IDENTIFIKASI GERAKAN TANAH DI DAERAH TINATAH KECAMATAN ALIAN–KEBUMEN
DOI:
https://doi.org/10.34151/technoscientia.v2i2.431Keywords:
Land movement, Creeping, Tinatah, Alian, KebumenAbstract
Land movements in Tinatah, Alian District–Kebumen occured since 2005. Ap-proximately 40 families from 80 families are in high risk when rapid landslides occur in this area. The aim of this study is to identified the high risk and relatively safe areas. The used method was by field survey to obtain natural conditional data, landslide indications, range finder measured to local topographic map, laboratory analysis of engineering properties of soils, and evaluation of potential landslide. The study finds land movements in Tinatah area were caused by lithology of marl-claystone, structural geology of trace of anticline and fault. The low of slope causing land movement very slow with creeping type. The highest risk area is the trace of anticline with marl-claystone lithology (RT 6 RW 2). The more stable locations are the location with calcarenite lithology (RT 8 RW 2) and andesite breccia (Kalinanas). Anticipatory steps that can be done by stabilize of slope, drainage regulation, socialization, relocation to more stable places.
References
Anonim, 2003, Identifikasi Lokasi Rawan Gerakan Tanah dan Longsor di Jawa Timur khususnya di Obyek Wisata dan Pemukiman, Laporan Akhir, Dinas Energi dan Sumber Daya Mineral Propinsi Jawa Timur (tidak dipublikasikan).
Anonim, 2007, Pemetaan Daerah Rawan Bencana Gerakan Tanah Kabupaten Kebumen, Laporan Akhir, Dinas Sumberdaya Air Pertambangan dan Energi Kabupaten Kebumen (tidak dipublikasikan).
Asikin, S., Harsolumakso, A.H., Busono, H., and Gafoer, S., 1992, Geologic Map of Kebumen Quadrangle, Java, scale 1 : 100.000, Geological Research and Develompment Centre, Bandung
Asikin, S., Suyoto, 1994, IPA Post Convention Field Trip, Banyumas Basin, Central Java, Field Trip Guide Book, 31 pp.
Bemmelen, R.W. van, 1949, Geology of Indonesia, Vol. I A, : General Geology, Martinus Nijhof, The Haque, 684p
Karnawati, D., 2001. Gerakan Tanah di Indonesia Dan Upaya Penanggulangannya. Diktat Kuliah Geologi Teknik, Jurusan Teknik Geologi. FT UGM. (tidak dipublikasikan).
Karnawati, D., 2005, Bencana Alam Gerakan Massa tanah di Indonesia dan Upaya Penanggulangannya, Jurusan Teknik Geologi fakultas Teknik Universitas Gadjah mada, Yogyakarta 232 hlm + xvi
Zuidam, R.A. van., 1983, Guide to Geomorphology Arial Photographic Interpretation, ITC, Enchede, The Netherlands.
