Abstract
It is an important issue to estimate pipeline damage with high accuarracy and to implement earthquake countermeasures based on it. We analyzed damage factors in a model case of the 2003 Tokachi-Oki Earthquake, and proposed estimation method of water pipe damage by Knowledge discovery in database (KDD) method. Furthermore, the proposed method was applied to the suffered area in the 2004 Niigata Chuetsu earthquake and it was examined its accuracy. Based on the estimation method, damage location can be specified in terms of small mesh of the area.