Abstract
Water saturation of rock plays an important role in chipping efficiency and productivity of mechanical excavators. In this study, small-scale linear rock-cutting experiments were performed with a chisel pick on five sandstones, four gypsums, and three synthetic specimens under dry and water-saturated conditions at cutting depths of 1, 3, and 5 mm in order to investigate the mechanical effect of water on the rock-cutting process. In addition, chipping efficiency and cutting particle size distribution in both dry and saturated rock conditions were investigated using sieving analysis and particle size distribution indices. In addition, a new indicator was introduced for evaluating chipping efficiency. Analysis on cutting test results showed that water saturation causes (1) a reduction of production capacity of chisel pick ranging from 1 to 35%, (2) a reduction of chip size and parameters of particle size distribution, and (3) an increase in the proportion of fines produced from rock cutting. The results showed that the reduction of chisel production capacity is greater in saturated rock samples with higher porosity and water content when compared to the same dry conditions. The results of the sieving analysis revealed that all the size parameters of rock debris are reduced in saturated conditions compared to dry conditions.
Highlights
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Chipping efficiency was investigated in dry and saturated rock cutting with a simple chisel pick.
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The production capacity, chip size, and weight percentage of large chips were found to be lower in saturated cutting conditions.
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The proportion of fines was found to be higher in saturated rocks.
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The reduction of chisel production capacity was greater in saturated rocks with higher porosity and water content when compared to the same dry conditions.
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There was a strong correlation between cuttings size descriptors and production capacity in both dry and saturated conditions.
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References
Abu Bakar MZ, Gertsch LS (2011) Saturation effects on disc cutting of sandstone. In: Proceedings of the 45th US rock mechanics/geomechanics symposium, San Francisco, pp 1–9
Abu Bakar MZ, Gertsch LS (2013) Evaluation of saturation effects on drag pick cutting of a brittle sandstone from full scale linear cutting tests. Tunn Undergr Sp Technol 34:124–134. https://doi.org/10.1016/j.tust.2012.11.009
Abu Bakar MZ, Gertsch LS, Rostami J (2014) Evaluation of fragments from disc cutting of dry and saturated sandstone. Rock Mech Rock Eng 47(5):1891–1903. https://doi.org/10.1007/s00603-013-0482-8
Altindag R (2004) Evaluation of drill cuttings in prediction of penetration rate by using coarseness index and mean particle size in percussive drilling. Geotech Geol Eng 22(3):417–425. https://doi.org/10.1023/B:GEGE.0000025043.92979.48
ASTM D2938-95 (1995) Standard test method for unconfined compressive strength of intact rock core specimens. Annual Book of ASTM Standards, American Society for Testing and Materials, West Conshohocken
ASTM D3967-95 (1995) Standard test method for splitting tensile strength of intact rock core specimens. Annual Book of ASTM Standards, American Society for Testing and Materials, West Conshohocken
ASTM D4543-08 (2008) Standard practices for preparing rock core as cylindrical test specimens and verifying conformance to dimensional and shape tolerances. Annual Book of ASTM Standards, American Society for Testing and Materials, West Conshohocken
Balci C (2009) Correlation of rock cutting tests with field performance of a TBM in a highly fractured rock formation: a case study in Kozyatagi-Kadikoy metro tunnel, Turkey. Tunn Undergr Sp Technol 24(4):423–435. https://doi.org/10.1016/j.tust.2008.12.001
Balci C, Bilgin N (2007) Correlative study of linear small and full-scale rock cutting tests to select mechanized excavation machines. Int J Rock Mech Min Sci 3(44):468–476. https://doi.org/10.1016/j.ijrmms.2006.09.001
Balci C, Demircin MA, Copur H, Tuncdemir H (2004) Estimation of optimum specific energy based on rock properties for assessment of roadheader performance. J S Afr I Min Metall 104(11):633–641. https://hdl.handle.net/10520/AJA0038223X_2978
Barker JS (1964) A laboratory investigation of rock cutting using large picks. In Int J Rock Mech Min Sci Geomech Abstr 1(4):519–534. https://doi.org/10.1016/0148-9062(64)90059-2
Bieniawski ZT (1989) Engineering rock mass classifications. Wiley, New York
Bilgin N (1977) Investigations into the mechanical cutting characteristics of some medium and high strength rocks. PhD thesis, University of Newcastle upon Tyne, UK
Bilgin N, Demircin MA, Copur H, Balci C, Tuncdemir H, Akcin N (2006) Dominant rock properties affecting the performance of conical picks and the comparison of some experimental and theoretical results. Int J Rock Mech Min Sci 43(1):139–156. https://doi.org/10.1016/j.ijrmms.2005.04.009
Bruland A (2000) Hard rock tunnel boring: vol 1–10. PhD Thesis, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Burshtein LS (1969) Effect of moisture on the strength and deformability of sandstone. J Min Sci 5(5):573–576. https://doi.org/10.1007/BF02501278
Cai X, Zhou Z, Liu K, Du X, Zang H (2019) Water-weakening effects on the mechanical behavior of different rock types: phenomena and mechanisms. Appl Sci 9(20):44–50. https://doi.org/10.3390/app9204450
Colback PSB, Wiid BL (1965) The influence of moisture content on the compressive strength of rocks. Geophysics. In: Proceedings of the 3rd Canadian symposium on rock mechanics, University of Toronto
Comakli R, Kahraman S, Balci C (2014) Performance prediction of roadheaders in metallic ore excavation. Tunn Undergr Sp Technol 40:38–45. https://doi.org/10.1016/j.tust.2013.09.009
Copur H (2010) Linear stone cutting tests with chisel tools for identification of cutting principles and predicting performance of chain saw machines. Int J Rock Mech Min Sci 47(1):104–120. https://doi.org/10.1016/j.ijrmms.2009.09.006
Çopur H, Tunçdemir H, Bilgin N, Dincer T (2001) Specific energy as a criterion for the use of rapid excavation systems in Turkish mines. IMM Trans A Min Technol 110:149–157
Copur H, Balci C, Tumac D, Bilgin N (2011) Field and laboratory studies on natural stones leading to empirical performance prediction of chain saw machines. Int J Rock Mech Min Sci 48(2):269–282. https://doi.org/10.1016/j.ijrmms.2010.11.011
Copur H, Bilgin N, Balci C, Tumac D, Avunduk E (2017) Effects of different cutting patterns and experimental conditions on the performance of a conical drag tool. Rock Mech Rock Eng 50(6):1585–1609. https://doi.org/10.1007/s00603-017-1172-8
Dogruoz C, Bolukbasi N (2014) Effect of cutting tool blunting on the performances of various mechanical excavators used in low-and medium-strength rocks. Bull Eng Geol Env 73(3):781–789. https://doi.org/10.1007/s10064-013-0551-y
Dursun AE, Gokay MK (2016) Cuttability assessment of selected rocks through different brittleness values. Rock Mech Rock Eng 49(4):1173–1190. https://doi.org/10.1007/s00603-015-0810-2
Dursun AE, Bilim N, Comakli R, Gokay MK (2011) Correlation of rock brittleness and specific energy obtained from linear rock cutting tests. In: Proceedings of the 20th international symposium on mine planning and equipment selection, pp 12–14
Dyke CG, Dobereiner L (1991) Evaluating the strength and deformability of sandstones. Q J Eng Geol Hydrogeol 24(1):123–134. https://doi.org/10.1144/GSL.QJEG.1991.024.01.13
Erguler ZA, Ulusay R (2009) Water-induced variations in mechanical properties of clay-bearing rocks. Int J Rock Mech Min Sci 46(2):355–370. https://doi.org/10.1016/j.ijrmms.2008.07.002
Evans I (1962) A theory of the basic mechanics of coal ploughing. In: International symposium on mining research. University of Missouri, pp 761–798
Evans I, Pomeroy CD (1966) The strength, fracture and workability of coal. Pergamon Press, Oxford
Folk RL, Ward WC (1957) Brazos River bar, a study in the significance of grain size parameters. J Sediment Res 27(1):3–26. https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D
Goktan RM (1995) Prediction of drag bit cutting force in hard rocks. In: Proceedings of the 3rd international symposium on mine mechanization and automation, Golden, Colorado, pp 10–31
Gong QM, Zhao J, Jiang YS (2007) In situ TBM penetration tests and rock mass boreability analysis in hard rock tunnels. Tunn Undergr Sp Technol 22(3):303–316. https://doi.org/10.1016/j.tust.2006.07.003
Guha Roy D, Singh TN, Kodikara J, Das R (2017) Effect of water saturation on the fracture and mechanical properties of sedimentary rocks. Rock Mech Rock Eng 50(10):2585–2600. https://doi.org/10.1007/s00603-017-1253-8
Hadizadeh J, Law RD (1991) Water-weakening of sandstone and quartzite deformed at various stress and strain rates. Int J Rock Mech Min Sci Geomech Abstr 28(5):431–439
Hashiba K, Fukui K (2015) Effect of water on the deformation and failure of rock in uniaxial tension. Rock Mech Rock Eng 48(5):1751–1761. https://doi.org/10.1007/s00603-014-0674-x
Hawkins AB, McConnell BJ (1992) Sensitivity of sandstone strength and deformability to changes in moisture content. Q J Eng Geol Hydrogeol 25(2):115–130. https://doi.org/10.1144/GSL.QJEG.1992.025.02.05
Heydari S, Khademi Hamidi JK, Monjezi M, Eftekhari A (2019) An investigation of the relationship between muck geometry, TBM performance, and operational parameters: a case study in Golab II water transfer tunnel. Tunn Undergr Sp Technol 88:73–86. https://doi.org/10.1016/j.tust.2018.11.043
Hou H, Liu Z, Zhu H, Wang Z, Yin Z (2021) An experimental study of the relationship between cutting efficiency and cuttings size in rock cutting using a PDC cutter. J Braz Soc Mech Sci Eng 43(5):1–12. https://doi.org/10.1007/s40430-021-02984-9
Jackson E, Devaux M, Machin J (2007) Performance prediction for a subsea mechanical trenching wheel. In Proceedings: 6th International Offshore Site Investigation and Geotechnics Conference, London, UK
Jeong HY, Jeon SW (2018) Characteristic of size distribution of rock chip produced by rock cutting with a pick cutter. Geomech Eng 15(3):811–822. https://doi.org/10.12989/gae.2018.15.3.811
Jiang Q, Cui J, Feng X, Jiang Y (2014) Application of computerized tomographic scanning to the study of water-induced weakening of mudstone. Bull Eng Geol Env 73(4):1293–1301. https://doi.org/10.1007/s10064-014-0597-5
Karakul H, Ulusay R (2013) Empirical correlations for predicting strength properties of rocks from P-wave velocity under different degrees of saturation. Rock Mech Rock Eng 46(5):981–999. https://doi.org/10.1007/s00603-012-0353-8
Krumbein WC (1934) Size frequency distributions of sediments. J Sedim Petrol 4(2):65–77. https://doi.org/10.1306/D4268EB9-2B26-11D7-8648000102C1865D
Kwasniewski M, Rodriguez-Oitabén P (2009) Effect of water on the deformability of rocks under uniaxial compression. In: ISRM regional symposium—EUROCK, Cavtat, Croatia, pp 271–276
Lajtai EZ, Schmidtke RH, Bielus LP (1987) The effect of water on the time-dependent deformation and fracture of a granite. Int J Rock Mech Min Sci Geomech Abstr 24(4):247–255. https://doi.org/10.1016/0148-9062(87)90179-3
Lashkaripour GR (2002) Predicting mechanical properties of mudrock from index parameters. Bull Eng Geol Env 61(1):73–77. https://doi.org/10.1007/s100640100116
Mann RL, Fatt I (1960) Effect of pore fluids on the elastic properties of sandstone. Geophys 25(2):433–444
Maruvanchery V, Kim E (2019) Effects of water on rock fracture properties: studies of mode I fracture toughness, crack propagation velocity, and consumed energy in calcite-cemented sandstone. Geomech Eng 17(1):57–67
McFeat-Smith I (1975) Correlation of rock properties and tunnel machine performance in selected sedimentary rocks. PhD thesis, University of Newcastle upon Tyne
McFeat-Smith I, Fowell RJ (1977) Correlation of rock properties and the cutting performance of tunnelling machines. In: Proceedings of the conference on rock engineering, University of Newcastle upon Tyne, pp 581–602
Mohammadi M, Khademi Hamidi J, Rostami J, Goshtasbi K (2020) A closer look into chip shape/size and efficiency of rock cutting with a simple chisel pick: a laboratory scale investigation. Rock Mech Rock Eng 53(3):1375–1392. https://doi.org/10.1007/s00603-019-01984-5
Nishimatsu Y (1972) The mechanics of rock cutting. International journal of rock mechanics and mining sciences and geomechanics abstracts, vol 9. Elsevier, Oxford, pp 261–270
Ojo O, Brook N (1990) The effect of moisture on some mechanical properties of rock. Min Sci Technol 10(2):145–156. https://doi.org/10.1016/0167-9031(90)90158-O
Pellet FL, Keshavarz M, Boulon M (2013) Influence of humidity conditions on shear strength of clay rock discontinuities. Eng Geol 157:33–38. https://doi.org/10.1016/j.enggeo.2013.02.002
Potts ELJ, Shuttleworth P (1958) A study of ploughability of coal with special reference to the effects of blade shape, direction of planning to the cleat, planning speed and influence of water infusion. Trans Inst Min Eng 117:519–553
Rosin P, Rammler E (1933) The laws governing the fineness of powdered coal. J Inst Fuel 7:29–36
Rostami K, Khademi Hamidi J, Nejati HR (2020) Use of rock microscale properties for introducing a cuttability index in rock cutting with a chisel pick. Arab J Geosci 13(18):1–12. https://doi.org/10.1007/s12517-020-05937-z
Rostamsowlat I, Richard T, Evans B (2018) An experimental study of the effect of back rake angle in rock cutting. Int J Rock Mech Min Sci 107:224–232
Roxborough FF (1973) Cutting rocks with picks. Min Eng 445–455.
Roxborough FF (1987) The role of some basic rock properties in assessing cuttability. In: Proceedings on seminar on tunnels: wholly engineered structures. The Institute of Engineers Australia and AFCC
Roxborough FF, Rispin A (1973) Mechanical cutting characteristics of lower chalk. Tunn Tunn 5:45–67
Roxborough FF, King P, Pedroncelli E (1981) Tests on the cutting performance of a continuous miner. J S Afr I Min Metall 81(1):9–25
Shakoor A, Barefield EH (2009) Relationship between unconfined compressive strength and degree of saturation for selected sandstones. Env Eng Geosci 15(1):29–40. https://doi.org/10.2113/gseegeosci.15.1.29
Shao W, Li X, Sun Y, Huang H (2017) Parametric study of rock cutting with SMART∗ CUT picks. Tunn Undergr Sp Technol 61:134–144. https://doi.org/10.1016/j.tust.2016.09.012
Tang S (2018) The effects of water on the strength of black sandstone in a brittle regime. Eng Geol 239:167–178. https://doi.org/10.1016/j.enggeo.2018.03.025
Tang ZC, Zhang QZ, Peng J, Jiao YY (2019) Experimental study on the water-weakening shear behaviors of sandstone joints collected from the middle region of Yunnan province, P.R. China. Eng Geol 258:105161. https://doi.org/10.1016/j.enggeo.2019.105161
Tiryaki B (2008) Application of artificial neural networks for predicting the cuttability of rocks by drag tools. Tunn Undergr Sp Technol 23(3):273–280. https://doi.org/10.1016/j.tust.2007.04.008
Tiryaki B, Dikmen AC (2006) Effects of rock properties on specific cutting energy in linear cutting of sandstones by picks. Rock Mech Rock Eng 39(2):89–120. https://doi.org/10.1007/s00603-005-0062-7
Tiryaki B, Boland JN, Li XS (2010) Empirical models to predict mean cutting forces on point-attack pick cutters. Int J Rock Mech Min Sci 5(47):858–864. https://doi.org/10.1016/j.ijrmms.2010.04.012
Török Á, Vásárhelyi B (2010) The influence of fabric and water content on selected rock mechanical parameters of travertine, examples from Hungary. Eng Geol 115:237–245. https://doi.org/10.1016/j.enggeo.2010.01.005
Tumac D (2014) Predicting the performance of chain saw machines based on Shore scleroscope hardness. Rock Mech Rock Eng 47(2):703–715. https://doi.org/10.1007/s00603-013-0416-5
Tumac D, Copur H, Balci C, Er S, Avunduk E (2018) Investigation into the effects of textural properties on cuttability performance of a chisel tool. Rock Mech Rock Eng 51(4):1227–1248. https://doi.org/10.1007/s00603-017-1376-y
Tuncdemir H, Bilgin N, Copur H, Balci C (2008) Control of rock cutting efficiency by muck size. Int J Rock Mech Min Sci 45(2):278–288. https://doi.org/10.1016/j.ijrmms.2007.04.010
Ulusay R, Hudson JA (2007) The complete ISRM suggested methods for rock characterization, testing and monitoring: 1974–2006. Commission on Testing Methods. International Society of Rock Mechanics, Compilation Arranged by the ISRM Turkish National Group, Ankara, p 628
Vasarhelyi B, Ván PJEG (2006) Influence of water content on the strength of rock. Eng Geol 84(1–2):70–74. https://doi.org/10.1016/j.enggeo.2005.11.011
Wang X, Liang Y, Wang Q, Zhang Z (2017a) Empirical models for tool forces prediction of drag-typed picks based on principal component regression and ridge regression methods. Tunn Undergr Sp Technol 62:75–95. https://doi.org/10.1016/j.tust.2016.11.006
Wang X, Su O, Wang QF, Liang YP (2017b) Effect of cutting depth and line spacing on the cuttability behavior of sandstones by conical picks. Arab J Geosci 10:525. https://doi.org/10.1007/s12517-017-3307-3
Wentworth CK (1922) A scale of grade and class terms for clastic sediments. J Geol 30(5):377–392
Wong LNY, Jong MC (2014) Water saturation effects on the Brazilian tensile strength of gypsum and assessment of cracking processes using high-speed video. Rock Mech Rock Eng 47(4):1103–1115. https://doi.org/10.1007/s00603-013-0436-1
Wong LNY, Maruvanchery V, Liu G (2016) Water effects on rock strength and stiffness degradation. Acta Geotech 11(4):713–737. https://doi.org/10.1007/s11440-015-0407-7
Yasar S, Yilmaz AO (2017) Rock cutting tests with a simple-shaped chisel pick to provide some useful data. Rock Mech Rock Eng 50(12):3261–3269
Yasar S, Yilmaz AO (2018) Drag pick cutting tests: a comparison between experimental and theoretical results. J Rock Mech Geotech Eng 10(5):893–906
Yilmaz I (2010) Influence of water content on the strength and deformability of gypsum. Int J Rock Mech Min Sci 2(47):342–347. https://doi.org/10.1016/j.ijrmms.2009.09.002
Yilmaz NG, Yurdakul M, Goktan RM (2007) Prediction of radial bit cutting force in high-strength rocks using multiple linear regression analysis. Int J Rock Mech Min Sci 6(44):962–970. https://doi.org/10.1016/j.ijrmms.2007.02.005
Yin LJ, Gong QM, Zhao J (2014) Study on rock mass boreability by TBM penetration test under different in situ stress conditions. Tunn Undergr Sp Technol 43:413–425. https://doi.org/10.1016/j.tust.2014.06.002
Zhao Z, Yang J, Zhou D, Chen Y (2017) Experimental investigation on the wetting-induced weakening of sandstone joints. Eng Geol 225:61–67. https://doi.org/10.1016/j.enggeo.2017.04.008
Zhou Z, Cai X, Cao W, Li X, Xiong C (2016) Influence of water content on mechanical properties of rock in both saturation and drying processes. Rock Mech Rock Eng 49(8):3009–3025. https://doi.org/10.1007/s00603-016-0987-z
Zhuang L, Kim KY, Diaz M, Yeom S (2020) Evaluation of water saturation effect on mechanical properties and hydraulic fracturing behavior of granite. Int J Rock Mech Min Sci 130:104321. https://doi.org/10.1016/j.ijrmms.2020.104321
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Bejari, H., Hamidi, J.K. An Experimental Study of Water Saturation Effect on Chipping Efficiency of a Chisel Pick in Cutting Some Low- and Medium-Strength Rocks. Rock Mech Rock Eng 56, 4507–4533 (2023). https://doi.org/10.1007/s00603-023-03267-6
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DOI: https://doi.org/10.1007/s00603-023-03267-6