Masters Theses

Abstract

"It is generally believed that the spacing of simultaneously initiated collar primed multiple charges is not dependent on the charge length. The stresses generated by explosive charges have been assumed to propagate through a material in a cylindrical manner. this assumption implied that the stress generated in any plane along the charge diameter would have been uniform in magnitude and direction. A finite explosive velocity along with a conical stress wave causes the stresses near the collar to differ from those farther down the column. for this reason, the spacing of charges would be dependent on charge length. An experimental technique using models was employed to investigate charge length and other spacing parameters. materials with different properties were selected as models for the purpose of determinating to what extent material's properties influenced the spacing. This investigation showed that charge length was of extreme importance in the spacing of instantaneously initiated charges of short length. This could be attributed to decreased stress intensities in the collar region caused by noncoherent wave fronts in this region"--Abstract, page ii.

Advisor(s)

Rollins, Ronald R.

Committee Member(s)

Bruzewski, Robert F., 1918-1978
Haas, Charles J.

Department(s)

Mining Engineering

Degree Name

M.S. in Mining Engineering

Publisher

University of Missouri--Rolla

Publication Date

1968

Pagination

ix, 73 pages

Note about bibliography

Includes bibliographical references (pages 68-71).

Rights

© 1968 Calvin Joseph Konya, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Blasting
Coal mines and mining -- Explosives
Shaped charges -- Mathematical models

Thesis Number

T 2113

Print OCLC #

5995578

Electronic OCLC #

805733147

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