# Stability Assessment of Gob Side Entry at the Steeply Inclined Mining Face
## 1 Introduction  
The challenging issue of surrounding rock control in deep roadways mostly arises from the increasingly complicated environment associated with greater mining depth [1, 2]. The most prevalent factors include elevated ground stress, extreme temperatures, significant karst water pressure, and intense mining disturbance. This problem poses significant hurdles to the advancement of roadside support technology. During the excavation and extraction process, the distribution of advance abutment pressure varies. Engineering geological constraints led [PERSON] and [PERSON] [3] to reject feasible supporting systems for the gob side entrance at an isolated island coal face. [PERSON] and [PERSON] [4] formulated a mechanical model illustrating the dynamic process of roof deformation and computed the principal technical parameters in gob side entry driving. [PERSON] [5] validated the gob side entry deformation method and introduced coupling control technology. [PERSON] [6] examined the areas of maximum roadway roof deformation in an island mining panel. [PERSON] [7] established coal pillar width through the analysis of lateral support stress distribution and rock deformation. [PERSON] and [PERSON] [8] demonstrate that deep roadways are susceptible to significant deformation due to elevated stress, complicating management efforts. [PERSON] and [PERSON] [9] build a numerical model in UDEC to examine the failure characteristics and support scheme of haulage roadways. [PERSON] and [PERSON] [10] investigated the deformation features of adjacent rock and the behavior of strata during gob sideentry. [PERSON] [11] demonstrated an asymmetric control technique to ensure roadway safety, grounded in the caving motion law of overlaying strata in island coal faces. [PERSON] [12] devised an integrated early warning system for rock burst occurrences in island coal faces. [PERSON] [13] observed that stability control methods and reduced coal pillar width influence rock deformation. [PERSON] and [PERSON] [14] investigated the flexibility of light-powered support at the top-coal caving face by the analysis of systematic monitoring data. [PERSON] [15] examined the elastic strain energy released from roof fracture, the distribution of seismic events, and fault displacement. In coal mining with significant dip, [PERSON] and [PERSON] [16] utilized a physical model to examine the characteristics of crack evolution. Numerical simulation methodologies have been utilized to analyze the migration of mining pressure in steep dip slopes [17; 18; 19]. The results indicate that the tension on the bottom of the gob is greater than that on the upper side. The advanced part of the gob side entry has a heightened propensity for rock bursts due to mining disturbances. [PERSON] et al. examined the deformation properties of gob side entries. Utilizing rock mechanical techniques [20; 21], they examined the stress distribution in the gob side pillar or backfilling sidewall. Researchers have achieved advancements in the investigation of the failure mechanisms of pillars [22; 23]. Tectonic stress significantly impacts mining projects. [PERSON] [24] discovered that rock mechanics parameters influence the developing characteristics of tectonic cracks in sedimentary basins. [PERSON] [25] assessed the relative deviatoric stress field on Kyushu Island. Through the analysis of observed stress, pore pressure, and mechanical rock property data, [PERSON] and [PERSON] [26] conclude that exogenous tectonic forces are present. [PERSON] [27] conducted numerical simulations and geological analyses to ascertain the cause of overpressure in relation to mudstone and sandstone. Selecting appropriate supporting parameters can more effectively meet the demands of surrounding rock stabilization in the vacant roadway. In an unoccupied roadway with specific conditions, if the surrounding rock stress is substantial and the coal rock is fractured, it is challenging to implement a singular bolt support system to satisfy the requirements for roadway maintenance.