Untoro Nugroho, FT Teknik Sipil and Rini Kusumawardani, - and Lashari, - (2017) The Triggering Factor of Landslide Phenomenon in Karangkobar, Banjarnegara, Indonesia. International Journal of Sciences and Research, 73 (7). pp. 460-470. ISSN 0032-423X

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Abstract

Banjarnegara district is dominated by hills which have the potential for landslide disaster. Landslide phenomenon occured many times in the Jemblung village, Karangkobar District, Banjarnegara which took many casualties such as loss of sizeable human lives and facilities. Landslide analysis was conducted to examine the factors which caused landslides by checking the supporting data such as topographic maps, geological maps, and rainfall data in Banjarnegara regency. The study was literature review back analysis about landslides in Karangkobar by using analysis Regulation of the Indonesia Minister of Public Works No. 22 / PRT / M / 2007 as disaster mitigation analyses. The level of hazard in the Jemblung village area, Sampang, Banjarnegara was revealed in this paper. This study showed that the main factor causing landslides in Karangkobar especially the village of Sampang was the topography of Sampang village which is located on the steep slopes and rock types which are easily weathered, and high daily rainfall before the landslide. The analyses of the level of hazard revealed the same results that Jemblung was categorized as high landslide hazard level area. Mitigation effort which could be conducted was by giving socialization to the community on appropriate land management, preventing any additional slope load as well as an effort to flatten the existing cracks. Keywords: landslide, topography, rainfall, geologic of soil

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