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Keywords: ground surface
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Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-213
..., numerical simulations were performed to study the propagation of low-frequency waves through a rock mass near a tunnel. A single period sinusoidal wave was applied as dynamic source on the floor of the tunnel. Observation points were located on the ground surface and around the tunnel. The influence on wave...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-384
... for com- mercial use. The directional drilling started from the ground surface at an angle of 30 degrees from vertical. After reach- ing the P-seam at about 340 m deep, the drill bit was changed to be driven by a downhole motor and then kept within the seam drilling towards the gas production well...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-144
... is a fully three- dimensional model for single block dynamics (Nishimura, et al. 2003). The driving force is gravity. During its motion, the block makes successive impacts on the ground surface. These impacts involve frictional contact and viscous damping response. The solution algorithms are briefly...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-192
... excavation hydro-fracturing test in-situ stress measurement principal stress Fracture design and containment vertical stress ground surface measuring point stress state stress measurement tunnel 1109 Song, W.K. et al., In-situ stress measurements in underground an oil storage cavern using hydro...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-319
... ABSTRACT: This paper summarizes some phenomenological research results from underground nuclear explosion tests in rock. These include effects on the rock in the free field, rock deformation and rupture near the ground surface, hydrological effects, and damage in the vicinity...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-021
... analysis by using the finite difference method is carried out to exactly simulate the excavation process of the high rock slopes. step excavation displacement rock bolt high slope granite Reservoir Characterization modeling dam site mechanical property excavation ground surface lock...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-070
... the international terminal, Terminal 5. The, terminal building is grounded on concrete footings with loads up to 11000 kN/footing on the ground surface. The rock overburden is about 11 - 13 m, less than. half the width of the station. The rock mass mainly consists of heavily foliated and jointed micaceous schist...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-113
... of rockmass and analyses its affecting factors. Finally, the authors introduce a supporting practice of a deep roadway lying at a depth of 1155m below ground surface. RESUME: En utillsant Iepaisseur de Ia zone de crevassement comme I'lndice de Ia stabillte des parois rocheuse de Ia galerie aux grandes...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-119
... obtained from the dynamic experiments. Some considerations are given regarding the experimental results, and new facts are found. 2 STATIC EXPERIMENTS 2.1 Experimental method and device Fig. 1 shows the experimental device used. Half of the shallow ground with a ground surface is treated here...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-134
... due to the decline in piezometric head. However, surface subsidence will occur as a result of three dimensional propagation of the deformation of confined aquifer, characterized by an influence factor within a limit angle Ψ, as shown in Figure 1. ground surface groundwater time factor...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-033
... Rock_ 10 0.2 r-J:r~n 100.0 33.3 30 0 It,r_d,a- 10.0 3.3 0 racture 2Se rlnor Frac- 1.0 0ure Zone. 0.3 20 J , ".The ice Joadi,ng from a 3 km thick ice she~t is ~ simulated by a vertical stress of 27 MFa on the ground surface, with !he assumption that the ice has a density of 900 kg/m . The boundaries...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-188
... The test site where trial blasting has been conducted is shown in Fig.3. Upstream Oil & Gas ground surface detonation pressure Reservoir Characterization frequency detonation velocity maximum particle velocity analytical contribution reservoir geomechanics relation accuracy...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-180
... known Larderello geothermal reservoirs. In addition to the high temperature of the virgin rock mass (75°C at 500 m depth below sea level, near to 800 m below ground surface), a strong influence on the temperature conditions underground is that due to the heavy mechanized systems used for excavation...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-093
... displacements and their effects on neighboring structures. As surface displacements are affected not only by such geometrical conditions as the depth of burial for a tunnel and inclination of ground surface but also by several geological properties, little information has been available up to now about...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-237
... square meter for overburden, sandstone and siltstone respectively; average unit weight 2.60 tons per cubic meter; and ambient stress coefficient equal to 1.00. The material layers are considered parallel to the ground surface. The top layer is overburden, the middle layer is sandstone and lower layer...
Proceedings Papers

Paper presented at the 2nd ISRM Congress, September 21–26, 1970
Paper Number: ISRM-2CONGRESS-1970-172
... Computers basiert — Detaillerte Auswertung, Interpretation und Vergleich der Ergebnisse von Feld- und Labor versuchen und der Modell Analyse in Hinblick auf ihre praktischen Folgerungen. reservoir characterization mining chambre 2940 ground surface upstream oil & gas crestmore deformation...

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