PRODUCTS OVERVIEW

RMT offers a wide range of geotechnical instrumentation for monitoring rock displacements around underground excavations and support loads for tunnel linings and reinforcement systems. We also provide specialised instruments for determining the in-situ integrity of reinforcement tendons and for measuring absolute rock stress and stress change. Our product range includes instruments and equipment designed and approved for use in hazardous atmospheres. This includes the m-Comm communication system. Some of our most popular products are described below. Further product information can be accessed or downloaded below, and we would be pleased to provide advice against your specific applications.

RMT also provides high quality, bespoke geotechnical instrumentation design, manufacture and installation services. Our installation and commissioning engineers are trained for confined space and mine environments.

Instrumented Rockbolts - used to verify the action of the rock-reinforcement by monitoring the integrity of the bolts and the strain distribution within them. We can gauge most types of rockbolt and ground anchor.

Extensometers - used to monitor the changes in deformation profile of the rock mass around an excavation. Our range includes the high accuracy 'Magnesonic' probe system and remote reading extensometers for connection to mine and tunnel communication systems. The sonic probe extensometer is intrinsically safe approved (Ex ia).

Visual Telltales - colour-coded indicators of relative movement within the rock mass. These are primarily safety devices, but can also be used to measure deformation. They are deployed in all UK coal mines using rockbolts as the primary support.

Remote Reading Telltale System - a major development of the mechanical telltale device to incorporate accurate, stable displacement measurement electronics and telemetry of the readings to the surface. The system has ATEX and MSHA intrinsic safety approvals.

Stress Measurement Equipment - RMT is the sole UK distributor for the Mindata range of rock stress measurement equipment, including the industry standard CSIRO Hollow Inclusion Cell. We also supply vibrating wire strain gauge systems for determining loads in tunnel and shaft linings. The strain meter is intrinsically safe approved (Ex ia).

Acoustic Energy Meter - a handheld instrument which can measure the integrity and indicate potential delamination and void structural problems in lined and unlined tunnel surfaces. The instrument has SABS (Ex ib) and MSHA intrinsically safe approvals.

Specialist Communication Products - RMT's underground hazardous atmosphere expertise is now associated with a range of specialist communication products (m-Comm) for underground, fire and rescue, and confined space applications. The m-Comm system has Ex ia, MSHA, CSA and UL intrinsic safety approvals. For further information on the m-Comm system, use the link below:

Product information - file downloads (click icon to start download)