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| Ministry of Transportation |
Lytton, BC |
Carried out stability investigation and design of stabilization measures for two cuts in volcanic rock on Highway 1 at Jackass Bluffs, between Boston Bar and Lytton. The study objectives were to review past stability conditions based on rockfall history and previous stabilization work, carry out a field investigation, determine the types and locations of the stabilization measures, and prepare photographic sheets showing the location of the various stabilization measures in a format that was incorporated in standard MoT construction contracts.
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| SNC Lavalin |
Castlegar, BC |
Geotechnical design representative for the Brilliant Dam upgrade design-build type project. Reviewed blast designs and evaluated rock fall hazards, together with designs of rock support for cut slopes, powerhouse foundations, and tunnels ranging from 4m to 12m spans. Field work involved geologic mapping, determination of rock slope support, quality assurance and monitoring of progress.
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| Arizona Department of Transportation |
Salt River, Arizona |
Inspected emergency scaling and blasting works on a rock landslide beside the I-60 near MP295, a two lane highway between Globe and Phoenix. The steep landslide is approximately 200 feet high and 300 feet long comprising of weathered and sheared igneous rock. . The scaling activities allowed frequent road openings for traffic.
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| Maunsell Geotechnical Services |
Hong Kong |
Supervised field investigation (four months) under active traffic conditions and carried out design (eight months) of the Tuen Mun highway widening project sited in weathered granites located on the western side of the N.T., Hong Kong. The major hazards on site include boulder falls from the natural slopes, minor rockfalls from the cut slopes and major block slides on the sheeting joints. The main purpose of the field investigation was to evaluate the geometry and condition of discontinuities. This involved geological mapping and logging granite core showing the full range of weathering grades. In-situ testing includes the installation of vibrating wire peizometers, permeability testing using constant and falling head procedures and impression packer testing to orientate core discontinuities. Downhole observation tools including both high resolution video and acoustic televiewer imaging techniques were used to allow clear evaluation of fracture characteristics. The design work involved the determination of major block geometries behind the face for potential stabilization requirements consisting of cable anchors, mesh, shotcrete and untensioned pattern bolts.
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