ENGINEERING GEOMORPHOLOGICAL INVESTIGATIONS OF A POSSIBLE LANDSLIDE, KILLIECRANKIE PASS, SCOTLAND
Preliminary site investigations indicated the possible presence of a partially degraded landslide along the proposed route of the A9 Perth-Inverness trunk road improvement through Killiecrankie Pass in Scotland. The steep natural topography and the congested nature of the site, with an existing trunk road and railway line, necessitated the design of relatively deep cuttings through the landslide area. To investigate the ground conditions in the area and to enable designs for the cuttings to be prepared, a programme of site investigations was implemented, consisting primarily of engineering geomorphological mapping, seismic refraction surveys and the excavation of trial trenches and pits. The investigation revealed the presence of a sequence of glacial tills, outwash depositis and ancient mudflow depositis overlying a steeply sloping and undulating rock-head. Spring sapping was identified as the only major mechanism controlling natural slope instability. Preliminary designs for the cutting slopes were proposed incorporating the need for extensive drainage of the slopes cut in the glacial deposits. This paper describes the scope of the investigations carried out, the interpretation of the ground conditions and an outline of the approach adopted towards design of the cut slopes. (Author/TRRL)
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/04812085
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Supplemental Notes:
- This paper was presented at the Annual Regional Meeting of the Engineering Group of the Geological Society held at Birmingham University on 13th-17th September 1982.
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Corporate Authors:
GEOLOGICAL SOCIETY
BURLINGTON HOUSE, PICCADILLY
LONDON, United Kingdom W1V 0JU -
Authors:
- Chaplow, R
- Publication Date: 1983
Media Info
- Features: Figures; Photos;
- Pagination: p. 301-308
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Serial:
- QUARTERLY JOURNAL OF ENGINEERING GEOLOGY
- Volume: 16
- Issue Number: 4
- Publisher: GEOLOGICAL SOCIETY
- ISSN: 0481-2085
Subject/Index Terms
- TRT Terms: Conferences; Cutting (Earthwork); Deposits (Geology); Drainage; Earthwork; Excavations; Geomorphology; Glacial soils; Groundwater; Highway design; Landslides; Mapping; Maps; Refraction; Seismicity; Slope stability; Slopes; Till
- Uncontrolled Terms: Seismic refraction; Site investigation
- Geographic Terms: United Kingdom
- Old TRIS Terms: Deposits; Outwash
- ITRD Terms: 4198: Boulder clay; 8525: Conference; 2812: Cutting (earthworks); 2937: Drainage; 3653: Earthworks; 4055: Geomorphology; 4011: Glacial; 4383: Ground water; 4029: Landslide; 4074: Map; 5722: Site investigation; 2831: Slope (terrain); 5783: Slope stability; 8119: United Kingdom
- Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; I41: General Soil Surveys; I51: Earthworks and Soil Drainage;
Filing Info
- Accession Number: 00382479
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, TRIS
- Created Date: Apr 30 1984 12:00AM