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Using satellite imagery to detect faults
166A
Planning, geotechnicai and structural mapping See also: 835312 835304 DISCONTINUITY CKAPACf~IZATION FOR UNDERGROUND OPENINGS i~ THE MILWAUKEE WATER POLLUTION ABATEMENT PROGRAM llsley, R C; Costello, M J U:zlergroumd Space, V7, HS, NOV 1982-Jan 1983, P21~-220 Drill logs were used to record the spacing and character of the discontinuities, primarily Joints amd bedding planes: a Field Rock Core Log and a Rock Discontinuity Log. A computerized data bank was used to compile and store the data. 835305 R E C C M ~ D E D SYMBOLS FOR ENGINEERING GEGLOGICAL MAPPING. REPORT BY THE IAEG COMMISSION ON ENGINEerING GEfEDGICAL MAPPING Matula, M Bull Int Assoc Er~ng Geol, N24, Dec 1981,
n27-23~ Four tables of symbols are presented: rock stud soll symbols, h~dr~geological symbols, geomorphological sy~ols, and g e o d ~ m 4 c symbols. 835306 ROCK AND SOIL DESCRI?TION AND CLASSIFICATION FOR ENGIm~m,I~ GEGLOGICAL MAPPING. REPORT BY THE IAEG COMMISSION ON E N G I N ~ I N G GENSLOGICAL MAPPING Matula, M BUll Int Assoc Emgng Geol, N2~, Dec 1981 , F235-274 Proposes a unified method for describing rocks and soils, takimg into account a selected, limited ~-~ber of material and mass properties. 37 refs.
Core recovery, logging, probing, boring and sampling 835307 CONTRIBUTION TO THE MECHANISM OF CORE DISCING Stacey, T R J S AfT Inst Min Metall, V82, Ng, Sel~ 1982, P269-27~ It is postulated that core dlscing initiates as a result of extension strain, which develops in the field of triaxial compressive stress ahead of the hcrahole end. 835308 DRILLING A/~ SAMPLING FROZEN FINE-GRAINED SOILS. TECHNICAL NOTE Hc~'vath, J S; Jc~mson, F W Gec~ech Test J, V6, HI, March 1983, P~0-hl A frozen, moderately plastic clay with a few lenses of shell fragments amd sand was successfully sampled truing a Denlson sampler with a plastic limer.
Photographic techniques 835309 USING SATELLITE n g A G ~
TO DETECT FAULTS
Whlttle S R A; Gutmanis, J C; Shilston, D T Groumd Engmg, V16, NI, Jan 1983, P26-28 Two case hlstcries are used to illustrate the use of LANDSAT images to locate geological faults. It is comcluded that the imagery must be inter-
preted with care and that the results must be verified by reliable 'ground data' obtained by more conventional survey methods. 835310 OBSERVATION OF CRACK D E V E L O ~ N T AROUND AN UNDERGROUND ROCK CHAN2ER BY BO~-STOLE TELEVISION SY~ Kanaori, Y Rock Meeh Rock Engng, V16, N2, June 1983,
P133-1~2 Relaxation phen~nena caused by stress redistribution in a granitic rock as a result of the excavation of a large underground powerhouse were observed using a bcrehole television system. Observations clearly revealed that mlcrocracks had been progressively generated in the wall area. The majority of these cracks were not initiated from the pre-existing mineral filled Joints, but appeared at locations where no Joints had been present earlier. It was also found that the stmmed-up value of the apertures of the microcracks has accounted for more than thirty per cent of the resulting wall displacement toward the chamber. From the measured orientations of the generated cracks it can be concluded that the directions of the principal stress axes rotate during the progress of the excavation°
Geophysical techniques 835311 SUB-SURFACE INVESTIGATION FOR SHALLOW MINE WORKINGS AND CAVITIES BY THE GROUND IMIW/LSE RADAR TECHNIQUE Leggo, P J; Leech, C Ground Engng, VI6, NI, Jan 1983, P20-23 Reports successful attempts to locate buried structures using the ground radar technique: detection of vertical shafts and sub-surface cavities. 835312 SENSITIVITY STUDY OF A GROUND PROBING RADAR SYSTem4. TECHNICAL NOTE Bowders, J J; Lord, A E; Koerner, R M Geotech Test J, VS, N3-~, Sept-Dec 1982,
~96-Ioo Return reflections from ground probing radar (GPR) systems are often impossible to interpret because of reflections from subsurface details other than the desired target. This study has ascertained that the minimum amount of power that can be reflected will cause 8 printable signal, thus making it difficult to distinguish signals from the desired target in a GPR survey. Signal enhancement is suggested as an aid in interpreting GPR signals.
835313 HIGH-FREQVENUY SUBBOTTOM REFLECTION TYPES AND LITHOLOGIC AND PHYSICAL PROPERTIES OF SEDIMENTS Addy, S K; Behrens, E W; Haines, T R Marine Geotechnol, VS, NI, 1982, P27-49 Reports a study to characterize the various reflection types observed in 3.5kHz echograms in a small area of the continental shelf in the Gulf of Mexicoj by their different sedimentary ard physical properties. These include sedimentary structures, grain size distribution parameters, wet bulk density, carbonate content, sediment type, and in situ acoustic velocity. 83531~ GROUND GEOPHYSICAL INVESTIGATIONS OVER THE CA~40 MOLYBDENTTE DEPOSIT Saydam, A S
c~rM Bun, V76, N852, April 1983, ~80-88
Planning, geotechnicai and structural mapping See also: 835312 835304 DISCONTINUITY CKAPACf~IZATION FOR UNDERGROUND OPENINGS i~ THE MILWAUKEE WATER POLLUTION ABATEMENT PROGRAM llsley, R C; Costello, M J U:zlergroumd Space, V7, HS, NOV 1982-Jan 1983, P21~-220 Drill logs were used to record the spacing and character of the discontinuities, primarily Joints amd bedding planes: a Field Rock Core Log and a Rock Discontinuity Log. A computerized data bank was used to compile and store the data. 835305 R E C C M ~ D E D SYMBOLS FOR ENGINEERING GEGLOGICAL MAPPING. REPORT BY THE IAEG COMMISSION ON ENGINEerING GEfEDGICAL MAPPING Matula, M Bull Int Assoc Er~ng Geol, N24, Dec 1981,
n27-23~ Four tables of symbols are presented: rock stud soll symbols, h~dr~geological symbols, geomorphological sy~ols, and g e o d ~ m 4 c symbols. 835306 ROCK AND SOIL DESCRI?TION AND CLASSIFICATION FOR ENGIm~m,I~ GEGLOGICAL MAPPING. REPORT BY THE IAEG COMMISSION ON E N G I N ~ I N G GENSLOGICAL MAPPING Matula, M BUll Int Assoc Emgng Geol, N2~, Dec 1981 , F235-274 Proposes a unified method for describing rocks and soils, takimg into account a selected, limited ~-~ber of material and mass properties. 37 refs.
Core recovery, logging, probing, boring and sampling 835307 CONTRIBUTION TO THE MECHANISM OF CORE DISCING Stacey, T R J S AfT Inst Min Metall, V82, Ng, Sel~ 1982, P269-27~ It is postulated that core dlscing initiates as a result of extension strain, which develops in the field of triaxial compressive stress ahead of the hcrahole end. 835308 DRILLING A/~ SAMPLING FROZEN FINE-GRAINED SOILS. TECHNICAL NOTE Hc~'vath, J S; Jc~mson, F W Gec~ech Test J, V6, HI, March 1983, P~0-hl A frozen, moderately plastic clay with a few lenses of shell fragments amd sand was successfully sampled truing a Denlson sampler with a plastic limer.
Photographic techniques 835309 USING SATELLITE n g A G ~
TO DETECT FAULTS
Whlttle S R A; Gutmanis, J C; Shilston, D T Groumd Engmg, V16, NI, Jan 1983, P26-28 Two case hlstcries are used to illustrate the use of LANDSAT images to locate geological faults. It is comcluded that the imagery must be inter-
preted with care and that the results must be verified by reliable 'ground data' obtained by more conventional survey methods. 835310 OBSERVATION OF CRACK D E V E L O ~ N T AROUND AN UNDERGROUND ROCK CHAN2ER BY BO~-STOLE TELEVISION SY~ Kanaori, Y Rock Meeh Rock Engng, V16, N2, June 1983,
P133-1~2 Relaxation phen~nena caused by stress redistribution in a granitic rock as a result of the excavation of a large underground powerhouse were observed using a bcrehole television system. Observations clearly revealed that mlcrocracks had been progressively generated in the wall area. The majority of these cracks were not initiated from the pre-existing mineral filled Joints, but appeared at locations where no Joints had been present earlier. It was also found that the stmmed-up value of the apertures of the microcracks has accounted for more than thirty per cent of the resulting wall displacement toward the chamber. From the measured orientations of the generated cracks it can be concluded that the directions of the principal stress axes rotate during the progress of the excavation°
Geophysical techniques 835311 SUB-SURFACE INVESTIGATION FOR SHALLOW MINE WORKINGS AND CAVITIES BY THE GROUND IMIW/LSE RADAR TECHNIQUE Leggo, P J; Leech, C Ground Engng, VI6, NI, Jan 1983, P20-23 Reports successful attempts to locate buried structures using the ground radar technique: detection of vertical shafts and sub-surface cavities. 835312 SENSITIVITY STUDY OF A GROUND PROBING RADAR SYSTem4. TECHNICAL NOTE Bowders, J J; Lord, A E; Koerner, R M Geotech Test J, VS, N3-~, Sept-Dec 1982,
~96-Ioo Return reflections from ground probing radar (GPR) systems are often impossible to interpret because of reflections from subsurface details other than the desired target. This study has ascertained that the minimum amount of power that can be reflected will cause 8 printable signal, thus making it difficult to distinguish signals from the desired target in a GPR survey. Signal enhancement is suggested as an aid in interpreting GPR signals.
835313 HIGH-FREQVENUY SUBBOTTOM REFLECTION TYPES AND LITHOLOGIC AND PHYSICAL PROPERTIES OF SEDIMENTS Addy, S K; Behrens, E W; Haines, T R Marine Geotechnol, VS, NI, 1982, P27-49 Reports a study to characterize the various reflection types observed in 3.5kHz echograms in a small area of the continental shelf in the Gulf of Mexicoj by their different sedimentary ard physical properties. These include sedimentary structures, grain size distribution parameters, wet bulk density, carbonate content, sediment type, and in situ acoustic velocity. 83531~ GROUND GEOPHYSICAL INVESTIGATIONS OVER THE CA~40 MOLYBDENTTE DEPOSIT Saydam, A S
c~rM Bun, V76, N852, April 1983, ~80-88