Safety assessment of construction and management in underwater drilling and blasting

Chai, Xiuwei; Xu, Yang; Liu, Zhigang

doi:10.1109/aimsec.2011.6010448

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Though all these ill effects cannot be completely eliminated, by using controlled blasting, they can be minimized to acceptable levels. In Chai (2011), it is affirmed that owing to the lower visibility of water and flow velocity, tides, depths, terrain and others, the drilling and blasting of underwater are rather difficult. Simultaneously, the topography and geology of the channel bed are also important, such as the strength and integrity of rock and the gradient of the rock surface.…”

Section: Process Mappingmentioning

confidence: 99%

Remotely operated vehicle-based methodology for the reduction of costs and operational delays associated with rock dredging for channel deepening

Nico

Azevedo

Tomi

2021

HOLOS

View full text Add to dashboard Cite

Rock dredging for river channel deepening presents problems concerning the identification of whether the blasted rock is properly fragmented for the following operations and whether the excavation and disposal reach the determined project level. These issues lead to decision making that involves expensive equipment and vessel movement procedures that can result in an increase in costs and time. After characterizing and analyzing all underwater blasting and rock excavation procedures, a new methodology was developed to improve this process by applying a low-cost observation remotely operated vehicle. The tasks of the vehicle focus on monitoring and controlling some key procedures, improving the operating time and identifying operation fail points, in addition to helping to control the environmental impact. The proposed methodology was tested in São Paulo, Brazil, where the deepening of a river channel has been used to expand the waterway. The results of the tests show a 37% saving in time and a 32% saving in cost

show abstract

Section: Process Mappingmentioning

confidence: 99%