Cascade Effect Analysis in Torrential Context for Prioritizing Check Dams Maintenance Strategies

Chahrour, Nour; Tacnet, Jean‐Marc; Bérenguer, Christophe

doi:10.1109/rams48097.2021.9605705

“…Other studies were presented in the 60th ESReDA seminar to analyze infrastructure resilience against natural hazards. 30 Also, the resilience of deteriorating debris maintenance System has been modeled by Chahrour et al 31 This study provides a decision-making model to help in the maintenance of systems In general, simulation methods require a lot of time, high cost, and extensive technical, operational, and organizational information and data. Therefore, the implementation of these methods is limited to organizations that have such characteristics.…”

Section: Introductionmentioning

confidence: 99%

A novel index for shearer system resilience in underground coal mines based on the operational environment

Norouzi Masir,

Ataei,

Sereshki

2024

Proceedings of the Institution of Mechanical Engineers, Part O:

0

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The use of resilience during the mining period by guaranteeing the safety and performance of the systems greatly helps the managers and engineers with their decision-making and designing different systems. During the last two decades, various studies have been conducted in this regard. However, the analysis of underground coal mining systems’ resilience has been rarely addressed by these studies. The present study aims to provide a quantitative index for resilience in the environment of underground coal mining operations based on the risk factors. To do so, in a case study of Tabas Mechanized Coal Mine, the Failure of shearer data and the stoppages caused by it (for 2 years and a half, from March 2017 to June 2019) were studied to analyze the system’s resilience. Then, the experts were surveyed. After collecting and categorizing the data, the data analysis calculations were done for indicators of reliability, maintainability, supportability, organizational resilience, PHM system efficiency, and economic resilience. Finally, a new quantitative index named the “Shearer System Resilience Index” was introduced. The results indicated that resilience is reduced over time. They also shows that in order to improve resilience, project managers should pay more attention to these indicators, especially the indicators of maintainability, and organizational resilience. Therefore, regarding the scope of the data investigated in the current study, the use of Failure of Shearer data-based risk factors and experts’ opinions for the analysis of resilience in the case study is strongly recommended.

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“…The main objective of the adaptation was to reduce maintenance costs while maintaining a satisfying protection efficacy. Chahrour et al (2022) developed an integrated approach to optimize maintenance strategies in the case of the initial design of the Claret's retention dam considering only the costs of maintenance. The performed analysis revealed that waiting until the debris basin is almost completely filled, and then cleaning all the stored volume is the mostcost effective strategy.…”

Section: Introductionmentioning

confidence: 99%

Designing Protection Systems in Mountains for Reduced Maintenance Costs; Claret's Retention Dam Case Study

Chahrour,

Piton,

Tacnet

et al. 2022

Book of Extended Abstracts for the 32nd European Safety and Reliability Conference

1

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Debris retention dams are one type of critical protection structures implemented in torrents in order to provide protection against natural phenomena. They mainly aim in moderating, through their openings, the passage of the flow to the downstream where elements at risk are located. This is achieved by storing specific volumes of debris materials in their upstream debris basins and then, eventually, releasing this volume with a lower discharge. The filling of a debris basin by debris material over time, reduces the efficacy of the dam in achieving its functions. Consequently, cleaning maintenance operations of a debris basin should be regularly performed. This necessitates high monetary budgets, which can not be always affordable by the State for the management of protection structures in mountains. This paper proposes a model that makes it possible to model the passage of debris flows through retention dams. The case of the Claret retention dam in France is considered, in which the proposed model is used to analyze the performance of the dam considering its initial and new designs. A numerical analysis, over a period of 50 years, is performed using real data. The obtained results permit the managers of the Claret to figure out which of the designs is more favorable in terms of reducing maintenance costs and in terms of increasing protection efficacy.

show abstract

“…The main objective of the adaptation was to reduce maintenance costs while maintaining a satisfying protection efficacy. Chahrour et al (2022) developed an integrated approach to optimize maintenance strategies in the case of the initial design of the Claret's retention dam considering only the costs of maintenance. The performed analysis revealed that waiting until the debris basin is almost completely filled, and then cleaning all the stored volume is the mostcost effective strategy.…”

Section: Introductionmentioning

confidence: 99%

Designing Protection Systems in Mountains for Reduced Maintenance Costs; Claret's Retention Dam Case Study

Chahrour

¹

,

Piton²,

Tacnet³

et al. 2022

Book of Extended Abstracts for the 32nd European Safety and Reliability Conference

2

0

View full text Add to dashboard Cite

Debris retention dams are one type of critical protection structures implemented in torrents in order to provide protection against natural phenomena. They mainly aim in moderating, through their openings, the passage of the flow to the downstream where elements at risk are located. This is achieved by storing specific volumes of debris materials in their upstream debris basins and then, eventually, releasing this volume with a lower discharge. The filling of a debris basin by debris material over time, reduces the efficacy of the dam in achieving its functions. Consequently, cleaning maintenance operations of a debris basin should be regularly performed. This necessitates high monetary budgets, which can not be always affordable by the State for the management of protection structures in mountains. This paper proposes a model that makes it possible to model the passage of debris flows through retention dams. The case of the Claret retention dam in France is considered, in which the proposed model is used to analyze the performance of the dam considering its initial and new designs. A numerical analysis, over a period of 50 years, is performed using real data. The obtained results permit the managers of the Claret to figure out which of the designs is more favorable in terms of reducing maintenance costs and in terms of increasing protection efficacy.

show abstract

Cascade Effect Analysis in Torrential Context for Prioritizing Check Dams Maintenance Strategies

Cited by 3 publications

References 2 publications

A novel index for shearer system resilience in underground coal mines based on the operational environment

A novel index for shearer system resilience in underground coal mines based on the operational environment

Designing Protection Systems in Mountains for Reduced Maintenance Costs; Claret's Retention Dam Case Study

Designing Protection Systems in Mountains for Reduced Maintenance Costs; Claret's Retention Dam Case Study

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