Main Article Content
Abstract
ABSTRAK
Tanah gambut merupakan jenis tanah yang tergolong memiliki daya dukung tanah yang lemah. Pendugaan ketebalan tanah gambut telah dilakukan dengan menerapkan metode geolistrik resistivitas. Konfigurasi yang digunakan pada metode ini yaitu konfiguruasi Wenner dengan spasi elektroda terkecil sebesar 3 m. Dalam pendugaan lapisan tanah gambut, lintasan survei geolistrik resistivitas dibuat berjumlah 2 buah lintasan dengan panjang tiap lintasan 72 m dan berjarak 15 m. Data lapangan selanjutnya diolah dan dilakukan inversi sehingga diperoleh penampang resisitivtas 2D lokasi penelitian. Dari penampang resisitivitas 2D, pada lokasi penelitian diduga memiliki rata-rata ketebalan gambut 3 m s.d. 4 m dengan nilai resisitivitas 55,3 ?m s.d. 369 ?m. Setelah lapisan gambut, mulai dari kedalaman 3 m s.d. 10 m diduga lapisan tanah lempung. Informasi ketebalan lapisan tanah gambut dapat dimanfaatkan untuk perencanaan pembangunan khusunya daerah pemukiman dalam proses pembangunan rumah maupun gedung di Kota Pontianak.
Kata kunci— geolistrik, resisitivitas, tanah gambut
ABSTRACT
Peat soil is a type of soil that has a weak soil bearing capacity. The estimation of the thickness of the peat soil can be done by applying the geoelectric resistivity method. The configuration used in this method is the Wenner configuration with the smallest electrode spacing of 3 m. In estimating the peat soil layer, the resistivity geoelectrical survey trajectory is made of 2 tracks with a length of each trajectory of 72 m and a distance of 15 m. The field data is then processed and inverted to obtain a 2D resistivity cross-section of the research location. From the 2D resistivity cross section, the research location is thought to have an average peat thickness of 3 m to 4 m with a resistivity value of 55.3 ?m to 369 ?m. After the peat layer, starting from a depth of 3 m to 10 m, it is assumed to be a layer of clay. Information on the thickness of the peat soil layer can be used for development planning, especially residential areas in the process of building houses and buildings in Pontianak City.
Keywords—geoelectric, resistivity, peat soil
Keywords
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References
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- Yulianto FE. Perilaku Tanah Gambut Berserat Permasalahan dan Solusinya. In: Konferensi Nasional Teknik Sipil dan Infrastruktur-1. Jember: Universitas Jember; 2017. p. G-77-G-86.
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- Islam MS, Hashim R. Bearing Capacity of Stabilised Tropical Peat by Deep Mixing Method. Aust J Basic Appl Sci. 2009;3(2):682–88.
- Mochtar NE, Yulianto FE, S. TR. Pengaruh Usia Stabilisasi pada Tanah Gambut Berserat yang Distabilisasi dengan Campuran CaCO3 dan Pozolan. Jurnal Teknik Sipil. 2014;21(1):57–64.
- Sampurno J, Muid A, Zulfian, Latief FDE. Characterization the Geometry of the Peat Soil of Pontianak Using Fractal Method. J Phys Conf Ser. 2018;1040(1). 1-8
- Dunn IS, Anderson LR, Kiefer FW. Dasar-dasar Analisis Geoteknik. Semarang: IKIP Semarang Press; 2011.
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- Basri K, Wahab N, Talib MKA, Zainorabidin A. Sub-surface Profiling Using Electrical Resistivity Tomography (ERT) with Complement from Peat Sampler. Civ Eng Archit. 2019;7(6A):7–18.
- Hakim H, Manrulu RH. Aplikasi Konfigurasi Wenner dalam Menganalisis Jenis Material Bawah Permukaan. J Ilm Pendidik Fis Al-Biruni. 2016;5(1):95–103.
- Rahmawati D, Zulfian Z. Identifikasi Lapisan Tanah Keras pada Lahan Gambut Menggunakan Metode Geolistrik Tahanan Jenis. Prism Fis. 2020;8(1):45–9.
- Rahma A, Zulfian. Identifikasi Ketebalan Lapisan Tanah Gambut Menggunakan Metode Geolistrik Tahanan Jenis 3D ( Studi Kasus : Daerah Parit Haji Husin II Kecamatan Pontianak Tenggara Kota Pontianak ). Prism Fis. 2020;8(3):221–28.
- Loke MH. Tutorial: 2-D and 3-D Electrical Imaging Surveys, 2004 Revised Edition. 2004.
- Okpoli CC. Sensitivity and Resolution Capacity of Electrode Configurations. Int J Geophys. 2013;2013(00):1–12.
- Agussalim. Aplikasi Metode Resistivitas Konfigurasi Wenner Untuk Menafsirkan Penyebaran Batuan Situs Purbakala Candi Gambar Wetan Kabupaten Blitar. Intitut Teknologi Sepuluh Nopember; 2015.
- Juandi M, Ginting EN. The Groundwater Analysis Using Geoelectric Method Wenner Rules in Rejosari Village, Tenayan Raya Pekanbaru. J Phys Conf Ser. 2021 Oct 25;2049(012064):1–5.
- Afip IA, Taib SNL, Jusoff K, Afip LA. Measurement of Peat Soil Shear Strength Using Wenner Four-Point Probes and Vane Shear Strength Methods. Int J Geophys. 2019;2019:1–12.
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- Telford W, Geldart L, Sheriff R. Applied Geophysics. Second Edi. New York: Cambridge University Press; 1990.
- Dentith M, Mudge S. Geophysics for the Mineral Exploration Geoscientist. United Kingdom: Cambrige University Press; 2014.
- Triadi LB, Simanungkalit P. Monitoring dan Upaya Menegndalikan Muka Air pada Perkebunan di Lahan Rawa Gambut di Indonesia. J Hydraul Eng. 2018;9(1):53–68.
- Huat BBK, Prasad A, Asadi A, Kazemian S. Geotechnics of Organic Soils and Peat. Geotechnics of Organic Soils and Peat. Boca Raton: CRC Press; 2014.
- Andriesse, JP, Tropical Lowland Peats in South-East Asia, Royal Tropical Institute, Amsterdam, dalam dalam Noor M, Masganti, Agus F. Pembentukan dan Karakteristik Gambut Tropika Indonesia. In: Agus F, Anda M, Jamil A, Masganti, editors. Jakarta: IAARD Press; 2014. p. 7-32.
- Rieley J, Page S. Master Plan for the Rehabilitation and Revitalisation of the Ex-Mega Rice Project Area in Central Kalimantan. Jakarta: Euroconsult Mott MacDonald and Delatres; 2008.
- Yulianto FE, Mochtar NE. Behavior of Fibrous Peat Soil Stabilized with Rice Husk Ash (RHA) and Lime. In: Proceedings of 8th International Symposium on Lowland Technology September. Bali, Indonesia; 2012.
- Yan W, Sun J, Zhang J, Yuan W, Zhang L, Cui L, et al. Studies of Electrical Properties of Low-resistivity Sandstones Based on Digital Rock Technology. J Geophys Eng. 2018;15(1):153–63.
References
Purba T, Kilmanun JC. Development Prospect of Aloe Vera Plant in Peatlands in West Kalimantan. J Wetl Environ Manag. 2016;4(1):35–45.
Yulianto FE. Perilaku Tanah Gambut Berserat Permasalahan dan Solusinya. In: Konferensi Nasional Teknik Sipil dan Infrastruktur-1. Jember: Universitas Jember; 2017. p. G-77-G-86.
Pusat Litbang Sumber Daya Air. Teknologi Pondasi Bangunan di Tanah Gambut. Bandung: Pusat Litbang Sumber Daya Air; 2014.
El-Qady G, Metwaly M, El-Galladi A, Ushijima K. Evaluation of Peat Formation Using Geoelectrical Methods at Nile Delta, Egypt. Mem Fac Eng Kyushu Univ. 2005;65(1):1–13.
Islam MS, Hashim R. Bearing Capacity of Stabilised Tropical Peat by Deep Mixing Method. Aust J Basic Appl Sci. 2009;3(2):682–88.
Mochtar NE, Yulianto FE, S. TR. Pengaruh Usia Stabilisasi pada Tanah Gambut Berserat yang Distabilisasi dengan Campuran CaCO3 dan Pozolan. Jurnal Teknik Sipil. 2014;21(1):57–64.
Sampurno J, Muid A, Zulfian, Latief FDE. Characterization the Geometry of the Peat Soil of Pontianak Using Fractal Method. J Phys Conf Ser. 2018;1040(1). 1-8
Dunn IS, Anderson LR, Kiefer FW. Dasar-dasar Analisis Geoteknik. Semarang: IKIP Semarang Press; 2011.
Zulkifley MTM, Ng TF, Raj JK, Hashim R, Ghani A, Shuib MK, et al. Definitions and Engineering Classifications of Tropical Lowland Peats. Bull Eng Geol Environ. 2013;72(3–4):547–53.
Ma’ruf MA, Yulianto FE. Tanah Gambut Berserat: Solusi dan Permasalahannya Dalam Pembangunan Infrastruktur yang Berwawasan Lingkungan. In: Prosiding Seminar Nasional Geoteknik. Banjarmasin: Universitas Lambung Mangkurat; 2016. p. 279–92.
Muliadi M, Zulfian Z, Muhardi M. Identifikasi Ketebalan Tanah Gambut Berdasarkan Nilai Resistivitas 3D: Studi Kasus Daerah Tempat Pembuangan Akhir Batu Layang Kota Pontianak. POSITRON. 2019;9(2):86-94.
Mohamad HM, Kasbi B, Baba M, Adnan Z, Hardianshah S, Ismail S. Investigating Peat Soil Stratigraphy and Marine Clay Formation Using the Geophysical Method in Padas Valley, Northern Borneo. Appl Environ Soil Sci. 2021;2021:1–12.
Basri K, Wahab N, Talib MKA, Zainorabidin A. Sub-surface Profiling Using Electrical Resistivity Tomography (ERT) with Complement from Peat Sampler. Civ Eng Archit. 2019;7(6A):7–18.
Hakim H, Manrulu RH. Aplikasi Konfigurasi Wenner dalam Menganalisis Jenis Material Bawah Permukaan. J Ilm Pendidik Fis Al-Biruni. 2016;5(1):95–103.
Rahmawati D, Zulfian Z. Identifikasi Lapisan Tanah Keras pada Lahan Gambut Menggunakan Metode Geolistrik Tahanan Jenis. Prism Fis. 2020;8(1):45–9.
Rahma A, Zulfian. Identifikasi Ketebalan Lapisan Tanah Gambut Menggunakan Metode Geolistrik Tahanan Jenis 3D ( Studi Kasus : Daerah Parit Haji Husin II Kecamatan Pontianak Tenggara Kota Pontianak ). Prism Fis. 2020;8(3):221–28.
Loke MH. Tutorial: 2-D and 3-D Electrical Imaging Surveys, 2004 Revised Edition. 2004.
Okpoli CC. Sensitivity and Resolution Capacity of Electrode Configurations. Int J Geophys. 2013;2013(00):1–12.
Agussalim. Aplikasi Metode Resistivitas Konfigurasi Wenner Untuk Menafsirkan Penyebaran Batuan Situs Purbakala Candi Gambar Wetan Kabupaten Blitar. Intitut Teknologi Sepuluh Nopember; 2015.
Juandi M, Ginting EN. The Groundwater Analysis Using Geoelectric Method Wenner Rules in Rejosari Village, Tenayan Raya Pekanbaru. J Phys Conf Ser. 2021 Oct 25;2049(012064):1–5.
Afip IA, Taib SNL, Jusoff K, Afip LA. Measurement of Peat Soil Shear Strength Using Wenner Four-Point Probes and Vane Shear Strength Methods. Int J Geophys. 2019;2019:1–12.
Goolge Earth. Lokasi Penelitian di Jalan Perdana, Kota Pontianak [Internet]. Google Earth. 2022 [cited 2022 May 6]. Available from: https://earth.google.com/web/@-0.07223517,109.33279604,6.58611752a,1111.92502571d,35y,0h,0t,0r
Telford W, Geldart L, Sheriff R. Applied Geophysics. Second Edi. New York: Cambridge University Press; 1990.
Dentith M, Mudge S. Geophysics for the Mineral Exploration Geoscientist. United Kingdom: Cambrige University Press; 2014.
Triadi LB, Simanungkalit P. Monitoring dan Upaya Menegndalikan Muka Air pada Perkebunan di Lahan Rawa Gambut di Indonesia. J Hydraul Eng. 2018;9(1):53–68.
Huat BBK, Prasad A, Asadi A, Kazemian S. Geotechnics of Organic Soils and Peat. Geotechnics of Organic Soils and Peat. Boca Raton: CRC Press; 2014.
Andriesse, JP, Tropical Lowland Peats in South-East Asia, Royal Tropical Institute, Amsterdam, dalam dalam Noor M, Masganti, Agus F. Pembentukan dan Karakteristik Gambut Tropika Indonesia. In: Agus F, Anda M, Jamil A, Masganti, editors. Jakarta: IAARD Press; 2014. p. 7-32.
Rieley J, Page S. Master Plan for the Rehabilitation and Revitalisation of the Ex-Mega Rice Project Area in Central Kalimantan. Jakarta: Euroconsult Mott MacDonald and Delatres; 2008.
Yulianto FE, Mochtar NE. Behavior of Fibrous Peat Soil Stabilized with Rice Husk Ash (RHA) and Lime. In: Proceedings of 8th International Symposium on Lowland Technology September. Bali, Indonesia; 2012.
Yan W, Sun J, Zhang J, Yuan W, Zhang L, Cui L, et al. Studies of Electrical Properties of Low-resistivity Sandstones Based on Digital Rock Technology. J Geophys Eng. 2018;15(1):153–63.