Method and device for removing resilient gallery lining frames i

Details Method and device for removing resilient gallery lining frames i Method and device for removing resilient gallery lining frames i

1977-05-09

1978-09-19

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Lining

E21D 1122

Patent

active

041143868

ABSTRACT:
A method for removing resilient gallery lining frames in mining and tunnelling, such frames consisting of a number of mutually overlapping lining section segments with a box-like profile, comprises releasing the overlapping section segments from one another in order to recover the respective lining frames. The profile of the section segments has a longitudinal gap and overlapping ends of the segments are braced one with another by a wedge system acting on the longitudinal gap of the inner section, the segments being inserted one within the other in a dissimilar manner. At an overlapping region the outer section segment is bent outwardly to provide an opening at the longitudinal gap therein and the inserted end of the inner section segment at the overlap is moved substantially normal to the opening made by the outward bending to release the overlapping sections from one another.

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