Identifikasi Karakteristik dan Faktor Pengaruh pada Berbagai Tipe Longsor

Abstract

Landslide disaster mitigation is necessary in areas vulnerable to this disaster. Banjarnegara is one of the regencies in Central Java Province with high ground movement potential, hence, it is prone to landslides. The aim of this study was to determine the characteristics and factors that influence the type of landslides in Banjarnegara District. The observation of the research was based on the results of landslide vulnerability analysis. Identification of the landslides characteristics, both in types and factors that influence them, are carried out by a survey method with a purposive random sampling technique by considering the locations that have experienced landslides, and the level of vulnerability to landslides. The survey was conducted using a landslide control card (KKL) which was compiled based on the factors that cause landslides. Scoring was done to determine the determinants of the landslide type quantitatively, on a scale of 1 to 5. The results showed that there were three types of landslides found in the study location, namely rotational slide, creep slide and flows. Factors that influenced rotational slide in the study site were slope, soil depth, faults, and infrastructure, while for creep slide were faults, slope, length of slope, and infrastructure. In addition, flows were affected by faults and infrastructure. The highest KKL value was 77 in the rotation landslide type and the lowest was 51 in the creep landslide type. Rainfall is also a trigger factor for the three types of landslides. It is highly recommended to do technical mitigation by observing the principles of soil and water conservation and high adaptation to the people living in this area.

Spatial Mapping of Landslide Susceptibility Level in Pacitan District Using Analytical Hierarchy Process and Natural Break

“…Fenomena alam tanah longsor menyebabkan gerakan massa tanah, batuan atau kombinasinya yang sering terjadi pada daerah dengan lereng-lereng alam atau buatan [3]. Selain korban jiwa, bencana yang mengakibatkan kerugian secara ekonomi [4], misalkan kerusakan rumah dan fasilitas umum, serta jalur distribusi.…”

“…(Sumber: Data Informasi Bencana Indonesia BNPB) Banyaknya korban jiwa, harta serta kerusakan lingkungan karena bencana longsor menggambarkan kurangnya kesiap-siagaan dan antisipasi masyarakat di sekitar daerah rawan bencana [4]. Kesiapsiagaan bencana sangat diperlukan bagi masyarakat luas dalam menghadapi Terbit online pada laman web: https://journal.unilak.ac.id/index.php/dz Title of manuscript is short and clear, implies research results (First Author) ◼57 situasi tanggap darurat tanah longsor.…”

Simulasi Pengukuran Longsor Pada Kelerengan Dan Kedalaman Bidang Gelincir Yang Berbeda

“…Lahan dengan lereng curam memiliki kecepatan aliran air yang tinggi menyebabkan lahan lebih cepat dipenuhi air sehingga menyebabkan kandungan air tanah meningkat dan berpotensi longsor. Longsor dapat terjadi apabila kandungan air meningkat, hal ini disebabkan adanya pertambahan massa tanah dan dapat melemahkan ikatan antar partikel tanah (Susanti dan Miardini, 2019). Besar kemiringan lereng juga berpengaruh terhadap kondisi kritis lereng yang berpengaruh juga pada waktu terjadinya longsor.…”

Analysis of Landslides Causes on Bts. Kota Batu - Bts. Kab. Kediri Road

“…The selection of countermeasures is adjusted to the situation and conditions in the field. One way to find out the landslide area is to conduct a survey using the Landslide Control Card (KKL) which is compiled based on the the parameters of the factors causing landslides [13]. Factors such as the existing location, slope topography, geology, soil material conditions, and costs are taken into consideration in determining the type of countermeasure.…”