Instrumentation is crucial for monitoring the construction of new tunnels and ensuring the long-term performance and safety of existing ones. Durham Geo Slope Indicator manufactures extensometers, pressure cells, inclinometers, and tiltmeters, which are all commonly used to oversee these significant projects.
Case Studies
Highly-stressed rock and six brick-lined rail tunnels complicated a deep excavation.
This island state has begun a major project to upgrade its sewerage infrastructure.
Highway tunnels, each designed to carry 3 lanes of traffic, were constructed that divide Guayaquil's city center.
Real-time monitoring of two light rail transit tunnels is providing safety for commuters.
Monitoring – At one location, three piezometers were installed in single borehole.
The NYC Transit Authority began a massive rebuilding and rehabilitation program to update the system.
Before work could begin on a new retail center the developers had to improve the storm water drainage system.
A tunnel boring machine has worked its way through two kilometers of some of the hardest rock ever.
Road and rail traffic between Switzerland and Italy is funneled through the town of Brig.
In 1994, Helsinki Water opened the Viikinmä wastewater underground processing plant, one of Finland's most significant environmental projects.
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Related Products
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Digitilt AT System
The Digitilt AT system includes a digital probe, control cable marked in meters or feet, a cable gate, a Bluetooth reel, the Digitilt Reader app for Android-based devices, and DigiPro2 inclinometer software. -
EL Tiltmeter
EL tiltmeters are narrow-angle, high-resolution sensors used to monitor changes in the inclination of a structure. -
Spot-Weldable Strain Gauges
Spot-weldable strain gauges are used with strain gauge sensors and a vibrating wire indicator or data logger to monitor strain in steel members. -
Customized Datalogging Solutions
A complete data acquisition system consists of data logger components, data retrieval components, and software components. -
EL Beam Sensor
The DGSI EL Beam Sensor is used to monitor differential movement and rotation in structures. -
Digital Tape Extensometer
Used to detect and monitor changes in the distance between two reference points. -
Multi-Level VW Piezometers
This Piezometers are used to monitor pore-water pressure at different zones in the borehole. -
VW MiniLogger
The VW MiniLogger is a compact datalogger designed to monitor a single VW sensor, such as a piezometer or crackmeter. -
Mechanical 3D Crackmeter
The mechanical 3D crackmeter is used with a dial indicator to monitor movement at joints and cracks. -
Rod Extensometer
The rod extensometer monitors changes in the distance between one or more downhole anchors and a reference head at the borehole collar.
