Analisis Stabilitas Lereng Bendungan Terhadap Beban Gempa sebagai Upaya Pengurangan Bencana (Studi Kasus: Bendungan Jlantah)

Indonesia is a country that has quite high seismic activity and prone to earthquake hazards, so the construction of embankment dams in needs pay attention stability against collapse due soil mass loads. Jlantah dam located Karanganyar, Central Java. This planned for irrigation 1493 hectares raw water 150 liters/second. study aims determine safety factor (Fs) on Dam body. The method used quantitative data analysis method, calculation coefficient corrected by OBE MDE, carried out with help computer program, namely GeoStudio 2012. Meanwhile, if known not be Fs 1.5. based references from KP 02-Planning Criteria Main Building Section 06-Planning Parameters Section, Pd T-14-2004-A. terms (Fs 1,2) which are as theoretical basis quoted theory Prof. Hoek (1981) stated knowing coefficient, 1.2 can used, while 1.5 Analysis Earthquake Backfill Type Stability. From results study, it was found at time maximum road body declared good structural failure. bottom MDE conditions level obtained Fk > 1.0 minimum, 1, 2 minimum conditions.