## 1 Introduction
proposed the use of NPR anchor cables to compensate for the peripheral rock stress, control the penetration of nodal fissures, and then improve the strength of the rock by using more than grouting technology to increase the power of the stone, and cutting the top of the unloading pressure to reduce the force of the peripheral rock to maximize the restriction of the movement of the tunnel peripheral rock structures [21]. [PERSON] et al. defined the critical parameters of thin coal mine roof cutting and pressure unloading by analyzing the state and force of the overlying roof collapse during the thin coal seam mining process [22]. [PERSON] et al. found that when the working face burial depth exceeds the first critical value, the roadway will have a nonlinear large deformation, so roof-cutting + a U-shape support was proposed to guarantee the stability of the roadway's peripheral rock deformation [23]. [PERSON] et al. studied the characteristics of overburdened rock damage and fissure development in the mining airspace under the condition of roof-cutting, and the collapse height of the key rock layer and the controlled upper rock layer increased after roof-cutting, which provided sufficient support for the upper rock layer and, at the same time, reduced the proportion of fissures [24]. [PERSON] et al. established a different uncoupling coefficient aggregation blasting model to determine the optimal charging structure; the blasting effect is good, and the waterproof coal pillar has played an excellent protective effect [25]. [PERSON], [PERSON] et al. optimized the support design to take into account the dual effects of mining stress and vault collapse [26]. [PERSON] et al. conducted a systematic review of the critical technical data of deep tunnel bedding, and deduced the relevant data of bedding bursting according to the \"S-R\" stability principle and rock crushing and expansion characteristics, to ensure smooth bedding of the lateral top plate into the roadway upon mining return [27]. [PERSON] et al. analyzed the dynamic pressure influence brought by the mining process through the theory of roof cutting and LS-DYNA numerical analysis, and concluded that directional roof cutting, with the obvious effect of pressure unloading, can effectively control the deformation of the surrounding rock [28]. [PERSON] proposed the use of chemical adhesives to enhance the strength of the connection between the roof slabs and the method for improving the strength of shield support during the mining process, which effectively solved the phenomenon of roof slab collapse [29]. [PERSON] et al. put forward the technology of roof-cutting pressure relief + grouting reinforcement for the frequent bulging and bottom-drumming phenomenon of soft rock roadways in water-rich areas [30]. [PERSON] et al. used three zones (A, B, C) of targeted zonal support for the retreat roadway, giving full play to the support efficiency of the anchor rods and cables, to ensure the safety and stability of the retreat roadway [31]. The wide application of roof cutting and pressure relief is due to the continuous research of scholars at home and abroad in the above-mentioned roof cutting and pressure relief technology [32]. Many scholars mainly focus on the unloading support of the transportation roadway, and there are fewer studies on the stability control of the retraction roadway of the oversized mining high working face. The 108 coal mining face is the world's first fully mechanized mining project, with an extraordinarily high mining height of 8.2 m. The hydraulic supports used here each weigh 78.2 tons, and there is limited experience with withdrawing such supports. This situation poses significant challenges for supporting the retreating roadway, and addressing the technical issues related to the withdrawal equipment aims to address these challenges by employing advanced roof cutting blasting and pressure relief techniques to mitigate the impact of rock beam rotation and reduce mechanical connections between the goat and the roadway roof [33].