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|Title:||Material properties related to navigation and dredging : summary report for technical area 2|
|Authors:||Dredging Research Program (U.S.)|
Hales, Lyndell Z.
|Keywords:||Acoustic impedance (AI) techniques|
Dredging Research Program
Drilling parameter recorder (DPR)
Point load test
|Publisher:||Coastal Engineering Research Center (U.S.)|
Engineer Research and Development Center (U.S.)
Abstract: This report summarizes research conducted by the Dredging Research Program, Technical Area 2, "Material Properties Related to Navigation and Dredging." Goals of Technical Area 2 were to develop new instrumentation and technology for more thorough subsurface investigations at dredging projects and to refine descriptors for better communication of knowledge from Corps geotechnical engineers to dredging contractors. A geotechnical site-investigation strategy for dredging projects was developed and descriptors were proposed so that engineering properties of bottom sediments could be readily inferred. A drilling parameter recorder and a point load test were developed to reflect operation of a drill rig and characteristics of the formation being drilled. An instrumented towed sled was fabricated which will ride automatically in a channel of fluid mud at the level being defined as navigable, thus serving as prima facie evidence of the navigability of the material. A waterborne seismic acoustic impedance system was developed to rapidly, remotely, and efficiently determine characteristics of subbottom marine sediments as they relate to dredging.
|Appears in Collections:||Technical Report|