In addition, our experiments also indicate that the best depth of blast hole is close to shaft radius.
此外，试验还表明最佳的炮孔深度接近于井筒的半径。
May operate air-track, rotary, down-the-hole or other drilling machines to drill blast holes or may direct drilling of blast holes.
操作空气运作轨道，旋转，向下钻孔机或其他钻探机钻爆破洞或直接钻爆破洞。
The temperature gradient in blast hole was also measured and the temperature gradient was relative to the blast hole depth and its tem...
同时，还进行了炮孔孔内温度梯度的测量，它与炮孔深度及其温度有关。
The mechanic affection on the blast hole walls is simply analysed and cracking propagation caused by shaped charge is explained in this paper.
简单分析了聚能爆破装药在孔内爆破的力学效应，阐明了聚能爆破对岩石定向破裂的控制机理。
The temperature gradient in blast hole was also measured and the temperature gradient was relative to the blast hole depth and its temperature.
同时，还进行了炮孔孔内温度梯度的测量，它与炮孔深度及其温度有关。
This paper describes the theory, features and testing results of the air reverse circulation drilling process used in geo physical blast hole drilling.
概述了空气反循环钻进工艺应用于物探爆破孔施工的原理、特点及其试验应用情况。
The quantity of explosives and the blast-hole spacing are dependent upon the type and structure of the rock and the diameter and depth of the blast holes.
用药量和炮眼间距取决于岩石的范例和布局以及炮眼的直径和深度。
The paper introduces the rock blasting technology and 3 kinds of blast hole distribution suitable to different rock, and its remarkable application effect in practice.
文章介绍了针对不同矿岩条件进行的凿岩爆破工艺及3种典型布孔方法，并在实践中加以调整运用，取得了显著成效。
At present, in the design and construction of smooth blasting, considering few influence that main blast hole 'first blast damage to rock of smooth blasting parameters.
目前，在光面爆破设计与施工中，均未考虑主爆孔先爆造成光爆层岩石损伤对光面爆破参数的影响。
The optimum design method and basic principles of main reducer of rotary blast hole drill are discussed, The main reducer is taken as a whole and is optimized by discrete Complex method.
论述了牙轮钻机主机构减速器的优化设计方法和基本原理，以主机构减速器作为整体进行优化，采用离散复合形算法。
The results show that the blast hole diameter has little effect of the vibration level in production blasting, and the other factors should be considered in large scale delay blast design.
结果表明，除炮孔孔径在实际生产爆破中对振动影响不明显外，其它因素在大区微差爆破的设计中都值得注意。
This paper deals with the blasting parameters, working face blast hole patterns and the initiating system in the E-Bid section of the Furong Road Cable Tunnel Construction Project in Changsha.
介绍长沙市芙蓉路电缆隧道e标段掘进的爆破参数、工作面炮孔布置形式及起爆方式。
The blast tore a hole in the wall.
墙被炸开了个洞。
Michael regards a big hole in the building where Christina was, but we see inside that Downey's body shielded Christina from the blast. Her finger begins to twitch.
迈可望着建筑物里的那个大洞，克里斯蒂娜就在里面，丹尼的尸体在爆炸冲击时挡住了克里斯蒂娜，她的手指骤然一动。
The blast tore a six-metre (20ft) hole in the wall of the base, in the of the eastern province of Wardak.
这个基地位于东部的瓦达克省，基地的外墙炸出一个6米的大洞。
The test results show that the technology of vertical deep hole presplitting blast is a feasible method in Shi Rengou Iron Mine.
在石人沟铁矿的试验结果表明采用垂直深孔预裂爆破技术在该矿是一种可行方案。
V-shaped notch blasting is that cutting slots with certain depth along axis -direction of the hole is determined according to the blast-crazing, and then load uncoupled charge and detonation.
形刻槽爆破是指在炮孔孔壁上按爆破开裂方向，切出一定深度的轴向对称V形槽，采用不耦合装药结构进行的一种断裂控制爆破。
The problems and the solution of blast furnace tuyere in the casting are introduced. Measurements on lowering gasser and needle hole is analysed.
介绍了高炉风口在铸造中遇到的问题和解决方法，讨论了降低气孔、针孔的工艺措施。
At present, tap hole drills used in blast furnace are classified as pneumatic, electric and hydraulic.
目前，高炉开铁口机根据动力源可以分为气动、电动、液压三种类型。
To investigate the parameters of parallel cut blast without empty holes, an advanced numerical method is used to study the explosion effect of charge in hole perpendicular to a free surface.
为了考查无空孔直眼掏槽爆破参数，采用数值模拟方法研究单自由面垂直炮孔的爆炸作用问题。
Medium and deep hole casting blast sublevel open stoping method is suggested and its suitability to the stope ground pressure is expounded.
提出了中深孔抛掷爆破分段空场法，并阐明其对采场地压的适应性。
The process of recovery of refractories for ladle and the application of recovery material in blast furnace tap hole clay are introduced emphatically.
重点介绍对用后钢包浇注料的回收工艺及回收物料在高炉铁口炮泥中的应用。
The blast left a gaping hole in the front window and shattered a glass door, twisting and blackening its metal frame.
爆炸把前窗户炸了一个洞，玻璃门粉碎，金属框扭曲变黑。
The results indicate that the decay coefficient of the peak value of blast wave with the distance will be reduced as the hole depth (charge length) is increased.
计算表明，炮孔深度(装药长度)增大，爆炸应力波峰值随距离的衰减指数减小。
The single-hole casting blast experiment was conducted in lab. The formation process of blasting crater was observed and the casting velocity and its distribution rule was analyzed.
在实验室进行了单孔抛掷爆破试验，观测了台阶爆破漏斗形成过程，分析了抛掷速度及分布规律。
The way this burner system melts metal is simply by pushing the flame exit port up against the hole in the furnace which ordinarily would hold the propane burner (or air blast on a charcoal furnace).
这种燃烧器的方式系统的金属熔体的火焰推出境口岸打击在炉内的通常会举行一个木炭炉的丙烷燃烧器。
The traditional deep-hole blasting for tunnels USES pure clay to stem the blast-holes. The efficient energy availability of explosive is not high and the specific explosive consumption is large.
传统的隧道深孔爆破采用纯炮泥堵塞炮眼，炸药的有效能量利用率不高，炸药单耗量大。
People there will be showers in the blast waigaoqia free remembers, choosing the love of search a hole in, shut up and oppose the ignorance regarding the life;
人必有踬踣于疾风骤雨者，择苟安者寻一穴而居，闭塞而昧昧一生；
People there will be showers in the blast waigaoqia free remembers, choosing the love of search a hole in, shut up and oppose the ignorance regarding the life;
人必有踬踣于疾风骤雨者，择苟安者寻一穴而居，闭塞而昧昧一生；
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