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- Based on certain mechanical quality of the rock, the analysis on the Polycrystalline Diamond Compacts (PDC) bit and the rotary percussive drilling is carried out. 在管棚支护所钻岩石的力学性质基础上,对管棚支护钻孔所采用PDC钻头和回转冲击的钻进方式进行了比较分析。
- APPLICATION OF ROTARY PERCUSSION DRILLING TECHNOLOGY IN REVERSE THRUST NAPPE STRUCTURE FORMATION 旋冲钻井技术在逆掩推覆体地层的应用
- Effects of Drilling Conditions on Crushing Rocks while Rotary Percussion Drilling 旋冲钻井参数对破岩效率的影响研究
- Keywords Rotary percussion drilling;Water-saving drilling;Droughty water scarce areas;Percussion device; 回转冲击钻进;节水钻探;干旱缺水地区;冲击器;
- Keywords reverse thrust nappe structure formation rotary percussion drilling DGSC hydraulic impacter application rate of penetration; 逆掩推覆体地层;旋冲钻井;液动冲击器;应用;钻速;
- rotary percussion drilling 旋转冲唤钻进,冲旋钻井
- rotary percussion drill 旋转冲唤钻机
- Diamond drilling replaced percussion drilling. 金钻探取代了冲击钻探。
- rotary percussive drilling 回转冲魂进
- The floor that stands by a floor in strong bottom digs a hole with percussion drill, knock nog, get on the traditional thread binding that play a base, secure with nail. 在强下部靠近地板的地板用冲击钻打一排孔，敲入木钉，把踢脚线装上，用钉子固定。
- However, the SEP in diamond rotary drilling was higher than the SEP in percussive drilling in lightly weathered hard as well as in extremely hard rock. 在微风化的坚硬与极坚硬岩石中，金刚石旋转钻进比功则明显高于冲击凿碎比功。
- The air foam clockwise circulating and percussion drilling technology was practiced in the Africa that lacks water.It also got over the problem to drill in the very hard and leakage water rock. 应用空气泡沫正循环、气动潜孔锤钻进技术,实现了在非洲大陆严重缺水地区施工,克服了对坚硬岩石和漏失层钻进困难的问题。
- Complete range of various capacities, suitable for professional use on portable and percussion drills. 拥有可涵盖各种夹持力之完整性，适用于可携式电钻之专业用途。
- percussion drilling cast-in-place pile 冲孔灌注桩
- percussion drill hole grouting pile 冲孔灌注桩
- cylindrical shank percussion drill 圆柱柄冲击钻
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- This paper explains and proves briefly that the incident wave differes from the percussive force in percussive drilling, and both are two different conceptions. 本文简要地论证和说明了冲击凿入系统中的入射波和凿入力(即冲击力)是两个不同的力。
- A similar board used as a percussion instrument. 敲击板用作打击乐器的一种类似的板
- This paper introduces the automatic drilling principle, the hardware composition and software program in the windlass percussive drilling by the microcomputer control system. 介绍了卷扬式冲击钻进过程中，微机控制实现自动钻进的基本原理、硬件的组成和软件的设计。
