New Total Sediment‐Load Sampler
Publication: Journal of Hydraulic Engineering
Volume 118, Issue 12
Abstract
A new total sediment-load sampler is designed and tested in a flume. The new instrument consists of a bed-load sampler and a suspended-load sampler, both attached to a supporting frame. The suspended-load sampler consists of seven intake nozzles, which are connected to plastic hoses and operated by pumps. The bed-load sampler consists of a nozzle connected to a 150 μm or 240 μm-nylon bag. At the upper side of the bag, a 500 μ nylon patch (0.1×0.15 m2) is present to reduce the blocking effect by fine particles. The bed load sampler is connected to a swing arm, which can move upward and downward to allow good contact between the sampler nozzle and the bed. The hydraulic coefficient of the bed-load sampler is found to be very close to unity for filling percentages of the bag up to 50%. The sampling efficiency of the bed-load sampler is found to be somewhat larger than unity (1.2 to 1.4) at low transport rates (velocity smaller than 0.5 m/s).
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References
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 118 • Issue 12 • December 1992
Pages: 1686 - 1691
Copyright
Copyright © 1992 ASCE.
History
Published online: Dec 1, 1992
Published in print: Dec 1992
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