Experimental study on the machining performance of the brazed diamond drill bits
钎焊金刚石取孔钻加工实验研究
There are not detailed specifications and regulations about verifying and evaluating core sample in base bore-hole sampling,so it is necessary to discuss the applicability,verification index and quality evaluation about bore-hole core sample verification.
有关路面基层钻孔取样后芯样的检验和评定方法,在现行规范中没有具体的说明和规定,故有必要对钻孔芯样检验方法的适用性、检验指标及质量评定进行探讨,以供同行参考。
The application of core-drilling method in quality inspection of pile;
如何用钻孔取芯法检测桩身质量
Through bearing plate test,core-drilling method,grout amount analysis and other methods grouting effect is evaluated.
对高填方桥台台背注浆加固的具体措施及施工技术进行了介绍,并通过承压板试验、钻孔取芯法以及注浆量分析法几种方法对注浆效果进行了评价,阐述了其质量保证措施及安全保证措施,对于改善桥头跳车及竣工后沉降量具有重要意义。
Verification Method and Quality Evaluation of Base Bore-hole Sampling
路面基层钻孔取样的检验方法与质量评价
Designed for wall drilling of concrete block or brick without using water.
在无水环境下，适用于混凝土或者砖块上钻孔取样。
boring method (of pulp sampling)
（纸浆取样）钻孔法
Application of Dry Drilling and Sampling in Landslip Prospecting
干钻成孔及取样在滑坡勘察中的应用
Simulation and Experimental Study on Down-the-Hole Drilling Fluid Field of the Hollow DTH Hammer Reverse Circulation Coring and Sampling Technology;
贯通式潜孔锤反循环取心（取样）钻进孔底流场模拟与实验研究
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
Development of core drill equipment for combined underwater drill rammer of rock built-in pile hole
嵌岩桩孔组合潜孔锤取心钻具的研制
To draw off(a liquid) by piercing a hole in a cask or other container.
钻孔汲取通过在桶或其它容器上钻孔来汲取（液体）
Selection of Core Drilling Method for WFSD-2 of Wenchuan Earthquake Scientific Drilling Project
汶川地震科学钻探二号孔取心钻进方法的选择
Research of Technology Problem with Pneumatic Downhole Hammer Core Drilling
气动潜孔锤取心钻进工艺问题的研究
CONSTRUCTION SCHEDULE ADVANCEMENT OF DRILLING PILE BY DEEP HOLE WATER PRESSURE BLASTING
采取深孔水压爆破提高钻孔桩施工进度
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。
tap(ping) drill
螺丝孔钻，螺丝底孔钻
The sorker was drilling.
此工人在用钻孔机钻孔。
The analysis of interval between long screw auger taking clay and static pressuring pile
长螺旋钻孔取土与静力压桩时间间隔的分析
Research on Deep Hole Wire Line Core drilling Tech.in Complicated Stratum
复杂地层中深孔绳索取心钻探技术研究
Construction Method of Coring for Pore Forming Based on Water Drilling of Super-diameter Rock Pile
超大直径岩石桩水钻取芯成孔的施工技术
Study and Application of High Wear-resistance Drilling Rod for Wire-line Coring in Medium-deep Inclined Hole
中深斜孔绳索取心高强耐磨钻杆的研究与应用