- School of Carbon Neutrality Science and Engineering, Anhui University of Science and Technology, Hefei, China (249998031@qq.com)
In the process of coal mining, pressure will be induced in the mining face, resulting in the stress concentration of surrounding rock, which will affect the safety and orderly normal operation of coal energy mining. The all-fiber optic micro-seismic monitoring technology has the advantages of high sensitivity, wide range and high safety, and can monitor the pressure activity of coal mine in real time. Taking the II1012 mining face of Taoyuan Coal Mine as the engineering background, the all-fiber optic micro-seismic monitoring work is carried out, and the data are analyzed by the methods of micro-seismic event detection, identification, classification and location. The characteristics of micro-seismic activity during the first pressure, periodic pressure and square pressure are studied. The results show that: Large energy events in the first pressure stage play a major role in roof failure, and the first pressure interval is 25.10 m. In the periodic pressure stage, the influence of micro-seismic activity on the roof is greater than that on the floor, but the influence on the floor is increasing. The large energy events increase significantly in the square pressure stage, which is easy to promote the frequent occurrence of high intensity and stress micro-seismic activities. The occurrence of micro-seismic events in mine pressure phases have advanced characteristics. There is a positive correlation between the intensity of micro-seismic activity and the rate of recovery, and the all-fiber optic micro-seismic has a good response to the mine pressure. The research work provides theoretical basis and technical support guidance for the safe production of the II1012 mining face in Taoyuan Coal Mine and other similar mining faces in other coal mines, reduces the risk of geological disasters caused by micro-seismic events during the pressure period, and further guarantees the safe and normal orderly development of the subsequent production work of the mining face. It is of great significance to the safe mining of coal energy and the supply of production and life.
How to cite: Wang, K.: Research on Coal Mine Pressure Characteristics Based on All-fiber Optic Micro-seismic Monitoring, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-17795, https://doi.org/10.5194/egusphere-egu25-17795, 2025.