Riverbank stability assessment under flooding conditions in the Red River of Hanoi, Vietnam

Thi Toan Duong, Hideo Komine, Minh Duc Do, Satoshi Murakami

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The literature contains limited information on variations in the factors of safety (FOS) of riverbank stability associated with river water level (RWL) fluctuations. This paper analyses a case study on the portion of the Red River flowing through Hanoi using the finite element method and extending the mechanics of saturated and unsaturated soils to understand how the riverbank's FOS varies with RWL fluctuations. The results show that hydrostatic force is one of the key parameters influencing the FOS when the soil's hydraulic conductivity is less than 10-6m/s. However, the pore-water pressure and rate of RWL change are the key parameters influencing the FOS when the hydraulic conductivity is greater than 10-6m/s. The study also indicates that a surcharge of 50kPa or higher significantly weakens the riverbank stability and influences the FOS when the RWL rises. The construction of residential or other structures without taking special protection measures within 50m of the lateral riverbank should be avoided for safety reasons.

Original languageEnglish
Pages (from-to)178-189
Number of pages12
JournalComputers and Geotechnics
Volume61
DOIs
Publication statusPublished - 2014
Externally publishedYes

    Fingerprint

Keywords

  • Hydraulic conductivity
  • Loading surcharge
  • River water level change
  • Riverbank stability

ASJC Scopus subject areas

  • Computer Science Applications
  • Geotechnical Engineering and Engineering Geology

Cite this