Analisis Penyebab Tanah Longsor di Kalitlaga Banjarnegara
Abstract: Indonesia is one
country that has many areas vulnerable to landslides. To the present time,
there are many victims of disasters caused by landslides in Indonesia. To
handle the landslide disaster, requires some knowledge about the causes,
mechanisms and appropriate mitigation efforts against disasters mentioned
above. Causes and mechanisms of landslides is necessary in determining the mitigation in order to the victim can be
minimized.
This paper is an analytical study of the causes of landslides at
Kalitlaga Village, Pagentan Sub district, Banjarnegara Regency. Causes of landslides determined by analyzing the
results of field investigation and supporting data (topographic and geological
maps at the research location). The analysis results, also be used to determine
the proper method of handling landslides in the area. Based on the results
investigation field, it can be concluded that the main cause of landslides at
Kalitlaga is topographic factors. Kalitlaga Village is located in the mountain
range with a fairly steep slope ranges from 20o - 45o. The other cause of
landslides is a poor drainage system in the village. Besides, based on
geological maps, geological structure in the area included breksi rock in tapak
formation, which has a sandstone soil type, breksi andesite composition and the
organic soil. The characteristics of this soil type have a low cohesion value
with a high permeability, so that condition also supports the occurrence of
landslides. Kalitlaga landslide in the village can be minimized by manage the
drainage system. Besides, efforts such as cutting of the slopes also need to be
done at some location.
Penulis: Arwan Apriyono
Kode Jurnal: jptindustridd090067
