CASE STUDY – DATA VERIFICATION (TAILINGS DAM)

A mine site was experiencing movement on a tailings impoundment and concerns were raised about the structure’s actual hydrostatic pressure. A borehole camera was deployed to verify that the automated system that was monitoring standpipes was reporting valid pressures.

• Verified sounding levels of monitoring wells and piezometer pressure readings
• Identified piezometers that needed replacement
• Identified mudded in instruments
• Investigated damage in inclinometer casing

CASE STUDY – PENDULUM ANCHORAGE (CONCRETE DAM)

An inverted pendulum deployed at a concrete dam was showing limited displacement monitoring range. It was suspected that the lower wire anchor was not centered properly in the metal casing.

Visual inspection with the camera was able to confirm that the wire anchorage was against the casing wall at the bottom of the casing. It was possible to tie off the old wire to the side wall and a new anchor and wire were installed, resulting in salvaging the instrument.