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Landslide appraisal and investigation
143A 874111 ln-situ stress in relation to topography and major fracture in rocks: an example from Martin Count2,, Eastern Kentucky Unrug, K F: Mateer, R S
874114 Landslide appraisal and investigation Haydon, R E V Proc Symposium on Landslides in the South Wales Coalfield,
Proc Symposium on Application of Rock Characterization Techniques in Aline Design, New Orleans, March 1986 P237244. Publ Littleton. AIME. 1986
Polytechnic of Wales, Pontypridd, 1-3 April 1985 P37-44. Publ Pontypridd." Polytechnic oj Wales, 1985
Three stress determinations were made in different locations to explore how the complicated topography of this steeply ridged terrain had influenced the stress directions and distributions in the ridges remaining from the original plateau. Work consisted of drilling vertically' into the roof of the mines at the three locations, examining with televideo borescope to select sites for strain gauge mounting, attaching triaxial gauges, stabilizing and overcoring for on-site measurement of relaxation. Data were analysed by computer to define principal stresses and directions. Correlations were found between the major directions of stress and topographical features as well as presence of major fractures in rocks. An attempt to explain observed phenomena is given with mine design implications.
Site Investigation and Field Observation See also. 874225
874112 Underground valves chamber of the Pecineagu dam Harsulescu, 1 A Proc International Symposium on Large Rock Caverns,
Helsinki, 25-28 August 1986 V1. P307-313. Publ Oxford." Pergamon Press. 1986 This 108m high rockfill dam is situated in a region of metamorphic rocks. Before construction started, engineering geology maps were prepared, trial galleries and shafts excavated, boreholes drilled, in situ tests of rock mechanical properties caried out and seismic surveying undertaken. Following this extensive program to determine dam foundation conditions, no problems arose during excavation of the valve chamber.
Appraisal and investigation of slopes, either those with a history of instability or those where engineering work is to be carried out, are discussed. The various stages of investigation, initial use of available data and photographs, topographic surveying, and site investigation, including core drilling and establishment of the piezometric conditions, are described. Suitable sampling and water pressure measuring techniques and equipment are suggested.
Remote sensing and photographic techniques 874115 Proposal of a remote sensing method for measuring soil moisture of bare soils in the frequency range 100MHz-IGHz Sassi, K; Tabbagh, A Ann Geophys I74, N6B, Dec 1986, P625-638 Soil dielectric constant is the property most sensitive to soil moisture. In the frequency range 100MHz-IGHz sufficient ground penetration is available to usefully measure this parameter. The frequency, angle of incidence, and the polarisation which give the best sensitivity to dielectric permittivity have been analysed using a two layer flat model. The effect of surface roughness has been examined to determine difficulties which can arise in remote measurement of permittivity for calculation of moisture content. 874116 Measuring platform subsidence using GPS satellite surveying Collins, J
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 V2, P335-338. Publ Richardson, Texas: OTC, 1986 The Global Positioning Satellite (GPS) surveying technique has been used over a year to measure the subsidence of offshore oil platforms in the North Sea. Subsidences in the centimetre range can be detected. It is suggested that even higher accuracy could be obtained if GPS equipment were permanently installed and continuous data could be averaged.
Structural and geotechnical mapping 874113 Some results of engineering-geological investigation of the underground in Prague Tunnel under the River VItava Novy. P Proc International Symposium on Large Rock Caverns,
Helsinki, 25-28 August 1986 V1, P367-370. Publ Oxford: Pergamon Press. 1986
See also. 874224, 874263 874117 Geotechnical characterization for underground mining at the Colony shale oil property Brechtel, C E; Hardy, M P; Gulliver, T W: Perry'. H A Proc Symposium on Application of Rock Characterization Techniques in Jline Design, New Orleans, AIarch 1986 P215-
Systematic site investigation was undertaken before driving 224. Publ Littleton: AIAIE, 1986 metro tunnels under the Vltava river, Czechoslovakia. Paleozoic rock encountered included a complex of shales and silt- - Rock structural and mechanical properties data developed in stones plus thickly bedded quartzites and sandstones. geotechnical investigations at the Colony shale oil property Boreholes provided preliminary information. Advance tunnels are presented and compared to geomechanical data developed were driven, and further detailed engineering, geological,rock in the mechanical studies at the Colony Pilot Mine. Similarimechanical and hydrological information acquired. The ties in rock structural quality and rock properties lead to groundwater flow, river water flowing through joints in the reduced levels of uncertainty in mine structural design for difrock massif, was seen to be variable and complex. ferent areas of the property. ~; 1987 Pergamon Journals Ltd. Reproduction not permitted
874114 Landslide appraisal and investigation Haydon, R E V Proc Symposium on Landslides in the South Wales Coalfield,
Proc Symposium on Application of Rock Characterization Techniques in Aline Design, New Orleans, March 1986 P237244. Publ Littleton. AIME. 1986
Polytechnic of Wales, Pontypridd, 1-3 April 1985 P37-44. Publ Pontypridd." Polytechnic oj Wales, 1985
Three stress determinations were made in different locations to explore how the complicated topography of this steeply ridged terrain had influenced the stress directions and distributions in the ridges remaining from the original plateau. Work consisted of drilling vertically' into the roof of the mines at the three locations, examining with televideo borescope to select sites for strain gauge mounting, attaching triaxial gauges, stabilizing and overcoring for on-site measurement of relaxation. Data were analysed by computer to define principal stresses and directions. Correlations were found between the major directions of stress and topographical features as well as presence of major fractures in rocks. An attempt to explain observed phenomena is given with mine design implications.
Site Investigation and Field Observation See also. 874225
874112 Underground valves chamber of the Pecineagu dam Harsulescu, 1 A Proc International Symposium on Large Rock Caverns,
Helsinki, 25-28 August 1986 V1. P307-313. Publ Oxford." Pergamon Press. 1986 This 108m high rockfill dam is situated in a region of metamorphic rocks. Before construction started, engineering geology maps were prepared, trial galleries and shafts excavated, boreholes drilled, in situ tests of rock mechanical properties caried out and seismic surveying undertaken. Following this extensive program to determine dam foundation conditions, no problems arose during excavation of the valve chamber.
Appraisal and investigation of slopes, either those with a history of instability or those where engineering work is to be carried out, are discussed. The various stages of investigation, initial use of available data and photographs, topographic surveying, and site investigation, including core drilling and establishment of the piezometric conditions, are described. Suitable sampling and water pressure measuring techniques and equipment are suggested.
Remote sensing and photographic techniques 874115 Proposal of a remote sensing method for measuring soil moisture of bare soils in the frequency range 100MHz-IGHz Sassi, K; Tabbagh, A Ann Geophys I74, N6B, Dec 1986, P625-638 Soil dielectric constant is the property most sensitive to soil moisture. In the frequency range 100MHz-IGHz sufficient ground penetration is available to usefully measure this parameter. The frequency, angle of incidence, and the polarisation which give the best sensitivity to dielectric permittivity have been analysed using a two layer flat model. The effect of surface roughness has been examined to determine difficulties which can arise in remote measurement of permittivity for calculation of moisture content. 874116 Measuring platform subsidence using GPS satellite surveying Collins, J
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 V2, P335-338. Publ Richardson, Texas: OTC, 1986 The Global Positioning Satellite (GPS) surveying technique has been used over a year to measure the subsidence of offshore oil platforms in the North Sea. Subsidences in the centimetre range can be detected. It is suggested that even higher accuracy could be obtained if GPS equipment were permanently installed and continuous data could be averaged.
Structural and geotechnical mapping 874113 Some results of engineering-geological investigation of the underground in Prague Tunnel under the River VItava Novy. P Proc International Symposium on Large Rock Caverns,
Helsinki, 25-28 August 1986 V1, P367-370. Publ Oxford: Pergamon Press. 1986
See also. 874224, 874263 874117 Geotechnical characterization for underground mining at the Colony shale oil property Brechtel, C E; Hardy, M P; Gulliver, T W: Perry'. H A Proc Symposium on Application of Rock Characterization Techniques in Jline Design, New Orleans, AIarch 1986 P215-
Systematic site investigation was undertaken before driving 224. Publ Littleton: AIAIE, 1986 metro tunnels under the Vltava river, Czechoslovakia. Paleozoic rock encountered included a complex of shales and silt- - Rock structural and mechanical properties data developed in stones plus thickly bedded quartzites and sandstones. geotechnical investigations at the Colony shale oil property Boreholes provided preliminary information. Advance tunnels are presented and compared to geomechanical data developed were driven, and further detailed engineering, geological,rock in the mechanical studies at the Colony Pilot Mine. Similarimechanical and hydrological information acquired. The ties in rock structural quality and rock properties lead to groundwater flow, river water flowing through joints in the reduced levels of uncertainty in mine structural design for difrock massif, was seen to be variable and complex. ferent areas of the property. ~; 1987 Pergamon Journals Ltd. Reproduction not permitted