@inproceedings{KoshibaSumiTsutsumietal.2016,
  author    = {Koshiba, T. and Sumi, T. and Tsutsumi, D. and Kantoush, S.A. and Auel, C.},
  title     = {Development of a bedload transport meas-uring system in sediment bypass tunnels},
  series = {84th Annual Meeting of ICOLD, Johannesburg, South Africa 4-49-4-58},
  booktitle = {84th Annual Meeting of ICOLD, Johannesburg, South Africa 4-49-4-58},
  publisher = {ICOLD},
  isbn      = {978-0-620-71042-8},
  doi       = {10.25974/fhms-15150},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-151506},
  year      = {2016},
  abstract  = {Sediment Bypass Tunnels are operated to divert sediment around reservoirs reducing reservoir sedimentation. A major drawback of these tunnels is severe invert abrasion due to high velocity and sediment flows. There is an urgent need to establish innovative measurement systems of sediment transport rates in SBTs. In this paper, three bedload measuring systems, namely hydrophones, geophones, and newly developed plate microphones are introduced and compared. The Koshibu SBT is planned to operate from 2016. Plate microphones combined with geophones and other planned systems are installed in the tunnel. Results of preliminary tests and installation plans of bedload measurement are presented.},
  language  = {en}
}
@inproceedings{KoshibaAuelTsutsumietal.2016,
  author    = {Koshiba, T. and Auel, C. and Tsutsumi, D. and Kantoush, S.A. and Sumi, T.},
  title     = {Improvement of a bedload transport rate measuring systems in sediment bypass tunnels},
  series = {River Sedimentation: Proc. 13th Int. Symposium on River Sedimentation},
  booktitle = {River Sedimentation: Proc. 13th Int. Symposium on River Sedimentation},
  publisher = {CRC Press},
  address   = {Stuttgart, Germany},
  isbn      = {978-1-138-02945-3},
  doi       = {10.25974/fhms-15146},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-151462},
  pages     = {1038 -- 1045},
  year      = {2016},
  abstract  = {For long term use of dams, it is required to develop methods of sediment management in reservoirs. As one method, Sediment BypassTunnels (SBT) are operated in Japan and Switzerland to prevent reservoir sedimentation. SBT reduces sedimentation in reservoirs by routing the incoming sediments around the dam. SBT, however, is prone to severe invert abrasion caused by high sediment flux. Therefore, it is necessary to establish a measurement system of sediment transport rates in the SBT. A geophone was experimentally investigated in a laboratory flume at ETH Zurich. The sediment transport rate is calculated based on the plate vibration caused by hitting of gravels. In this paper, in order to alleviate disadvantages of a geophone, two newly developed sensor systems, a plate microphone and plate vibration sensor, are suggested and the results of their calibration experiments are shown. Finally, they are compared with the existing methods.},
  language  = {en}
}