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Title:
METHOD AND TOOL FOR PRODUCING A PILE
Document Type and Number:
WIPO Patent Application WO/1991/000941
Kind Code:
A1
Abstract:
A method for producing a pile provides for feeding a self-hardening material (6) into a hole (1) or into the ground while generating high-voltage discharges inside the material (6) and moving said zone (7) of feeding the material and generating the high-voltage discharges over the height of the pile to be formed. The total of the discharge energy at a given depth is chosen so as to provide for the widening of the corresponding section of the hole (1) or the ground up to the desired diameter at said depth. Under the influence of the discharges a zone (8) of cemented ground of increased rigidity is created around the formed pile together with a zone (9) of compacted ground having enhanced constructional qualities. A tool for making a pile comprises a pipe (3) for feeding the material and an electric discharger with coaxially-located and mutually-spaced electrodes (10, 11) mounted on an insulating rod (15) passing inside the first electrode (10). The first electrode (10) is connected to the end of the pipe (3) provided with an outlet opening (17) so that the axis of the electrode is parallel to the axis of the pipe (3) and the distance from the second electrode (11) to the outlet opening (17) of the pipe (3) is no smaller than the interelectrode space (16).

Inventors:
Egorov, Alexei Leonidovich (ul. Leningradskaya, 85-40 Pushki, Leningrad 3, 19806, SU)
Gavrilov, Gennady Nikolaevich (Suvorovsky pr, 49-6 Leningrad, 4, 19314, SU)
Application Number:
PCT/SU1990/000064
Publication Date:
January 24, 1991
Filing Date:
March 06, 1990
Export Citation:
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Assignee:
Egorov, Alexei Leonidovich (ul. Leningradskaya, 85-40 Pushki, Leningrad 3, 19806, SU)
Gavrilov, Gennady Nikolaevich (Suvorovsky pr, 49-6 Leningrad, 4, 19314, SU)
International Classes:
E02D3/02; E02D3/11; E02D5/04; E02D5/44; E02D5/48; E02D5/54; E21B7/15; E21B7/28; (IPC1-7): E02D3/02; E02D5/44; E02D5/48; E02D5/54; E02D7/06
Foreign References:
SU400662A1
SU1300094A11987-03-30
DE2651023A1
DE1484484B1
DE2250159B2
FR2528088A1
US3512365A
US2465557A
GB1245591A
DE2651023C2
Other References:
See also references of EP 0481079A1
Attorney, Agent or Firm:
The, Ussr Chamber Commerce And Industry OF. (ul. Kuibysheva, 5/2 Moscow, 5, 10373, SU)
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