Tunnel Engineering. A Museum Treatment
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Tunnel Engineering. A Museum Treatment - Robert M. Vogel
The Project Gutenberg EBook of Tunnel Engineering. A Museum Treatment, by
Robert M. Vogel
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Title: Tunnel Engineering. A Museum Treatment
Author: Robert M. Vogel
Release Date: May 24, 2012 [EBook #39785]
Language: English
*** START OF THIS PROJECT GUTENBERG EBOOK TUNNEL ENGINEERING ***
Produced by Chris Curnow, Tom Cosmas, Joseph Cooper and
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This is Paper 41 from the Smithsonian Institution United States National Museum Bulletin 240, comprising Papers 34-44, which will also be available as a complete e-book.
The front material, introduction and relevant index entries from the Bulletin are included in each single-paper e-book.
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SMITHSONIAN INSTITUTION
UNITED STATES NATIONAL MUSEUM
BULLETIN 240
SMITHSONIAN PRESS
MUSEUM OF HISTORY AND TECHNOLOGY
Contributions
From the
Museum
of History and
Technology
Papers 34-44
On Science and Technology
SMITHSONIAN INSTITUTION · WASHINGTON, D.C. 1966
Publications of the United States National Museum
The scholarly and scientific publications of the United States National Museum include two series, Proceedings of the United States National Museum and United States National Museum Bulletin.
In these series, the Museum publishes original articles and monographs dealing with the collections and work of its constituent museums—The Museum of Natural History and the Museum of History and Technology—setting forth newly acquired facts in the fields of anthropology, biology, history, geology, and technology. Copies of each publication are distributed to libraries, to cultural and scientific organizations, and to specialists and others interested in the different subjects.
The Proceedings, begun in 1878, are intended for the publication, in separate form, of shorter papers from the Museum of Natural History. These are gathered in volumes, octavo in size, with the publication date of each paper recorded in the table of contents of the volume.
In the Bulletin series, the first of which was issued in 1875, appear longer, separate publications consisting of monographs (occasionally in several parts) and volumes in which are collected works on related subjects. Bulletins are either octavo or quarto in size, depending on the needs of the presentation. Since 1902 papers relating to the botanical collections of the Museum of Natural History have been published in the Bulletin series under the heading Contributions from the United States National Herbarium, and since 1959, in Bulletins titled Contributions from the Museum of History and Technology,
have been gathered shorter papers relating to the collections and research of that Museum.
The present collection of Contributions, Papers 34-44, comprises Bulletin 240. Each of these papers has been previously published in separate form. The year of publication is shown on the last page of each paper.
Frank A. Taylor
Director, United States National Museum
Contributions from
The Museum of History and Technology.
Paper 41
Tunnel Engineering—A Museum Treatment
Robert M. Vogel
Figure 1.—
Mining by early European civilizations
, using fire setting and hand chiseling to break out ore and rock. MHT model—¾" scale. (Smithsonian photo 49260-H.)
Robert M. Vogel
TUNNEL ENGINEERING—A MUSEUM TREATMENT
During the years from 1830 to 1900, extensive developments took place in the field of tunneling, which today is an important, firmly established branch of civil engineering. This paper offers a picture of its growth from the historical standpoint, based on a series of models constructed for the Hall of Civil Engineering in the new Museum of History and Technology. The eight models described highlight the fundamental advances which have occurred between primitive man’s first systematic use of fire for excavating rock in mining, and the use in combination of compressed air, an iron lining, and a movable shield in a subaqueous tunnel at the end of the 19th century.
The Author: Robert M. Vogel is curator of heavy machinery and civil engineering, in the Smithsonian Institution’s Museum of History and Technology.
Introduction
W
ith few exceptions, civil engineering is a field in which the ultimate goal is the assemblage of materials into a useful structural form according to a scientifically derived plan which is based on various natural and man-imposed conditions. This is true whether the result be, for example, a dam, a building, a bridge, or even the fixed plant of a railroad. However, one principal branch of the field is based upon an entirely different concept. In the engineering of tunnels the utility of the structure
is derived not from the bringing together of elements but from the separation of one portion of naturally existing material from another to permit passage through a former barrier.
In tunneling hard, firm rock, this is practically the entire compass of the work: breaking away the rock from the mother mass, and, coincidently, removing it from the workings. The opposite extreme in conditions is met in the soft-ground tunnel, driven through material incapable of supporting itself above