Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 31, No. 8 (August 2018) 1180-1186    Article in Press

PDF URL: http://www.ije.ir/Vol31/No8/B/4-2857.pdf  
downloaded Downloaded: 50   viewed Viewed: 217

  SEISMICITY OF BATUBESI DAM AT SOROWAKO REGION BASED ON EARTHQUAKE DATA AND MICROTREMOR MEASUREMENT
 
W. Haryanto, A. Prasetio, A. Mulyo and Z. Zakaria
 
( Received: January 23, 2018 – Accepted in Revised Form: February 08, 2018 )
 
 

Abstract    Batubesi Dam which is located in Sorowako region in the middle part of Sulawesi island had been designed with seismic coefficient about 0.20g. The region constitutes an active earthquake zone with the recurrence frequency and magnitude of the earthquake are relatively high. The region is located on and active fault zone due to lateral fault movement (strike-slip) of Matano fault, Palukoro fault, and Walanea fault that categorized as shallow crustal earthquakes. To recognize characteristic of the earthquake at the site of interest, the historical earthquakes (background) data surrounding the study area and local microtremor measurements data are analyzed by means of a probabilistic seismic hazard analysis (PSHA) and deterministic seismic hazard analysis (DSHA) using some ground-motion models in attenuation relationship equations in resulting of seismic hazard parameter as represented by peak ground acceleration (PGA) values in earthquake scenario at operating basis earthquake (OBE), maximum design earthquake (MDE), and maximum credible earthquake (MCE) conditions. The PGA value in OBE condition is about 0.35g, in MDE about 0.45g, and in MCE about 0.49g. These values are used as reference to evaluate compliance of the current technical aspects with the new required design facing the updated seismicity parameters.

 

Keywords    seismicity, seismic hazard analysis (SHA), peak ground acceleration (PGA), operating basis earthquake (OBE), maximum design earthquake (MDE), maximum credible earthquake (MCE).

 

چکیده    سد Batubesi که در منطقه Sorowako در وسط جزیره سولاوسی واقع شده است با ضریب لرزه ای حدود g 0.20 طراحی شده است. این ناحیه یک منطقه فعال زلزله است با فراوانی تکرار و بزرگی زلزله نسبتا زیاد است. منطقه بر اساس منطقه گسل فعال و به علت حرکت خطای جانبی (لغزش اعتصاب) گسل Matano، خطا Palukoro، و گسل Walanea که به عنوان زمین لرزه های کم عمق پوسته طبقه بندی شده است. برای شناسایی ویژگی های زلزله در سایت مورد علاقه، داده های زلزله تاریخی (پس زمینه) اطراف منطقه مطالعه و داده های اندازه گیری های میکروترمور محلی با استفاده از تجزیه و تحلیل خطر لرزه ای احتمالی (PSHA) و تجزیه و تحلیل خطرات لرزه ای قطعی (DSHA) با استفاده از برخی از مدل های حرکتی زمینی در معادلات ارتباطی ضعیف بوده، در نتیجه پارامتر خطر لرزه ای به عنوان نشان دهنده ارزش PGA در سناریوی زلزله در زمین لرزه عملیاتی (OBE)، حداکثر زلزله طراحی (MDE) و حداکثر زلزله قابل اعتماد (MCE) شرایط مقدار PGA در شرایط OBE حدود g 0.35، در MDE حدود g 0.45 و در MCE حدود g 0.49 است. این مقادیر به عنوان مرجع برای ارزیابی انطباق جنبه های فنی فعلی با طراحی جدید مورد نیاز با پارامترهای لرزه ای به روز شده مورد استفاده قرار می گیرند.

References   

1      Kertapati, E.K., Setiawan, Y.B., Ipranta, “Earthquake Hazard Map of Indonesia”, Geological Research and Development Center, Ministry of Mining and Energy, Bandung, Indonesia, (1999).

2      Wangsadinata, W, “Seismic Resistant Design Standard for Building Structure”, Ministry of Settlement and Regional Infrastructure, Bandung, Indonesia, (2002).

3      Irsyam, M., Sengara, W., Aldiamar, F., Widi-yantoro, S., Triyoso, W., Hilman, D., Kertapati, E.K., Meilano, I., Asrurifak, M., Ridwan, M., Suhardjono, “Earthquake Hazard Map of Indonesia 2010 as Reference for Engineering and Design of Earthquake Resistant Infrastructures”, Ministry of Public Work, Jakarta, Indonesia, (2010).

4      Irsyam, M. Widiyantoro, S., Natawidjaja, D.H., Meilano, I., Rudyanto, A., Hidayati, S., Triyoso, W., Hanifa, N.R., Djarwadi, D., Sunarjito, L.F., “Sources and Earthquake Hazard Map of Indonesia 2017”, ISBN No. 978-602-5489-01-3, National Earthquake Study Center, Ministry of Public Work and Housing, Bandung, Indonesia, (2017).

5      Cipta, A., Robiana, R., Griffin, J.D., Horspool, N., Hidayati, S., Cummins, P., “A Probabilistic Seismic Hazard Assessment for Sulawesi, Indonesia”, the Geological Society of London, Special Publication, 441, April 26, (2016) http://sp.lyellcollection.org, [Online]. Available: http://doi.org/10.1144/SP441.6  [Accessed: Sept. 4, 2017].

6      Douglas, J., “Ground-Motion Prediction Equations 1964-2010”, BRGM Geoscience for a Sustainable Earth, BRGM/RP-59356-FR, February, (2011).

7      Nakamura, Y., “A Method for Dynamic Characteristic Estimation of Subsurface Using Microtremor on the Ground Surface”. Q.R. of R.T.I. 30-1, p. 25-33. (1989).

8      Jitno, H., “Short Course on Seismic Design of Earth and Rockfill Dams”. Inter-University Center, Intitut Teknologi Bandung, Bandung, Indonesia, (2016), unpublished.  

9      Lunga, S., Minarto, E., Mantiri, S.Y.Y., “The Earthquake Risk Level Mapping at Jayapura City Based on Microtremor Measurement”, Spektra: Physics and Its Application Journal, Institut Teknologi Sepuluh November, Surabaya, Indonesia, Vol. 16, No. 1, June (2015).

 

 


Download PDF 



International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir