3) forecast on roof fall and collapse
冒顶塌方预报
4) roof fall
塌顶
5) 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。
6) roof fall
冒顶
1.
Processing plan of collapse and roof fall of moving stove tunnel soft burying around rock section;
移炉隧道浅埋软弱围岩段塌方冒顶处理方案
2.
Analysis of stress arch action and preventing roof falling in laneway engineering;
巷道应力拱成拱及防冒顶技术分析
3.
The paper analyses the factor of coal mine roof fall by AHP and provides reliable theoretical basis for controlling the roof fall.
利用层次分析法对煤矿冒顶因素进行了分析,为控制冒顶事故提供了可靠的理论依据,对实现煤矿安全生产,提高经济效益和社会效益具有重要的现实意义。
补充资料：冒顶
①地下开采中，上部矿岩层自然塌落的现象。是由于开采后，原先平衡的矿山压力遭到破坏而造成的。采煤工作中有时有计划地放落上部煤层，也称为“冒顶”。②冒名顶替：哥哥冒顶弟弟应考。
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