Piezometer: Deep sea sediment pore pressure monitoring

Piezometer is designed for in situ measurement and monitoring of pore pressure for geotechnical and hydro-sedimentological applications down to 6000 meters.

 Crucial controls for the stability of sediments: pressure of the fluids between the solid grains of the sediment

Piezometer inserted into the sediment and provides the possibility to measure the pore pressure in different depth levels

 Can be monitored in a short period of hours

Datasheet

Features and Benefits

  • Deep sea sediment measurement
  • Pore pressure monitoring
  • Pressure of the fluids between the solid grains of the sediment
  • Can measure the pore pressure in different depth levels
  • Examples of use

  • Determine the hydraulic parameters of the sediments based on the dissipation of the interstitial pressure generated by the sinking of the piezometer
  • To identify and quantify the hydraulic gradients in the sedimentary layers
  • Detect the processes responsible for interstitial overpressures
  • To quantify the effect of these unpredictable processes on the generation and dissipation of interstitial overpressures
  • Technical data

  • Instrumented stake: made with a set of tubes joined by a connecting part called sleeve and several length of tube are available
  • Sensors: differential pressure sensor subjected to hydrostatic pressure and pressure of the sediment associated with a temperature sensor
  • Clock measurement acquisition
  • Records and dates measurements