Masters Theses


Jay C. Dotson


"This paper is an outgrowth of research conducted at Missouri School of Mines and Metallurgy over a two year period. The purpose of the study is to assemble into one volume information that is pertinent to the rehabilitation of tunnels. Notwithstanding the voluminous size of the paper, much descriptive material necessarily has been omitted because of the far-reaching scope of tunneling practices and of the specialized fields therein. An extensive bibliography has been prepared to supplement the material that has been selected for presentation. Through consultation with tunnel men of all ranks, observations in the field, and an intensive search of literature, an attempt has been made to collect sufficient information to enable field engineers to reopen tunnels that have been obstructed by the in-fall of ground.

Generalized methods of rehabilitation that will obtain to various conditions which may be encountered in the field are given under the heading of TUNNEL REHABILITATION METHODS. The conditions that govern the selection of methods are outlined briefly.

The material under the heading of TUNNEL OPERATIONS gives details of basic tunneling operations and of fundamental problems of construction and design. Modern tunneling methods are discussed; moreover, older methods that require little or no mechanization are also presented in view of the juncture of the isolated placement of many tunnels and the exigency that may attend rehabilitation. The majority of highway and railway tunnels, by nature, are located in mountainous or hilly regions, many of which are remote from industrialized areas where mining and tunneling equipment and materials are readily procured. Rehabilitation of limited extent ordinarily will not justify the use of special machinery or equipment. Moreover, the skill and experience of workmen who on short notice are available for the rather unusual task of reopening tunnels is also a limiting factor to the use of specialized methods and/or equipment. Thus, in the overall picture of tunnel rehabilitation, considerable emphasis must be given to the principle of getting the job done with the materials at hand.

Several examples of tunnel rehabilitation projects are presented in the final portion of discussion, CASE HISTORIES OF TUNNEL REHABILITATION. These examples were selected to illustrate the applicability of specific methods to given sets of conditions. Details of the processes from start to finish are described to give an integrated picture of the tunnel rehabilitation program. Alternate methods are suggested, and the shortcomings of some of the existing methods are indicated. "--Introduction, pages 1-2.


Forrester, James Donald, 1906-1979


Mining Engineering

Degree Name

M.S. in Mining Engineering


Missouri School of Mines and Metallurgy

Publication Date



x, 224 pages

Note about bibliography

Includes bibliographical references (pages 219-223).


© 1954 Jay C. Dotson, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Underground construction
Tunnels -- Maintenance and repair
Tunnels -- Maintenance and repair ǂv Case studies

Thesis Number

T 1068

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