ANALISIS KESTABILAN LERENG MENGGUNAKAN DATA VWP (VIBRATING WIRE PIEZOMETER) PADA PT.NEWMONT NUSA TENGGARA NUSA TENGGARA BARAT
DOI:
https://doi.org/10.33536/jg.v2i01.1325Keywords:
GroundWater Preassure, Vibrating Wire Piezometer, Slope, Stability, Safety FactorAbstract
Slope stability that is important of open pit system . The aims of this research todetermine the influenceof groundwater pressureto the value of safety factorfrom some slope in phase5 to getstable slope conditions when ultimate pit reach phase6. Data of Groundwater obtained from the data of VWP (Vibrating Wire Piezometer). This analysis was conducted using GLE/Morgenstern-price and bishops simple. Analysis methods that using on the model is pressure drop testing from each censor and pressure drop in the horizontal depth. Analysis picture simulation from safety factor is 1.308 pressure drop 25 meter at pressure 400 Kpa, pressure 450 Kpa, FK 1.211, 500 Kpa, FK 1,001 and pressure drop 50 meter only pressure different however whit same safety factor is 800 Kpa, 900 Kpa, 1000 Kpa. General conclusions based on the result of research found that the effect of water pressure on slope safety factor, more big of groundwater pressureso descend slope value of safety factor. By reducing the water pressure on a wall slope it means increase the value of the slope safety factor.
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References
Bouwer, H.1978. Ground hyrology. Mc Graw Hill Book Company, New York.
Chae, B.G, Yichikawa, G.C, 1981, ISMR (Internasional society for rock mechanics), internasional symposium, weak rock-soft, fractured and weathered rock, Tokyo, Japan.
Das, B. (1994). Principles of Geotechnical Engineering. Boston: PWS Publishing Company.
Eberhardt, Erik. 2003. Rock slope stability analysis – utilization of advanced numurical techniues. University of british colombia.
Geoff Baele, 6 Oct 2009, Revew of hydrogeology and pit slope drainage program, Technical Memorandum, Batu Hijau, Sumbawa. Not published
Gouw Tjie Liong, Dave Juven George Herman HATTI-PIT-XVI 2012
Hoek, E. and Bray, J.W., “Rock Slope Engineering”’ 3rd Ed., The Institution Of Mining and Metallurgy London, 1
Hudson, J.A & Harrison,J.P. (1997). Enggineering Rock Mechanics: an introduction to the Principles. Elsevier Sien: Oxford,444 pp.
Irianto. B., and Clark, G.H.1995. The Batu Hijau porphyry copper-gold deposit, Sumbawa Island, Indonesia. In Maluk, J.L. and St. George,J.D.eds. 1995 Pacrim Congress. Auckland. New Zealand. November 19-22. 1995. Glenside. South Australia. Australia Mineral Fondation. Proceedings. P. 299-304
Peterson, Jennifer Lynn.1999. Probability Analysis of Slope Stability, thesis atwest Virginia University,Morgantown, West Virginia
Proffet, I & Mitchell, P. 1997. Tonalite Porphyry Intrusion and Wal-Rock Alteration. Batu Hijau Porphyry Cu- Au Deposit. Sumbawa. Island. Indonesia. A Newmont Interium Report
Petunjuk Perencanaan Penanggulangan Longsoran, SKBI .3.06.1987 UDC 624.13 (083.7), Departemen Pekerjaan Umum, Yayasan Badan Penerbit PU.
Sullivan, T.D. 1990. Understanding Pit Slope Movements, In Geotechnical Intrumentation And Monitoring In Open Pit And Under Ground Mining
(Ed: Szwedzicki) pp 435- 445(Balkema: Rotterdam).
Samang Lawalenna, Azikin Busthan.
Analisis Stabilitas Lereng. September 2005. Universitas Hasanuddin.
Vibrating Wire Preassure Transducer calibrasi report. January 14. 2011
Yonsaputra, R.R, 2012, Analisis Pengaruh Water Pressure Terhadap Kestabilan Lereng South East Wall Pahse 6 Di Area Pertambangan PT. Newmont Nusa Tenggara, Kabupaten Sumbawa Barat, Program Studi Teknik Pertambangan, Fakultas Teknologi Mineral, UPN “Veteran” Yogyakarta.
Zakaria, zaulfida. Analisis Kesetabilan Lereng Tanah, geologi teknik, FMIPA-UNPAD.
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