| 1. | Diamond drilling replaced percussion drilling .
金钻探取代了冲击钻探。 |
| 2. | Development and application of cz - 1200 percussion drill
1200型冲击钻机的开发与应用 |
| 3. | Hydraulic pressure percussion drill
液压冲击钻 |
| 4. | Discussed shallowly the karst area percussion drilling pile is digging in hole pile construction question processing artificially application
浅谈岩溶地区冲击钻孔桩在人工挖孔桩施工问题处理中的应用 |
| 5. | Guiding parts , mandrels , calibration rolls , knives , plate cutters , inserts for percussion drills , masonry drill tips , calibration bushes , drawing cheeks , shearing knives , inserts for golfer shoes
导向部分、心轴、校准轧辊、刀片、倒盘、冲击钻机的衬垫、钻机钻头、校准衬套、拉模夹具、剪刀、高尔夫鞋的衬垫。 |
| 6. | This laser poss characteristic : t he output power attains 500w ; laser energy instability less than 2 % ; laser radiation angle : about 3 . 5mrad . design a sort of new - style laser cutting head , using this equipment can carry out trepanning and percussion drilling processing
这台激光器所达到的参数为:输出功率达到500w ;激光能量不稳定度: < 2 % ;激光的发散角: 3 . 5mrad 。 |
| 7. | Abstract : the paper presented a kind of drilling hole method that adopted direct circulation and percussion drilling , casing and cliff - protection by mud . the method applied in the complex gravel layer which has the trend to emerge cave - in and drop from the drilling wall
文摘:介绍一种在砂卵石地层层厚复杂、孔壁易掉块、易坍塌的钻孔的成孔方法? ?正循环回转与冲击钻进、套管与泥浆护壁成孔。 |
| 8. | The stroke reverse circulation drilling machine of czf2000 - 1800 type is produced by our company newly to adapt to the demand of percussion drill market due to the development of road and bridge industry , it is specializedly used for pore forming of pebble and gravel stratum and hard stratum
1800型冲击反循环钻机是我公司最新研制生产的为适应我国路桥事业发展对冲击钻机市场的需求，专门用于卵砾石地层、坚硬地层中成孔的钻机。 |
| 9. | The results of the engineering practice showed that , in the geological conditions suitable for boring with traditional percussion drills , boring with percussion drills in conjunction with post grouting technique can effectively solve the problem of the large amount of dreg deposited at the bottom of the bore , thus reducing the settlement and improving the bearing capacity of the foundation piles
工程结果表明，在适宜选用传统冲击钻机成孔的地质条件下，采用后压浆技术与冲击钻机成孔相结合的施工方法能有效地解决孔底沉渣量过大的难题，减少沉降量，提高基桩承载力。 |
