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| Application of high prestressed anchor bolt joint support technology in Dongfeng Mine |
| Si Hongyong |
| Shanxi Lanhua Group Dongfeng Mining Corporation Ltd., Jincheng 048400, China |
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Abstract High prestressing, high strength left - screw steel bolt and new-typed No. 19 loose wire anchor cable support, combined with W steel belt and other supports, realizing anchor cable and bolt joint support, the technology effectively controlled roadway surrounding rock deformation volume, with a bright future of application and dissemination.
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