Conducting a Raisebore Examination

The client had engaged MineGeoTech to undertake the geotechnical design assessment for a 4.5m diameter ventilation raisebore between 1045m and 1208m below surface to assist development of a new area the mine. As a means of validating the assessment a LiDAR scan was recommended.

Understanding the performance of the raise through multiple lithological units would assess the requirements for a liner for long term stability. Calibration of empirical stability forecasts against actual performance for stress state with a k-ratio of 3.

MINELiDAR deployed their Hovermap unit mounted to a winch. The unit was lowered down through the pilot hole to scan the entire length of the raisebore.