..., boundary conditions and stress path, was done using FE forward modeling. In the laboratory test, the MLW junction is represented by two, overlapping, parallel, horizontal holes (tunnels) drilled at the mid height of a cylindrical sample (figure 8). This design was chosen in preference to diverging tunnels...

... and the other being a strike-slip fault environment. To evaluate the suitability of both sites, consideration must be given to the repository permeability, depth, footprint layout and tunnel stability. All of these factors are influenced by the stress magnitudes and orientation; hence every effort must be made...

..., UK M.R.Asef The Ministry 0/ Culture and Higher Education 0/ Iran (MCHE) ABSTRACT: In this paper the use of a novel design tool for the early stages of a tunnelling project is demon- strated. By applying this tool to evaluate the influence of support capacity and yield in a wide range of rock mass...

... of Tunnel Boring Machine (TBM) have attracted worldwide attention and there has been tremendous growth in this rapid, effective means of mechanical rock excavation. This has been reflected in more research on the performance of the tunneling machines and the properties of rock and rock mass. For example...

...Pacific Rocks 2000, Girard, Uebman, Breeds & Doe (eds)© 2000 Ba/kema, Rotterdam, ISBN 90 5809 1554 TUnnelling in fault zones - Innovative approaches G. Riedmiiller Institute of Engineering Geology and Applied Mineralogy, Technical University oJGraz, Austria W.Schubert Institute of Rock Mechanics...

...Pacific Rocks 2000, Girard, Uebman, Breeds & Doe (eds) © 2000 Ba/kema, Rotterdam, /SBN 90 5809 1554 Construction example for tunnelling under and adjacent to complexity condition in weathered rock Myong-Jin Choe - NESGEO, Taejeon, Korea Song-Hoon Baik - Korea Telecom MTS, Taejeon, Korea Se-Hwan...

... underground at a deep lcvel gold mine in South Africa. The rockburst was simulated by means of a explosion detonated in solid roek dose to a tunnel sidewall. The experiment involved the design of a seismic source using numerical modeling and em- pirical equations, seismic monitoring by a fairly dense seismic...

... tunnel 3 borehole specimen reservoir geomechanics Thickness marl investigation Reservoir Characterization support structure tunnel lining turmel Drilling observational method theoretical result lining permeablity girder Upstream Oil & Gas information diameter tunnel 1...

... stabilization monolith tunnel Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) O 2000 Balkema, Rotterdam, ISBN 90 5809 155 4 Blasting and excavation in sensitive rock L. L. Oriard Lewis L.Oriard Incorporated, Huntington Beach, Calij, USA ABSTRACT: There is a fairly common belief that any rock...

... ABSTRACT ABSTRACT: During the Exploratory Studies Facility (ESF) construction, steel sets were used as a means of ground support while advancing the tunnel through the difficult ground conditions. The steel sets were assembled at the tunnel face and jacking loads were used to expand the sets...

... ABSTRACT ABSTRACT: Cement-based grouting technique is normally applied to the crown area of the shallow tunnel so that the instant reinforcement and the long-term stability of a tunnel are assured. However, the assessment of the reinforcement effect has not been fully understood so far...

... average value deformation stabilization block structure rock mass displacement contour tunnel contour AIF strength dry contact specimen Upstream Oil & Gas internal friction fractured rock mass vicinity plastic material evaluation tunnel deformation Pacific Rocks2000...

... ABSTRACT ABSTRACT: This paper presents a case study on the optimum design of excavation and support system of a shallow tunnel which is faced with the unexpected bad geological condition during excavation, The detailed geological investigation shows that the rock mass in the region of concerns...

... Upstream Oil & Gas horizontal displacement reservoir geomechanics displacement Rotterdam jointed rock mass rock engineering Reservoir Characterization modeling TH cavern Balkema yufin rock structure stability excavation tunnel Engineering cavern lining rock mass numerical...

... partially linearized elastic law. Then, drying effects on a tunnel structure are studied. Analytical and three-dimensional numerical calculations are performed : they show that high tensile stresses appear and that convergence is significantly increased. It seems to explain the apparition of a regular...

... ABSTRACT ABSTRACT: In any engineering geological site investigation, use of geophysical techniques based on the geological model is essential. Geophysical investigation along a tunnel alignment to predict the geological section has usually consisted of seismic refraction and electrical...

... an essential component of brittle failure: cohesion weakening and frictional hardening as a function of plastic strain. Reservoir Characterization Martin mine-by test tunnel notch Upstream Oil & Gas brittle failure brittle cohesion-friction model reservoir geomechanics tunnel plastic strain...

... Characterization strength experiment reservoir geomechanics vault excavation laboratory ufdp report martino container mine-by experiment long-term loading test Upstream Oil & Gas Simulation excavation design rock failure mine-by tunnel rock mass Canada excavation tunnel ontario power...

... construction crack initiation specimen excavation process loading tunnel deformation rock mass Rock Mech Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) O 2000 Balkema, Rotterdam, ISBN 90 5809 155 4 Experimental study on failure behavior of tunnel in jointed rock mass under excavation...

..., stable, effective, and works also for non linear rock mass behaviour. For illustration, this method has been applied to a subsidence problem in a mining area, to a shallow tunnel numerical model, and to a tunnel excavation case history. reservoir simulation back analysed metals & mining...