The role of demolition in dam rehabilitation
 | The role of demolition in dam rehabilitation_approved | 26.97 KB | Download |
 Preview | At Hazelmere, the existing spillway crest, piers, lintel beam, and bridge decks were demolished. | 2.84 MB | Download |
 Preview | Hazelmere Dam saw the compilation of specific demolition-control guidelines. | 1.49 MB | Download |
 Preview | Jet Demolition Contracts and Project Manager Kate Bester | 395.2 KB | Download |
 Preview | Jet Demolition has developed new blasting techniques to retain the structural stability of dams. | 5.95 MB | Download |
 Preview | The Full Supply Level (FSL) of Hazelmere Dam was raised by replacing the original Radial Arm Gate design with a Piano Key Weir. | 1.82 MB | Download |
In other instances, reducing the height or capacity of a dam wall could be necessary to restore a river or waterway to its natural state or accommodate changing land-use patterns. Older dams may have outlived their original purpose or been rendered obsolete by advancing technology. Here it could be more cost-effective to demolish a dam wall than to maintain it.
Refined blasting techniques have been developed specifically to retain the structural stability of dams themselves, with no wasted effort. Such projects call for highly controlled, cautious, partial demolition techniques. “Our work on large water-retaining dams consists some of the most important projects we have undertaken to date,” comments Jet Demolition Contracts and Project Manager Kate Bester.
Rehabilitation of dam walls usually requires demolition of redundant portions of monolithic blocks and associated concrete structures. Dynamic energy imparted by the demolition process has the potential to cause damage to concrete located just across the demolition boundaries and beyond. While it is essential to avoid damage to remaining concrete, it is also important to carry out the demolition works in a productive and cost-effective manner.
Informed and judicious selection of demolition methods and their application techniques are vital to a controlled and productive project, which is where Jet Demolition’s extensive experience stands it in good stead. Dam demolition calls for meticulous planning and execution to minimise the environmental impact, especially releasing debris and sediment downstream.
Demolition techniques range from controlled explosives to cutting or breaking the dam wall into sections so the material can be removed. Following demolition, the site can be restored to its natural state or repurposed for recreational use or hydroelectric power generation.
Pull quote
“Our work on large water-retaining dams consists some of the most important projects we have undertaken to date.” – Kate Bester, Contracts and Project Manager, Jet Demolition
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#JetDemolition refines its blasting techniques specifically to retain the structural stability of dams themselves, with no wasted effort.
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Notes to the Editor
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About Jet Demolition
Jet Demolition has been undertaking industrial demolition works since 1994, and is the leading, largest, and most technically advanced demolition company in Africa. It offers in-house, full-range demolition services, including advanced mechanical solutions and controlled implosions. It actively pursues ongoing development of skills and equipment suited to the changing needs of the industry.
Jet Demolition is a technically based company, with various staff members holding MSc, BSc, and BTech Degrees, as well as National Diplomas, in various engineering fields. This expertise gives it the technical foundation to successfully engineer solutions for large and complex demolition projects, and furthermore fuels its drive to deliver quality projects safely. Jet Demolition strives to offer its clients innovative and technical solutions to demanding demolition challenges.
Jet Demolition Contact
Kate Bester (N.Dip. Civil Engineering, PMP)
Contracts and Project Manager
Phone: (011) 495 3800
Cell: 072 811 5310
Email: kate [at] jetdemolition [dot] co [dot] za
Media Contact
Rachel Mekgwe
NGAGE Public Relations
Phone: (011) 867 7763
Fax: 086 512 3352
Cell: 074 212 1422
Email: rachel [at] ngage [dot] co [dot] za
Web: www.ngage.co.za
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