In conjunction with CMSA, Ausenco conducted a risk study of land instability and geotechnical aspects associated with the mine.
The survey included aerial photographic and satellite image interpretation to identify geomorphologic processes and landslide hazards. Vulnerability of people, buildings and equipment was identified and the risk was estimated qualitatively.
A geotechnical zoning of Cerro Matoso was prepared.
Ausenco proposed several treatment options to control the identified risks. Monitoring technologies were considered including: slope stability radar (SSR), ground-base Lidar, a seismograph and accelerograph network, and image analysis.
A regulation document for ground control was prepared under the standards of risk administration of CMSA and BHP Billiton. This document describes the geotechnical risk management process including hazard identification, consequence analysis, risk estimation, risk assessment, treatment plan and monitoring alternatives.
Ausenco’s scope of services included: