Development of an automatic opening pit bedload sampler
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- KIRYU Takeshi
- Fuji Sabo office, Chuubu Regional Development Bureau, Ministry of Land Infrastructure and Transport
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- NAGAI Kenji
- Fuji Sabo office, Chuubu Regional Development Bureau, Ministry of Land Infrastructure and Transport
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- TAKEUCHI Akihiro
- Fuji Sabo office, Chuubu Regional Development Bureau, Ministry of Land Infrastructure and Transport
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- USUKI Nobuhiro
- Asia Air Survey Co., ltd.
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- SANO Hisatoshi
- Asia Air Survey Co., ltd.
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- EGUCHI Tomoaki
- Asia Air Survey Co., ltd.
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- NISHIMURA Naoki
- Asia Air Survey Co., ltd.
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- MIZUYAMA Takahisa
- Division of Forest Science, Graduate School of Agriculture, Kyoto University
Bibliographic Information
- Other Title
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- 自動開口式ピット掃流砂計測装置の開発
- ジドウ カイコウシキ ピットソウリュウサ ケイソク ソウチ ノ カイハツ
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Abstract
In the observation of bed load transport using a hydrophone, a bed load measuring pit is often installed for the calibration of the hydrophone's pulse data. A small pit, however, poses a problem as it tends to fill up before a flood event reaches its peak. Because past observations have revealed a tendency for bed load to exhibit different flow patterns before and after the peak of a flood, we need to establish a relationship between the hydrophone pulses and bed load transport after the peak. For this purpose, a device for measuring bed load transport has been developed with a mechanism that opens the slit of the measuring pit automatically at the peak of a flood. This device uses water-level measurements obtained by an ultrasonic water gauge as a trigger to activate a hydraulic jack which moves the lid installed over the slit so as to allow the pit to start collecting bed load in the middle of a flooding event.
Journal
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- Journal of the Japan Society of Erosion Control Engineering
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Journal of the Japan Society of Erosion Control Engineering 65 (2), 37-39, 2012
Japan Society of Erosion Control Engineering
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Details 詳細情報について
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- CRID
- 1390001205479866496
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- NII Article ID
- 10030773258
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- NII Book ID
- AN0012035X
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- ISSN
- 21874654
- 02868385
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- NDL BIB ID
- 023900455
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed