Soil nailing

Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor

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Details

405258, 227130, 124 56, E21D 2000, E21D 2100, F21B 1100

Patent

active

050448315

ABSTRACT:
In a method of soil nailing a soil nail is placed in the ground by being fired from a barrel of a launcher, the method including the steps of loading the nail into the barrel with the nail being a loose fit in the barrel, providing the nail with a sabot which is a sliding fit in the barrel, supporting the barrel such that a forward end of the barriel is spaced from the surface of the ground into which the nail is to be fired, admitting pressurized gas to the barrel to apply an accelerating force to the sabot so as to drive the sabot and with it the nail towards the forward end of the barrel, allowing the nail to travel towards the ground surface such that the sabot exits from the barrel thereby discontinuing the accelerating force and allowing the nail to thereafter continue travelling to penetrate and become embedded in the ground under its own momentum.

REFERENCES:
patent: 2512831 (1950-06-01), Holmes
patent: 3802204 (1974-04-01), Mason
patent: 3819101 (1974-06-01), Elders et al.
patent: 4005811 (1977-02-01), Garaty
patent: 4033419 (1977-07-01), Pennington
patent: 4313695 (1982-02-01), McCartney
Trauaux, vol. 11, No. 553, Mar. 1981, pp. 76-81, G. Verrier et al., p. 78, Paragraphs 5.1.3, 5.1.4; FIGS. 1-5, 7.
"Soil Nailing-Application and Practice--Part I", Ground Engineering, vol.-19(8), Nov. 86 and Part 2, vol. 20(1), Jan. 87.
"Soil Nailing--The Second Decade"--International Conference on Foundations and Tunnels, London, 1987.
"Soil Nailing" C. R. Coll. Int. Reinforcement Des Sols, Paris, 1979.

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