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JDR Vol.3 No.6 pp. 390-399
(2008)
doi: 10.20965/jdr.2008.p0390

Paper:

An Emergency Restoration Model for Water Supply Network Damage due to Earthquakes

Shigeru Nagata*, Kohei Kageyama**, and Kinya Yamamoto**

*Kajima Technical Research Institute, 2-19-1 Tobitakyu, Chofu-shi, Tokyo 182-0036, Japan

**Risk Management Dept. Engineering & Risk Service Corporation, 7-5-7 Akasaka, Minato-ku, Tokyo 107-0052, Japan

Received:
August 25, 2008
Accepted:
September 14, 2008
Published:
December 1, 2008
Keywords:
earthquake, water supply network, damage estimation, restoration strategy, restoration period
Abstract

In this paper the two analytical models which predict damage, post-earthquake restoration strategies and its period of water supply pipeline network are presented. The detailed model evaluates emergency restoration period of water supply pipeline network using the actual network data and the several restoration strategies that was provided from the experiences of past earthquakes. The simplified model also evaluates restoration period by strategy restoring from the side of distribution reservoir using the 1 km grid data of pipeline length of pipe type and diameter estimated from population data of reference area and water-supply pipeline expansion data. Using actual data of water supply pipeline network of three waterworks bureaus in Japan, we studies the accuracy of grid data of the proposed pipeline length modeling of the simplified model. Finally the efficiency and accuracy of approximate restoration period using the simplified model are confirmed by comparing with the results of two models about damage estimates and restoration periods.

Cite this article as:
Shigeru Nagata, Kohei Kageyama, and Kinya Yamamoto, “An Emergency Restoration Model for Water Supply Network Damage due to Earthquakes,” J. Disaster Res., Vol.3, No.6, pp. 390-399, 2008.
Data files:
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