Cutting Characteristics and Reliability Analysis of Conical Picks Containing Prefabricated Grooved Rocks

• Autorzy: Zhang Xin , Li Juntao , Li Xu , Li Qinghai

Identyfikatory

DOI

10.17531/ein/191694

• Języki publikacji: EN

Abstrakty

EN

When a roadheader breaks hard rock in a roadway, the excessive cutting load causes the conical pick to experience abnormal wear, which impacts equipment stability. To improve the reliability of hard rock cutting equipment, the dynamic characteristics of prefabricated grooved rocks during cutting were investigated using a single pick cutting experimental bench in rock crushing experiments, and a conical pick cutting rock breaking finite element model was established. The rock stress state under different cutting depths and spacing conditions was analyzed, and the cutting force and the trend of the change in the specific energy consumption were elucidated. The results show that prefabricated grooves can effectively reduce the cutting load and specific energy consumption, the cutting depth and conical pick–groove spacing are the key factors affecting the cutting characteristics, and a reasonable choice of spacing and depth can help reduce the wear of conical picks and improve the working reliability of roadheaders.

Słowa kluczowe

EN

reliability; cutting load; roadheader; conical pick; prefabricated groove

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2024
• Tom: Vol. 26, no. 4
• Strony: art. no. 191694
• Opis fizyczny: Bibliogr. 30 poz., rys., tab., wykr.

Twórcy

autor

Zhang Xin

• College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, China

autor

Li Juntao

• College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, China

• https://orcid.org/0009-0009-0207-1682

autor

Li Xu

• College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, China

• https://orcid.org/0000-0002-7730-3646

autor

Li Qinghai

• Zhuanlongwan Coal Mine, Ordos Energy Company, China

Bibliografia

• 1. Guo D, Song Z, Liu N, Xu T, Wang X, Zhang Y, et al. Performance Study of Hard Rock Cantilever Roadheader Based on PCA and DBN. Rock Mechanics and Rock Engineering. 2024;57(4):2605-2623. https://doi.org/10.1007/s00603-023-03698-1
• 2. Zhang X, Li X, Xu W, Gao K, Jiang K, Wang X, et al. Experimental investigation of the failure of conical picks under thermal and abrasive effects. Engineering Failure Analysis. 2024;156:107737.https://doi.org/10.1016/j.engfailanal.2023.107737
• 3. Su O, Akkaş M. Assessment of pick wear based on the field performance of two transverse type roadheaders: a case study from Amasra coalfield. Bulletin of Engineering Geology and the Environment. 2020;79(5):2499-2512. https://doi.org/10.1007/s10064-019-01712-x
• 4. Liu S, Ji H, Liu X, Jiang H. Experimental research on wear of conical pick interacting with coal-rock. Engineering Failure Analysis. 2017;74:172-187.https://doi.org/10.1016/j.engfailanal.2017.01.013
• 5. Zhao G, Jin X, Zhao L, Zhou W, Liu X. Experimental and numerical evaluation for drum dynamic reliability under extremely complex working conditions. Scientific Reports. 2024;14(1):642. https://doi.org/10.1038/s41598-024-51266-6
• 6. Praetzas C, Teppernegg T, Mayr J, Czettl C, Schäfer J, Abele E. Investigation of Tool Core Temperature and Mechanical Tool Load in Milling of Ti6Al4V. Procedia CIRP. 2018;77:118-121.https://doi.org/10.1016/j.procir.2018.08.240
• 7. Liu X, Tang P, Geng Q, Li X, Tian M. Numerical research on wear mechanisms of conical cutters based on rock stress state. Engineering Failure Analysis. 2019;97:274-287.https://doi.org/10.1016/j.engfailanal.2019.01.045
• 8. Li HS, Liu SY, Xu PP. Numerical simulation on interaction stress analysis of rock with conical picks. Tunnelling and Underground Space Technology. 2019;85:231-242.https://doi.org/10.1016/j.tust.2018.12.014
• 9. Zhang X, Jiang H, Tian M, Li H, Chen H. Rock cutting performance and wear characteristics of undercutting disc cutter: Based on experiment and DEM. Wear. 2023;528-529:204976.https://doi.org/10.1016/j.wear.2023.204976
• 10. Sun R, Mo J, Zhang M, Su Y, Zhou Z. Cutting performance and contact behavior of partial-wear TBM disc cutters: A laboratory scale investigation. Engineering Failure Analysis. 2022;137:106253.https://doi.org/10.1016/j.engfailanal.2022.106253
• 11. Dogruoz C, Bolukbasi N, Rostami J, Acar C. An Experimental Study of Cutting Performances of Worn Picks. Rock Mechanics and Rock Engineering. 2016;49(1):213-224.https://doi.org/10.1007/s00603-015-0734-x
• 12. Wang Z, Zeng Q, Wan L, Lu Z, Wang H. Investigation of the Influence of Cutting Parameters on Conical Pick Cutting Performance and Rock Damage. Machines [Internet]. 2022; 10(11):[1034 p.]. https://doi.org/10.3390/machines10111034
• 13. Wang X, Su O, Wang Q-F, Liang Y-P. Effect of cutting depth and line spacing on the cuttability behavior of sandstones by conical picks. Arabian Journal of Geosciences. 2017;10(23):525. https://doi.org/10.1007/s12517-017-3307-3
• 14. Jiang H, Cai Z, Zhao H. Numerical study of hard rock breakage under indenter impact by the hybrid FDEM. Engineering Fracture Mechanics. 2020;233:107068.https://doi.org/10.1016/j.engfracmech.2020.107068
• 15. Jiang H, Cai Z, Wang O, Meng D. Experimental and Numerical Investigation of Hard Rock Breakage by Indenter Impact. Shock and Vibration. 2020;2020:2747830. https://doi.org/10.1155/2020/2747830
• 16. Li M, Han B, Zhang S, Song L, He Q. Numerical simulation and experimental investigation on fracture mechanism of granite by laser irradiation. Optics & Laser Technology. 2018;106:52-60.https://doi.org/10.1016/j.optlastec.2018.03.016
• 17. Guo C, Sun Y, Yue H, Li Q, He S, Zhang J, et al. Experimental research on laser thermal rock breaking and optimization of the process parameters. International Journal of Rock Mechanics and Mining Sciences. 2022;160:105251.https://doi.org/10.1016/j.ijrmms.2022.105251
• 18. Zhu X, Luo Y, Liu W. On the rock-breaking mechanism of plasma channel drilling technology. Journal of Petroleum Science and Engineering. 2020;194:107356.https://doi.org/10.1016/j.petrol.2020.107356
• 19. Wen S, Du L, Kong Q, Zhang M, Ding X. Study on Microwave-assisted TBM Double-edged Cutter Rock-breaking Efficiency and its Positional Relationship. Eksploatacja i Niezawodność – Maintenance and Reliability. 2024;26(2). https://doi.org/10.17531/ein/186447
• 20. Yang H, Lin H, Wang Y, Cao R, Li J, Zhao Y. Investigation of the correlation between crack propagation process and the peak strength for the specimen containing a single pre-existing flaw made of rock-like material. Archives of Civil and Mechanical Engineering. 2021;21(2):68. https://doi.org/10.1007/s43452-021-00175-w
• 21. Ping Q, Wang S, Wu Y, Sun S, Shen K, Wang C, et al. Study on Mechanical Properties and Energy Consumption of Fissured Sandstone with Different Dip Angles under Impact Load. Shock and Vibration. 2022;2022:5335357. https://doi.org/10.1155/2022/5335357
• 22. Huang Y-H, Yang S-Q, Tian W-L. Crack coalescence behavior of sandstone specimen containing two pre-existing flaws under different confining pressures. Theoretical and Applied Fracture Mechanics. 2019;99:118-130.https://doi.org/10.1016/j.tafmec.2018.11.013
• 23. Li Z, Wang L, Li W. Mechanical Behavior and Fracture Characteristics of Rock with Prefabricated Crack under Different Triaxial Stress Conditions. Minerals [Internet]. 2022; 12(6):[673 p.]. https://doi.org/10.3390/min12060673
• 24. Li B, Hu M, Zhang B, Li N, Shao W, Nie L, et al. Numerical simulation and experimental studies of rock-breaking methods for pre-grooving-assisted disc cutter. Bulletin of Engineering Geology and the Environment. 2022;81(3):90. https://doi.org/10.1007/s10064-022-02594-2
• 25. Wang H, Liao H, He Y, Niu W, Wei J, Niu J, et al. Experimental and numerical simulation study on the effect of granite grooving characteristics on PDC cutter cutting performance. Geoenergy Science and Engineering. 2023;230:212256.https://doi.org/10.1016/j.geoen.2023.212256
• 26. Zhang X, Jiang H, Li H, Gu C, Zhao L. Rock fragmentation using the disc tool assisted by the prefabricated kerf: Numerical modelling based on discrete element method (DEM). Engineering Fracture Mechanics. 2023;282:109159.https://doi.org/10.1016/j.engfracmech.2023.109159
• 27. Lu Y, Zhang S, He F, Wang L, Wang A, Wang M. Experimental and numerical simulation study on the relationship between cutting depth of high-pressure water jet with high traverse speed and disc cutter penetration of TBM in hard rock tunnel. Tunnelling and Underground Space Technology. 2023;142:105387.https://doi.org/10.1016/j.tust.2023.105387
• 28. Ma D-j, Wan L-r, Gao K-d, Zeng Q-l, Wang X-m. The meshing and failure analysis of haulage wheels with the effect by shearer’s poses. Engineering Failure Analysis. 2022;137:106251.https://doi.org/10.1016/j.engfailanal.2022.106251
• 29. Ma D, Wan L, Zhang X, Zeng Q, Gao K. Meshing characteristics and failure analysis of shearer walking wheel considering torsional deformation. Alexandria Engineering Journal. 2022;61(7):5771-5782.https://doi.org/10.1016/j.aej.2021.09.035
• 30. Wang Z, Wang H, Wang J, Tian N. Finite element analyses of constitutive models performance in the simulation of blast-induced rock cracks. Computers and Geotechnics. 2021;135:104172.https://doi.org/10.1016/j.compgeo.2021.104172