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| Mining Influenced Roadway Surrounding Rock Lithoclase Fissure Zone Distribution Law and Hole Sealing Depth |
| LI Xiao1, YAN Hai-feng2, LI Jian-hui1 |
| 1. No. 1 Mine, Pingdingshan Tian’an Mining Industry Corporation Ltd., Pingdingshan 467000, China; 2. Zhanggou Mine, Zhengmei Group, Zhengzhou 450000, China |
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Abstract Fissure zone around the roadway was taken as study object, numerical simulation, field test were adopted, fissure zone shape was scientifically settled as ellipse, and was tested, roadway surrounding fissure zone was in trap type distribution, there was a irregular fissures circle around roadway, fissure zone inside the roadway was not parallel with coal wall, with curved surface, the result provided scientific basis for gas extraction hole sealing depth.
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