Anchoring In Rock - A Preliminary Study
Abstract
This report is a study of the state-of-the-art of anchoring in rock. Included are summaries of the performance of various propellant-actuated embedment anchors, rock bolts, and grouted anchors. Sections are included describing the characteristics and properties of coral and basalt seafloors, and the phenomena associated with rock penetration. Design guidelines for various seafloors are given based upon existing knowledge and experience. In coral or soft rock seafloors, the embedment anchor should be used; in hard, competent rock, rock bolts should be used in shallow water, drilled-in anchors should be used for larger anchors to intermediate depths, and deadweight anchors are the most likely choice in deep water. There is a need for a more viable anchor for hard rock seafloors. Land tests of the embedment anchor in hard rock are recommended to evaluate it as a rock anchor. Interim projectile selection guidelines are given. General guidelines based on operational requirements, available support, and seafloor conditions should be developed in handbook form to aid the designer in choosing an anchor for rock seafloors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1976
- Accession Number
- AD1075971
Entities
People
- J. F. Wadsworth
Organizations
- Naval Facilities Engineering Service Center