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Using the DEMATEL-VIKOR Method in Dam Failure Path Identification.

Yantao Zhu1,2,3, Xinqiang Niu4, Chongshi Gu1,2,3

  • 1State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China.

International Journal of Environmental Research and Public Health
|February 29, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for identifying dam failure paths, improving on traditional analyses by considering interdependencies. The research highlights key failure risks in gravity dams, such as inadequate anti-seepage design and corrosion.

Keywords:
DEMATELVIKORdamfailure modefailure path identification

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Area of Science:

  • Civil Engineering
  • Risk Assessment
  • Water Resource Management

Background:

  • Dam failures pose significant economic and environmental risks.
  • Traditional failure mode and effect analysis (FMEA) can be misleading due to unconsidered failure path relationships.

Purpose of the Study:

  • To develop an improved method for identifying and ranking dam failure paths.
  • To address limitations in traditional FMEA by incorporating interdependencies between failure modes.

Main Methods:

  • Modified Failure Mode and Effect Analysis (FMEA) using the Decision Making Trial and Evaluation Laboratory (DEMATEL) method.
  • Integration of fuzzy mathematics and the VIseKOR method for severity evaluation.
  • Application to a case study of a gravity dam in China.

Main Results:

  • Identified and ranked critical initial failure paths for the studied gravity dam.
  • The top two initial failure paths were insufficient upstream anti-seepage design (R6) and defective water-tight screen with corrosion (R7).

Conclusions:

  • The proposed method provides a more robust approach to dam failure path identification.
  • Understanding and addressing the identified critical failure paths are crucial for dam safety and risk mitigation.