Soil freezing and retaining structures for a deep excavation below the water table (in Italian)

Soil freezing and retaining structures for a deep excavation below the water table (in Italian)

i02~ Grouting See also: 805265 805249 EXPERI~NTAL CRITERIA FOR DESIGN Ak-D CONTROL 0~ GROUTING IN SANDY-GRAVEIIY SOILS To~naghl, R In: Tunmelling '...

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i02~

Grouting See also:

805265

805249 EXPERI~NTAL CRITERIA FOR DESIGN Ak-D CONTROL 0~ GROUTING IN SANDY-GRAVEIIY SOILS To~naghl, R In: Tunmelling '79, Proceedings of the 2nd Internstional Symposium, London, 12-16 March 1979:0 I~i-78. Publ London: IMM, 1.979

Soil stabilisation 805250 sOIL REINFORC~4EN~ J~hn~ N W M Civil Engng, London, Oct 1979, P47-53 Discusses some of the papers from the Inter~ational Conference on Soil Re.~nforcement held in Par~s, March 197 9. Topics covered incl~de reinforced earth, soil r.~illng, rednferc~ embam~m:ents and clay walls, design methods, vibratory techniques°

Soil compaction 805251 DYNAMIC COMPACTION OF GRANULAR SOILS Leons~Is, G A; Cutter, W A; Holtz, R D J Geotech Engng Div ASCE, V106, NGTI, Jan

i98o, ~5-4~ D~e compaction was used to improve foundations beneath a large ~rehouse. SPT_ and cone pemetration tests were made before and after compaction to determine the level of improvement. Field measurements were also made usirg a seismograph to establish the level of vibration produced by each tamp at various distances away from the impact. It was concluded that the depth of significant influerme using falling weights as a techr~que of d ~ c compaction is about half that prevd~csly considered atta]r~ble.

805252 SURFICIAL COMPACTION OF SAND IN SQUARE PITS U S I ~ FOAM I~ROI~ELLAITI 1. TECHNICAL NOTE Agarwal, K B; Siva Ram, B soil~ Found~ VIg, N3, Sept 1979, P77-83

Freezing 805253 SOIL FREEZING AND RETAINING STRUC%~01KES FOR A DF~P EXCAVATION BF~OW ~ WATER TABLE (YN

~TAL~A~) Berne, C; Fi~rsvanti, G; Russo, R Riv Ital Geotec, V13, NI, Jan-March 1979, P19-36 805254 FREEZING OF SOILS DURING EXCAVATION OF THE FOUNDATION PIT AT CONSTRUCTION SITE OF THE RAF PLANT Yakovlev, V N Soil Mc~h Fourgl Engng, V15, N4, July-At~ 1978,

F236-2b-O

Site Investigation and Field Observation See also: 805125 8o5255 ~ P L O ~ T I O ~ AHEAD OF ~

FACE IN ~

COAL

~

~ N I ~ I~USU~Y (IN GERmaN) Haupt, W; Pollmanj H; Walther, C Gl1?ekattf-fo~sehtnl~sh, V40, NS, Oct 1979, PI87-189 Briefly reviews techniques used in the Ruhr, iz2ludi~g geometric ar~vsis of discontinuities, boring, geophysical methods, mathematic~1 techniques, and cartogral~ic analysis. 805256 UNDERGROUND EXPLORATION OF DEPOSITS (IN GERMAN A ~ ~NGI IsH) Gluckauf, VIIS, N!6, 23 Aug ]97.9, P795-828 (English version PB6h-384) Contains papers from a symposium of the 3teinkohlenbergbauverein, held ir Bocht~n, A~rtl 1979. Topics covered include: exploreticn ahead of the face, core berir~ methods, in-sea~ drilling, lor~.ole horizonta2, core drilling, gscphysieal bcrehole measurements, seismic methods (reflection, in-seam transmission). 805257 FACTOR ANALYSIS IN G E ~ C A ! . EXPLORATION (IN ITALIAN) Crespel!ani, T; Lol, A Riv Ital Geotec, VI3, N3~ July-Sept 1979, P176-193 In this paper factar arslysls is introduced arKl the reasons for its conv~.nlence and advauta~{es are discUssed by considering an illustrative exsmple of application to a m~lltivarlate data collection. Attention is given to the possibility of gainirg~ information far an optimal use of further izvestigstion efforts saxl to the 'stabillty' of the factor moflel, referred to the r~nber of starting data. 805258 N[S.~JRICAI.PROCFJ):~E FOR IDENTIFICATION OF SOIL PARA~2~,~S (IN ITALIAN) Gloda 3 G Riv Ital Geotec, V13, N2, Alril-Jttu* 1979, ~-lo5 The ~ u r e

requires,

a seT. o f i..~ s l t u

me~sure-

merits (ie displacements, pore pressures, ate) performed in the situatio~ similar to the one. that has to be analyzed. '~he procedure is based on the use of a finite element l~o~am, capable of simulating the probl~m in hand, and of the Simplex minimlzation algorithm. The S~ mp~ ex method allows correction of the soil psramet~ v~lues input to the program llntil the nmnerieal results approximate w~th a chosen accuracy the in situ meam~ements. The proposed procedure is spplled to the identification of the permeability coefficients of an anisotropic clay deposit. &uth.