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| Study on the hydraulic fracturing technology of directional long borehole and segmental hydraulic fracturing for the huge thick roof of Dongtan Mine |
| Zhan Qingchao1,2, Fu Wei2, Song Haizhou2 |
1. School of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
2. Dongtan Mine, Yanzhou Coal Industry Corporation Ltd., Zoucheng 273500, China |
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Abstract Mine tremors are a common and complex dynamic destabilization phenomenon in coal mining, inducing shock ground pressure and surface collapse. In order to prevent and control mine tremors in the Dongtan Mine, a new directional and long-bore hydraulic fracturing technique for the huge thick roof of the coal seam was proposed, which was based on the analysis of the occurrence and causes of mine tremors in the Dongtan Mine, the technolgy recieved good effect.
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