## 4 Results
### Displacement Evolution Analysis  
#### 4.2.1 Surrounding Rock Displacement of Main Inclined Shaft without Excavation Disturbance  
Figure 19 shows that the main inclined shaft is not disturbed by excavation, according to the Z direction and Y direction displacement evolution of the four monitoring areas of the section taken by the model. For X (10, 12), the maximum displacement of the main inclined shaft bottom plate is \(0.19465\) m. The maximum displacement of the two roadway sides is \(0.22394\) m and \(-0.23508\) m, respectively, and the maximum deformation of roadway surrounding rock is determined to be about \(0.2\) m. For X (25, 27), the maximum displacement of the main inclined shaft floor is \(0.31715\) m. The maximum displacement of the two sides is \(0.16951\) m and \(-0.29814\) m, respectively. For X (50, 52), the maximum displacement of the main inclined shaft bottom plate is \(0.25871\) m. The maximum displacement of the two roadways is \(0.24599\) m and \(-0.11255\) m, respectively. The bottom angle of the two roadways is the deformation concentration area. For X (67, 69), the maximum displacement of the main inclined shaft floor is \(0.35468\) m. The maximum displacements of the two roadway sides are \(0.35873\) m and \(-0.11920\) m, respectively. The bottom angle of the two roadway sides is the deformation concentration area. Because the surrounding rock of the main inclined shaft is six different lithology, the coal and rock mass moves in different degrees with the increase of buried depth, resulting in the increase of deformation of roadway with the increase of buried depth. Figure 19: _Cont._  
2.2 Surrounding Rock Displacement of Main Inclined Shaft after Excavation of Electromechanical Chamber  
Figure 20 shows the displacement evolution in the Z direction and Y direction of the four monitoring areas of the cross-section taken according to the model after the excavation of the electromechanical chamber. For X (10, 12), the maximum displacement of the main inclined shaft bottom plate is 0.19483 m. The maximum displacement of the two sides is 0.22825 m and \(-\)0.23926 m, respectively. For X (25, 27), the maximum displacement of the main inclined shaft floor is 0.35279 m. The maximum displacement of the two sides is 0.19938 m and \(-\)0.33527 m, respectively. For X (50, 52), the maximum displacement of the main inclined shaft bottom plate is 0.42116 m. The maximum displacements of the two roadway sides are 0.48972 m and \(-\)0.34228 m, respectively. The bottom angle of the two roadway sides is the deformation concentration area. The excavation of the electromechanical chamber increases the deformation of the surrounding rock of the main inclined shaft, and the maximum floor heave is 0.42 m. For X (67, 69), the maximum displacement of the main inclined shaft floor is 0.64301 m. The maximum displacements of the two roadways are 0.84553 m and \(-\)0.63284 m, respectively. The bottom angle of the two roadways is the deformation concentration area. This section is at the intersection with the electromechanical chamber. It can be seen the maximum floor heave reaches 0.64 m, and the maximum convergence of the two roadway sides reaches 0.84 m. In summary, after the excavation of the mechanical and electrical chamber at the bottom of the well, a large area of surrounding rock deformation occurs in the falling roadway of the main inclined shaft, mainly due to the floor heave  
Figure 19: Main inclined shaft and supporting state without excavation disturbance. 2.3 Surrounding Rock Displacement of Main Inclined Shaft after Excavation of Head Chamber of Belt Roadway  
Figure 21 shows the displacement evolution in the Z direction and Y direction of the four monitoring areas of the cross-section taken according to the model after excavating the head chamber of the belt roadway. For X (10, 12), the maximum displacement of the main inclined shaft bottom plate is 0.18826 m. The maximum displacement of the two sides is 0.25924 m and \(-\)0.28947 m, respectively.