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- Blasthole deflection is an severe adverse factor when mining is carried out using large diameter long hole blasting . 在大直径深孔采矿中 ,炮孔偏斜是非常不利的因素。
- In this paper, designing and processing technique of a detonating cord of low initial capacity are presented. The detonating cord can satisfy the requirements for long hole blasting in mine. 介绍了一种低起爆能力导爆索的设计、性能及生产工艺。该产品克服了普通导爆索在露天爆破工程中的各种特殊环境和装药条件下的缺陷,能够满足矿山深孔爆破的要求。
- The new method adopted roof presupporting,deep and medium hole blasting,LHD ore removal and tailings filling. 该采矿方法采用采场预控顶技术，中深孔爆破，铲运机出矿，尾砂充填。
- A supermassive black hole blasting is destroying everything in its path with a deadly beam of energy. 超大规模黑洞爆发产生的致命能量束能摧毁一切。
- Long and medium hole blast fragmentation technique 中深孔落矿技术
- Linear charge blasting at the net of highway to Zhuhai aerodrome and the hole blasting at underground stope in Gaofen mining company have been design by the expressions. 按推导的计算式设计了珠海西区机场路垭口条形药包爆破和高峰矿业有限责任公司地下采场浅孔爆破。
- The influence factors of rock fracture weak face on cut hole blasting are analysed,suit-able hole distributing method based on fracture distribution is put foreward. 分析了岩体中裂隙弱面对掏槽孔爆破的影响因素，并根据裂隙的分布情况提出相应的布孔方法和原则，对岩巷掘进施工具有实际指导意义。
- The feasibility of middle_ deep hole blasting in roadway is discussed from present blasting apparatus, blasting technology and work way and the necessity of lifting excavation efficiency velocity and suitability. 从目前的爆破器材、破技术和作业方式等方面论述了平巷中深孔爆破的可行性,以及它对提高掘进工效、度,适应机械化作业线施工的必要性。
- Way to Reduce the Large Fragment Rate in Long Hole Blasting 降低中深孔爆破落矿大块率的途径
- Exploding technology about long hole blasting in rock roadway 岩巷中深孔爆破技术
- The paper analyse the mechanism of hole-bottom detonating and set forth the crushing mechanism of hole-bottom detonating in medium-length hole blasting decrease the production of big block ores. 分析了孔底起爆的作用机理，阐述了孔底起爆在上向扇形中深孔爆破中能降低大块产出的破碎机理；
- In order to improve the blasting and increase loading efficiencey as well as to decrease mining cost,it is important to study the optimization of pattern parameters in undergroud bore hole blasting. 地下矿山中深孔爆破孔网参数优化研究对于改善爆破效果、提高铲装效率、降低采矿成本至关重要。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- You can keep my book as long as you like. 我的书你要借多久都随你的便。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- The beggar spun a long yarn about his misfortunes. 那个乞丐编造了一大篇自己如何遭遇不幸的故事。
- Sprung Hole Blasting for Bursting Triangle Ore Body 利用药壶爆破法爆除残留三角矿体
- Improvement of medium-length hole blasting effect 中深孔爆破效果的改善
- How long will our food supplies hold out? 我们的储粮还能维持多久?
- deep and middle- deep hole blasting 中深孔爆破
