摘要
针对坚硬顶板条件下采煤工作面在初采期间往往形成大面积悬顶并致灾问题,介绍了传统浅孔爆破治理此类顶板的弊端,并指出其与深孔预裂爆破的区别,并从理论上探讨了深孔爆破预裂顶板时,被筒炸药冲击波对岩体的破坏过程,提出了坚硬顶板深孔爆破炮孔的合理参数确定办法,并进行工程实践。
For the large overhang and hazard problem at mining face during early mining period in hard roof, this article described the shortcomings of traditional shallow hole blasting, and pointed the distinction with deep hole cracking blasting. The paper discussed rock failure process in the explosive shock waves during deep hole blasting from theoretical aspects, and proposed determination of reasonable blasting parameters of hole blasting, and conducted engineering practice
出处
《煤矿安全》
CAS
北大核心
2014年第6期76-78,82,共4页
Safety in Coal Mines
基金
国家科技支撑计划资助项目(2012BAB12B02)
天地公司开采事业部创新基金资助项目(KCQNCX201201)
关键词
坚硬顶板
深孔爆破
炸药被筒
来压步距
炸药冲击波
hard roof
hole blasting
explosives tube
weighting step
explosive shock wave
