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- shallow hole blasting 浅孔爆破
- 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。
- When I die, I plan to be place an nature in a shallow hole and become fertilizer for a dogwood tree. 我计划死后裸身埋在一个浅浅的坑里,变成一株山茱萸的肥料。
- 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。
- Practice shows that shallow hole shrinkage stoping method greatly decreased mining workload,lessened mining time,and increased mining efficiency. 实践证明,改进后大大减少了采切工程量,缩短了施工时间,提高了生产效率,为同类矿山提供了经验。
- A small mountain spring ran tinkling down the narrow stone crevices.Many years passed.An egg-sized shallow hole was washed out on the rock. 一股细细的山泉沿着窄窄的石缝叮叮咚咚往下流淌,也不知道过了多少年,竟然在岩石上冲刷出一个鸡蛋大小的浅坑。
- A ****all mountain spring ran tinkling down the narrow stone crevices.Many years passed.An egg-sized shallow hole was washed out on the rock. 一股细细的山泉沿着窄窄的石缝叮叮咚咚往下流淌,也不知道过了多少年,竟然在岩石上冲刷出一个鸡蛋大小的浅坑。
- 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。
- When a slot is cut in middle length hole post and stall method with hard ore,it is often used to cut raise or to cut raise and entry. However cutting raise often uses the method of shallow hole. 坚硬矿石内中深孔房柱法切割立槽的开掘,通常使用切割天井拉槽法或切割天井与切割平巷联合拉槽法。
- 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。
- 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 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。
- Punch 8 to 12 shallow holes into the tenderloin and stuff them with garlic and rosemary, sprinkle with salt and pepper. 在牛里脊肉刺上8至12个小孔,酿入蒜头及迷迭香,并洒上盐及胡椒。
- 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。
- By the analysis of forces, the design principle for indexable drills for shallow holes is put forward. 通过对力的分析,提出了可转位浅孔钻的设计原则。
- It is only shallow people who judge by appearances. 只有浅薄的人才会以貌取人。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- waterflooding in shallow hole at coal seam 煤层浅孔注水