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Analysis of Tunnel Support Structure With Consideration of Support- rock Interaction.

Authors
Dixon-JD
Source
NTIS: PB 201 897 :45 pages
Link
NIOSHTIC No.
10000968
Abstract
The Bureau of Mines investigated the principles of support-rock interaction, based on structural matrix methods which permit mathematical formulation of the problem and computer solution. The principles are given under two main sections: the first discusses the idealization of the tunnel support structural system for matrix analysis; the latter discusses the analysis procedures necessary for carrying out the solution. A general frame matrix computer program and a medium-size computer should be sufficient for carrying out the procedures involved. The example problem consists of a circular tunnel support which is subjected to a uniformly distributed vertical load. Three wall thickness-radius ratios are studied in combination with four support-rock modulus ratios. This problem illustrates the main procedures of the support-rock interaction analysis involved, and examination of the results reveals the influence of the relative rigidities of the support and the rock.
Publication Date
19710101
Document Type
IH; Report of Investigations
Fiscal Year
1971
NTIS Accession No.
PB-201897
NTIS Price
A04
Identifying No.
RI 7526
NIOSH Division
SRC;
Source Name
NTIS: PB 201 897
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