SUBSCALE TESTING OF ROCKBOLTED TUNNELS IN JOINTED MEDIA

Award Information
Agency:
Department of Defense
Branch
Defense Threat Reduction Agency
Amount:
$67,500.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
8314
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Applied Research Assocs Inc
4300 San Mateo Blvd Ne - Ste A, Albuquerque, NM, 87110
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DONALD M COLE
(505) 883-3636
Business Contact:
() -
Research Institution:
n/a
Abstract
DEVELOPMENT OF AN INNOVATIVE AND ECONOMICAL EXPERIMENTAL METHOD IS PROPOSED WHICH CAN PROVIDE THE BASIC BEHAVIOR DATA NECESSARY TO MEET THE DNA OBJECTIVE OF PROVIDING ADEQUATE ANALYSIS, DESIGN AND ASSESSMENT METHODS FOR MINIMALLY HARDENED TUNNELS. THIS DEVELOPMENT IS ACCOMPANIED BY ANALYSIS CAPABLE OF REPRESENTING THE COMPLEX INELASTIC MATERIAL BEHAVIOR OF THE ROCK MASS AND OF REPRESENTING SIMPLE JOINT AND ROCKBOLT CONFIGURATIONS. THIS COMBINED EXPERIMENTAL AND ANALYTICAL APPROACH ALLOWS THE DEVELOPMENT AND EVALUATION OF BASIC MODELING PROCEDURES AND PARAMETERS WHICH CAN BE LATER INCORPORATED INTO A NUMERICAL PROCEDURE SUCH AS AN ADVANCED DISCRETE ELEMENT CODE, CAPABLE OF REPRESENTING THE NONLINEAR RESPONSE OF COMPLEX TUNNEL, JOINT AND BOLT CONFIGURATIONS. THIS STUDY CAN ALSO PROVIDE IMPORTANT GUIDANCE TO THE LATER DEVELOPMENT OF SIMPLIFIED ASSESSMENT AND DESIGN METHODS REFLECTING THE MAJOR RESPONSE MECHANISMS OF ROCKBOLTED TUNNELS IN JOINTED ROCK. THE PROPOSED EXPERIMENTAL PROCEDURE WILL BE AVAILABLE TO SUPPORT THE RECOMMENDATIONS OF THE EXPERIMENTAL REVIEW AND REQUIREMENTS STUDY NOW UNDERWAY AT DNA.

* information listed above is at the time of submission.

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