Contractible mine stopping and contractible block member for use

Details Contractible mine stopping and contractible block member for use Contractible mine stopping and contractible block member for use

1992-04-02

1993-04-13

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

4051501, 405288, 52573, 248548, 248900, 188377, E21F 114

Patent

active

RE0342203

ABSTRACT:
A contractible mine stopping adapted to be installed to extend as a vertical wall from the floor to the roof of a passageway in a mine, comprising a series of rows of substantially solid substantially non-compressible blocks of substantially fire-resistant material stacked one on top of another, and at least one row of contractible substantially fire-resistant block-like members adapted to contract without loss of structural integrity when the wall is subjected to a compressive load, as during a convergence of the floor and roof on the passageway. Each block-like member is preferably a hollow metal member which, when subjected to a compressive load, is adapted to contract heightwise of the member a distance corresponding to at least a major portion of the height of the member without loss of structural integrity of the member.

REFERENCES:
patent: 3586131 (1971-06-01), Lemire
patent: 3921240 (1975-11-01), Fyfe
patent: 4052029 (1977-10-01), Townsend
patent: 4352484 (1982-10-01), Gertz et al.
patent: 4492291 (1985-01-01), Chometon et al.
patent: 4516879 (1985-05-01), Berry et al.
patent: 4601367 (1986-07-01), Bongers
patent: 4815565 (1989-03-01), Sicking et al.
patent: 4820081 (1989-04-01), Kennedy et al.

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