small diameter hole drilling

The main technical challenges present with large diameter rock socket drilling are analysed.

分析了大口径嵌岩钻进面临的主要技术难点，并对目前国内常用的３种大口径嵌岩钻进方法牙轮／滚刀钻进法、冲击钻进法（包括无循环和反循环）和气动／液动潜孔锤钻进法的技术现状作了介绍，提出了提高我国大口径嵌岩钻进技术水平的建议。

Application of Composite Pile with Caliber Bore-hole for Geological Disaster Treatment Engineering

小口径钻孔组合桩技术在地质灾害治理工程中的应用

Study on drill bit for large diameter core drilling of deep hole in hard rock

硬岩深孔大口径取芯钻进的钻头研究

Application Design of Small-diameter Steel Pipe Bearing Pile Construction Platform In the Construction of Bored Pile

小口径钢管支撑桩施工平台在钻孔灌注桩施工中的应用

Application of Wireless-while-drilling Technology on Large Diameter Directional Hole

无线随钻技术在大口径定向工程钻孔中的应用

high efficiency drilling system for small and deep hole

高效小直径深孔钻削系统

Analysis and treatment on pile bore checking collapse accidents of large diameter bored perfusion pile

大口径钻孔扩底灌注桩在孔形检测时的塌孔分析及处理

Study on Construction Platform Structure Design of Water Surface Large Diameter Bored Pile;

水上大口径钻孔灌注桩施工平台设计研究

Discussion on the Diameter of Main Section in Medium-shallow Hole in Diamond Core Drilling for Geological Exploration

地质勘探金刚石岩心钻探中浅孔主体口径探讨

Study on In-situ Rock Strength Measurement with Contact Detection Method in Small Borehole and Application;

小孔径钻孔触探法围岩强度测试原理研究及应用

Adaptive noise cancelling in small drilling hole detection

自适应串扰噪声消除技术在小孔径钻孔超声波检测中的应用

guide twist drill

有导径的深孔麻花钻

Technology of Big Caliber Boring Pouring Pile;

大口径钻孔灌注桩施工——土建类专业建筑施工新技术

The Research of Producing and Test of Jointing Intensity of Small Caliber PDC Bit;

小口径PDC钻头制造与焊接强度检测研究

THE COMPARISON BETWEEN SMALL-HOLE ROPE CORING AND COMMON CORING

小口径绳索取芯法与普通钻进取芯法比较

Application of Bit Water Way in HDD

水平定向钻进扩孔钻头水口应用分析

Processing Technical Study for Steam DrumTemperature-Measuring Seat Small Bore Deep Blind-Hole

汽包测温座小口径深盲孔的加工工艺研究

"Use a hole punch, not a torch nor a drill, and punch a hole in the enclosure for the size conduit being used."

采用打孔机,不要使用焊枪或电钻,在外壳上打出符合导管直径大小的孔。

Design and Application of large Diameter Bit in Rock and Soil Drilling

岩土钻探工程大口径钻头设计与应用