Landfill Design for Reclamation of Şırnak Coal Mine Dumps: Shalefill Stability and Risk Assessment

Authors: Yıldırım I. Tosun, Halim Cevizci, Hakan Ceylan

Abstract:

By GEO5 FEM program with four rockfill slope modeling and stability analysis was performed for S1, S2, S3 and S4 slopes where landslides of the shalefills were limited. Effective angle of internal friction (φ'°) 17°-22.5°, the effective cohesion (c') from 0.5 to 1.8 kPa, saturated unit weight 1.78-2.43 g/cm3, natural unit weight 1.9-2.35 g/cm3, dry unit weight 1.97-2.40 g/cm3, the permeability coefficient of 1x10-4 - 6.5x10-4 cm/s. In cross-sections of the slope, GEO 5 FEM program possible critical surface tension was examined. Rockfill dump design was made to prevent sliding slopes. Bulk material designated geotechnical properties using also GEO5 programs FEM and stability program via a safety factor determined and calculated according to the values S3 and S4 No. slopes are stable S1 and S2 No. slopes were close to stable state that has been found to be risk. GEO5 programs with limestone rock fill dump through FEM program was found to exhibit stability.

Keywords: Slope stability, GEO5, rockfills, rock stability.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1111582

References:

[1] Hoek, E. and Bray, JW, 1977, Rock slope engineering, Stephen Austin and Sons, Ltd., Hertford, 402 p.
[2] Lamp, W. T. and Whitman, RV, 1969, Soil Mechanics, John Wiley and Sons, New York
[3] Bishop, AW, 1955, The use of the slip circle in the stability analysis of earth slopes, GEOTECHNIQUE, Vol. 5, 7-17.
[4] Hoek, E., 1970, Estimating the stability of excavated slopes in Opencast mines, Institution of Mining and Metallurgy, A105, A132
[5] Ulusay, B 1982, as the first approach for the Calculation of Slope Angle Two New Practical Method to Field Implementation of the Konya-Çumra Magnesite, Geology Müh.Der., Ocak, 30-41
[6] Ulusay, R., "Applied Geotechnical Data", JMO Publications, Ankara, 1989.
[7] Paşamehmetoğl, LV, ÖZGENOĞLU, A., Watermelon, C, 1991, Rock Slope Stability, 2 Print, T.M.M.O.B Mining Eng. Room Publications, Ankara, May.
[8] Anbalagan, R., 1992, Landslide hazard evaluation and zonation mapping in mountainous terrain, "Engineering Geology, 32:269-277,
[9] Fall, H, 1987, "Geotechnical Developments", DSI slope of the Stability and Retaining Structures Seminar, Samsun
[10] Anonymous, 2011, Şırnak Provincial Administration Reports.
[11] Anonymous, c 2011, "Turkey Earthquake Zone Map", Disaster and Emergency Management Presidency, Earthquake Department Ankara
[12] Anonymous, 2013, GEO5 programs - Engineering Manuals - Part 1 - Part 2 http://www.finesoftware.eu/geotechnical-software/
[13] Anonymous, 2009, GEO5 programs - FEM - Theoretical Guide http://www.finesoftware.eu/geotechnical-software/
[14] TSE, 1987 "Soil Laboratory Testing in Civil Engineering", TS 1900, UWC 624131, 1 Print, Ankara, April
[15] TSE, 1987 " Civil Engineering Disturbed and Undisturbed Sampling Methods", TS 1901, UWC-622 233 624.131.36, 1 Print, Ankara, April.
[16] TSE, 1991 "Balance and Calculation Methods of slope-floor", the TS 8853, UWC 624137-624131, 1 Printing, London, in February.
[17] ASTM 1990, "Standard Test Method for Direct Shear Test of Soils Under Cosolidated Drained Condition", D3080-90,
[18] Dramis, F., Sorriso-Valvo, M., 1994 "Deep-Seated gravitational slope Deformations, related landslides and tectonics", Engineering Geology 38, 231-243,.
[19] Gorog P & Toro, 2007 Slope stability assessment of weathered clay by using field data and computer modeling: a case study from Budapest, Natural Hazards and Earth System Sciences, 7, 417-422, www.natu-hazards-earth-syst- sci.net
[20] Gorog P & Toro, 2006, Stability problems of abandoned clay pits in Budapest, IAEG2006 Paper number 295, The Geological Society of London
[21] Hoek, E., 2013. Practical Rock Engineering, notes by Evert Hoek Hoek. My http://www.rocscience.co
[22] Hutchinson, JN., 1995 "Landslide hazard assessment. Keynote paper. In: Bell DH (ed) landslides, Proceedings of 6th International Symposium on landslides ", Christchurch, New Zealand, vol 1 Balkema, Rotterdam, pp. 1805-1841,
[23] Kilic, R., Ulamış, K.., "Gölbasi (Ankara) Investigation of Mass Movements in the South," Bulletin of Engineering Geology, Engineering Geology Of Bulletin, Issue: 20 (75-86).
[24] Prusa, J., 2009, Comparison of geotechnic softwares - Geo FEM, Plaxis, Z-Soil, XIII to ECSMG, Vanicek et al. (Eds). cgts, Prague, ISBN 80-86769-01-1, (Vol. 2)
[25] Vaneckov, V, Laura J, J Prus, 2011, Sheeting Wall Analysis by the Method of Dependent Pressures, Geotec Hanoi - ISBN 978 - 604-82 - 000 - 8 ID No. / Pp. 7
[26] Ulusay, R., 1982 "Practical Methods Used in Slope Stability Analysis and Geotechnical Studies", MTA Publications, Education Series, 25,
[27] Wiley, L., 1987 "Stability Slope and Geomorphology Geotechnical Engineering", England.