Extensometers
Applications
 Borehole extensometers are used to measure movements of soil and rock
along the the axis of a borehole. A wide range of extensometers is available, each designed for a particular application. In general, typical applications include:
- Monitoring settlement or heave in excavations, foundations, dams, and embankments.
- Monitoring subsidence above mines, tunnels, and other underground openings.
- Monitoring convergence in tunnel walls and other underground openings.
- Monitoring movements in rock slides, walls, and abutments.
- Monitoring consolidation of soil under embankments and surcharges.
- Monitoring compression of pile and soil under pile.
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