Conference Proceedings - World Mining Congress 2026

1534 larger craters and more cuttings than spherical-spherical dual inserts. This indicates that the final fragmentation pattern is determined by the interaction between insert geometry and penetration parameters. ACKNOWLEDGEMENTS This work was supported by Open Funding of Anhui Province Key Laboratory of Intelligent and Green Mining of Deep Coal Resources (IGMDCR202402), Open Funding of Anhui Key Laboratory of Mining Construction Engineering, Anhui University of Science and Technology (GXZDSYS2024106), the Young Scientists Fund of the National Natural Science Foundation of China (No.52504073). REFERENCES A study on rock cutting efficiency and structural stability of a point attack pick cutter by lab-scale linear cutting machine testing and finite element analysis (2018). Int J Rock Mech Min. Park, J.Y., Kang, H., Lee, J.W., Kim, J.H., Oh, J.Y., Cho, J.W., Rostami, J., Kim, H.D. Assessment of brittleness using rock strength and density with punch penetration test (2009). Tunn Undergr Sp Tech.Yagiz, S. Development and application of hobbing-cone hybrid PDC bit (2023).Geomech Geophys Geo.Chen, L., Cao, Q., Qi, Q.L., Niu, S.W., Yang, Y.X., Chen, X., Zhao, Z.J., Wu, B. Evaluation of cutting efficiency during TBM disc cutter excavation within a Korean granitic rock using linear-cutting-machine testing and photogrammetric measurement (2013). Tunn Undergr Sp Tech, 37-54.Cho, J.W., Jeon, S., Jeong, H.Y., Chang, S.H. Experimental and analytical study on key factors of rock breaking under a single indenter (2023). Fatigue Fract Eng M. Wang, P., Yue, Z.W., Li, A.K., Ren, M., Gao, D., Bu, W.Y. Experimental investigation and numerical analyses for red sandstone rock fragmentation (2020).Int J Geomech. Zou, J.Q., Han, J.H., Zhang, T., Yang, W.H. Experimental study on the rock-breaking mechanism of disc-like hybrid bit (2018).J Petrol Sci Eng. Niu, S.W., Zheng, H.L., Yang, Y.X., Chen, L. Failure resistance research of the dual-stage hybrid bit (2023). Eng Fail Anal. Zhang, D., Yang, Y.X., Ren, H.T., Niu, S.W. Simulation and experimental study on temperature and stress field of full-sized PDC bits in rock breaking process (2020). Zhang, Z.Z., Zhao, D.J., Zhao, Y., Zhou, Y., Tang, Q.Q., Han, J.P. Structure design of weight-on-bit self-adjusting PDC bit based on stress field analysis and experiment evaluation (2021). J Petrol Sci Eng. Hu, H.G., Guan, Z.C., Zhang, B., Xu, Y.Q., Liu, Y.W., Wang, B. The improved rock breaking efficiency of an annular-groove PDC bit (2019). Huang, K.L., Ai, Z.J., Yang, Y.X., Xie, Z.L. The rock breaking mechanism analysis of axial ultra-high frequency vibration assisted drilling by single PDC cutter (2021). J Petrol Sci Eng. Zhao, Y., Zhang, C.S., Zhang, Z.Z., Gao, K., Li, J.S., Xie, X.B. Torsion and vibration reduction mechanism of roller PDC hybrid bit (2022). J Petrol Sci Eng. Huang, K.L., Yang, Y.X., Li, G., Wang, Y.T., Ren, H.T., Niu, S.W.

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