Current Issues in Rock Dredging

by H. J. Hignett, Camborne Sch of Mines, Cornwall, England,
D. C. Banks, Camborne Sch of Mines, Cornwall, England,

Document Type: Proceeding Paper

Part of: Dredging and Dredged Material Disposal


An attractive alternative to the use of explosives for deepening shipping channels is the improvement of the rock cutter suction dredger. But, assessing the capability and design parameters for a rock cutter suction dredger is a complex subject involving factors such as rock properties, machine compliance, cutting energy and cutter tool life. Moreover, it appears from a literature survey on mechanical dredging in rock, carried out at the US Army Engineer Waterways Experiment Station, that little data exist on which to base sound technical judgment a fact which often leads to many contractual disputes. However, many excavation problems in tunnelling and dredging are inter-related and the elements pertaining to tunnelling excavation may well benefit dredging by technology transfer.

Subject Headings: Rock properties | Rocks | Dredging | Explosions | Freight transportation | Ports and harbors | Parameters (statistics) | Suction | United States

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