你必须在岩石上打钻，而那些岩石比你通常在油田遇到的要硬得多。
You have to drill into rocks much harder than those you normally encounter in oil fields.
要做到这一点，你必须在岩石上打钻，而那些岩石比你通常在油田遇到的要硬的多。
To do that, you have to drill into rocks much harder than those you normally encounter in oil fields.
经过几年对锚杆钻机的跟踪研究，发现锚杆钻机在围岩作业中常遇到软岩中有硬岩夹层的现象，造成施工过程经常更换钻具的问题。
After several years to jumbolter research, the hard rocks always present in the soft ones in the wall rock procedure using jumbolter, which results in changing the boring tool during the procedure.
PD C钻头用于软到中硬的均质地层钻进具有钻速高、寿命长等特点，但不适合含砾石地层和软硬交错地层。
PDC bits have been used to drill the homogeneous formation from soft to medium-hard, but they are not suitable for drilling in gravel and multi-interbedded formation.
试验表明，该钻头是钻削工程陶瓷、宝石等硬脆材料的理想工具。
The result of experiment shows that the special diamond drill is a ideal tool for machining ceramics , gemstones, etc.
结论单孔或双孔钻颅血肿引流是治疗慢性硬膜下血肿的有效方法。
Conclusion Single-bore or double-bore drainage is effective in treating chronic subdural hematoma.
针对某含金矿地层蚀变强烈，岩矿层硬、碎、软硬不均、取心困难的特点，研制了ZJS系列钻具。
ZJS series of core barrels are developed to cope with strongly altered gold ore and body which is hard, brittle, of alternate hardness and difficult to core.
在油田气体钻井中使用KQC系列空气锤，解决了泥浆钻井在中硬以上地层中钻速慢、易井斜的难题。
KQC series of air hammers used in gas drilling can solve certain problems, such as lower ROP(Rate of Penetration) and well deviation, which occurred in mud drilling in above medium hard formation.
在硬岩中中隧道可采用凿岩台车钻眼，进行全断面开挖。
Tunnel in hard rock may be excavated in whole section by using chiseling rock trolley to drill small holes.
我国存在丰富的深层油气藏资源，勘探和开发所遇到的难题就是钻深井硬地层。
Our country is rich in depth oil and gas accumulation resources. It is difficult to drill the deep well and hard formation where the exploration and the development meets.
利用电镀超硬磨料刀具加工复合材料的“以磨代钻”工艺的提出，极大地提高了复合材料的加工质量和加工效率。
Using electroplating superabrasive tools, the process of "Drilling replaced by grinding" can notably improve the processing quality and efficiency of carbon fiber reinforced composites.
以广州地铁三号线盾构区间工程为实例，介绍盾构法隧道长距离硬岩地层段采用钻爆法开挖管片衬砌施工技术。
Taking the shield-driven tunnel works of line 3 of Guangzhou Metro as example, the article presents the shield construction technology taken for the long-distance hard rock ground, where the tunnel i…
用于中小规格冲击钻及旋转勘探钻具，凿进软岩层、中硬岩层。
For small rotary rock drill bits and rotary prospecting bits to cut soft, medium-hard rock.
以广州地铁三号线盾构区间工程为实例，介绍盾构法隧道长距离硬岩地层段采用钻爆法开挖管片衬砌施工技术。
Taking the shield-driven tunnel works of line 3 of Guangzhou Metro as example, the article presents the shield construction technology taken for the long-di…
以广州地铁三号线盾构区间工程为实例，介绍盾构法隧道长距离硬岩地层段采用钻爆法开挖管片衬砌施工技术。
Taking the shield-driven tunnel works of line 3 of Guangzhou Metro as example, the article presents the shield construction technology taken for the long-di…
应用推荐