Means for providing a vertical drain in soil

Details Means for providing a vertical drain in soil Means for providing a vertical drain in soil

1982-05-28

1985-08-27

Husar, Cornelius J.

Hydraulic and earth engineering

Drainage or irrigation

Porous waterway, e.g., sand drain, etc.

405 36, E02B 1100, E02D 310

Patent

active

045375275

ABSTRACT:
Apparatus for providing a vertical drain in the soil, comprising a push tube to be pushed into the soil and which carries within it a prefabricated drain, provided with an anchor on the lower end, said prefabricated drain remaining in its place with the aid of an anchor while the push tube is being pulled back upwards. The push tube carries within itself a cut-off device at its lower end for the prefabricated drain, cutting it at desired height. Thereafter, the push tube is, if needed, lifted up for another anchor to be affixed to the lower end of the prefabricated drain. The object of the invention is to achieve that the prefabricated drain that has been cut off inside the push tube is pushed out from the lower end of the push tube. As taught by the invention, the push tube carries inside itself above the cut-off device pushing members which are located on both sides of the prefabricated drain and press the prefabricated drain between themselves with the aid of operating member and move it downwards so that the lower end of the prefabricated drain will project below the lower end of the push tube for another anchor to be affixed to the lower end of the prefabricated drain.

REFERENCES:
patent: 2577252 (1951-12-01), Kjellman
patent: 3720063 (1973-03-01), Shono
patent: 3797251 (1974-03-01), Shimizu
patent: 3797252 (1974-03-01), Ohtsuka
patent: 3891186 (1975-06-01), Thorsell
patent: 4166508 (1979-09-01), van der Berg

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