Identification of Cracked Zone in Sutami dam Using Geoelectrical Method

Fina Fitriah, Sunaryo S, Adi Susilo

Abstract

We identified the craked zones based on geoelectrical resistivity method in Sutami Dam. There are four lines measurement of geoelectrical resistivity method with a length of 380-400 meters. The direction of each line is from the northeast to the southwest. All of the tracks are located at the top of Sutami Dam i.e. two tracks in the upstream and the others in the downstream. From the analysis we found that the lithology is detected by geoelectrical resistivty method showed two layers of design of Sutami Dam. The two layers that are detected are transition zone and filter zone. Transition zone consists of sandstone rock containing water (0.922 Ωm-9.57 Ωm) and dry sandstone (>9.57 Ωm-320 Ωm). Filter zone consists of sand (>320 Ωm-4410 Ωm). Cracked zones spread in the upstream, downstream, and roadway at the top of Sutami Dam which are indicated by the presence of low resistivity (0.922 Ωm-9.57 Ωm) based on 3D processing of data of geoelectrical resistivity. The distribution of cracked zone indicates that Sutami Dam is susceptible to ground movement.

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References

Wicaksono, B. A. 2009. Kampung Ledok dihantui Tanah Bergerak. http://malangraya.web.id/2009/02/01/kampung-ledok-dihantui-tanah-bergerak/

Susilo, A., Sunaryo dan Wasis. 2013. Subsurface Structure Prediction of Railroad Tunnel in Malang, Indonesia Based on Dipole-Dipole Geoelectrical Method. Journal of Traffic and Logistic Engineering, Vol. 1, Hal. 238-242.

Chumairoh, I. 2014. Identifikasi Litologi dan Indikasi Patahan Pada Daerah Karangkates Malang Selatan dengan Menggunakan Metode Geolistrik Konfigurasi Dipol-Dipol. Skripsi, Universitas Brawijaya Malang.

Wahyu, D. 2014. Alih Fungsi Lahan Picu Susutnya Umur Waduk. http://surabaya.bisnis.com/read/20140919/4/74650/url.

Sjarifudin, M. Z dan S. Hamidi. 1992. Peta Geologi Lembar Blitar, Jawa. Bandung: Pusat Penelitian dan Pengembangan Geologi.

Sunaryo, dan Susilo, A. 2015. Vulnerability of Karangkates Dams Area by Means of Density Contrast Parameter to Anticipate Energy Sustainability. Proceding of The 5th Annual Basic Science International Conference, Hal. 27-30.

Sunaryo, dan Susilo, A. 2015. Vulnerability of Karangkates Dams Area by Means of Zero Crossing Analysis of Data Magnetic. AIP Conference Proceedings, Hal. 1-8.

Telford, W. M., L. P. Geldart, dan R. E. Sheriff. 1990. Applied Geophysics. New York: Cambridge University Press

Johansson, S. 1997. Seepage Monitoring in Embankment Dams. Disertasi. Royal Institute of Technology Stockholm. Sweden.

Johansson, S. dan Dahlin. 1996. Seepage Monitoring In An Earth Embankment Dam By Repeated Resistivity Measurement. European Journal of Environmental and Engineering Geophysics. Vol 1. Hal. 229-247.

Al-Fares, W. Application of Electrical Resistivity Tomography Technique for Characterizing Leakage Problem in Abu Baara Earth Dam, Syria. International Journal of Geophysics. Vol. 2014. Hal 1-9.

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