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- rotary percussion drill 旋转冲唤钻机
- 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
- Diamond drilling replaced percussion drilling. 金钻探取代了冲击钻探。
- 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。
- UP-to-date high efficiency drill jumbo in operation 先进高效的凿岩台车在凿岩
- operating line for drill jumbo in roek roadway 岩巷钻车作业线
- The implementation of accurate boom location of drilling Jumbo at the driv-ing place is a key link to improve the drilling-blasting effects. 在掘进工作面上实现凿岩台车钻臂的准确定位是提高凿岩爆破效果的重要环节。
- percussion drill hole grouting pile 冲孔灌注桩
- rotary percussive drilling 回转冲魂进
- cylindrical shank percussion drill 圆柱柄冲击钻
- 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。
- rotary drill jumbo 旋转式钻车
- 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。
- Analysis of the hydraulic system of open-pit drill jumbo model KZL-120 KZL-120露天凿岩钻车液压系统分析
- 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。
