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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-2011-384
... ground surface borehole drill bit azimuth azimuth drill bit location Directional Drilling Drilling production well exploration geophone Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Real-time microseismic...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-213
... 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 propagation from overburden, position...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-144
... is a fully threedimensional model for single block dynamics (Nishimura, et al. 2003). The driving force is gravity. trajectory numerical simulation roadway probability ground surface three-dimensional numerical simulation procedure average vehicle velocity rockfall probabilistic...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-192
... storage cavern 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...
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 of the...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-021
... property excavation ground surface lock chamber boundary condition excavation process Dimensional Behavior Gorge Project coordinate system stability ship lock deformation Three dimensional behavior of the high slopes of ship locks in Three Gorges Project Le comportement tridimensionnel des...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-070
..., concrete; footings with. loads , up I 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 and gneiss. 1. ll:; "1' 1 , I,' 'h ,>1. .The rock excavation...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-113
... formula for calculating the thickness of the broken zone on the basis of the strain-sofening and volume expansion properties 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 I En...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-119
... with those 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...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-134
... deformation 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
... Sweden rock mass tunnel repository Magnitude ground surface Earthquake waste repository loading glaclatlon Modelling of rock masses for site location of a nuclear waste reposit~ry Modell eines GebirgskOrpers im Bereich einer unterirdischen AtommOlldeponie Modelisation des massifs rocheux pour...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-188
... Test site 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...
Proceedings Papers

Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-180
... away from the well 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...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-237
... tons per 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...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-093
... relation hisatake shear modulus surface settlement equation ground surface boundary condition surface displacement displacement creep function tunnel excavation settlement viscoelastic ground tunnel center line tunnel anisotropy shallow tunnel excavation initial stress...

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