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1)  form of snubber hole
掏槽型式
2)  cutting mode
掏槽方式
1.
According to the hard wall-rock characteristics of Zhangxin Coal Mine Xinfeng Shaft and its drillability and blastability, appropriate cutting mode is adopted.
针对张新矿新风井坚硬围岩特性,通过对其可钻性和可爆性分析,选取了合适的掏槽方式,积累了开挖坚硬闪长玢岩施工经验,取得了良好的爆破效果和经济效益。
3)  underholing style
掏槽形式
1.
How to ensure the existing tunnel s safety and the train normal running while the electric railway multiple line tunnel was blast boring? By study and practice,the paper gives an answer through stepped digging method,underholing style,holes scatter and the structure of the hole and detonation technology.
针对电气化铁路二线隧道爆破掘进如何确保既有线隧道的安全与行车正常运行的问题,文章介绍了分步开挖方法,从掏槽形式、炮眼分布、炮眼装药结构以及起爆技术等角度回答并很好地解决了这一问题,并在实践应用中取得了很好的技术效果与明显的社会效益与经济效益,为类似工程提供了成功经验。
4)  progressive spiral cutting
渐进式螺旋掏槽
1.
However, the progressive spiral cutting has merits of few drilling, smaller charging and better blasting effectiveness.
渐进式螺旋掏槽具有钻孔少、装药少、爆破效果好的优点,在分析渐进式螺旋掏槽原理基础上介绍了其在水布垭地下厂房中的应用实践。
5)  the horn post shape double entry cutting
角柱状复式掏槽
6)  cutting [英]['kʌtɪŋ]  [美]['kʌtɪŋ]
掏槽
1.
Combining the specific engineering practice,this paper discussed the theoretic and practical bases of reasonable lying of the cuttings hole toward characteristics of the big cross-section sap tunneling demolition,and calculated the reference quantity of explosive in single hole under condition of the mild-rigidity rocks.
文章结合具体工程实践 ,针对大断面坑道掘进爆破的特点 ,依据具体的工程要求 ,对深孔掏槽的布设参数作了探讨 ,提出了掏槽孔合理布设的理论和实践依据 ,并计算出了在中等硬度岩石中的参考单孔药量 ,对坑道掘进施工中的类似情况有一定的参考作用。
2.
By using the LS-DYNA 3D nonlinear dynamic finite element software,the elasticity calculation model was established to analyze the generation and transmission of stress under explosive charge in 4 typical cutting patterns,those used in shaft excavation by one-step blasting were optimized and compared by numerical simulation to select the optimizing cutting patterns.
对坚硬岩石条件下深孔一次爆破成井的九孔、双孔菱形、单螺旋和双螺旋4种掏槽方式,在炸药爆炸荷载作用下的应力产生和传播机理进行了计算机数值模拟。
3.
In this paper, the author combined the experience of tunnelling construction bystraight-in hole cutting blasting within 30 years in the country with the theory and practice in the blasting wor of Sweden, U.
该文系作者30年来在国内外隧道掘进施工中应用直眼掏槽爆破积累的经验,并在不断提高和改进过程中,大量汲取了瑞典、美国和加拿大等国家的理论与经验写成,对中等硬度及坚硬岩层隧道爆破掘进具有一定的理论和实用意义。
补充资料:55°圆锥管螺纹型式和尺寸
螺纹代号
基本尺寸
英 寸
大径
mm
d=D
螺距
mm
p
每英寸牙数
tpi
中径
mm
d2=D2
小径
外螺纹
d3
牙型高度
H1
圆弧尺寸
r
底孔尺寸
mm
R 1/161/16"7.7230.907287.1426.5610.5810.1256.4
R 1/81/8"9.7280.907289.1478.5660.5810.1258.4
R 1/41/4"13.1571.3371912.30111.4450.8560.18411.2
R 3/83/8"16.6621.3371915.80614.9500.8560.18414.75
R 1/21/2"20.9551.8141419.79318.6311.1620.24918.25
R 3/43/4"26.4411.8141425.27924.1171.1620.24923.75
R 11"33.2492.3091131.7730.2911.4790.31730
R 1 1/41 1/4"41.9102.3091140.43138.9521.4790.31738.5
R 1 1/21 1/2"47.8032.3091146.32444.8451.4790.31744.5
R 22"59.6142.3091158.13556.6561.4790.31756
R 2 1/22 1/2"75.1842.3091173.70572.2261.4790.31771
R 33"87.8842.3091186.40584.9261.4790.31785.5
R 44"113.0302.30911111.551110.0721.4790.317110.5
R 55"138.4302.30911136.951135.4721.4790.317136
R 66"163.8302.30911162.351160.8721.4790.317161.5
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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