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.
Once fully demolished, MMDA said flood control personnel can begin the dredging operations on the waterway which has been clogged with garbage.
Meanwhile, the UAE government has started the second phase of dredging operations in connection with the berth extension project at Saqr Port in Ras Al Khaimah, reported Wam, citing a notice to Mariners issued by the Harbour Master of RAK Ports.
The UAE government has started the second phase of dredging operations in connection with the berth extension project at Saqr Port in the northern emirate of Ras Al Khaimah, reported state news agency Wam, citing a notice to Mariners issued by the Harbour Master of RAK Ports.
The scope of Wrtsils supply, which comprises two 8-cylinder Wrtsil 32 engines specially tuned for dredging operations, two controllable pitch propeller systems, and two tunnel thrusters, provides the required power and manoeuvrability.
During its time, the MRBTF conducted dredging operations in major waterways and also removed tons of water hyacinths that prevented the free flow of the water to the sea.
In 2017, maintenance dredging operations are planned in the Big port Saint-Petersburg at a volume of 152,000 cubic meters and in the Ust-Luga port at 80,000 cubic meters.
We have to sacrifice production if the dredging operations are undertaken where hazardous ordnance are suspected to be present.
This winter we have seen that whilst the Somerset Plain has not been devastated by flooding following these dredging operations, in other parts of the country where no dredging has taken place extensive flooding has been experienced.
In addition to the river dredging operations through NARIL, the company is conducting two small exploratory pilot land operations in the Mazaruni river region of Guyana.
The ocean liner company said that the Queen Mary 2's transit of the Suez Canal has was delayed by around 12 hours due to dredging operations in the Suez Canal, which led to a partial collapse of a precipitation basin, preventing ships from passing through.
Dredging operations often balk at the idea of additional capital expenditure and the associated costs of adding a booster pump to the pipeline.