Raharjo, Sugeng and Teguh Paripurno, Eko and Hartadi, Joko and Dewi Alfiani, Oktavia and Widyastuti, Megasari and Mardziah, Muflichatul (2019) Landslide Zoning and Mitigation in Clapar Area, Madukara District, Banjarnegara Regency, Central Java. In: IIGC 2017, IOP Conference Series: Earth and Environmental Science, 2019, Canada.
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Abstract
Landslide disaster is one of the most frequent disasters in Clapar,
Banjarnegara. Landslide is a recurring event and there is no suitable method to respond
the threat until now, so that preventive stage have not been maximized. The scienstist
explains that the movement of land in the area is very active, but the level of activity
that can cause landslides can’t be known qualitatively or quantitatively. The method that
used to achieving these purposes is geology and landscape morphology mapping in areas
that have been and have possibility landslide disaster. Factors that controls the landslide
motion are geomorphology, rock type, geological structure and land use, while the
triggers are water infiltration and rock fractures. Slope in Clapar is 30 - 70% and the rock
type is clay with quarzite and chert fragments from Totogan Formation, volcanic breccia
from Tapak Formation, and polimictic breccia from Ligung Formation. Geological
structure that found is right slip fault (Rickard, 1972) with the strike and dip of fault is N
359oE/79o. The land usage are pine forest, salak farm, and settlement. Angle of shear
strength from direct shear test soil sample in Clapar slope is 27o with safety factor value
is 1.045 included in the critical class. According to those existing datas, Clapar included
into area that are very vulnerable to landslides. It is because this area was affected by
major slip fault and steep angle. The most land usages is salak farms which is the plants
has fibrous root that control the properties of soil. It makes the water easily infiltrate into
the soil that causes increase the weight of the soil and make the plane become slippery.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjek: | Q Science > QE Geology |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Dr..Ir. MT Sugeng Raharjo |
| Date Deposited: | 01 Mar 2022 03:48 |
| Last Modified: | 01 Mar 2022 03:52 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/27517 |
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