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Keywords: water pressure
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-602
... of the CAES in Japan. natural gas storage air injection Test characteristic storage cavern structural geology borehole water pressure leakage Reservoir Characterization air tightness cavern air storage coefficient Air permeability Upstream Oil & Gas air tight pressure unlined cavern...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-407
... of the damage to quay wall (Japanese Geotechnical Society, 1994; Hokkaido Development Bureau, 1996). displacement water pressure excess pore water pressure ratio liquefaction earth pressure Westergaard Gravity Type Quay Wall quay wall dynamic behavior caisson backfill inertial acceleration...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-435
... in the modeling of the physical process. relation probability theory discontinuity zadeh Engineering geotechnical engineering water pressure Artificial Intelligence rock bearing strength modeling information application excessive settlement fuzzy logic clay layer fuzzy characterization model...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-520
... transient seepage analyses of pore water pressures in unsaturated soil slopes have been carried out. However, the influence of rainfall patterns on pore water pressure induced by infiltration has seldom been reported. In this paper, three-dimensional computer simulations were carried out to investigate...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-515
.... It was found that the inducement of landslide was started from the lower part of middle slope. The seepage from upper slope as well as back-up migration of saturation front in response to rainfall played an important role in triggering the slope failure. Indeed, the largest increment of pore water pressure...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-456
... ABSTRACT: Natural surface water and pore water in the subsoil is not an ideal, incompressible fluid. Small microscopic air (gas) bubbles are dispersed in the water, so the fluid shows a certain compressibility. Compressible pore water causes a delayed reaction of the pore water pressure on any...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-436
... in rock slope stability analysis are generally related to four main aspects: 1) Geometry, 2) Joint friction, 3) Water pressure and 4) Seismicity. The geometrical data are defined by field mapping, sometimes supplemented by stereographic projection 1Norwegian University of Science and Technology (NTNU...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-526
... seepage analysis tunnel slurry concentration equation telecommunications mud slurry permeation friction resistance slurry flow in porous media mud screen water pressure slurry permeation construction thrust A NEW METHOD FOR THE CONSTRUCTION OF SMALL DIAMETER TUNNELS USING SLURRY PIPE...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-531
... ABSTRACT: Dewatering of soils by wells and wellpoints is a cost effective way of controlling pore water pressures and inflows into deep excavations. Traditionally installations have been carried out by drilling from the surface and installing wells with sand filters placed around a wellscreen...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-082
... seepage analysis water pressure expansion model fill calculation rainfall reliability pore water pressure foundation embankment wet zone centrifuge test slope surface rainfall device equation front face phreatic surface seepage flow constant strength ABSTRACT...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-038
... 1983; Carlsson et al 1985; Martna & Hansen 1986). The effect of a fault depends on the initial rock material, the material in the fault such as fault gouge, fractured rock, mylonite, sand, clay etc., water pressure and upon the orientation of the fault plane and the rock stresses in relation...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-031
... ABSTRACT New design concepts, including the application of high pressure epoxy grouting techniques has been successfully employed for the construction of concrete plugs for water pressures up to 965 metres at Norwegian hydropower projects. In addition to hydropower plants, the developed...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-042
... the internal water pressure by studying the cross sections of the tunnels. But few researchers studied logitudinal section along the tunnel as the Norwegian did in FEM charts, surly that they did not take into account the case with high pressure water filling in joints and stratification plane. CALCULATION...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 31–September 3, 1986
Paper Number: ISRM-IS-1986-061
... will imply a new world record in water pressure on unlined rock. A basic design criterium for siting of an unlined pressure shaft is that the minimum in situ rock stress should be higher than the water pressure at all Points along the shaft, in order to avoid the risk of failure by hydraulic fracturing...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-063
... equal to the subsurface water pressure, which varies linearly along the height of the lining. DESIGN OF LININGS OF ARBITRARY SHAPE SUBJECT TO INTERNAL PRESSURE Considered here is the plane contact problem of elasticity theory concerning the equilibrium of a ring of arbitrary shape (with a single...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-059
... by allowing the permeability of the fractured rock mass in the plastic zone to vary with the square of the volumetric strain, and evaluates the influence of water pressure subsequently applied inside the lined excavation. ZUSAMMENFASSUNG: Ein Hauptfaktor der die ausfuerliche Anwendung der Methode der...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-080
... gradient and form an angle with it. Fluid Dynamics History water pressure excavation seepage force Upstream Oil & Gas calculation characteristic tensile stress stress distribution tunnel stress boundary condition lining increment flow in porous media seepage potential field water...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-060
... SUMMARY: Experience has proved careful design, supervision and control during filling of pressure shafts and tunnels necessary to prevent costly and unforeseen repairs and production losses. To prevent hydraulic splitting in unlined pressure tunnels and shafts, the internal Water pressure...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-056
... of the intended water pressure. "STATE OF THE ART" STUDY In order to establish design criteria for the project a "state of the art" study was performed, including: – Review of proposed design guidelines for unlined pressure shafts. – Case studies of existing unlined high pressure tunnels and shafts...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-077
... overburden stress water pressure evaluation reservoir geomechanics test chamber lining leakage tunnel permeability alignment internal pressure deformation interface prestress stress condition ROCK ENGINEERING ASPECTS OF THE CONCRETE LINED PRESSURE TUNNELS OF THE DRAKENSBERG PUMPED STORAGE...

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