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Driving large underground heading

Debenedetti, A.

Principle of method is, in initial phase, to break down rock in full cross section and along entire length of tunnel, broken rock remaining in place to partially or totally fill cavity; danger of rock falling from roof or walls, and openings being created outside profile, is avoided; in second phase, broken rock is removed and final lining is put in place immediately afterwards; by this sequence of operation, only very short stretches of tunnel remain open, and then only for short time; method also reduces working costs.

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Driving large underground heading

Debenedetti, A.

Principle of method is, in initial phase, to break down rock in full cross section and along entire length of tunnel, broken rock remaining in place to partially or totally fill cavity; danger of rock falling from roof or walls, and openings being created outside profile, is avoided; in second phase, broken rock is removed and final lining is put in place immediately afterwards; by this sequence of operation, only very short stretches of tunnel remain open, and then only for short time; method also reduces working costs.

Driving large underground heading

Debenedetti, A.

Principle of method is, in initial phase, to break down rock in full cross section and along entire length of tunnel, broken rock remaining in place to partially or totally fill cavity; danger of rock falling from roof or walls, and openings being created outside profile, is avoided; in second phase, broken rock is removed and final lining is put in place immediately afterwards; by this sequence of operation, only very short stretches of tunnel remain open, and then only for short time; method also reduces working costs.

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Title:

Driving large underground heading

Additional title:

Min J

Contributors:

Debenedetti, A. (author)

Published in:

Mining Journal ; 260

Publication date:

1963

Size:

2 pages

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Mines and mining

© Metadata Copyright Elsevier B. V. All rights reserved.

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