Dredging Operations

Dredging Operations

 

the deepening and widening of reservoirs and water courses by excavation (dredging). A distinction is made between capital dredging operations, which are performed during the construction of hydraulic-engineering projects and for the improvement of navigation conditions on waterways, and maintenance dredging operations, which are conducted annually for the removal of debris that disrupts the normal use of hydraulic-engineering structures and navigation routes. The greatest volume of dredging work is done on inland waterways (rivers, reservoirs, and channels), where dredging is used to increase the depth and width of shipping lanes. Seaports and river ports are dredged in order to deepen and widen their water areas to provide mooring access for loaded vessels. Dredging is used for the removal of silt and mud in channel and lake reclamation. It is performed to deepen water-supply canals to individual industrial enterprises and the bottom of water intake works, for the excavation of underwater trenches, and the laying of pipelines and cables.

Dredging is performed mainly by dredging vessels, or dredgers. Dredging of rocky bottoms is usually done by blasting operations.

N. N. PASHKOV

References in classic literature ?
There was a shallow bar at the mouth of the river which ought to have been kept down, but the authorities of the State were piously busy gilding afresh the great Buddhist Pagoda just then, and I suppose had no money to spare for dredging operations.
The modernization covers construction of a modern passenger terminal and other facilities, acquisition of heavy equipment, dredging operations and acquisition of other equally important equipment such as modern computers to ensure the smooth flow of cargo and passengers.
Internationally, Anglo Swiss is mobilizing for departure on August 15, 1996, to commence dredging operations to further evaluate the production potential of placer gold operations on mineral concessions held by the Company, on the Catamayo River in southern Ecuador.
Scour pools associated with the dykes present have a tendency to deliver high gold grades which is proven to exist in the region by past river dredging operations showing high production.
A bollard pull of 55 tonnes yet a draft of less the three metres will make it invaluable for heavy towage in shallow waters, as will its ability to carry up to seven (20 TEU) standard containers, facilitate diving, survey and dredging operations and much more besides.
This framework agreement concerns the dredging works on all streams or lakes managed by the Grand Lyon, the bathymetric surveys before and after dredging operations or for the preparation of certain projects and the use of various means of transport and works on rivers (barges, dredger, construction machinery such as cranes, excavators, dump trucks .
Under the supervision of the CPDM (Department of Mining), a team of geologists, engineers, divers and crew members are in the field to evaluate the Company's significant mining properties and to determine the best mineral sites to initiate African Resources' dredging operations.
Contract award: supply and installation of a complete positioning system of the dredge avalis ii real-time processing of the data in the context of dredging operations.
Project sites have included rivers and lakes associated with nuclear power plants, oil spills, landfills, hydroelectric plants, dredging operations and Superfund sites.
The Shark has been qualified by the Bluetooth SIG as a Class 1 communication product and is currently in use at multiple environmental sites, including government water monitoring installations, commercial maritime and shipboard installations, and dredging operations.
Tejucana undertook dredging operations along the Jequitinhonha River for over 20 years treating up to 6.
Large scale river dredging operations have been conducted both upstream and downstream of the Duas Barras property.