1) prevent roof fall
预防冒顶
2) Stope roof collapse forecast
冒顶预报
4) prevention for caving casualty
冒顶灾害防治
5) forecast on roof fall and collapse
冒顶塌方预报
6) roof falling
冒顶
1.
The preventive measures of roof falling under ground production in coal mine;
煤矿井下生产中冒顶事故的预防措施
2.
Aimming at the roof falling accident in 2209 fully mechanized working face of Chensilou Coal Mine of Yongcheng Coal Industry Group,the authors have chosen the technology of injecting chemical reinforcing grout to strength the roof and ambient coal body.
针对永煤集团陈四楼煤矿2209综采工作面出现的冒顶事故,采用化学注浆加固技术对工作面冒落区及煤壁进行了注浆加固。
补充资料：不合格品预防措施(见预防措施)
不合格品预防措施(见预防措施)
preventive actions for nonconforming product: see preventive actions
buh6g6Pi阅YUfong cuoshi不合格品预防措施Co刊rorrni鳍p耐uet)(preventive actions fornon-见预防措施。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条