Landslides triggered by the antecedent rainfalls commonly occur in Central Java of Indonesia, particularly within the wettest months of the rainy season. According to the Indonesian Disaster Management Authority (BNPB), about 106 landslides events took place in the first half-year of 2018 in Central Java Province. Such events prominently happened nearby the settlement, causing 27 people dead, 33 injured, hundreds of houses damaged, and hectares of farm fields destroyed. In the mountainous and hilly area of Central Java, consecutive and intense rainfalls not only could trigger landslides but also trigger the opening cracks on the unstable slopes. Such significant cracks in the vicinity of landslides area may be slightly invisible and somehow not carefully considered. Although if detected, several efforts to prevent further slope failure and recurring landslide event from these cracks are carried out. This paper aims to demonstrate how if landslide really occurs from the slope where preceding cracks exist and to analyze its motion behavior. We took a case study of Pasir Panjang landslide in Brebes Regency of Central Java Province. The focal point presented in this paper is the significant cracks that we found at the eastern side from the head scarp of the 22 February 2018 landslide event. These series of cracks have the direction of north-south on the uphill with a length of more than 100 m with the displaced vertical depth varies from 50 cm to more than 1 m. As a result, part of the provincial road appears to be stretched laterally to the east with the opening cracks of more than 1 m. We did site investigation on April and June 2018 by specifically conducting geological observation, measurement and sampling for geotechnical tests in the laboratory. Then, we use the LS-RAPID numerical model to simulate the potential failure of this cracked hill and analyze how far and wide the resulted landslide may flow throughout the vicinity of the area. This study can be considered as mitigation effort for the potential landslide which triggered by antecedent rainfalls particularly in the case of Central Java Province.
Level
Internasional
Status
Dokumen Karya
No
Judul
Tipe Dokumen
Aksi
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Certificate_SLOPE2019_author.pdf
[PAK] Sertifikat Seminar
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Full dokumen.pdf
[PAK] Full Dokumen
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TURNITIN- Analysis of potential landslide and its motion behav.pdf
Cek Similarity
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Organizing Committee_Intl Conference on Landslides and Slope Stability SLOPE 2019.pdf
[PAK] Dokumen Susunan Panitia
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Cover_Intl Conference on Landslides and Slope Stability SLOPE 2019.pdf
Seminar Sampul Prosiding
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Table of Contents_Intl Conference on Landslides and Slope Stability SLOPE 2019.pdf
