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Title: Method for making generally cylindrical underground openings

Abstract

A rapid, economical and safe method for making a generally cylindrical underground opening such as a shaft or a tunnel is described. A borehole is formed along the approximate center line of where it is desired to make the underground opening. The borehole is loaded with an explodable material and the explodable material is detonated. An enlarged cavity is formed by the explosive action of the detonated explodable material forcing outward and compacting the original walls of the borehole. The enlarged cavity may be increased in size by loading it with a second explodable material, and detonating the second explodable material. The process may be repeated as required until the desired underground opening is made. The explodable material used in the method may be free-flowing, and it may be contained in a pipe.

Inventors:
Issue Date:
OSTI Identifier:
6898093
Application Number:
ON: DE84011084
Assignee:
Dept. of Energy ERA-09-028991; EDB-84-093621
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; SHAFT EXCAVATIONS; UNDERGROUND EXPLOSIONS; UNDERGROUND MINING; CYLINDRICAL CONFIGURATION; ECONOMIC ANALYSIS; SAFETY; CONFIGURATION; ECONOMICS; EXPLOSIONS; MINING 420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)

Citation Formats

Routh, J.W. Method for making generally cylindrical underground openings. United States: N. p., 1983. Web.
Routh, J.W. Method for making generally cylindrical underground openings. United States.
Routh, J.W. Thu . "Method for making generally cylindrical underground openings". United States.
@article{osti_6898093,
title = {Method for making generally cylindrical underground openings},
author = {Routh, J.W.},
abstractNote = {A rapid, economical and safe method for making a generally cylindrical underground opening such as a shaft or a tunnel is described. A borehole is formed along the approximate center line of where it is desired to make the underground opening. The borehole is loaded with an explodable material and the explodable material is detonated. An enlarged cavity is formed by the explosive action of the detonated explodable material forcing outward and compacting the original walls of the borehole. The enlarged cavity may be increased in size by loading it with a second explodable material, and detonating the second explodable material. The process may be repeated as required until the desired underground opening is made. The explodable material used in the method may be free-flowing, and it may be contained in a pipe.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {5}
}