Dam's risk identification under interval-valued intuitionistic fuzzy environment

Abstract

This paper uses both fuzzy analytic hierarchy process (FAHP) and the cross entropy of interval-valued intuitionistic fuzzy sets on risk identification of dams. The problem of risk identification can be transformed into a multi-criteria decision-making problem under fuzzy environment. Based on the weight of criteria calculated by the FAHP method and the interval-valued intuitionistic fuzzy information of risk aggregated by geometric average operator, the weight of each alternative can be obtained. The proposed method is used to identify the main risk factors of an earth–rock dam and to rank potential failure modes of the dam. The proposed method takes into account the interval unknown degree (hesitancy degree) in dam safety assessment and it is more effective and accurate in real conditions of dam operation.

Keywords:

• risk identification
• dam's failure modes
• fuzzy analytic hierarchy process
• multi-criteria decision-making
• interval-valued intuitionistic fuzzy sets

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was funded by the China Scholarship Council, the National Natural Science Foundation of China [Grant Nos. 51379068, 51139001, 51279052, 51209077, 51179066, 51079046 and 51079086] and the Program for New Century Excellent Talents in University [Grant Nos. NCET-11-0628, NCET-10-0359].