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GEO Report No. 92
Report No. : GEO Report No. 92

Report Title : Investigation of Some Selected Landslide Incidents in 1997 (Volume 6) (1999), 181 p.

Author : Halcrow Asia Partnership Ltd.

Abstract

This GEO Report consists of four Landslide Study Reports on the investigation of selected slope failures that occurred in 1997. The investigations were carried out by Halcrow Asia Partnership Ltd (HAP) for the Geotechnical Engineering Office as part of the 1997 Landslip Investigation Consultancy.

Section 1 of this report presents the findings of a detailed study of two landslides which occurred adjacent to Nos. 5 and 7 Keng Hau Road, Sha Tin on 4 June 1997 and 2 July 1997. The landslides destroyed a terraced garden area and partly undermined No. 5 Keng Hau Road. No fatalities or injuries were reported.

Section 2 of this report presents the findings of a detailed study of a landslide (GEO Incident No. MW97/7/66) which occurred on 2 July1997 on a cut slope located adjacent to Shing Mun Tunnel Road, Route 5, Tai Wai. Landslide debris accumulated at the toe of the slope. No fatalities or injuries were reported. The landslide was located within a section of the cut slope that had exhibited previous instability and which shows evidence of possible deep-seated instability.

Section 3 of this report presents the findings of a detailed study of two landslides which affected a man-made slope behind house No. 142/143 in Ha Wo Che Village, Shatin. An initial minor landslide occurred on 2 July 1997 which was followed by a main landslide on 3 July 1997. The landslide debris affected the residential property but no fatalities or injuries were reported.

Section 4 of this report presents the findings of a detailed study of a landslide located on a man-made slope south of Ville de Cascade, Fo Tan, Shatin. On 3 July 1997 a minor failure (GEO Incident No. ME97/7/42) occurred near the crest of the man-made slope. Debris from the failure remained on the slope and no fatalities or injuries were reported. Following clearance of vegetation from the slope an extensive area of landsliding was identified, that extended the full height of the slope, about 27 m, and was about 50 m wide.


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