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| Study on real-time microseismic monitoring of water damage in Xinji No.2 Mine floor |
| Wu Dong1, Gao Shengbao1, Zhao Lisong2,3, Lu Gang2,3 |
| 1. Xinji No. 2 Mine, China Coal Xinji Energy Corporation, Huainan 232000, China; 2. Hebei Coal Science Research Institute Corporation Ltd., Xingtai 054000, China |
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Abstract In order to strengthen the monitoring of water damage in the bottom plate of Xinji No.2 Mine under the condition of band pressure mining, the microseismic real-time, continuous and full spatial monitoring advantages were brought into play, and a microseismic monitoring system was constructed in the deep mine for real-time monitoring of the retrieval process. The monitoring results were summarized, and the overall distribution and spatial and temporal transport patterns of microseismic events were analyzed to study the relationship between mining activities and sudden water risk. The results showed that there were no hidden water-conducting structures or fracture weak zones within 150 m of the bottom plate during the workings. There was no activation of the structure during the workface recovery, and there was no risk of sudden water breakout during the recovery process, which ensured the safe recovery of the workface.
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