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Measuring the Total Pressuring, the Interstitial Pressure and the Groundwater Table Rating
Measuring the total pressure in the ground is done through the intermediate of a pressure sensor buried in the ground, which transfers the required information to the surface. Deformation measuring systems are based on various principles, such as mechanical, hydraulic, acoustic, capacitive, inductive, and piezoelectric. Interstitial pressure is measured in piezometers. To protect it, as well as to obtain a better distribution of constraints on their sensitive sides, sensors are often surrounded by a pocket of fine sand. This could potentially be considered an inclusion. Changes in temperature can have an effect on the electric circuit of the deformation gauges, the expansion of the liquid inside the sensor, the global expansion of the sensor which will be different from that of the neighboring ground, and the vibrating wires, if present. Membrane sensors seem preferable to piston sensors since they cause less disturbance to the field of constraint in the ground.
Measuring the Total Pressuring, the Interstitial Pressure and the Groundwater Table Rating
Measuring the total pressure in the ground is done through the intermediate of a pressure sensor buried in the ground, which transfers the required information to the surface. Deformation measuring systems are based on various principles, such as mechanical, hydraulic, acoustic, capacitive, inductive, and piezoelectric. Interstitial pressure is measured in piezometers. To protect it, as well as to obtain a better distribution of constraints on their sensitive sides, sensors are often surrounded by a pocket of fine sand. This could potentially be considered an inclusion. Changes in temperature can have an effect on the electric circuit of the deformation gauges, the expansion of the liquid inside the sensor, the global expansion of the sensor which will be different from that of the neighboring ground, and the vibrating wires, if present. Membrane sensors seem preferable to piston sensors since they cause less disturbance to the field of constraint in the ground.
Measuring the Total Pressuring, the Interstitial Pressure and the Groundwater Table Rating
Monnet, Jacques (author)
2015-11-30
16 pages
Article/Chapter (Book)
Electronic Resource
English
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