Identifikasi Patahan Menggunakan Analisis Data Deformasi Tanah di Tapak RDE Serpong

Hadi Suntoko, Sriyana Sriyana

DOI: http://dx.doi.org/10.17146/eksplorium.2017.38.2.3352

Sari


Abstrak

Tapak Reaktor Daya Eksperimental (RDE) terletak di Serpong berjarak ± 67 km dari sesar aktif Cimandiri. Hasil evaluasi tapak menunjukkan bahwa tapak RDE layak dan aman dari patahan aktif. Namun, diperlukan pemantauan deformasi batuan menggunakan alat Global Positioning System (GPS). Tujuannya adalah mendapatkan koordinat teliti melalui data GPS untuk mengidentifikasi ada tidaknya aktivitas patahan dan pengaruh patahan terhadap tapak. Pemantauan menggunakan konfigurasi enam titik ukur yang memotong jalur yang diduga sebagai patahan berarah tenggara-baratlaut. Metode penelitian menggunakan pendataan koordinat titik stasiun GPS berkala BATAN dan titik stasiun GPS kontinyu BIG dalam radius 25 km. Pengolahan data menggunakan perangkat lunak Bernese Versi 5.2 dilakukan secara radial dari titik stasiun 1 sebagai titik referensi dan dilanjutkan intepretasi data. Hasil analisis menunjukkan bahwa kondisi patahan/tektonik sekitar tapak RDE berada di kisaran 0,05 mikrostrain yang merupakan daerah dengan kondisi tektonik stabil.

 

Abstract

Experimental Power Reactor (EPR) site is located in Serpong and it has a distance of ± 67 km from the Cimandiri active fault. Result of EPR site evaluation show that it is feasible and safe from the active fault. However, it is necessary to monitor the rock deformation by using Global Positioning System(GPS) tool. The goal is to obtain precise coordinates through GPS data to identify the presence of active fault activity and its impact on the site. The monitoring is using six measuring points configuration mounted crossing the southeast-northwest suppose fault line direction. The research method is using coordinate data collection from BATAN GPS periodic station and BIG GPS continuous station in radius 25 km. Data processing is using Bernese Version 5.2 Software, proceed radially from station 1 as reference point and then continued by data interpretation. The Analysis result shows that the fault/tectonic condition near EPR site is in the range of 0.05 microstrain which is an area with stable tectonic condition.


Kata Kunci


GPS; patahan; evaluasi tapak; deformasi

Teks Lengkap:

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Referensi


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