Device for determining the pore water pressure in a soil

Details Device for determining the pore water pressure in a soil Device for determining the pore water pressure in a soil

G - Physics

01

N

73/129

G01N 33/24 (2006.01) E02D 1/02 (2006.01) E21B 47/06 (2006.01)

Patent

CA 1134175

13 Abstract A device for measuring pore water pressure in soils employs a pore pressure sound as a sensing member and a closed measuring system for creating the least possible disturbance in soils having a low degree of permeability, such as clay. The closed liquid-filled measuring system comprises a hypodermic needle type of connection between the pore pressure sound and a measuring device, said needle being operative to penetrate a member of resilient material to extend into a liquid-filled chamber in said pore pressure sound and transfer a reading of the pore water pressure to said measuring device.

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