predrilling

The programe of setting of steel casings with the mature and effective methods of advance drilling and throwing fills in the clay and the slabstone and the cement is taken.

50 m大直径钻孔灌注桩,由于存在深水、基岩倾斜、岩溶等因素,导致了复杂的成孔工艺,采用"钢护筒跟进"方案结合超前钻、抛填粘土、片石、水泥等较成熟且有效的方法进行施工,根据处理溶洞漏浆、塌孔、卡锤和埋锤的经验,总结了深水岩溶桩基的施工技术。

Application of prevention and Cure Technology of Gas with Advance Borehold in Quli Coal Mine

超前钻孔瓦期防治技术在渠里煤矿的应用

Testing Research of Laneway Wall Rock Stress Released by Advanced Bore Decompression Explosion Technique

超前钻孔卸压爆破技术释放巷道围岩应力试验研究

Application of TSP and Advanced Drilling Geological Prediction Technology in Construction of Qiyueshan Tunnel

TSP与超前钻探地质预报技术在齐岳山隧道施工中的应用

Rock drillability investigation for ultra-deep well drilling at thrust structure of Kuqa depression

库车坳陷山前构造超深井岩石可钻性研究

Injection of Marysan with Advanced Long Borehole in Soft Rock Stratum

在松软岩层中用超前长钻孔注射马丽散

Research on the System Design for Advance Geological Prediction in TBM Construction Tunnel Based on Drilling Machine;

基于钻机的TBM隧洞施工超前地质预报系统开发研究

Structural dynamic analysis on ultrasonic driller and drilling experiments

超声钻结构动力分析与钻削实验研究

One Huge Diamond That Even Beckham Can't Buy

宇宙中的"超级大钻石"

5.2 Slug the pipe with two cubic meters of mud before pulling out.

起钻前打进两方重泥浆。

A mole burrows its way through the ground.

鼹鼠会在地下钻洞前进。

ERW Drilling and Completion Technology in Ultra-Shallow Heavy Oil Reservoir with Conventional Vertical Rig

直井钻机钻超浅层稠油大位移水平井钻井完井技术

aBsorB Beforehand, store Beforehand and use Beforehand

超前引进，超前储备，超前使用

Construction Technology for the Ultra-large and Ultra-deep Cast-in-place Bored Pile Testing Pile of Jiashao Bridge

嘉绍大桥超大超深钻孔灌注桩试验桩施工技术

machine tool, ultrasonic, for working diamond or metal carbide

钻石或金属硬质合金片加工超声机床

Phacoemulsification with phaco-drill in scleral limbal corneal tunnel incision (SLiC Incision).

角膜缘隧道切口钻凿劈核超声乳化术

Advanced Drilling Technology of Micro-Via in PCB

印制电路板超细微钻孔先进加工技术

Research on the Bearing Performance of the Super-Long and Large-Diameter Bored Pile;

超长大直径钻孔灌注桩承载性能研究

Study on Vertical Structural Stability of a Super-deep Drilled Shaft in Slurry

泥浆中超深钻井井壁竖向稳定性分析