摘要
从采面地质条件，超前预爆破处理坚硬顶板，支柱初撑力等方面对２７２２高档采煤工作面反复式切顶现象作了较详细的分析，并针对反复式切顶现象提出了预防措施。
A detailed analysis of the repetitive top-ping along the No,2722 high-grade coal mining plane was done from geological condition of mining plane,pre-treatment ofhard roof by pre-blasting in advance,and primary support of pillars.The pre-vention measures were put forward for the reptitivetopping.
出处
《西部探矿工程》
CAS
1995年第4期8-9,21,共3页
West-China Exploration Engineering
关键词
节理裂隙
切顶
超前预爆破
支柱撑力
煤矿
cleavage fissure topping pre-blasting in advance primary support of pillars
