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Keywords: wave velocity
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Proceedings Papers
Underground Work In Bucharest - Geotechnical And Hydrogeological Factors
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-535
... publishing house amplitude soil layer stratum construction ground surface wave velocity underground work hydrogeological factor Bucharest deposit river UNDERGROUND WORK IN BUCHAREST GEOTECHNICAL AND HYDROGEOLOGICAL FACTORS Eng. George Rozorea11, Dr. Eng. Virgil Fierbinteanu2, Eng. Viorica...
Proceedings Papers
Seismic-Wave-Based Testing In Geotechnical Engineering
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-038
... be rendered from the tomographic reconstruction of boundary measurements. Finally, the increasing importance and future developments in this area are discussed. frequency shear wave velocity characteristic Engineering laboratory Reservoir Characterization wavelength receiver Upstream Oil...
Proceedings Papers
Characterization Of Municipal Solid Waste Sites Using The Continuous Surface Wave Method
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-120
... ABSTRACT: The continuous surface wave system (CSWS) is a non-intrusive geophysical technique used for evaluating subsurface shear wave velocity profiles. It makes use of Rayleigh (surface) waves that propagate within a zone approximately one wavelength in depth. In ground where the stiffness...
Proceedings Papers
Compact Vertical Seismic Profiling System And Its Application In Underground Excavation
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Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-175
... wall. The distribution of the elastic wave velocity in rock can easily be measured along a borehole drilled for rockbolts. INTRODUCTION Stability analysis of underground structures focuses on the tunnel linings, the loosened zone and the surrounding non-damaged rock. For an analysis aimed...
Proceedings Papers
Shear-wave Birefringence And Directional Permeability In Fractured Rock
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Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-034
... to create the cracks in planes parallel to the sample axis. Compressional - and two shear-wave velocities, having particle motion parallel and perpendicular to sets of cracks, were determined concurrently with permeability measured in the same direction. Significant changes in both permeability and elastic...
Proceedings Papers
A Laboratory Investigation of Acoustic Emission And Elastic Wave Velocity Changes During Rock Failure Under Triaxial Stresses
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Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-030
... ABSTRACT: Laboratory results from triaxial deformation tests on sandstone are presented where changes in the elastic P-wave and S-wave velocity have been measured and compared, and in addition the rate and amplitude distribution of acoustic emission events has been recorded. The experiments...
Proceedings Papers
Rock Mechanics And Rock Acoustics
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Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-045
... Upstream Oil & Gas wave velocity correlation rock acoustic elastic moduli Reservoir Characterization attenuation Rock mechanics rock strength moduli reservoir geomechanics microcrack information dynamic moduli loading strength anisotropy propagation acoustic measurement...
Proceedings Papers
General Report: Seismic Rock Properties For Rock Mass Descriptions And Fluid Flow Monitoring
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Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-136
... (1) where Vm is the P wave velocity of the rock matrix, and Vf is the velocity of the 1081 pore fluid. When both Vm and Vf are fixed, the only variable in the equation is porosity. To a first order this simple equation appears adequate for clean sandstones in the middle range of porosity (10% < 4...
Proceedings Papers
Relation Between Uniaxial Compressive Strength And Elastic Wave Velocity of Soft Rock
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Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-002
... ABSTRACT This study is carried out to study the engineering properties of soft rocks having uniaxial compressive strength about 10 to 100 kg/cm2. Recently measurement of elastic wave velocity becomes useful method to estimate Young's modulus and compressive strength of concrete and rock as non...
Proceedings Papers
The Stability of Surrounding Rock And Its Control of Railway Tunnel In Weak Rock
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Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-158
... are basically similar to those in the longitudinal direction. The relaxation zone and the stress concentration zone gradually Il»erv.ll1O'l hok Ht.~ ilbo~ 10 Mh (f0W19 'lip l~) ~ / " s 1 c l DII~ d tap-~ frotrl ~l'4J1M w.. 3 Dilbnu crt 1_ ~h fro", ,. 1lILtc Figure 5. The variation of wave velocity during...
Proceedings Papers
Weak Rocks of Southern Florida
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Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-065
... Upstream Oil & Gas US government Reservoir Characterization southern florida wave velocity PSM thompson formation compressional wave velocity triaxial test Refraction study shear wave velocity limestone pressuremeter test fort thompson formation geophysical test Florida dry...