LUMPING PROCESS OF UNSATURATED FLOW EQUATIONS CONSIDERING INFILTRATION LOSS

• Hatta Shigemi

  JAPAN SOCIETY OF CIVIL ENGINEERS

• Fujita Mutsuhiro

  JAPAN SOCIETY OF CIVIL ENGINEERS

• Yamanashi Mitsunori

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 損失を考慮した不飽和浸透理論の集中化
• ソンシツ オ コウリョ シタ フホウワ シントウ リロン ノ シュウチュウカ

Abstract

The way of estimating effective rainfall is an important unsolved problems in flood runoff analysis. This paper consists of three parts. The first explains how to introduce the new boundary conditions into unsaturated flow equations under which infiltration into the deep soil layer occurs. In the second part, the authors estimate the effective rainfall based on other runoff models such as the tank model and the entropy method, and compare results from the first and second parts. Finally, the authors derive a lumped model based on unsaturated flow theory. The proposed lumped model can yield the infiltration loss into the deep soil layer, and all parameters of the model are identified based on soil characteristics and basin topology.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 1998 (600), 11-21, 1998-08-21

  Japan Society of Civil Engineers

Keywords

• deep percolation
• unsaturated flow theory
• lumping process
• storage routing model

Details

• CRID: 1390001205308721408
• NII Article ID: 130003983073
• NII Article ID: 10007568196
• NII Article ID: 10001887050
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.1998.600_11
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 4551480
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4551480
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1998/600/1998_600_11/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed