Asof, Marwan and Dyah Hastuti, E W and Manuhutu, H I and Nasution, Yudha (2010) THE STUDY OF LANDSLIDE USING SLOPE STABILITY RADAR WITHIN FAILURE SS_P4_028 IN PT NEWMONT, NUSA TENGGARA BARAT, INDONESIA. In: Twin International Confrence on Geotechnical and Geo-Environmental Engineering cum 7th Ground Improvement Techniques, 23-25 June, 2010, Seoul, South Korea.

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    PT Newmont Nusa Tenggara Barat (PT. NNT) which is located in Batu Hijau, Sumbawa Island, Indonesia is one of open pit mining company of Au-Cu. Total of mining material planned in this time about 3500 million ton, whit the striping ratio of escavation is equal to 1.7:1, consist of 0.49% gr / ton Cu, 0.34% gr . ton Au, and 1.06 gr / ton Ag. Totalize of mining depth level is planned about 1000 metre. The Batuhijau mining have relatively lower mineral grade and heigh tonnage of mineral deposit, becoming consideration to conduct the mining process which resulting economic value often result the risk happening of landslides. Thereby require to be studied about the critical limit value of landslide so that applicable to forecast when landslide will be happened and can be used as forewarning. So that loss potency yielded by landslide earns minimization. One of appliance used for the monitoring of landslide in the PT NNT mining is slope stability radar (SSR) Based on monitoring using this SSR, is mensurement of landslide of bench in real time and can be use to predict the critical limit value of movement before the occurrence of landslide. This aim of this research is to analyse processes of the occorence of landslide in Faillure SS_P4_028 bench of South-West Domain 3 in Batu Hijau open pit mining, including to monitor the time and speed of sliding, and forecast the critical limit value to repose angle. The method of this study is data collecting covering primary and secondary data. Base on this study, the critical limit value that happen at Faillure SS_P4_028 is when the speed moment reaches the value of 13.03 mm/hour. At the moment, the mining activity must be stopped with the existence of forewarning by red alarm from Slope Stability Radar and the speed moment reach 7.43 mm/hour. The landslide at Faillure SS_P4_028 became of the speed moment have reached at value of 20.02 mm/hour.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: PT. Newmont, Batu Hijau, Nusa Tenggara Barat, Faillure SS_P4_028, Slope stability radar
    Subjects: Q Science > QE Geology
    Divisions: Faculty of Engineering > Department of Mining Engineering
    Depositing User: Hairul Anwar
    Date Deposited: 27 Mar 2013 07:51
    Last Modified: 27 Mar 2013 07:51

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