An Update Introduction MBIE and the New Zealand Geotechnical Society have produced six Earthquake Geotechnical Engineering Guideline Modules covering a range of geotechnical topics. However, these do not specifically address slope stability. In 2019 the NZGS management committee agreed to start work on a seventh…
Below are a series of questions put to Laurie Wesley by Rafael Iglesies, with Laurie’s responses. The Editors thank Laurie for sharing these thoughts and insights, they make interesting reading! 1. In many parts of Chile we can easily find high-rise residual soil slopes right…
This paper was prepared for the NZGS 2020 Symposium and will be presented at the rescheduled meeting ABSTRACT Sumner Road between Lyttelton to Evans Pass was severely affected by rockfall as a result of the 2010-2011 Canterbury Earthquake Sequence. Approximately 2 km of Sumner Road…
Prepared for the 69th Highway Geology Symposium, September, 2018 ABSTRACT The November 2016 M7.8 Kaikoura earthquake resulted in excess of 40 landslides that directly impacted the key road and rail corridor on New Zealand’s South Island. Within two months, the New Zealand Government formed the…
Abstract Christchurch City and its surrounds experienced a series of damaging earthquakes in 2010 and 2011. During the 22 February 2011 earthquake, extensive cracking and movement of the ground occurred in some areas of the Port Hills. We have used a geological modelling package, Leapfrog3D®,…
Abstract Counterfort drains provide a method of improving slope stability by controlling groundwater levels via subsurface drainage; they can provide significant improvement to stability at moderate cost. Published information on the design, initial effectiveness and, importantly, the long-term performance of such drainage is limited, particularly…
Abstract Loess and loess-derived soils cover much of Canterbury, from the foothills of the Southern Alps to the Pacific Coast. These soils are of variable thickness, ranging from several metres up to 40m at the base of slopes on Banks Peninsula. In many areas primary,…
