Abstract
Tui Hill is a limestone hill lined south of Padang Panjang, located between Rao-Rao Village to Tanah Hitam. The results of research at Tui Hill at the location S0° 28’ 50.23” E100° 24’ 16.89”- S0° 28’ 49.19” E100° 24’ 17.07” located in Tanah Hitam Village has a covered dolomite rock slope. Based on the Indonesian earthquake zoning map, the city of Padang Panjang is classified as a high earthquake vibration zone, ranging from 0.8-0.9 g. The potential for landslides on the slopes of the study can lead to the closure of the access road to dolomite mining so that it can hamper road user traffic and disrupt mining production as well as potential material losses and fatalities This study aims to determine the Safety Factors on earthquake slope research and recommendations to increase the value of Safety Factors (FK). Based on the results of the analysis by simulating earthquake vibration values the maximum earthquake vibration values that can be held by slopes in a safe condition is 0.2 g or equivalent to 6.4-6.6 on the Richter Scale, namely with FK of 1,281. Then, the author issued for the slope by changing the slope of the slope from 53˚ to 25˚ increases can obtain a slope FK value of 1.438, according to Joseph E. Bowles (1984) the slope is in accordance with the safe conditions.
Highlights
Tui Hill is a limestone hill lined south of Padang Panjang, located between RaoRao Village to Tanah Hitam
The potential for landslides on the slopes of the study can lead to the closure of the access road to dolomite mining so that it can hamper road user traffic and disrupt mining production as well as potential material losses and fatalities This study aims to determine the Safety Factors on earthquake slope research
Yoszi Mingsi Anaperta, Lahir di Padang, 4 Maret 1979
Summary
Bencana alam longsor dan gempa bumi termasuk salah satu bencana alam yang sering terjadi di Indonesia. Hal ini dikarenakan Sumatera Barat merupakan salah satu dari deretan daerah aktif tektonik dan vulkanik yang terletak pada pertemuan dua lempeng yaitu Lempeng Eurasia dan Lempeng Indo-Australia, pergerakan lempeng tersebut bisa memicu banyaknya bencana alam, termasuk gempa bumi dan longsor. Akibat bencana tersebut banyak korban jiwa dan materi yang berada di kaki bukit (Arsip Kota Padang Panjang, 2012). Salah satu titik hasil investigasi pada lereng Bukit Tui di lokasi S0°28’ 50.23” E100° 24’ 16.89”- S0° 28’ 49.19” E100° 24’ 17.07” terdapat lereng tanah memiliki ketinggian 35 meter dengan sudut kemiringan lereng 53 ̊. Potensi akan terjadinya longsoran pada lereng penelitian dapat membahayakan masyarakat penambang dolomit di lokasi lereng. Untuk mencegah terjadinya longsoran dapat dilakukan melalui penelitian sebagai mitigasi terhadap bencana longsor. Dapat mencegah terjadinya korban jiwa maupun kerugian akibat longsoran
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