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Mathematical Problems in Engineering
Volume 2015 (2015), Article ID 827816, 11 pages
http://dx.doi.org/10.1155/2015/827816
Research Article

A Cascade-Based Emergency Model for Water Distribution Network

1Department of Construction Management, Beijing Jiaotong University, Beijing 100044, China
2Department of Construction Management, Dalian University of Technology, Dalian, Liaoning 116024, China

Received 24 November 2014; Revised 17 March 2015; Accepted 17 March 2015

Academic Editor: Carlo Cattani

Copyright © 2015 Qing Shuang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Water distribution network is important in the critical physical infrastructure systems. The paper studies the emergency resource strategies on water distribution network with the approach of complex network and cascading failures. The model of cascade-based emergency for water distribution network is built. The cascade-based model considers the network topology analysis and hydraulic analysis to provide a more realistic result. A load redistribution function with emergency recovery mechanisms is established. From the aspects of uniform distribution, node betweenness, and node pressure, six recovery strategies are given to reflect the network topology and the failure information, respectively. The recovery strategies are evaluated with the complex network indicators to describe the failure scale and failure velocity. The proposed method is applied by an illustrative example. The results showed that the recovery strategy considering the node pressure can enhance the network robustness effectively. Besides, this strategy can reduce the failure nodes and generate the least failure nodes per time.