ABSTRACT

This chapter presents some case studies of selected notable landslides incidents and the key findings from the post-failure investigations. Notable landslides have occurred at construction sites involving slope works in Hong Kong. The buildability of slope designs should be thoroughly considered by the designers at the option assessment stage as well as the detailed design stage to avoid conditions whereby slopes are rendered particularly vulnerable to failure during construction. The temporary drainage system should be maintained and cleared of any blockage on a regular basis to ensure that the drains remain functional especially at times of heavy rainfall. Consideration should be given to requiring the contractor to construct part of the permanent drainage measures at an early stage of the works to enhance the drainage provision during construction. Any discovery of non-compliances of the site works by the resident site staff should be reported to the designer/project office as soon as possible.