## 1 Introduction
The influence of depth on the dynamic stability of the tunnel was analyzed. The results demonstrated that deeper strata would suppress damage around the hole, and the tunnel was more prone to failure in the deeper strata. [PERSON] et al. [6] evaluated the dynamic stress concentration factor (DSCF) and energy evolution of deep-buried tunnels under explosive loads using theoretical formulas and numerical simulations. The study revealed that high static compressive stress concentration around the tunnel led to the accumulation of significant strain energy at the same location. Additionally, the top and bottom of the tunnel were more prone to dynamic failure during the explosion loading process. Furthermore, the analysis of energy dissipation showed that the reduction in strain energy and residual kinetic energy was positively correlated with the lateral pressure coefficient and tunnel burial depth. Under the same conditions, residual kinetic energy was found to be much greater than the reduction in strain energy. [PERSON] et al. [7] studied how seismic waves generated by open-pit blasting affected the stability of the surrounding rock mass near tunnels. The research results indicated that blasting vibrations had varying degrees of impact on the surrounding rock mass within a specific range, but the redistribution of loose rock mass did not lead to an increase in the surrounding loose rock mass. Additionally, the stress transfer of anchor bolts and linings before and after blasting was analyzed, and the performance and safety of the anchor bolts and linings were evaluated. [PERSON] et al. [8] conducted numerical modeling of existing circular tunnels under the influence of explosive shock waves using the UDEC code based on the discrete element method. The disturbed area around the circular tunnel, including the failure zone, open zone, and shear zone, was analyzed, and the peak particle velocity (PPV) on the tunnel surface was used to assess the tunnel damage. It was found that the orientation of rock joints around the tunnel had a significant influence on tunnel damage, while the initial stress around the tunnel had a relatively minor impact on tunnel damage. Anchor bolts could greatly enhance the stability of the tunnel by changing the vibration pattern of particle velocity instead of reducing the PPV. Some scholars have conducted extensive studies on the blast resistance of anchor bolts and anchor cable-supported tunnels from the perspectives of anchor type, blasting method, and support method [20; 21; 22; 23; 24]. [PERSON] et al. [20] conducted physical model tests using an anti-explosion model test device, studied the reinforcement effects of full-length bonded anchor bolts and elastic anchor bolts on the surrounding rock of caverns under planar charge explosion, compared the differences in wall strain, arch displacement, and bottom plate acceleration of the two types of anchor bolts under dynamic loads by analyzing the explosion pressure-time curve, and found that the test model had a better testing effect. [PERSON] et al. [21] studied the arch displacement and anchor bolt strain of anchor-spray-supported caverns under the action of explosion waves. [PERSON] et al. [22] studied the influence of cross-anchor cable on the anti-explosion and anti-penetration ability of caverns through similar model tests. [PERSON] et al. [23] analyzed the dynamic response problem of underground anchored caverns using the explicit finite element method. [PERSON] et al. [24] studied the tensile and compressive damage problems of anchor-supported caverns using numerical simulation techniques and found that anchor-reinforced caverns have a positive effect on their blast resistance. They can change the direction of damage development, suppress the formation of cracks, prevent explosion waves from passing through dense anchors, avoid damage to the arch part of the caverns, and effectively improve the tensile strength of surrounding rock of the caverns.