ETM-X SONIC EXTENSOMETER

A flexible sonic probe extensometer that allows detailed measurement of ground movement in mine and tunnel excavations, the ETM-X is highly accurate (+/-0.5mm) and can measure up to 20 anchor positions along a 7m long borehole.

Each system consists of a flexible probe and transducer head, which is connected via a cable to a portable rechargeable CANbus readout unit with high visibility LCD screen. A single system can be used to measure strata movement at multiple locations in a mine or tunnel system as the probe is only inserted into the borehole when a reading is to be taken.

Readings can be stored for download to a PC to allow trend analysis and compliance reporting.

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Features

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Measure dilation of strata throughout the length of a 7m hole

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Identifies the horizons where dilation occurs

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Determines the height of failure or roof softening

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Demonstrates trends of strata deformation

Applications

Coal Mining

Potash Mining

Salt Mining

Low Resolution Applications

High Accuracy Applicaitons

Hard Rock Mining

Tail-Gate Areas

Longwall Operations

Inaccessible Areas

Storage Facilities

Tunnelling

Civil Engineering Projects

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