associated with storage and transportation but also helpful in maintaining traffic due to scarcity of land. Due to heterogeneous behavior of rock-mass, urban tunnels are highly susceptible to failure. Massive deformation in the lining...

.... The results indicated that parameters including length, position of crest section of the asymmetric flat-topped arch structure(AFAS) and its height kept decreasing with increment of coal seam angle, showing extremely asymmetrical characteristic. simultaneously, the total weight of caving coal and rock mass...

... author s E-mail) Abstract Drilled shafts or bridge piers can transmit huge structural loads (both axial and lateral) through the overburden soil to the underlying rock mass. Drilled shafts are usually socketed into rock to increase their axial and lateral load carrying capacity. The part of the shaft...

... Abstract The mechanical properties of rock masses are significantly affected by the additional mechanical compliance that result from joints, fractures or faults. The effects of these features, generally referred to as joints, can be so influential in many problems of geology, geophysics...

... structural geology correlation seismic event energy release Upstream Oil & Gas isrm international symposium asian rock mechanics symposium 29 cohesive element criterion numerical simulation rock mass Reservoir Characterization Simulation Magnitude Beck levkovitch constitutive...

... Reliability Based Robust Support Design for Tunnels in Weak Rock Mass Bhardwaj Pandita* and G. L. Sivakumar Babua a Indian Institute of Science, India * [email protected] (corresponding author s E-mail) Abstract Support design in tunnels is challenging if the uncertainty in surrounding rock...

... jointed rock masses under high stresses (Kaiser et al. 1996; Martin 1997). It is a gradual process of stress-induced slabs formation and initiates in the region of maximum tangential stresses on the underground excavation boundary and results in a V-shaped notch. Breakouts or V-shaped notches...

... compressive strength (UCS). Thus, HB strength criteria considering seismic effect was obtained. It is practical to estimate the mechanical properties of rock mass considering seismic effect with the seismic HB strength criteria and Hoek & Diederichs equation based on the UCSs at various strain rates...

... Abstract Bedded coal and iron ore deposits in Australia are usually hosted in complexly jointed, faulted or folded, highly anisotropic rock masses. In coal, these often comprise moderately strong siltstones and sandstones with weak coal seams, siltstones and shales. For iron ore...

... Reservoir Characterization stress component borehole rock mass reservoir geomechanics flow rate porous rock Upstream Oil & Gas isrm international symposium determination stress measurement fracture limitation hydraulic fracturing viscosity asian rock mechanics symposium 29...