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http://dx.doi.org/10.3741/JKWRA.2008.41.2.127

Development of a Decision Making Model for Efficient Rehabilitation of Sewer System  

Lee, Jung-Ho (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Jun, Hwan-Don (Dept. of Civil Engineering, Hanbat National University)
Joo, Jin-Gul (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Kim, Joong-Hoon (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Publication Information
Journal of Korea Water Resources Association / v.41, no.2, 2008 , pp. 127-135 More about this Journal
Abstract
The objective of sewer rehabilitation is to improve its function while eliminating inflow/infiltration (I/I) and insufficient carrying capacity (ICC). Such rehabilitation efforts, however, have not been particularly successful due to a lack of sewer data and unsystematic field practices. The present study aimed to solve these problems by developing a decision making model consisting of two models: the rehabilitation weighting model (RWM) and the rehabilitation priority model (RPM). In RWM, the I/I of each pipe in a drainage district is estimated according to various defects, with each defect given an individual weighting factor using an analytic hierarchy process (AHP). RPM determines the optimal rehabilitation priority (ORP) using a genetic algorithm (GA). The developed models can be used to overcome the problems associated with unsystematic practices and, in practice, as a decision making tool for urban sewer system rehabilitation.
Keywords
rehabilitation priority; decision making; optimal rehabilitation;
Citations & Related Records
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