Paradise Gorge – Rock Removal in Columnar Dolerite

Joint Presentation with Geological Society of Australia

Andrew Tyson and Clint Scott

During the inspection of previous stability issues along the Paradise Gorge section of the Tasman Highway near Orford, high concern boulders were observed situated above the roadway. A rapid response closure of the road and remedial works were undertaken. Detailed risk assessments of individual boulders and overall slope stability were performed and mitigation measures employed to reduce risk to an acceptable level. Mitigation measures included removal of boulders, hydraulic removal of scree, removal of trees, re-vegetation, full-time monitoring of slope movement and catch fence installation.

About the speakers

Andrew Tyson

Andrew Tyson is a geologist with over 15 years’ experience in geotechnical consulting in the mining and civil sectors. His involvement in a wide range of projects within these sectors has given him a broad cross-discipline skill base.

He has planned and carried out a large number of civil investigations; specialising in slope stability, along with site classifications and foundations across a wide range of sites.

His mining experience includes both underground and open-pit work, ranging from geotechnical coverage to drilling supervision to offsite data analysis.

Clint Scott Pitt & Sherry

Clint Scott has over 20 years’ experience in the planning and supervision of geotechnical investigations, development of geotechnical models and design of various underground and surface excavations and works. His experience extends to both mining and civil applications and has worked on projects in Africa, SE Asia, Middle East, Europe, South America and Australia. His expertise includes geotechnical assessment of surface earth works and stability issues including earth dams, landslides, foundation investigations, rock and soil slope stability and blasting issues. He has also undertaken assessments of various underground mining methods ranging from small cut-and-fill to sub-level and block caving operations. His geotechnical assessment of shaft excavations includes surface collar works, stability assessment, support requirements and pre-grouting for various excavation methods.

Engineers Australia members participating in AGS technical sessions can record attendance on their personal CPD logs. Members should refer to Engineers Australia CPD policy for details on CPD types, requirements and auditing guidelines.