Geotechnical Survey Research Articles

Discussion on ‘Engineering geomorphological investigations of a possible landslide, Killiecrankie Pass, Scotland’ by Robert Chaplow

A. C. A llen writes: Chaplow comments in his summary and introduction on previous conventional site investigations. The Report of the Geotechnical Survey commissioned by the Scottish Development Department from Allen, Gordon & Co., Consulting Civil Engineers, in December 1972 was issued in September 1973. It dealt with all geotechnical aspects of the full length of the road improvement in the Pass and in relation to the site investigation it covered all stages from deciding upon what should be undertaken, issuing tender documents, recommending the contractor, supervising the investigation and interpreting the report received. From considering four choices of route through the Pass, the Report recommended the adoption of a dual carriageway in cut and on embankment, which was detailed on an alignment close to one of the four choices. Possibilities of tunnel and elevated roadway solutions had been considered and rejected on account of excessive cost. The landslide with a recognised poorly-developed surface drainage system, to which Chaplow refers, affects a length of about 60 m in the two-kilometre-long Pass and it was identified as part of a 600 m long transverse feature between the top of the east side of the Pass and the railway at the bottom, which comprised original undisturbed glacial deposits and slipped reconstituted deposits lying in less consolidated form over, and often between, the ridges of the original glacial deposits. With provision of reasonable drainage, it was considered that the feature would not present any great difficulty during construction or significant risk thereafter, which corresponds.

A geophysical survey of the Crouch/Roach river system in south Essex with special reference to buried channels

Summary A detailed geological and geotechnical survey was carried out in connection with the future development of the South Essex area for a possible third London airport on Maplin Sands. Information on the position of the old buried channels of the Crouch/Roach river system was obtained by carrying out a continuous seismic profiling survey along the present channels of the two rivers. The survey provided information on the depth to the London Clay surface, the thickness and depth of the alluvial deposits, the variation of lithology within these deposits, and the position of some of the buried channels.

841285 Geotechnical survey for the catchment tunnel of Edolo's HPS, Brescia (In Italian) : Astolfi, G; Moro, T Gallerie Grandi Opere SotterraneeV6, N14, 1982, P31–40

841285 Geotechnical survey for the catchment tunnel of Edolo's HPS, Brescia (In Italian) : Astolfi, G; Moro, T Gallerie Grandi Opere SotterraneeV6, N14, 1982, P31–40

Regional geological and geotechnical survey of South Essex

A comprehensive regional geological and geotechnical survey of an area of about 450 sq. km between the Rivers Crouch and Roach in South Essex has been carried out for the Department of the Environment to guide planners in the then proposed urban and industrial development to accompany construction of a third London airport at Maplin. Geological mapping, borehole, pit, trench, core penetrometer and geophysical investgations in the field were supported by laboratory studies of the mineralogy, micropalaeontology and geotechnical characteristics of the superficial, drift and Tertiary deposits of the area. These studies enable geotechnical groups and units to be identified and various presentations of the three dimensional engineering geology, principally in maps and sections at 1∶15,000 scale, have been produced, both manually and by computer. The potential engineering problems are associated with landslips in London Clay, variable thicknesses and character of Alluvium and metastability of loessic “Brickearth”. An engineering planning map divides the area into zones of engineering significance.

The harbour industrial area of Dunkirk. The geotechnical survey and main harbour substructures. In French. 2F : BERGIN, JP JANOUEIX, P MILLOT, J PROC. 2ND INT. CONGRESS LAEG, SAO PAULO, PAPER III-32, V1, 1974, 6P

The harbour industrial area of Dunkirk. The geotechnical survey and main harbour substructures. In French. 2F : BERGIN, JP JANOUEIX, P MILLOT, J PROC. 2ND INT. CONGRESS LAEG, SAO PAULO, PAPER III-32, V1, 1974, 6P

Mining at great depth from the point of view of geotechnical surveys : KWASNIEWSKI, M In Polish. 8F, 4T, 40R. PRZEGL. GORN, V29, N12, 1973, P511–519

Mining at great depth from the point of view of geotechnical surveys : KWASNIEWSKI, M In Polish. 8F, 4T, 40R. PRZEGL. GORN, V29, N12, 1973, P511–519

Geotechnical Surveys, Tests and Measurements on the West Side of Ena Tunnel

Geotechnical surveys in the area of the Ena Tunnel have being carried out by Japan Highway Public Corporation from 1965. In the area of Nakatsugawa, the west side of the Ena Tunnel, 5 boring works were completed, and several physical characters of boring cores and bore holes were tested and measured.From their resul ts, the geotechnical section of the west side of this tunnel is drawn. Considering difficulty of boring works and observation of boring cores, it seemed that geotechnical conditions in this area is not desirable for tunnel work beyond expection