Abstract
In the process of rock breaking, the conical pick bears great cutting force and wear, as a result, high-pressure water jet technology is used to assist with cutting. However, the effect of the water jet position has not been studied for rock breaking using a pick. Therefore, the models of rock breaking with different configuration modes of the water jet are established based on SPH combined with FEM. The effect of the water jet pressure, distance between the jet and the pick bit, and cutting depth on the rock breaking performance as well as a comparison of the tension and compression stress are studied via simulation; the simulation results are verified by experiments. The numerical and experimental results indicate that the decrease in the rates of the pick force obviously increases from 25 MPa to 40 MPa, but slowly after 40 MPa, and the optimal distance between the jet and the pick bit is 2 mm under the JFP and JSP modes. The JCP mode is proved the best, followed by the modes of JRP and JFP, and the worst mode is JSP. The decrease in the rates of the pick force of the JCP, JRP, JFP, and JSP modes are up to 30.96%, 28.96%, 33.46%, 28.17%, and 25.42%, respectively, in experiment. Moreover, the JSP mode can be regarded as a special JFP model when the distance between the pick-tip and the jet impact point is 0 mm. This paper has a dominant capability in introducing new numerical and experimental method for the study of rock breaking assisted by water jet and electing the best water jet position from four different configuration modes.
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References
LIU X H, LIU S Y, CUI X X, et al. Interference model of conical pick in cutting process[J]. Journal of Vibroengineering, 2014, 16(1): 115–128.
LUO Y, ZHANG D K, WANG Q L, et al. Preparation and properties of a new cutting pick of coal shearers[J]. Mining Science and Technology, 2010, 20: 794–796.
SU C J, ZHANG G H, ZHAO J. Researches of warm extrusion forming technology and property on 42CrMo steel cutting pick[J]. Advanced Materials Research, 2011, 337: 536–541.
SU C J, LI Q L, XIAO L J, et al. Mechanical analysis of warm extrusion precision forming on 42CrMo steel cutting pick[J]. Advanced Materials Research, 2012, 538–541: 1061–1066.
LI J N, LI H Q, WANG M, et al. Applications of WC-based composites rapid synthesized by consumable electrode in-situ metallurgy to cutting pick[J]. International Journal of Refractory Metals & Hard Materials, 2012, 35: 132–137.
LIU S Y, DU C L, CUI X X. Research on the cutting force of a pick[J]. Mining Science and Technology, 2009, 19(4): 514–517.
LIU S Y, DU C L, CUI X X, et al. Cutting experiment of the picks with different conicity and carbidetip diameters[J]. Journal of China Coal Society, 2009, 34(9): 1276–1280. (in Chinese)
SU O, AKCIN N A. Numerical simulation of rock cutting using the discrete element method[J]. International Journal of Rock Mechanics & Mining Sciences, 2011, 48: 434–442.
REHBINDER G. Some aspects on the mechanics of erosion of rock with a high speed water jet[C]//Third Intemational Simposium on Jet Cutting Technology, Chicago, USA, E1, 1976. New York: Springer, 1976: 1–20.
REHBINDER G. A theory about cutting rock with a water jet[J]. Rock Mechanics, 1980, (12): 247–257.
TUTLUOGLU L. Mechanism of WARC[C]//Proceedings of the USA Simposium on Rock Mechanism, Chicago, USA, E3, 1983, New York: Springer, 1983: 202–210.
LI X B, SUMMERS D A, RUPERT G, et al. Experimental investigation on the breakage of hard rock by the PDC cutters with combined action modes[J]. Tunnelling and Underground Space Technology, 2001, 16: 107–114.
KOTWICA K. Results of laboratory investigations into operating conditions of cutting tool[J]. Journal of Mining Science, 2003, 39(2): 168–173.
CICCU R, GROSSO B. Improvement of the excavation performance of PCD drag tools by water jet assistance[J]. Rock Mechanics and Rock Engineering, 2010, 43: 465–474.
OZCELIK Y, TERCAN A E, CICCU R, et al. A Study of nozzle angle in stone surface treatment with water jets[J]. Construction and Building Materials, 2011, 25: 4271–4278.
OZCELIK Y, CICCU R, COSTA G. Comparison of the water jet and some traditional stone surface treatment methods in different lithotypes[J]. Construction and Building Materials, 2011, 25: 678–687.
OZCELIK Y, GURSEL M, CICCU R, et al. Optimization of working parameters of water jet cutting in terms of depth and width of cut[J]. Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2012, 226(1): 64–78.
YANG X F, LI X H, LU Y Y. Wear characteristics of the cemented carbide blades in drilling limestone with water jet[J]. International Journal of Refractory Metals & Hard Materials, 2011, 29: 320–325.
LU Y Y, TANG J R, GE Z L, et al. Hard rock drilling technique with abrasive water jet assistance[J]. International Journal of Rock Mechanics & Mining Sciences, 2013, 60: 47–56.
PENG G Y, SHIMIZU S J. Progress in numerical simulation of cavitating water jets[J]. Journal of Hydrodynamics, 2013, 25(4): 502–509.
DEHKHODA S, HOOD M. An experimental study of surface and sub-surface damage in pulsed water-jet breakage of rocks[J]. International Journal of Rock Mechanics & Mining Sciences, 2013, 63: 138–147.
DEHKHODA S, HOOD M. The internal failure of rock samples subjected to pulsed water jet impacts[J]. International Journal of Rock Mechanics & Mining Sciences, 2014, 66: 91–96.
GRYC R, HLAVÁČ L M, MIKOLÁŠ M, et al. Correlation of pure and abrasive water jet cutting of rocks[J]. International Journal of Rock Mechanics & Mining Sciences, 2014, 65: 149–152.
AYDIN G. Recycling of abrasives in abrasive water jet cutting with different types of granite[J]. Arabian Journal of Geosciences, 2014, 15: 278–282.
CICCU R, GROSSO B. Improvement of Disc cutter performance by water jet assistance[J]. Rock Mechanics and Rock Engineering, 2014, 47: 733–744.
LIU S Y, LIU Z H, CUI X X, et al. Rock breaking of conical cutter with assistance of front and rear water jet[J]. Tunnelling and Underground Space Technology, 2014, 42: 78–86.
LIU S Y, CHEN J F, LIU X H. Rock breaking by conical pick assisted with high pressure water jet[J]. Advances in Mechanical Engineering, 2014.
SONG D Z, WANG E Y, LIU Z T, et al. Numerical simulation of rock-burst relief and prevention by water-jet cutting[J]. International Journal of Rock Mechanics & Mining Sciences, 2014, 70: 318–331.
QU Q L, WU J L, GUO B D, et al. Numerical simulation of sphere impacting water by SPH with hydrodynamics[J]. Advanced Materials Research, 2013, 625: 104–108.
LIAO H L, LI G S, NIU J L. Influential factors and mechanism analysis of rock breakage by ultra-high pressure water jet under submerged condition[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(6): 1243–1250. (in Chinese)
MA G W, WANG X J, REN F. Numerical simulation of compressive failure of heterogeneous rock-like materials using SPH method[J]. International Journal of Rock Mechanics and Mining Sciences, 2011, 48(3): 353–363.
WANG J M, GAO N, GONG W J. Abrasive water jet machining simulation by coupling smoothed particle hydrodynamics finite element method[J]. Chinese Journal of Mechanical Engineering, 2010, 23(5): 568–573.
BUI H H, SAKO K, FUKAGAWA R. Numerical simulation of soil-water interaction using smoothed particle hydrodynamics (SPH) method[J]. Journal of Terramechanics, 2007, 44: 339–346.
SONG Z C, CHEN J M, LIU F. Numerical simulation for high-pressure water jet breaking rock mechanism based on SPH algorithm[J]. Oil Field Equipment, 2009, 38(12): 39–43.
YU T, TENG J G, WANG Y L, et al. Finite element modeling of confined concrete-I:Drucker-Prager type plasticity mode[J]. Engineering Structures, 2010, 32(3): 665–679.
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Supported by National Natural Science Foundation of China(Grant No. 51375478), the Fundamental Research Funds for the Central Universities, China(Grant No. 2014ZDPY12), and the Priority Academic Program Development of Jiangsu High Education Institute of China
LIU Songyong, born in 1981, is currently a professor at School of Mechatronic Engineering, China University of Mining and Technology, China. He received his PhD degree from China University of Mining and Technology, China, in 2009. His research interests include the design and dynamics of excavation machinery, rock breaking assisted with water jet.
LIU Xiaohui, born in 1988, is currently a PHD candidate at School of Mechatronic Engineering, China University of Mining and Technology, China. He received his bachelor degree from China University of Mining and Technology, China, in 2011. His research interests include the design and dynamics of excavation machinery, rock breaking assisted with water jet.
CHEN Junfeng, born in 1989, is currently an engineer at Research Institute of Zhejiang University, Taizhou, China. He received his master degree from China University of Mining and Technology, China, in 2014. His research interests include the design and dynamics of excavation machinery, rock breaking assisted with water jet.
LIN Mingxing, born in 1966, is currently a professor at School of Mechanical Engineering, Shandong University, China. He received his PhD degree from China University of Mining and Technology, China, in 1999. His research interests include machine vision detection, micro machining and manufacturing.
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Liu, S., Liu, X., Chen, J. et al. Rock breaking performance of a pick assisted by high-pressure water jet under different configuration modes. Chin. J. Mech. Eng. 28, 607–617 (2015). https://doi.org/10.3901/CJME.2015.0305.023
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DOI: https://doi.org/10.3901/CJME.2015.0305.023