Method and device for determining the pore water pressure in...

Details Method and device for determining the pore water pressure in... Method and device for determining the pore water pressure in...

G - Physics

01

L

73/129

G01L 7/18 (2006.01) E02D 1/02 (2006.01) E21B 7/26 (2006.01) E21B 47/06 (2006.01)

Patent

CA 1070517

METHOD AND DEVICE FOR DETERMINING THE PORE WATER PRESSURE IN A SOIL Abstract of the Disclosure A method and apparatus for determining the pore water pressure in a soil, especially clay, in which the pore pressure probe can be lowered into position separately of the pressure measuring device. A water-filled tube bearing the pore pressure probe at its lower end is installed at the required level, the probe having a filter through which pressure can be measured, and the measuring device is subsequently lowered into the tube and connected to the pore pressure probe. A reading is taken when the pressure has stabilized, and the measuring device is then disconnected from the pore water probe and the water pressure within the tube is noted, the pore pressure being then calculated from the two pressure readings. The separate pressure measuring device allows the operative parts of apparatus to be less expensive than known tips.

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