Guide to core logging for rock engineering

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795206 INVESTIGATION OF A DAMSITE UTILIZI~ DRILLHOLE, DOWN-H(K~ GEOPHYSICAL AND SURFACE GEOPHYSICAL DATA Johnson, R B; John-on, L A Bull Ass E ~ Geol, VIS, N3, 1978, P'285-2~ The Imx~osed site of an earth dam for the Bureau of Reclamatlon's Nebraska Mid-S~ate Project presents a complex fouxrlation problem involvimg alluvial fill in a buried ch~_r~_el cut in similar sediments of Tertiary age. Three drill holes provided control of stratigraphy, material types and ~nit thicknesses. Electric surl g~mm,-rsy logs were run to obtain geophysical data for the materials encountered. Surface geophysics was employed to determine the lateral extent, chamges in materials and thickness, ard chamnel eomflg~atlon of the units noted in the drill-hole amd geophysical log data. GEGLOGICAL RECONNAISANCE. T U N I N G MINING ROCK SUPPORT P O ~ PLANT C O N S I ~ O N . CONTRIBUTIONS TO THE 26TH GEOMECHANICAL CC~QUIL~, AUSTRIAN SOCIETY FOR GEC~ECHANICS, S~T~URG, -

-

z3-z~, OCT Z977 Muller, L (~U.tor) Rock Mech, S u ~ I 7, 1978, 2691= 795208 ENGINeeRING GEGLOGICAL INVESTIGATIONS FOR TUNNEL LOCATION AND DESIGN Prebble, W M Paper presented to symposium on Tumnellimg in New Zealand, Hamilton, 1977. NZIE Proc Tech Grps, V3, N3 (G), P2.1-2.11 A review of New Zealand practice, emphasising the problems of diversity of rock anl soil structure and of high tectonic activity. 31 refs. 795209 INVEBTIGATION INTO THE USE OF STRAIN ROSETTES FOR THE M E A S U R ~ OF PROPAGATING CYCLIC STRAINS squire, V A J Glaciol, V20, E~3, 1978, P~25-431 795zI0 PRODUCU~ON A~D T~.STING OF S O ~ RETAINING Sm~IN-

MEASURING PILES (IN RUSSIAN) Day, Joy, G D; Gir~burg, L K Transp Stroit, NS, May 1978, I%'5

Planning, geotechnical and structural mapping

795211 ENGINeeRING RESOURCE UNIT APPROACH TO ENGINE~ING LAND-USE PLANNING King, M J Bull Ass Emgng Geol, VIS, N3, 1978, P253-267 The approach combines the ~hysical and engineering properties of lamdfcrm, unconsolidated surficial materials and bedrock into simgle mappable units to give a three ~,~usional perspective of an area. The paper describes the method anl discUsses how it rosy be applied to engineering land use studies.

795212 ENGINEerING - GEGLOGIC EXPECTATION ~C~EL AS A BASIS FOR THE PROGNOSIS IN UNDERGROUND CONS~RU~ION Helfrich, H K ROck Meah, SUppl 7, 1978, P13-26 (paper to 26th Gecmechanical Colloquium, Austrian Society for Gecmechanlcs, Salzburg, 13-I~ Oct 1977) Presents a scheme for plan~ing investigations of emgineering geology with a via~ to m ~ m ~ sing the deviation between the @.-~)%echmical pro&,nosis ~ actual fimdlngs during excavs~ion. The i m ~ e of defining a step-wise investigation procedure, axrl of evaluating the level of sufficiency of the methods used, is stressed. 795213 FEASIBILITY OF STORING RADIOACTIVE WASTES IN CGLLMBIA RIVER BASALTS DeJu~ R A Prec lat Int~rr~%ional Sympositmn on Storage in Excavated Rock Caret-- (Rockstore 77), StOCkholm, 5-8 sept 1977, V3, P747-753. Publ Oxford: Pergamon Press, 1978 • S 1 ~ i s e s the findings to date from this site feasibility study, including charactarisation of the basalts ard their stratification, hydrologic tests, ard assessment of seismic stability of the Columbia River Basin.

Core recovery, logging, probing, boring and sampling see also: 795151, 785218 795214 NGMOGRAPH FOR D ~ GE(EDGIC STRUCTURE IN HORIZORTAL DRILL HGLES AND TUNNELS Miller, C H; Msgmer, J E BUll Ass EmgDg Geol, VlS, N4, 1978, F383-386 Gives a homograph devised %o aid in %.he computation of certain u:~ergrourd geologlc-structure problems. 1% employs four factors: (I) horizontel length of cored or mined intervals, (2) horizontal amgle between the core hole or tunnel 8nl direction of dip, ~ ) t r ~ dip, and (4) true bed thickness. Amy one of the factors may be determined if the other three are kmownj and the lengths can be in amy unit. 795215 GUIDE TO CGRE LOGGING FOR ROCK ENGINEERING Core Logging Cmmmittee, South Africa Section, AEG Bull Ass Emgng Geol, VIS, N3, 1978, P295-328 A guide for %he logging of borehole core for rock emgineering purposes is proposed. Only those parameters which are commonly of interest in rock engimeering are described. @1-1~tative descriptions deperding only on visual inspectiom and simple mechanical field tests are ~u~d. Pr~,~y core descriptions include descriptions of colour I weathering a fabric, discontinuity surface spacing, hardness, rock ~ m e and stratigraphic horizon. This is followed by a descrip-

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tion of the discontiu-,ity surfaces including their type, separation; fracture filling, roughness and orientation. If significant, an additional description of the mature of the fracture filling including ~oisture, colour, consistency or hardness, soil cr rock type ard origin is added. The sigmificance of each of these parameters with respect tO e~gineering behaviour is discussed and stanlard descriptive terms defined. Reccmmerdations are m~de for the hardli~6 and storage of rock cores. Some useful techniques for the logging of core are discussed.

795216 REQUIREMENTS OF GEOLOGICAL STUDIES FOR U N D O SEA TUNNELS Gromhaug~ A Rock Mech, Suppl 7, P27-40 (paper to 26th Gecmechanlcal Colloquium; Austrian Society for Gecm~oahasies, Salzburg, 13-1~ Oct 1977) Relates to the ~oJected Vardo road tunnel in northern Norway. Suitable methods far assessing bedrock depth; mapping rock stability ani permeability, and detecting gaps in the rock surface, are discussed. The d e v e l o p m e n t o f a drilling ~rogramme for these investigations is considereal; including vertical, horizontal, and inclined drillings.

Geophysical techniques 795217 SEISMIC M E T E D FOR D ~ P FOUNDATION INVESTIGATION Groumd Emgr~, VI2, N3, April 1979, P19-20 Briefly describes the Mini-SOSIE system of seismic reflection plottimg usimg mechanical r ~ m , ~ ener~r sources amd a travelling mir~computer to l~oduce the seismogram. The technique is applicable in the lO-lOOm range. COAL - E0W TO EXPLORE AR) EVALUATE THE OLD NEW ENERGY MINERAL Wyllie; R J world Min, V31, NI3, Dec 1978, P~4-59 A review of papers f r ~ the 2nl International Coal Exploration Symposium, held in De~er, Colorado, in October 1978. Topics covered include: in-seam seismic exploration, ~emlni~g investigations with acoustic anl shallow seismic methods, hi6h frequency seismlcs, use of radar, drill-hole iOgglmg, the sonic log; dip~ e r logging and other new ioggiDg tools. 795219 ~'~'~:CTS OF BOUNDARY FRICTION ON THE PROPAGATION OF ELASTIC WAVES Miller, R K Bull S e i ~ l Soc Am, V68, ~ , A~g 1978,

795221 I T ~ I V E ~ FOR D ~ l X ~ D ~ DEteRMINATION F R ~ H ~ C T I O N DATA FOR AN U ~ I-~ERFACE Singh, S Geophys Prospect, V26, N2, June 1978, P303-311 Describes an iterative method which it is claimed reduces the h - ~ i ~ time and labour by about half, compared with the conventiomal method of delay times. The method is tested with synthetic data and some field traverses. 7 ~ 2 2 2 RADAR PROPAGATION IN ROCK SALT Umte~erger, R R G e o ~ s Prospect, V26, N2, June 1978, P312-

328 Four r ~ a r systems at three d=4ffere~ frequencies are described which are useful in I~obi~g into salt f ~ f i n d i ~ information of interest to miners. Ranges in salt to (a) the edge of a

salt d~e, (b) the to~ ~ the salt d ~ ,

(c)

bc~eholes in salt, or (d) faults cr hazards ahead of minIDg man be determined using one or more of t h e s e r-d-r systems. R ~ - - wave velocities in salt a r e d e t e r m i n e d by radar probimg through pillars of known length, and then used to determine reties in salt to timed radar reflections. Radar l~obing results are ahcwn obtained in dlffere~ salt mines probi~ u~wards and downwards. Enclosed areas in the mine are the best radar station locations to probe into salt as air reverberstion of r ~ - ~ emmrgy is ahcm~ened. Auth.

795223 RADAR DETECTION OF B O G G L E S IN ADVANCE OF Tarantolo, P J; Unterber~er, R R Geo!~ys Prospec~ V26; N2, June 1978, P3~9"

382 Investigates theoretically the detection ug bcreholes in rock salt usin6 two different radsr systems, one with a peak power of 20EN at 230~z, and the other with a peak power of 3W at ~0MHz. 795224 ELECTRICAL DC RESISTIVITY SOU~DIh~S WITH L O ~ PROFILES ON ROCK G L A C I S A ~ MC~AI~S IN THE ALPS ~F S W ~ Fisch, W; Fisah, W; ~-eberli, W Z Gle%sohes~k~zle Gls~is/4~ol, VI3, NI-2, 1977;

F2~9-~6o

Presentation and interpretation of data

795225 ~ OF ~

OF G R O t ~ m W ~ R~A~L~TY

IZVZL O~ T ~ RESULTS T~S

waXao~ P G Analyses the ~opagation of seismic waves in Is~ered s y ~ where the boundaries are perfectly bomded, perfectly lubricated or stress free, such as a dormant fault smmface in shallow earth. 795220 REFLECTION AND P~RACTION OF ~ WAVES IN PRESENCE OF SLIP AND FRICTION Chez, E L~ Dundurs, J; CcmDinou, M Bull S e i ~ l Soc Am, V68, ~ , AUg 1978,

P~-1012

ASs ~

~mol, V~5, N3, 1978, P329"336

The head f a ~ f ~ ~rehole l ~ i l i ~ tests eo~u~ted b e l ~ the ~ o ~ table c : ~ be determined u~less the d e ~ to ~he wster table is known. U s e o f inc~reet water levels can cause both ~ e ~ i ~ e s and , , ~ e ~ i m a t e s af per,~ability of two or ~ e c~lers of roset t e . To eliminate these e~rars, w ~ e r levels obtained d ~ i ~ dxilli~g should not be u s ~ in computi~ head factors. Ws~er levels ahould be