## 1 Introduction  
The presence of structural plane or other defects in deep rock mass is an unavoidable and complex heterogeneity medium. Their random distribution has an obvious deteriorating impact on the rock's mechanical behavior and greatly impacts the tunnel's surrounding rock stability [1; 2; 3; 4]. As the construction depth increases, along with the geological environment and construction characteristics by three \"high\" and one \"disturbance\", a large amount of strain energy accumulates in deep hard rock, providing the essential condition for the rockburst occurrence [5]. The existence of rigid structural planes with different scales is likely to induce extremely intense rockbursts, and the structural plane effect plays a critical part in the rockburst catastrophe [6; 7; 8]. Therefore, revealing the rockburst catastrophic mechanism induced by tunnel excavation with rigid structural planes is of great engineering significance for the safe and normal construction of deep tunnels. Currently, rockburst can be categorized into strain-type rockburst, structural-slip rockburst, and strain-structural plane slip rockburst according to the occurrence mechanism, in which the strain-structural plane slip rockburst is mainly controlled by factors such as rigid structural plane and high ground stress [9]. According to the rock lithology and the stress state during the strain-structural plane slip rockburst in engineering sites, numerous scholars have conducted a series of laboratory tests with different rock samples, loading paths, and boundary conditions, and they have explored the catastrophic process and influencing factors of this type of rockburst. [PERSON] et al. [10] carried out strain-structural plane rockburst tests on fissured sandstone under uniaxial compression to analyze the fissure propagation pattern and rockburst prediction. [PERSON] et al. [11] studied the effect of rigid structural planes on rockbursts under biaxial compression, they analyzed the rockburst evolution process and its microscopic characteristics. [PERSON] et al. [12] carried out rockburst tests of granite with different fissure angles under true triaxial single-sided unloading, and they discussed the occurrence mechanism of rockburst from the mechanical properties and energy evolution characteristics. The above studies have revealed the disaster-causing mechanism of this rockburst type from the experimental view. Considering the difficulty in prefabricating the structural plane within the sample, the difficulty in controlling structural plane parameters, and the difficulty in reproducing the catastrophic process of this rockburst type during loading, scholars have explored the structural plane effect on rockburst from the engineering scale combined with the numerical methods. [PERSON] et al. [13] used the Abaqus\({}^{2}\)DC code to study the structural plane effect on the occurrence and damage of rockburst, they found that if the location and orientation of the structural plane increase the stress or decrease the system stiffness, rockburst may be induced. Combining the finite element method, [PERSON] et al. [14] conducted a numerical study on the failure characteristics and mechanism of a deep hard rock cavern under the influence of structural planes. Moreover, Rock failure is a gradual process from continuous to discontinuous discrete coupling, and more scholars have begun to use the discrete element method or the finite-discrete element coupling method to conduct in-depth research on the geotechnical engineering and tunnel failure mechanism [15]. [PERSON] et al. [16] analyzed the progressive face failure of a shield tunnel with the coupled discrete element and finite difference method. [PERSON] et al. [17] used GDEM to study the influence of the number and scale of the vertical structural plane on the mechanical motion characteristics of the surrounding rock and revealed the evolution mechanism of structural plane rockburst.