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| Research on rock burst prevention and control technology in No.2303 Face of Guotun Mine |
| Zhang Quan， Zheng Yining |
| Dongtan Mine, Yankuang Energy Group Co., Ltd., Jining 272000, China |
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Abstract Mastering the prevention and control technology of rock burst is of great significance to the safe and efficient production of coal mines. By analyzing the main control factors of rockburst in No.2303 Face of Guotun Mine, targeted prevention and control measures were put forward, and carried out field application. The following conclusions were obtained: ① The order of main control factors of impact disaster in No.2303 Face was: mining depth factor>roof rock structure factor>geological structure factor>mechanical properties of coal and rock mass; ② The on-site microseismic monitoring results showed that after adjusting the roadway section and support scheme, the total frequency of microseismic events had decreased, the energy decline trend was obvious, and the single maximum energy and total energy of microseismic events had decreased significantly; ③ The stress monitoring results showed that the stress of the two roadways was slightly increasing in the process of pushing and mining, but the overall change range was small, which conformed to the normal stress transmission and evolution law. The research results were of great significance to the prevention and control of rock burst in Guotun Mine.
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