18A

811205 IMPACT PENETRATION OF SAND. ~ C A L NOTE Knight. D G Can Geotech J. Vi7. NI. Feb 1980. P127-131

Describes an instrumented impact penetrcmeter sult~le for in sltu tes~clng, and reports lab tests on dry sazds.

811206 RULES FOR TKE GEOTECHNYCAL RECONNAISSANCE OF ~SSIBLE SITES (IN ~ )

Magnan, J P; ~u, J P; Pelgna~, M Bull L i a i s o n .Lab FOnts Chaussees, NIO~, J~AIy-

Aug i~80, P5-12

Distl~ulahes a~ examines in de*~all fc~r levels of site Inves~igatlon: Prellmi~ery survey of sites a~i soils, genera l gec~e~h_-~cal ir~esti- gation, detailed geotec}L~cal investigation, and s~eciflc geotechnical studies.

811207 MONITORIN~ OF DEFORMATIONS ASSOCIATED WITH EXCAVATION. MORTTORIR~ OF D~TIORS W~ SPECIAL REFACE TO OPEN EXCAVATIONS

Jemnlmgs~ J E; Steffen. O M Proc ~th Compress Irr~n'na~ioral Society for Rock Mechanics, Montreux, 2-8 Sept i~79, Vol 3, F383-395. ~i Rotterdam, A A E~Ikem,

Discusses: objects of monlt~ring, basic deforma- tion mechanisms, models of failure far open- topped excavations, monltcring of movements in unler~rourd excavations, means of measuring deformations, practical case studies.

Planning, geotechnical and structural mapping

811~08 ~ ~ [ ~ - ONE SYST~ Civil Fa~ng, Lo~on, March 1980, ~6A~-6~

Describes a micrOproeesec~'-based sona~ system which generates plan view images of the sea flour.

8i12o9 CHANNEL WAVE MAPPlN~ OF COAL SEAMS IN THE b%'ITED KINGDOM

Mason, I M; Buchanan, D J; Booe~, A K GeOphysics, V~, NT, July 1980, PI131-I143

Channel wave selsmol~ is an u~rour~l adaption of surface reflection selamol~gy, which relies on the fact that coal se~ms g~i~e seismic energy. Coal in situ forms a nmt1~ra/ 2-dimen- s iona l waveguide, with a dispersion which is overcome in this study by a 1-dimensional ~race by trace farm freq~er~y domain migration. The technique was used to map small ~eolc~ic faults in a coal seam in a UK coal mine (Pye Hill Colliery).

Core recovery, logging, probing, boring and sampling

811210 SA~PLIN~ AND IN-SITU DENSITY OF A SATURATED GRAVEL DEPOSIT

Vallee, R P; Skryness, R S Geotech Test J, V2, N3, Sept 1979, P136-142

Reports the sampling an~ ~ i o n ~ee~i~ of frozen soil taken from ~he w a l l of an explora- tory ab~t ~ by grc~m~ freeair~ techniques.

811211 EFFECTS OF Tz~xAIN ON GRAVITY BOR~ DATA Hearst. J R; SchmoMer. J w; Carlson. R G Seo~ysics, V~, ~, Feb i980, F23~-~3

The effect of terrain was studied as a function of depth in the well, terrain el=v=~ion, terrain inclination ard radial d ~ m n c e to the ~e~rain feature.

Photographic techniques

811212 ANALYSIS OF DIFFICULTIES E N ~ IN ~ING UP HTG~AY FACILITTES IN A ~0URTAINOUS R~HON - aIO ~A VA~A~ (PERU) (I. F~r~)

Richard, R Bull Liaison Lab Fonts Chaussees, NIt6, July-

Aug 1980, P13"l~

Reds the use of ~hoto Inter!~retation for ~he assessment of potential slope stability problems, particular note being made of faul~, sli~, ar~ ex~stlr~ or old ~ater-c~mL--ses.

81~13 G~m.OO~CAL MAm~ ~ ~U~STS a~D W ~ D ~ Y OF Tm~ stms'maTt~ C~ m~)

Scanvic, J Y BUll Liaison Lab Fonts Chaussees. NI0@. July-

Aug 1980, F16-19

The article examAnes (1) geol~Ical mapplr~ in equatorial fc~-ests usir~ classical aerial l~h~o- ~ra~s and radar ~ra~hs in clou~ wee%her, (2) prospecting for ~ater in arid regions on the basis of rook fractUre ~hot~Ta~ studies.

811214 DEVELOPMEI~ OF A METHOD TO DETECT GEOLOGIC FAULTS AND OTHER LINEAR FEATURES FROM LANDSAT IMAGES

Burdick, R D; Speirer, R A um~ ~ 8~13, 198o, 7~P

Describes a detection method develol~ fcr use with a minlccm;~ter, ccmprisl~ a suite of Programs that scans an image fc~ all potential lineaments. From this !~ally e~alyze~ da~a, the final lineaments are Plcke~ by ~er routine. The method was field tested, and results irdicated good agreement between ccmputec-picked lineaments a~i ~round features.

Avail: US~M, hSO0 Forbes Av~, Plttsb~n'~h, Pa, i~2i3 USA

Geophysical techniques

See also: 811088

811215 PROBIN~ CONCRETE WITH RADIO WAVES Laine. E F; Dines. K A; Okadal J T J C~-~tech Em~Div ASCE. V~0~. NGY7. July

1960, ~59-766

Relxwts the use of a high freql:ency e lec t -o - ma~Ic ~ o b i n g tecbz~q~e t o assess ~e intq* rity of a section of a cor~rete cOffee,am seal .

811216 SEISMIC REFLECTION TECHNTOUES FOR COAL ~ T ! O N

Harman. P G; R1xtter. H ~P Tech Bull, V23, N2, Nov 1979, .~-I0

A new high resolution selsmAc reflect, ion technique Is d e a ~ r ~ ~ c~ed with ear- 11~ seismic reflection work.