Pemetaan Utilitas Bawah Permukaan Menggunakan Metode Ground Penetrating Radar dan Pipe Locator Area Pertamina Refinery Unit IV, Cilacap

Nabiilah, Regina (2025) Pemetaan Utilitas Bawah Permukaan Menggunakan Metode Ground Penetrating Radar dan Pipe Locator Area Pertamina Refinery Unit IV, Cilacap. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT Kilang Pertamina Internasional membutuhkan site assessment mengenai kondisi lahan dan jaringan utilitas bawah permukaan area Pertamina RU IV Cilacap dalam rangka upaya pengembangan kilang. Penelitian ini bertujuan untuk mendeteksi dan memetakan utilitas bawah permukaan seperti pipa dan kabel. Pemetaan utilitas menggunakan metode Ground Penetrating Radar (GPR) dan pipe locator. Antena frekuensi GPR yang digunakan sebesar 400 MHz, dengan total 466 lintasan, panjang lintasan GPR terpendek sekitar 3.3m dan lintasan terpanjangnya sekitar 32.8m. Area penelitian ini terbagi dalam 4 area penelitian: Area B, C, D, dan E. Pengolahan data GPR menggunakan beberapa tahapan filter, seperti move start time, bandpass filter, gain, background removal, FK filter, dan time to depth correction. Interpretasi hasil radargram teridentifikasi 2 jenis anomali berbentuk hiperbola yang diduga sebagai pipa dan kabel. Untuk memvalidasi hasil interpretasi data GPR digunakan data pipe locator.
Hasil penelitian menunjukkan keberadaan jalur pipa/kabel di keempat area; pada Area B, ditemukan 9 jalur dengan arah dominan barat-timur, utara-selatan, dan timur laut-barat daya, memiliki kedalaman rata-rata 0,5–0,86 m. Area C ditemukan 5 jalur dengan arah barat-timur dengan kedalaman rata-rata 0,5–1,05 m. Area D ditemukan 4 jalur memiliki arah utara-selatan dengan kedalaman 0,6–1,4 m, sedangkan Area E ditemukan 8 jalur dengan arah utara-selatan dengan kedalaman 0,6–0,9 m.
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PT Pertamina International Refinery requires a site assessment of land conditions and subsurface utility networks in the Pertamina RU IV Cilacap area in the context of refinery development efforts. This research aims to detect and map subsurface utilities such as pipes and cables. Utility mapping uses Ground Penetrating Radar (GPR) and pipe locator methods. The GPR frequency antenna used is 400 MHz, with a total of 466 passes, the shortest GPR pass length is about 3.3m and the longest pass is about 32.8m. The research area is divided into 4 research areas: Area B, C, D, and E. GPR data processing uses several filter stages, such as move start time, bandpass filter, gain, background removal, FK filter, and time to depth correction. Interpretation of radargram results identified 2 types of hyperbola-shaped anomalies suspected to be pipes and cables. To validate the results of GPR data interpretation, pipe locator data was used.
The results showed the presence of pipe/cable lines in all four areas; in Area B, 9 lines were found with the dominant directions of west-east, north-south, and northeast-southwest, having an average depth of 0.5-0.86m. Area C found 5 west-east lines with an average depth of 0.5-1.05m. Area D found 4 lines having a north-south direction with a depth of 0.6-1.4 m, while Area E found 8 north-south lines with a depth of 0.6-0.9m.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Ground Penetrating Radar (GPR), Jaringan Utilitas, Kedalaman Utilitas, Ground Penetrating Radar (GPR), Utility Networks, Utility Depth
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA660.P55 Underground pipeline design, construction and management
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Regina Nabiilah
Date Deposited:	29 Jan 2025 02:02
Last Modified:	29 Jan 2025 02:02
URI:	http://repository.its.ac.id/id/eprint/117041

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