References
- Chen, L., Shi, P., Tang, Q., Liu, W., & Wu, Q. (2020). Development and application of a specification-compliant highway tunnel facility management system based on BIM. Tunnelling and Underground Space Technology, 97, 103262.
- Dayong, H., Xingwu, Z., Lei, L., Hao, C., Dong, L., Zihai, Y., & Jiajia, Y. (2025). Study on the construction method for in-situ expansion of existing large cross-section tunnels. Discover Applied Sciences, 7(6), 556.
- Feng, G., & Liu, F. (2017). Analysis on mechanical properties of surrounding rock of two-lane tunnel expanded into four-lane tunnel. Highway, 62(10), 288–293.
- Xiaofei G. (2019). Criterion of plastic zone shapes of roadway surrounding rock and its application. [Master’s thesis, China univeristy of mining&technology-Beijing].
- Hu, J., & Huang, L. (2011). Study on deformation and mechanical properties of surrounding rock of in-situ expansion tunnel. Highway Traffic Technology, 2011(06), 83–87.
- Huang, Z., Zhang, Y., Li, Y., Zhang, D., Yang, T., & Sui, Z. (2021). Determining tensile strength of rock by the direct tensile, Brazilian splitting, and three‐point bending methods: A comparative study. Advances in Civil Engineering, 2021(1), 5519230.
- Hernández, Y. Z., Farfán, A. D., & de Assis, A. P. (2019). Three-dimensional analysis of excavation face stability of shallow tunnels. Tunnelling and Underground Space Technology, 92, 103062.
- Luo, Y., Chen, J., Shi, Z., Li, J., & Liu, W. (2020). Mechanical characteristics of primary support of large span loess highway tunnel: A case study in Shaanxi Province, Loess Plateau, NW China primary. Tunnelling and Underground Space Technology, 104, 103532.
- Krupík, P. (2025). The Impact of Road Infrastructure Development on Selected Environmental, Economic, and Social Indicators. Civil and Environmental Engineering, 0(0), 2025. https://doi.org/10.2478/cee-2026-0022.
- Li, L., Zhang, X., Deng, H., & Han, L. (2020). Mechanical properties and energy evolution of sandstone under uni-axial compression test at different loading rates. Journal of Mining and Strata Control Engineering, 2(04), 83–89.
- Liu, K., Liu, Q., Zhu, Y., & Liu, B. (2013). Experimental study on Brazilian splitting and uni-axial compression of coal and rock considering bedding direction effect. Journal of Rock Mechanics and Engineering, 32(02), 308–316.
- Meng, Q., Wang, H., Bai, L., Zhao, F. & Bai, J. (2025). Rock mass properties prediction method in TBM tunnel based on principal component analysis (PCA). Civil and Environmental Engineering, 0(0), 2025. https://doi.org/10.2478/cee-2026-0051.
- Ministry of Transport of the People’s Republic of China. (2018). Specifications for design of highway tunnels (JTG 3370.1–2018). China Communications Press.
- Ministry of Transport of the People’s Republic of China. (2025). 2024 Transport industry development statistical bulletin [Government report]. Ministry of Transport of the People’s Republic of China.
- Shu, Y., Jiang, S., & Lei, M. (2012). Construction mechanics analysis of expanded small clear distance highway tunnel. Journal of Chongqing Jiaotong University (Natural Science Edition), 31(02), 214–217, 251.
- Wan, M., Hai, H., Liu, J., & Liu, B. (2006). Deformation stability monitoring and active control of surrounding rock in long-span tunnel excavation. Journal of Chongqing University (Natural Science Edition), 2006(07), 149–151.
- Wu, Y., Liu, J., Wu, Z., Liu, J., Zhao, Y., Xu, H., & Zhong, W. (2024). A universal direct tensile testing method for measuring the tensile strength of rocks. International Journal of Mining Science and Technology, 34(10), 1443–1451.
- Wu, Z., Xu, G., Wu, L., & Ye, Q. (2009). Study on mechanical characteristics of surrounding rock in lateral expansion construction of super large section tunnel. Journal of Geotechnical Engineering, 31(02), 172–177.
- Yan, S., Wang, J. Q., & Xu, Y. D. (2024). The current status and prospects of integrated development of transportation and energy. Journal of Changsha University of Science and Technology (Natural Science Edition), 21(04), 1–27.
- Yang, H., Gao, J., Ding, Y., Chen, X., Lin, Z., Wu, H., & Yang, Z. (2025). Mechanical response of broken surrounding rock by in-situ expansion of highway tunnel. Bulletin of Engineering Geology and the Environment, 84(5), 1–17.
- Yang, S. Q., Ranjith, P. G., & Gui, Y. L. (2015). Experimental study of mechanical behavior and X-ray micro CT observations of sandstone under conventional triaxial compression. Geotechnical Testing Journal, 38(2), 179–197.
- You, M., Chen, X., & Su, C. (2011). Brazilian splitting strength of dry and saturated rock discs and rings. Journal of Rock Mechanics and Engineering, 30(03), 464–472.
- Zhang, J., Shi, B., Wang, J., Chen, Z., Gan, X., & Feng, J. (2021). Construction mechanics and safety analysis of “backfilling bench method” for in-situ expansion of four-lane highway tunnel in collapse section. Chinese Journal of Highway, 34(06), 109–124.
- Zhang, S. (2019). Research on tunnel expansion technology [Master’s thesis, Chongqing Jiaotong University].
- Zheng, X., Huang, F., Wang, S., Zeng, Z., Chen, S., & Xu, W. (2025). Research on detection and treatment of loose zones in weak fracture zone tunnel. Scientific Reports, 15(1), 1075.
- Zhong, Y. (2019). Field monitoring and analysis of in-situ expansion tunnel excavated by three-step construction method. Modern Tunnel Technology, 56(05), 170–179.