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- sublevel long hole benching 分层台阶深孔开采
- long hole benching 深孔台阶式开采
- Long hole bench blasting 深孔台阶爆破
- The study shows that the shape of effective stress field of deep hole bench blasting is quasi ellipsoid and the tip effect appears at both ends. 采用三维有限元数值分析法,通过建立三维有限元计算模型,分析堵塞长度对堵塞区有效应力场的影响。
- 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。
- It takes some question,such as: long hole 、HTHP、solidity delay.Those instance and characteristic require cement slurry kept pumpability in a given time. 井段长、高温高压、延迟固井等情况和特点要求水泥浆在一定时期内保持可泵性。
- THE HIGH BENCH LONG HOLE MINING IN ANQING UNDERGROUND COPPER MINE 安庆铜矿高阶段大直径深孔采矿法实施方案
- The blasting effect of this project prove that long hole loose millisecond controlled blasting is a new technology extraordinarily suitable for rock excavation,and worth to be widely spread. 该工程的爆破效果有力地证明了深孔松动微差控制爆破技术是非常适合岩石开挖工程的一门新技术,值得推广。
- After a long rest on the bench we moseyed up to the museum. 我们在长凳上休息了许久之后便信步向博物馆走去。
- 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。
- Application of Spacing Technique in Long Hole Blasting of Openpit Bench 间隔技术在露天台阶深孔爆破中的应用
- 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。
- A long upholstered bench placed against or built into a wall. 软长椅靠墙放置或安在墙上的软型长凳
- How long will our food supplies hold out? 我们的储粮还能维持多久?
- Analysis of Selecting Spacing Factor for Front Row of Deep Hole Bench Blasting 深孔梯段爆破前排密集系数的选择分析
- It was a long trudge up the hill. 那段上山的路很难走。
- The enemy thought we wouldn't be able to hole out for long. 敌人以为我们会坚持不了多久的。
