Arceau de soutenement pour galeries de mines

Mine gallery supporting arch - has short intermediate pieces which are fitted between portions of segments which overlap

Abstract

The supporting arch is for use in mine galleries. It consists of a number of trough sections forming segments fitting together and secured by clamping collards where they overlap. Where this overlapping of the segments takes place (3, 4) their faces opposite each other are held apart by intermediate pieces (8), which are relatively short compared to the amount of overlap. The pieces can be detachably mounted on the support segments, and they can be shaped to fit the outlines of the segment faces. They can be in the form of short channel sections similar to the straight portions of the segments.

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    Publication numberPublication dateAssigneeTitle
    FR-2393139-A1December 29, 1978Bochumer Eisen HeintzmannSoutenement a arceaux coulissants a butees d'arret