Research on the Grey Assessment Method of Dam Failure Risk

2011 ◽  
Vol 474-476 ◽  
pp. 1690-1695
Author(s):  
Ying Jiang ◽  
Qiu Wen Zhang
Keyword(s):  
Safety Assessment ◽  
Disaster Risk ◽  
Assessment Method ◽  
Dam Failure ◽  
Dam Safety ◽  
Grey Theory ◽  
Analytic Hierarchy ◽  
Assessment Index ◽  
Failure Risk ◽  
The World

The dam safety assessment is related with the national economy and the people’s livelihood all the world, so it is important and meaningful to research methods of protecting the safety of dam. The dam failure disaster risk is regarded as main researching object in this thesis. The theories and methods, such as knowledge of dam engineering, risk analysis, analytic hierarchy processing, grey theory and so on, are introduced into the thesis. This research performs relatively detailed study on methods of comprehensive risk assessment, synthesis assessment structure system, and method of measuring assessment index of the dam.

Safety Assessment for Single-Tower Self-Anchored Suspension Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 2738-2741 ◽  
Author(s):  
Xiao Fei Liang ◽  
Ying Chun Fu ◽  
Yue Xu
Keyword(s):  
Risk Factor ◽  
Safety Assessment ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Safety Evaluation ◽  
Suspension Bridge ◽  
Assessment Method ◽  
Grey Theory ◽  
Analytic Hierarchy ◽  
Risk Ranking

Connected with the practical construction and considering Structural properties of single-tower self-anchored suspension bridge, the multi-level safety evaluation model is established according to the main risk factor and weighting rate of risk factor is analyzed by the analytic hierarchy process. A safety assessment method with qualitative analysis and quantitative analysis is proposed based on the grey theory and fuzzy mathematics theory for the practical problem of multi-index comprehensive evaluation, and risk ranking is given.

Assessment Reasearch about Agricultural Water Level

2011 ◽  
Vol 71-78 ◽  
pp. 2479-2482
Author(s):  
Ling Hua Wang ◽  
Rui Lian Wang ◽  
Pan Hua Ning
Keyword(s):  
Analytic Hierarchy Process ◽  
Water Level ◽  
Assessment Method ◽  
Agricultural Water ◽  
Analytic Hierarchy ◽  
Assessment Index ◽  
System Utilization ◽  
Assessment Index System ◽  
Hierarchy Process ◽  
Water Assessment

According to characteristics about the agricultural water, agricultural water level assessment index system was structured, and Analytic Hierarchy Process was used to determine the importance of each hierarchy in the system. The fuzzy scheme optimum method which was adopted to assess the agriculture system utilization water level. So the fuzzy problems about how to use mathematic method to analyse and deal with the agricultural water assessment were solved to a certain extent. The final result of the example indicated that fuzzy comprehension assessment method could reflect utilization water characteristic in different areas and also showed that the method is correct and practical.

A Comprehensive Analysis Method Based on Fuzzy Hierarchy for the Safety Assessment of Overhead Traveling Crane

2010 ◽  
Vol 20-23 ◽  
pp. 196-201
Author(s):  
Ge Ning Xu ◽  
Fan Jiang
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Assessment Model ◽  
Analytic Hierarchy ◽  
Set Up ◽  
Hierarchy Process

By combined fuzzy comprehensive evaluation with AHP (Analytic Hierarchy Process) together, a safety assessment model for overhead traveling crane is set up in regard to deficiency of safety assessment method for crane at present, which can evaluate safety of overhead traveling crane in-service qualitatively and quantitatively. Through a safety analysis and assessment on general overhead traveling crane, the result of assessment is in accord with the practical situation of overhead traveling crane. It can reflect more fully the safety of the whole crane system and the influence and level of each factor to whole crane system safety, witch an effective synthetic evaluation method is put forward for the safety evaluation of crane.

scholarly journals Quantification of climate change impact on dam failure risk under hydrological scenarios: a case study from a Spanish dam

2019 ◽  
Vol 19 (10) ◽  
pp. 2117-2139 ◽  
Author(s):  
Javier Fluixá-Sanmartín ◽  
Adrián Morales-Torres ◽  
Ignacio Escuder-Bueno ◽  
Javier Paredes-Arquiola
Keyword(s):  
Climate Change ◽  
Climate Models ◽  
Safety Management ◽  
Regional Climate ◽  
Regional Climate Models ◽  
Dam Failure ◽  
Dam Safety ◽  
Risk Management Framework ◽  
Failure Risk ◽  
The Individual

Abstract. Dam safety is increasingly subjected to the influence of climate change. Its impacts must be assessed through the integration of the various effects acting on each aspect, considering their interdependencies, rather than just a simple accumulation of separate impacts. This serves as a dam safety management supporting tool to assess the vulnerability of the dam to climate change and to define adaptation strategies under an evolutive dam failure risk management framework. This article presents a comprehensive quantitative assessment of the impacts of climate change on the safety of a Spanish dam under hydrological scenarios, integrating the various projected effects acting on each component of the risk, from the input hydrology to the consequences of the outflow hydrograph. In particular, the results of 21 regional climate models encompassing three Representative Concentration Pathways (RCP2.6, RCP4.5 and RCP8.5) have been used to calculate the risk evolution of the dam until the end of the 21st century. Results show a progressive deterioration of the dam failure risk, for most of the cases contemplated, especially for the RCP2.6 and RCP4.5 scenarios. Moreover, the individual analysis of each risk component shows that the alteration of the expected inflows has the greater influence on the final risk. The approach followed in this paper can serve as a useful guidebook for dam owners and dam safety practitioners in the analysis of other study cases.

Évaluation des conséquences de rupture d'un barrage : calculs détaillés ou méthode simplifiée ?

2005 ◽  
Vol 32 (3) ◽  
pp. 543-552
Author(s):  
C Marche ◽  
Anne Oriac
Keyword(s):  
Safety Assessment ◽  
Hydraulic Calculation ◽  
Dam Failure ◽  
Dam Safety ◽  
Flow Depth ◽  
Dynamic Calculation ◽  
Complete Calculation ◽  
The Cost

Quebec's Dam Safety Act demands a safety assessment for all dams, whatever their capacity. The capacity only affects the detail level of the study to qualify the consequences of a potential dam failure, and thus determine the dam's classification. In practical terms, it is difficult to qualify the consequences of a failure flood if a complete hydraulic calculation of the failure flood is not performed. If consequences are not significant, this complicated specialized work can be deemed unnecessary by the dam owner, who normally has to defray the cost. This paper compares results of a complete dynamic calculation to those of three "simplified" methods. It shows, in two specific cases, that flow depth errors are significant, even after eliminating the greater part of this error generated by the discharge evaluation at the breach. The paper also shows that work involved when using "simplified" methods is not significantly decreased with relation to the work required for the complete calculation when time comes to interpret the data to assess correctly the consequences of a possible dam failure.Key words: dam, rupture, consequences, simplified assessment, complete calculation.[Journal translation]

Assessment System about the Ecosystem Water Based on AHP-FPP

2011 ◽  
Vol 71-78 ◽  
pp. 2483-2486
Author(s):  
Rui Lian Wang ◽  
Chuan Zhang ◽  
Pan Hua Ning
Keyword(s):  
Water Level ◽  
Assessment Method ◽  
Assessment System ◽  
Final Conclusion ◽  
Analytic Hierarchy ◽  
Assessment Index ◽  
Water Based ◽  
Fuzzy Statistics ◽  
Assessment Index System ◽  
Hierarchy Process

According to characteristics about the ecosystem water，the ecosystem water level assessment index system is structured. We put forward Fuzzy Statistics method to quantify the qualitative indexes in the system, using Analytic Hierarchy Process(AHP) to determine the weight of each hierarchy in the system, adopting Fuzzy Preference Process(FPP) to assess the ecosystem water level. The final conclusion of the example indicates that fuzzy comprehension assessment method can reflect utilization water characteristic in different areas and make reasonable comprehension assessment, also show that the method is practical.

scholarly journals Quantification of climate change impact on dam failure risk under hydrological scenarios: a case study from a Spanish dam

2019 ◽  
Author(s):  
Javier Fluixá-Sanmartín ◽  
Adrián Morales-Torres ◽  
Ignacio Escuder-Bueno ◽  
Javier Paredes-Arquiola
Keyword(s):  
Climate Change ◽  
Climate Models ◽  
Safety Management ◽  
Regional Climate ◽  
Regional Climate Models ◽  
Dam Failure ◽  
Dam Safety ◽  
Risk Management Framework ◽  
Failure Risk ◽  
The Individual

Abstract. Dam safety is increasingly subjected to the influence of climate change. Its impacts must be assessed through the integration of the various effects acting on each aspect, considering their interdependencies, rather than by a simple accumulation of separate impacts. This serves as a dam safety management supporting tool to assess the vulnerability of the dam to climate change and to define adaptation strategies under an evolutive dam failure risk management framework. This article presents a comprehensive quantitative assessment of the impacts of climate change on the safety of a Spanish dam under hydrological scenarios, integrating the various projected effects acting on each component of the risk, from the input hydrology to the consequences of the outflow hydrograph. In particular, the results of 21 regional climate models encompassing three Representative Concentration Pathways (RCP2.6, RCP4.5 and RCP8.5) have been used to calculate the risk evolution of the dam until the end of the 21st century. Results show a progressive deterioration of the dam failure risk, for most of the cases contemplated, especially for the RCP2.6 and RCP4.5 scenarios. Moreover, the individual analysis of each risk component shows that the alteration of the expected inflows has the greater influence on the final risk. The approach followed in this paper can serve as a useful guidebook for dam owners and dam safety practitioners in the analysis of other study cases.

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