Seite - 1327 - in Book of Full Papers - Symposium Hydro Engineering

Figure 1. Epicenters and Damage due to earthquake (Source : www.arirang.com & www.ytn.co.kr) Gyeongju is one of cities that retain many historical and cultural heritages. Many structures having ancient traditional style are in this region but some of them were damaged by earthquake. Therefore, KISTEC (Korea Infrastructure Safety & Technology Corporation) thought that main infrastructure near Gyeongju were influenced by earthquake and they performed urgent inspection for a dam which is not far from epicenter. As a part of dam inspection, the behaviors of a dam were analyzed by comparing with the real-time measured data for before and after earthquake. In order to perform behavior analysis, displacement and leakage measuring data were selected among entire measuring data. Because these systems are very important for management of type of fill dam and considered to have a relatively high reliability. Table 2 and Figure 2 show specification of subject dam. Type of Subject dam is C.F.R.D (Concrete Faced Rock fill Dam), operating beginning year is December in 2005 and built purpose of dam is water supply. This paper shows the results of this analysis and overall conclusions for inspection of a dam after earthquake. Table 2. Main specification of the subject dam Dam Type Concrete Faced Rock fill Dam Spillway Type Radial Gate (3-Gate) Purpose water supply Weir crest EL.117.5 m Length 192 m Length 206.5 m Height 52 m Designed discharge 1,840 m3 /sec Volume 528,000 m3 Crest EL.126.8 m Intake facility Type Surface intake Slope Upstream : 1:1.4 Downstream : 1:1.8 Scale D : 4.0 m H : 39.3 m 1327