DEEP-BASING EGRESS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$48,145.00
Award Year:
1986
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
4037
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Itasca Consulting Gp Inc
Po Box 14806, Minneapolis, MN, 55414
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
MARK BOARD
(612) 623-9599
Business Contact:
() -
Research Institution:
n/a
Abstract
THE DEEP-BASING CONCEPT REQUIRES THE CAPABILITY FOR FAST EGRESS FROM THE UNDERGROUND FACILITY. THIS EGRESS REQUIRES THE USE OF INCLINED RAISE BORERS, THE UTILITY OF WHICH DEPENDS, TO AN EXTENT, ON THE FLOW OF MUCK IN THE INCLINED RAISE. THREE METHODS FOR DETERMINING THE FLOW PROPERTIES OF MUCK ARE THE EMPIRICAL, THE ANALYTICAL, AND THE NUMERICAL. THE WORK PROPOSED HERE OFFERS A COMBINED EMPIRICALNUMERICAL APPROACH. A SERIES OF BENCH-SCALE LABORATORY TESTS ARE DESIGNED TO DETAIL THE FLOW PROPERTIES OF BROKEN ROCK AS A FUNCTION OF THE ROCK TYPE, SIZE GRADATION, WATER CONTENT, AND RAISE CONDITIONS. A MULTI-VARIATE LEAST-SQUARES ANALYSIS WILL PRODUCE AN ANALYTICAL EXPRESSION FOR DETERMINING THE MUCK FLOW PROPERTIES. IN ADDITION, IT IS PROPOSED TO DEMONSTRATE THE ABILITY OF THE DISTINCT ELEMENT METHOD TO PREDICT MUCK FLOW. THIS COULD PROVIDE THE CAPABILITY FOR EXTRAPOLATION OF FLOW TO NEW MUCK AND RAISE CONDITIONS WITHOUT THE NEED TO RESORT TO PARAMETER STUDIES.

* information listed above is at the time of submission.

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