Fuse plug spillways
Fuse plug spillways.
Hinks, J.and Goff, C.
In: British Dam Society Conference 2018, September 2018, Swansea, UK. (Submitted) (2018)
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|Abstract:||There are fuse plug spillways at many large dams around the world. These may be designed to trigger in floods with return periods of, say, 10,000 years but may also trigger in much smaller floods if these are combined with failure of one or more of the main spillway gates to open. The annual probability of the latter combination may be much higher than that of experiencing a flood with a return period exceeding 10,000 years.
Rubber dams are examples of fuse plugs as are dams of conventional appearance sitting on non-erodible foundations ( whether rock or artificial ). Such dams typically have sloping clay cores resting against erodible downstream shoulders.
Whilst both of the above types of fuse plugs appear simple they require very careful design and, in the case of rubber dams, a high standard of maintenance.
The authors describe some of the fuse plug dams with which they have been involved including a very small one in UK which was built when the landowner downstream refused permission for the reservoir undertaker to build a conventional auxiliary spillway.
There are various alternatives such as tipping gates ( Fusegates ), Flowgates etc. which are well covered in the literature and which are not further discussed in this paper.|
|Item Type:||Conference or Workshop Item (Paper)|
|Subjects:||Floods > Dams and reservoirs|
|Deposited On:||12 Jan 2018 13:07|
|Last Modified:||12 Jan 2018 13:10|
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