Trolex Ltd

RockMonitor XM - Remote Strata Monitoring

The Trolex RockMonitor XM is a mechanical extensometer designed to monitor the condition of roof-bolted underground roadway or cut-through strata. It offers a fully mechanical solution for measuring displacement of tunnel strata, allowing geotechnical engineers and mine operators to periodically monitor and assess critical information regarding the safety and effectiveness of roadway support structures.

Mechanical extensometers (telltales) give local visual indication of displacement measurement to provide information regarding strata condition. Spring anchors are used to locate a set of wires at different heights inside a borehole. The wires are connected to the visual indicator measurement mechanism.

Any dilation or bed separation of the strata will appear to pull the indicators along their axis showing how much each anchor has moved (relative to roadway roof).

Telltales can be installed at varying intervals in the sides as well as the roof of a tunnel and are designed for ease of installation, measurement accuracy and mechanical re-set as required (up to 150mm of measurement displacement without re-set).

For more information, please visit: www.trolex.com/product/rockmonitorxm