The aim of this study to find out some mechanical properties of iron ore in Haji Gak iron ore mine in order to design the optimal blasting parameters during mining activities. Totally 10 boulder surface samples of iron ore with more than 40kg weight were collected in 8 stations of different coordinates and altitudes limited between 3437.2 M till 3695 M above sea level. The Haji Gak iron mine reserve has estimated approximately 1.8 Billion tonnes iron ore with concentration of 67% of Fe and 96.15% of Fe2O3. The measurement of mechanical properties of iron ores were done with ASTM standard in high level technological and modern laboratory. The laboratory experiments reveal the uniaxial compressive strength value of collected ore sample 98.09 Mpa with elastic modules of 79.113 Mpa and 0.12 Poisson ratios in sample no. 18 shown the maximum amount of uniaxial compressive strength and Elastic modules. The point load test shown the maximum value of IS(50), 18.18 Mpa and 22.73 Mpa of uniaxial tensile strength in sample no.3. These parameters directly affected the blasting parameters, blasting pattern and explosive type in optimal mining activities. As this mine is not extracted yet, thus it is the first time to design the blasting pattern and parameters base on measured properties of rocks.

Uniaxial compressive strength, Point load strength, Young’s modulus, Piosson’s Ratio, Blasting Pattern

[1] A.S. Sahak, “Underground Extraction Technology of Metallic and Non Metallic Mines”, Ministry of higher education Publisher, Kabul Polytechnic University. Kabul. pp. 37-64, 2011.
[2] P.K. Singh, M.P. Roy, R.K. Paswan, Md. Sarim, Suraj. Kumar, Ranjan. Rakesh. Jha,” Rock fragmentation control in opencast blasting”, Journal of rock Mechanics and Geochemical Engineering, Vol. 8, Issue. 2, pp. 225-237, November 2016.https://doi.org/10.1016/j.jrmge.2015.10.005.
[3] S.P. Singh, R. Narendrula, D. Duffy, “Influence of blasted muck on the productivity of the loading equipment”, Proceedings of the 3rd EFEE Conference on Explosives and Blasting. India pp. 347-353, 2005.
[4] K. Žarko, Č. Miodrag, T. Dražena,” Calculation of Drilling and Blasting Parameters for Quarry, Dobrnja, near Banja luka”, Professional paper UDC: 622.332 (497.6 Banja Luka). November 2013, Doi: 10.7251/afts.2013.0509.035K.
[5] S. Bhandari,” Engineering Rock Blasting Operation”, Publisher - A.A. Balkema, Rotterdam, Netherland, ISBN- 905410658 1. pp. 135-137. 375, 1997.
[6] B. Adebayo, E.C. Umeh, “Influence of Some Rock Properties on Blasting Performance – A case study”, Journal of Engineering and Applied Sciences. pp. 41-44, 2007.
[7] H. Alehossein, J. N. Boland,“ Strength, Toughness, Damage and Fatigue of rock”, Conference of Structural Integrity and Fracture in Brisbane, Australia, ISSN/ISBN: 1864997605, p.7, 2004. http://eprint.uq.edu.au/archive/00000836. Identifier: procite: d599ebdc-9263-4f3c-ba4b-8edf895ca0b7.
[8] J.M.F. Clout, J.R. Manuel,” Iron Ore; Mineralogy, Processing and Environmental Sustainability”, Science direct publisher, pp. 45-84. 2015. https://doi.org/10.1016/B978-1-78242-156-6.00002-2.
[9] H. A. Malistani, “Geology and Genesis of Haji Gak Iron Ore Deposit, Bamyan, Central Afghanistan”, PhDs Dissertation, Bonn, p.189, 2016.
[10] “Minerals in Afghanistan”, Afghanistan Geological Survey (AGS) and British Geological Survey (BGS) project, 2008, https://www.bgs.ac.uk/downloads/start.cfm-id=3208.
[11] I.K. Kusov, M.S. Smirnov, V.V. Reshetnyak,” Report on the Results of Geological Prospecting, Survey and Exploration of Iron Deposits and Occurrences in Central Afghanistan with the data on iron ore reserves estimation of the Haji-Gak deposit carried out in 1963–1964: Kabul, Afghanistan”, Afghanistan Geological and Mineral Survey USSR v/o Techno export contract no. 640, Vol. 3, 1965 b.
[12] Fatima. Rezaye, Shivanna,” Studies On Chemical and Mineralogical Composition of Iron Ore In Related the Economic Potential of Mining Activities in Haji Gak Iron Ore Mine, Bamyan Province, Central Afghanistan”, International Journal of Research and Analytical Reviews (IJRAR), E-ISSN 2348 – 1269, P-ISSN 2349-5138, Vol.5, Issue. 4, pp. 591- 603, October 2018. http://www.ijrar.org/IJRAR1904196.pdf. Doi.one/10.1729/Journal.18575.
[13] H.A. Malistani,“ Express Report on Haji gak Iron Ore Deposit in Central Iron Belt of Afghanistan”, Department of geology. Bamyan University, p. 8, 2011.
https://www.researchgate.net/publication/236972843.
[14] S. Peng, J. Zhang, “Engineering geology for underground rocks”, Springer – Verlag. Berlin Heidelberg, p. 10-125, 319, 2007. ISBN 978-3-540-73294-5
[15] M. Alitalesh, M. Yazdani, M. Molaali, “Correlation between uniaxial strength and point load index of rocks”, Conference Paper, the 15th Asia Conference on Soil Mechanic and Geotechnical Engineering, 2016. Doi: 10.3208/jgssp.IRN-08.
[16] J.C. Jaeger, N.G.W. Cook, W. Zimmerman,” Fundamentals of Rock Mechanics,” 4th edition, Blackwell Publishing, pp. 81. 474, 2007. ISBN-13: 978-0-632-05759-7.
[17] J. A. Hudson, J.P. Harrison, “Engineering rock mechanics, an introduction to the principles”, First edition, Pergamon, Publisher Elsevier Science Ltd, pp. 70- 71. 444, 1997. ISBN: ISBN: 0 08 04 19 12 7
[18] M.R. Kiyoumarsi, S. Javadi, “Mining Engineering book”, Jihad e Danish Publisher, Tehran. pp. 57-128, 2006.
ISBN: 978-964-8737-39-9.
[19] Z.T. Bieniawski,” The point load test in geotechnical practice”, Engineering Geology, Elsevier Publisher, Vol. 9, Issue.1, pp. 1-11, 1975. doi: 10.1016/0013-7952(75)90024-1
[20] Anon, 1980,” The effect of rock properties on blasting”, Part Ι and ΙΙ, Noble Notes, 26.
[21] K. Sassa, I. Ito, “On the relation the strength of a rock and the Pattern of breakage by blasting. Proc,” 3rd Int. Conference, Rock mechanic, Denver, Vol. ΙΙ-B, pp. 1501-1505, 1974.
[22] Gang. Han, Maurice. Dusseault, B. Emmanuel. Detournay, Bradley. J. Thomson, Kris. Zacny,” Drilling in Extreme Environments; Chapter 2- Principles of Drilling and Excavation”, Publisher - WILEY –VCH. Germany, pp. 31-129. 755, 2009. ISBN- 978-3-527-40852-8. https://www.bu.edu/remotesensing/files/2015/09/Han_Extraterrestrial_Drilling_Ch2_2009.pdf
[23] А. S. Tanaino, “Rock Drill ability Classification. Part II: Canonical Representation of Rock Properties in the Rock Classification by Fracture Resistance”, Journal of Mining Science. Vol. 44, No. 6, pp. 600-601, 2008.
[24] A.H. Wahidi, “Mining Machineries. Ministry of higher education publisher”, Kabul Polytechnic University, Kabul, pp.10. 435, 2018.
[25] L. S. Burshtein, “Effect of Moisture on the Strength and Deformability of Sandstone” Soviet Mining Science, Vol.5, Issue. 5, pp. 573-576, 1969. Doi: 10.1007/bf02501278.
[26] A.B. Hawkins, B.J. Mc Connnell, “Sensitivity of Sandstone Strength and Deformability to Changes in Moisture Content”, Quarterly Journal of Engineering Geology. 25. pp. 115-130, 1992.
[27] S. D. Priest, S. Selvakumar, “The failure characteristics of selected British rocks. Report to the transport and road research laboratory”, Imperial College, London, 1982.
[28] M. Mellor, “Strength and Deformability of Rocks at Low Temperatures”, Project No- DA Task 1T062112A13001, Hanover, New Hampshire 03755, Research Report 294, pp. 1-55. 73, 1971.
[29] E. Papamichos, M. Brignoli, F. J. Santarelli, “An Experimental and Theoretical Study of a Partially Saturated Collapsible Rock. Mechanics of Cohesive-Frictional Material”, Vol. 2, pp.251-278, 1997.
[30] Fatima. Rezaye, Shivanna, “Studies on Physical and Mechanical Properties of Iron Ore in Relation to Blasting Process in Mining Activities of Haji Gak Iron Ore Mine, Bamyan Province, Central Afghanistan”, International Journal of Research and Analytical Reviews (IJRAR), Vol. 6, Issue. 1, pp.5-19, Mar 2019.
E-ISSN 2348-1269. P- ISSN 2349-5138,http://www.ijrar.org/IJRAR19J3149.pdf.
[31] R. Gholami, N. Fakhari,” Handbook of Neural Computation; Chapter 26, Vector Machine: Principles, Parameters, and Applications”, Academic Press. pp. 515-535, 2017.
ISBN: 978-0-12-811318-9. Doi.org/10.1016/C2016-0-01217-2.