REPAIR SEQUENCE AND RECOVERY TIME IN WATER DISTRIBUTION NETWORK RESILIENCY

Authors

  • Janice Kaye Aquino Department of Civil Engineering, St. Louis University (Baguio), Philippines
  • Richard De Jesus Department of Civil Engineering, De La Salle University (Manila), Philipines
  • Lessandro Estelito Garciano Department of Civil Engineering, De La Salle University (Manila), Philippines
  • Renan Tanhueco Department of Civil Engineering, De La Salle University (Manila), Philippines
  • Agnes Garciano Department of Mathematics, Ateneo De Manila University, Philippines

Keywords:

Resilience, Horn’s algorithm, Restoration curve, Earthquake, Water distribution network

Abstract

Recent disasters highlighted that Water Distribution Systems (WDS) suffered greatly during
seismic events. But people cannot afford to have extended water service interruption as it is essential for
drinking, sanitation, and health. Thus, it is imperative that WDS provides adequate resistance to extreme events.
And in the event of failure, it must recover back its functionality within short period. Resilience-based
engineering ensures that infrastructures be robust to adequately resist seismic events and recover from failure
fast. It also requires to have resources and redundant systems. This implies that WDS must satisfy resiliency
requirements for it to function satisfactorily during and after seismic events. This study quantifies the resiliency
of La Trinidad Water District (LTWD) through measuring the impacts of restoration sequences to recovery
duration and knowing which sequence satisfies resiliency. LTWD, in Benguet, Philippines, is at risk to
earthquake due to geologic and geographic setting, thus, it must be “resilient”. In this study, restoration
strategies were conducted using constrained spanning trees to determine the most efficient network
connectivity. Horn’s algorithm was applied to find the most efficient repair sequence. Results showed that
restoration sequence is directly related to rapidity of resiliency. The shortest restoration resulted to a faster
recovery to return back to its pre-event system functionality. For LTWD, restoration will take 8.62 days for
full recovery.

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Published

2021-01-28

How to Cite

Janice Kaye Aquino, Richard De Jesus, Lessandro Estelito Garciano, Renan Tanhueco, & Agnes Garciano. (2021). REPAIR SEQUENCE AND RECOVERY TIME IN WATER DISTRIBUTION NETWORK RESILIENCY. GEOMATE Journal, 20(77), 77–83. Retrieved from https://geomatejournal.com/geomate/article/view/324

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