## 3 Result
### Progress of Stress-Energy of Surrounding Rock during Mining Excavation Disturbance
#### 3.1.1 Stress Evolution in the Process of Mining Excavation Disturbance
Monitoring points 11\(\#\) and 14\(\#\) are in the central coal pillar between the excavation face and the mining face. The evolution law of the two sensors is consistent in the first three stages, and the difference appears in the fourth stage. The pressure value of sensor 11\(\#\) rises slowly as it is closer to the excavation. Sensor 14\(\#\) is closer to the stopping position of the working face. When the working face is stopping 65-90 m, the overlying rock constantly deforms and the stress of the overlying rock is transferred to the coal pillars on both sides. Therefore, the pressure of sensor 14\(\#\) gradually jumps to the extreme value, indicating that the stopping position near the working face is still significantly affected by the stopping disturbance. Monitoring points 34\(\#\), 35\(\#\), 39\(\#\), and 40\(\#\) are in the mid and low roof of the stopping face and the central coal pillar, respectively. The distance from the working face is 11 m and 47 m, respectively. The evolution law of these measuring points in the first three stages is the same; that is, the rapid rise in the early stage and a slight decline, then a continuous rise to the extreme value, and a step-like decline in the middle stage. After mining, the direct roof rises along with mining, while the old roof breaks step by step, with the periodic adjustment of surrounding rock stress. At the end of mining, the 35\(\#\) sensor above the working face is in the fracture zone, the surrounding rock damage develops to the interior, and the stress decreases significantly. The pressure value of sensor 34\(\#\), which is located directly above the stop-mining position, increases significantly to the maximum range of the sensor due to the fracture of the old top of the working face and the formation of an articulated rock beam structure. The 39\(\#\) and 40\(\#\) sensors are in the high key layer, which is less affected by the disturbance of mining and excavation under static loading and shows a slowly increasing trend. To sum up, the basic law of stress evolution of roadway surrounding rock under the influence of opposite mining and excavation disturbance is as follows:  
1. The internal stress evolution of the excavation face, central coal pillar, and mining face surrounding rock can be divided into four stages: the rapid rise and a slight decline in the early stage, continuous rise to the extreme value later, the step-like decline in the middle stage, and rise in the late stage;
2. Around the roadway excavation, the farther away from the roadway, the smaller the impact of mining and excavation, and the lower the stress concentration;
3. Under the influence of mining, the integrity of the surrounding rock is damaged, and the cracks expand gradually, leading to a certain degree of pressure reduction;
4. The stress peak of the mining face appears at a place about 20-25 m ahead of the mining face, and the impact risk is the highest when superimposed with the mining stress field of the mining face, which is consistent with the theoretical calculation results;
5. Under the influence of quasi-static stopping, the upper key stratum has not reached the breaking condition, and the pressure is stable.