Multi-Objective Optimization for Urban Drainage or Sewer Networks Rehabilitation through Pipes Substitution and Storage Tanks Installation

Drainage networks are civil constructions which do not generally attract the attention of decision-makers. However, they are of crucial importance for cities; this can be seen when a city faces floods resulting in extensive and expensive damage. The increase of rain intensity due to climate change m...

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Vydáno v:Water (Basel) Ročník 11; číslo 5; s. 935
Hlavní autoři: Ngamalieu-Nengoue, Ulrich A., Martínez-Solano, F. Javier, Iglesias-Rey, Pedro L., Mora-Meliá, Daniel
Médium: Journal Article
Jazyk:angličtina
Vydáno: Basel MDPI AG 03.05.2019
Témata:
algorithms
Best management practices
cities
Climate change
Colombia
Construction costs
decision making
drainage
economic analysis
Flood damage
Floods
Hydraulics
Infrastructure
Linear programming
Optimization
pipes
rain intensity
Rehabilitation
Runoff
Storm damage
storms
Stormwater management
tanks
Urban areas
Colombia
ISSN:2073-4441, 2073-4441
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Shrnutí:Drainage networks are civil constructions which do not generally attract the attention of decision-makers. However, they are of crucial importance for cities; this can be seen when a city faces floods resulting in extensive and expensive damage. The increase of rain intensity due to climate change may cause deficiencies in drainage networks built for certain defined flows which are incapable of coping with sudden increases, leading to floods. This problem can be solved using different strategies; one is the adaptation of the network through rehabilitation. A way to adapt the traditional network approach consists of substituting some pipes for others with greater diameters. More recently, the installation of storm tanks makes it possible to temporarily store excess water. Either of these solutions can be expensive, and an economic analysis must be done. Recent studies have related flooding with damage costs. In this work, a novel solution combining both approaches (pipes and tanks) is studied. A multi-objective optimization algorithm based on the NSGA-II is proposed for the rehabilitation of urban drainage networks through the substitution of pipes and the installation of storage tanks. Installation costs will be offset by damage costs associated with flooding. As a result, a set of optimal solutions that can be implemented based on the objectives to be achieved by municipalities or decisions makers. The methodology is finally applied to a real network located in the city of Bogotá, Colombia.
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ISSN:2073-4441
2073-4441
DOI:10.3390/w11050935