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| Analysis on Numerical Simulation of Anchor Setting Parameters in the Semi-coal and Semi-rock Roadway |
| ZHENG Yang1, HE Chong-chong2, XI Chao-dong2,3, YAO Biao2,3, LIU Bin-hui2,3 |
| 1. College of Automotive Engineering,Qingdao Technicians College,Qingdao 265000,China; 2. College of Resource and Safety Engineering,China University of Mining and Technology (Beijing); Beijing 100083,China; 3. State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology (Beijing); Beijing 100083,China |
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Abstract Based on the support problem of semi-coal and semi-rock roadway which is caused by non-uniform lithology and different mechanical properties of surrounding rock,No.5707 track roadway in Jinhuagong Mine was selected as research object. On the basis of the original supporting conditions,the stress distribution and displacement characteristics of this roadway were studied by FLAC3D numerical simulation in the different setting parameters of the same anchor. The results showed that the support effect is much better when the spacing of top anchor is 1000 mm and the angle of anchor in side wall is 30°.
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