摘要
兰花集团大阳煤矿3201回风顺槽掘进工作面在穿越陷落柱周边煤巷时,围岩软弱破碎,工作面发生漏顶和冒顶频繁,通过对工作面进行超前预注浆,提高了顶板的强度,保证了顶板的完整性,为工作面安全高效推进创造了条件,也为类似地质条件的巷道掘进提供了宝贵经验。
The 3201 excavation face of ence columm and meet frequent roof fall. strength of roof and insure safe and fast Dayang mine has to cross the soft-coal Advanced grouting technique has been excavation, which supply a reference to seam by subsidused to rise the similar work.
出处
《山西煤炭》
2008年第2期31-32,共2页
Shanxi Coal
关键词
预注浆加固
软煤巷道
advanced grouting
soft-coal drift
