Model Starlet, suatu Usulan untuk Mitigasi Bencana Longsor dengan Pendekatan Genetika Wilayah (Studi Kasus: Longsoran Citatah, Padalarang, Jawa)

Z. Zakaria

Abstract


DOI: 10.17014/ijog.v5i2.95

Scientists, governments, employers, and communities have the same view on landslide disasters, that is the need to cut losses and to avoid loss of men. To deal with landslide disasters, an understanding of an area is required, especially for mitigation ( limitations and stabilization). To handle the slope - prone to landslides, an integrated approach is needed. A stabilization and integrated design (Starlet model) is a proposal in the handling landslide - prone slopes the integration among: (1) mapping system, (2) slope stability analysis, (3) simulation design of stable slope, and (4) guidance with environmental management along with monitoring. In addition, this also requires the participation of scientists, government officials, communities, and employers in facing these avalanche disasters. Citatah landslides formed a system with the largest to the smallest sizes that is a unity. The landslide in the western part of Pasir Pabeasan (Pasir Pabeasan - Citatah) is a complex one with the type of lateral spread. There are other landslides in the surrounding area, i.e: rock fall, rock toppling, slump, debris slide, and slide. The landslide shows the system and dimensions of landslide from the smallest to the largest one. Slopes in 22.29o to 44.28o should be noted because in general they are critical. They need stabilizations. Landslide area mapping system should consider the genetic region. A terrain genetic map will show areas of terrain genetic unit (TGU) which strongly supports the zoning maps of land movements. Based on terrain
genetic unit (TGU), the Citatah landslides are common at symbol TGU 2331, 2232, locations between 2231 and 2331, locations between 2232 and 2331, and locations between 2233 and 2331, around the intersection of two faults (Cimandiri thrust fault cut by dextral strike - slip fault).


Keywords


model of stabilization; slope design; mitigation; landslides; terrain genetic unit; Citatah Landslide

References


Anwar, H.Z. dan Kesumadharma, S., 1991. Konstruksi Jalan di Daerah Pegunungan Tropis, Makalah Ikatan Ahli Geologi Indonesia, PIT-IAGI ke-20, h. 471- 481.

Bandono, Brahmantyo B., dan Sadisun, I.A., 1998. Kajian teoritis dari beban normal terhadap deformasi batuan yang bersifat plastis - semi plastis. Prosiding PIT- IAGI ke 27, h. 36-39.

Bowles, J.E, 1989. Sifat-sifat Fisik dan Geoteknis Tanah, Erlangga, Jakarta, 562 h.

Brunsden, D., 1993. Mass movement, the research frontier and beyond: a geomorphological approach. Geomorphology, 7, h.85-128. DOI:10.1016/B978-0-444-89971-2.50009-2

Dearman, W.R., 1991. Engineering Geological Mapping, Butterworth-Heinenmann Ltd., 387 h.

Dikau, R., Brunsden, D., Schortt, L., dan Ibsen, M.L. (editors), 1997. Landslide Recognition, Identification, Movement and Causes, John Wiley dan Sons, England, 251 h.

Hirnawan, R.F., 1984. Study of land suitability through identification of engineering characteristics of areas in support of rural and city planning, Indonesia. Dalam: Tan, B.K. dan Rau, J. L. (eds). Landplan II, Role of geology in Planning and Development of Urban Centers in Southeast Asia, AGID, Thailand, h. 25-35.

Hirnawan, R.F. dan Zakaria, Z., 1991. Sikap fisik tanah lapukan breksi volkanik terhadap kadar air sebagai dasar simulasi geometris lereng kupasan stabil di Jatinangor, Kabupaten Sumedang, Jawa Barat, Prosiding Pertemuan Ilmiah Tahunan Ikatan Ahli Geologi Indonesia ke-20, h.553-571.

Hirnawan, R.F., 1993. Ketanggapan Stabilitas Lereng Perbukitan Rawan Gerakan Tanah Atas Tanaman Keras, Hujan dan Gempa, UNPAD, 302 h.

Hirnawan, R. F., 1994. Peran faktor-faktor penentu zona berpotensi longsor dalam mandala geologi dan lingkungan fisiknya di Jawa Barat. Majalah Ilmiah Universitas Padjadjaran, 2 (12), h. 32-42.

Hirnawan, R.F., 2004. Potensi dan Kendala Kewilayahan pada Satuan Genetika Wilayah Berpotensi Sumberdaya Mineral. P3TMB, Badan Diklat ESDM, DESDM, 43 h.

Hunt, R.E., 2007. Geologic hazard, a field guide for geotechnical engineer. CRC Press - Taylor dan Francis Group, 323 h.

Keefer, D.K. dan Johnson, A.M., 1983. Earth flows: morphology, mobilization and movement, Geological Survei Profesional Paper No.1264, Washington, 56 h.

Koesoemadinata, R.P. dan Siregar, S., 1984, Reef Facies Model of The Rajamandala Formation, West Java. Proceedings IPA (Indonesian Petroleum Association, 7 h.

Kompas Cyber Media, 12 Desember 2002. http://www.kompas.com.

Ma’mun dan Suratman, I., 1990. Stabilisasi lempung Bandung menggunakan kapur dan campuran bahan kimia. Prosiding Seminar Rekayasa Fondasi dan Settlement, PAU-Ilmu Rekayasa, ITB, Bandung, 18 h.

Pasuto, A. dan Soldati, M., 1997. Rock Spreading. Dalam Dikau, R., Brunsden, D., Schortt, L., dan Ibsen, M.L. (eds), Landslide Recognition, Identification, Movement and Causes, John Wiley dan Sons, England, h.122 – 136.

Stiady, J., 1995. Geologi dan Geologi Teknik Daerah Citatah dan Sekitarnya, Kecamatan Cipatat, Kabupaten Bandung, Jawa Barat. Tugas Akhir, Jurusan Geologi, Fakultas Teknologi Mineral, Institut Teknologi Bandung, 64 h.

Sudjatmiko, 1972. Peta Geologi Bersistem, Lembar Cianjur - Jawa. Skala 1 : 100.000,Pusat Penelitian dan Pengembangan Geologi, Bandung.

Zakaria, Z., 2000. Peran Identifikasi Longsoran dalam Studi Pendahuluan Pemodelan Sistem Starlet untuk Mitigasi Bencana Longsor. Year Book Mitigasi Bencana 1999, Klp. Mitigasi Bencana, BPPT, h.105 – 123.

Zakaria, Z., 2003. Implikasi Kebencanaan Geologi terhadap Kerusakan Infrastruktur. Year Book Mitigasi Bencana 2002, Kelompok Mitigasi Bencana BPPT, h. 24-42.

Zakaria, Z., 2004. Stabilisasi dan rancang bangun Lereng Terpadu, Salah Satu Usulan untuk Penanganan Masalah Longsor, Buku Permasalahan, Kebijakan dan Penanggulangan Bencana Tanah Longsor di Indonesia, Dalam: Naryanto, H.S., Prawiradisastra, S., dan Marwanta, B. (eds.) 203 hal, Pusat Pengkajian dan Penerapan Teknologi Pengelolaan Sumberdaya Lahan dan Kawasan - BPPT dan Hans Seidel Foundation, Jakarta, h. 77-91.

Zaruba, Q. dan Menel, V., 1979. Landslide and their control. Elsevier (Amsterdam). Academic Prague, 205h.


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