Mine tunnel support system
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United States of America Patent
Stats
-
Apr 26, 1994
Issued Date -
N/A
app pub date -
May 5, 1992
filing date -
Oct 29, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mine tunnel support system of the type comprising spaced interconnected support sections is described. The support system is advanced along the tunnel in the forward direction in which mining is proceeding. Bolting machines may be carried on the support sections. A drill may be provided on one section and a bolt inserter provided on a section rearwardly thereof. As the system is advanced, the bolt inserter can insert a bolt into a hole previously formed by the drill. The operation of providing roof bolts is therefore split into a number of stages. A mechanism for erecting and/or pre-stressing permanent arch supports may be provided at the rear of the sections.
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