建井技术
建井技術
건정기술
2014年
6期
23-25,47
,共4页
轨道大巷%修复加固%底鼓%反底拱%注浆
軌道大巷%脩複加固%底鼓%反底拱%註漿
궤도대항%수복가고%저고%반저공%주장
mine railway roadway%repair and reinforcement%floor heave%reverse floor arch%grouting
余吾煤业南风井＋400m水平南翼轨道大巷里程700～820m 段施工后，顶板下沉，两帮收敛，底鼓严重。部分区段经扩帮、拉底后，变形仍在持续，严重影响井下运输安全。根据该段巷道矿压显现特征，结合中国矿业大学专家意见，决定采用注浆、顶板补强支护、底板加固等措施进行修复加固。修复加固施工后，巷道稳定，围岩变形得到了很好的控制，收到了预期效果。
餘吾煤業南風井＋400m水平南翼軌道大巷裏程700～820m 段施工後，頂闆下沉，兩幫收斂，底鼓嚴重。部分區段經擴幫、拉底後，變形仍在持續，嚴重影響井下運輸安全。根據該段巷道礦壓顯現特徵，結閤中國礦業大學專傢意見，決定採用註漿、頂闆補彊支護、底闆加固等措施進行脩複加固。脩複加固施工後，巷道穩定，圍巖變形得到瞭很好的控製，收到瞭預期效果。
여오매업남풍정＋400m수평남익궤도대항리정700～820m 단시공후，정판하침，량방수렴，저고엄중。부분구단경확방、랍저후，변형잉재지속，엄중영향정하운수안전。근거해단항도광압현현특정，결합중국광업대학전가의견，결정채용주장、정판보강지호、저판가고등조시진행수복가고。수복가고시공후，항도은정，위암변형득도료흔호적공제，수도료예기효과。
After a construction at a 700~820m section of +400m level South Wing Railway roadway in Mine South Ventilation Shaft of Yuwu Coal Industry ,the roof was subsidence ,the two sidewalls were convergent and the floor heave was serious .After the sidewalls expanded and floor excavated in the partial section of the mine roadway ,the deformation of the mine roadway was continuous and was seri‐ously affected to the safety of the underground mine transportation .According to the mine strata pres‐sure behavior features of the mine roadway ,in combination with the expert’s comments from China U‐niversity of Mining and Technology ,a repair and reinforcement was conducted with the grouting ,addi‐tional support of the roof ,floor reinforcement and other measures .After the repair and reinforcement construction conducted ,the mine roadway was stable and the surrounding rock deformation was well controlled with the expected effect.
