Effects of <i>Y</i>-type spillway lateral contraction ratios on debris-flowpatterns and scour features downriver of a check dam

Chen, Huayong; Liu, Jinfeng; Zhao, Wanyu

doi:https://doi.org/10.5194/nhess-16-2433-2016

Articles | Volume 16, issue 11

https://doi.org/10.5194/nhess-16-2433-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/nhess-16-2433-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 11

Research article

|

28 Nov 2016

Research article |

| 28 Nov 2016

Effects of Y-type spillway lateral contraction ratios on debris-flowpatterns and scour features downriver of a check dam

Huayong Chen, Jinfeng Liu, and Wanyu Zhao

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Final revised paper (published on 28 Nov 2016)
Preprint (discussion started on 27 Jun 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review', Anonymous Referee #1, 12 Jul 2016
AC1: 'Responses to the reviewers' comments', Hu Chen, 10 Aug 2016
RC2: 'minor revisions needed', Anonymous Referee #2, 27 Sep 2016
- AC2: 'Responses to the reviewer's comments', Hu Chen, 07 Oct 2016
  - AC3: 'Responses to the reviewers' comments', Hu Chen, 20 Oct 2016

Short summary

A new type of spillway structure with lateral contraction was proposed to distribute debris flows after the check dam storage filled up. Experiments were performed to investigate debris flow movement, the scour feature, and some related hydraulic characteristics of debris flows under this new structure. The results indicate that this type of structure can help extend debris-flow nappe, dissipate flow energy, and reduce the scour depth downriver of a check dam.