C2- GEOSmart In-Place Inclinometer
The GEOSmart In-Place Inclinometer
GEOSmart is an in-place inclinometer consisting of closely spaced MEMS (Micro-Electro-Mechanical Sensors) approximately 0.6m apart that are mounted on stainless steel tubing with a single cable running the length of the string which reduces the number of cables protruding from the top of the borehole. It is comprised of a biaxial probe, cable reel, and an ultra-rugged Field Tablet supplied with ‘In-Port Pro’ data capture software.
GEOSmart is installed in either Schedule 40 or 70mm casing and is used to monitor displacement in geotechnical applications including;
- Diaphragm walls
- Retaining walls
- Potential slope failures.
Due to its lightweight robust construction with joints capable of bending up to 90º, the GEOSmart system is conveniently transported to the site and can be installed by one site technician.
- Real Time Monitoring
- Sensors are connected sequentially
- Borehole displacement in engineering units (mm/M)
- Nodes pre-loaded with calibration information
- Modular and robust design
- Modular and robust design
- GEOSmart is ideal for continuous, unattended monitoring and can deliver readings in real time.
- Only one signal cable per borehole, quicker installation and simplified connection to the data logger.
- Less post processing in the monitoring software resulting in the reduction of possible calculation errors.
- Quicker and easier installation as segments can be installed in any order.
- GEOSmart can be removed at the end of the project and redeployed on new applications.
- Compact and convenient shipping in a 72 x 72 x 32cm box that can be installed on site by one person.
GEOSmart In-place Inclinometer Operation
The GEOSmart system contains several sensor nodes in a vertical string installed in either Schedule 40 PVC or in a 70mm inclinometer casing. The pipe or casing provides access for subsurface measurements. The joints between each sensor are robust, allowing the system to maintain a consistent orientation of all the nodes, regardless of whether it is installed in PVC pipe or ABS inclinometer casing.
The pipe or casing is typically installed in a vertical borehole that passes through a suspected zone of movement. The nodes are spaced 0.6 metres apart and provide a reading resolution similar to a traversing probe. The system spans the zone of movement and when the ground moves, the pipe/casing moves with it, changing the inclination of the nodes inside.
Inclination measurements from the nodes are processed to provide graphs of the casing profile and changes in the profile. A change in profile may indicate displacement or movement. The GEOSmart system is connected to a data acquisition system, and readings are transmitted to processing software triggering alarms based on displacements or rate of change.