Tail packing for a slurry pressurized shield

Details Tail packing for a slurry pressurized shield Tail packing for a slurry pressurized shield

1978-02-21

1980-06-24

Smith, Robert I.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

277138, E01G 516

Patent

active

042092680

ABSTRACT:
A tail packing for a slurry pressurized shield is provided, comprising outer layers of strings and a filter element layer between the outer layers. The outer layers are composed of a number of strings densely arranged in a juxtaposed relation.

REFERENCES:
patent: 2798005 (1957-07-01), Love
patent: 2891921 (1959-06-01), Kumnick et al.
patent: 2998991 (1961-09-01), Spencer
patent: 3013824 (1961-12-01), Wilson
patent: 4057971 (1977-11-01), Yamazaki
patent: 4139989 (1979-02-01), Jones

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