Remote Nozzle Permits High Production & Safety

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Title: Remote Nozzle Permits High Production & Safety

Author(s): James S. Goff

Publication: Special Publication

Volume: 45

Issue:

Appears on pages(s): 405-417

Keywords:

Date: 1/1/1974

Abstract:
An economic need necessitated the experimentation and development of a high production nozzle that had a low maintenance factor. With commercial nozzles, as production increased, the maintenance factor accelerated and the nozzle itself proved to be a limiting factor for higher production. The shotcrete was used for rock support in an 18' horseshoe tunnel and was used primarily by itself to make the rock support itself in lieu of using shotcrete with rock bolts or steel sets. All of our equipment is rail-mounded with a sliding floor, and a "California Switch" in each heading.