Response of Rock Inclusions to Air Blast.
Abstract
Three instrumented granite rocks were buried at 2-, 3-, and 4-foot depths at the 78-foot range from ground zero in the 100-ton AN/FO (ammonium nitrate-fuel oil) test conducted at the Defence Research Establishment Suffield (DRES), Ralston, Alberta, Canada on 28 August 1969. The test was part of a study to access the vulnerability of buried cables to damage by rock inclusions in soil. The objective of the test was to provide field data on the relative displacement due to air blast between rock inclusions and the surrounding soil and to compare these data with the results of available theories. Results showed that the peak surface overpressure was 515 psi and the maximum relative displacements of the rocks were 0.90, 0.20, and 0.40- inches at the 2-, 3-, and 4-foot depths respectively. The small relative displacement of the three-foot deep rock was caused by soil arching over the rock; for the other rocks the theories predicted relative displacements within 40 percent of the measured values. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1970
- Accession Number
- AD0872810
Entities
People
- Robert J. Odello
Organizations
- Naval Facilities Engineering Service Center