Tragedi gelinciran tanah Taman Hillview

Abstract

The November Taman Hillview landslide destroyed a bungalow house and eight live were lost. The landslide was a complex landslide, i.e. a combination of rotation at the head and sliding in the middle which was followed by a flow occurrence at the toe. The landslide was up to 200m and 50 m at the maximum width, involving approximately 25,000 cubic metre of disturbed slope material. Even though continuous heavy rain triggered the sliding, various other important factors that contributed to the event were its location within an old landslide, surfacial material prone to failure, geological lineament that facilitated sliding, shape of old landslide that aided the accumulation of ground water, leveling and terracing at the upper part of the landslide area, an an old damaged rubble wall that encouraged the concentration of surface water. The tragedy was a recurrence of and old landslide that could have been avoided if a detailed geohazard risk study had been undertaken prior to the construction of the affected residence.