The aim of using the hollow DTH reverse circulation sampling drilling technology in the Molybdenum minerals in Henan is to solve the questions existence in drilling, holing and sampling.
三道庄钼矿勘探生产中钻遇的地层非常复杂,采用其他方法均无法实现钻进,经过分析比较,决定采用贯通式潜孔锤反循环连续取心(样)钻进新技术来解决该地层钻进难、成孔难、取样难等三大问题。
Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling.
气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
Preparation of Al_2O_3 Catalytic Material with Run-through-macropore Network Structure
贯通孔道网络结构大孔Al_2O_3催化材料的制备
Design method of permeable and porous concrete reserved a quantitative through-pore
定量预留贯通孔隙透水混凝土设计方法研究
Microscopic mechanism of void coalescence under shock loading
冲击加载下孔洞贯通的微观机理研究
Coufucius said to his disciple, Zeng Zi,"My doctrine is an all-pervading principle."
孔子说：“参啊，我的道理是以一理贯通万事万物的。”
Researches on the Key Technologies of Hollow-Through DTH Used in Gas Drilling
气体钻井用贯通式潜孔锤关键技术研究
Numerical Simulation and Optimum Design of Piston in GQ89 DTH Hammer
GQ89型贯通式潜孔锤活塞仿真分析及优化设计
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
Statistics of Gravels from a Bore in Zhoulao Town,Jianghan Plain and Its Relationship with Cut-Through of the Yangtze Three Gorges,China
江汉平原周老镇钻孔砾石统计及其与长江三峡贯通的关系
Simulation on Whole Fluid Field of the DTH Hammer Reverse Circulation Coring and Sampling Technology;
贯通式潜孔锤反循环连续取心钻进完整流场CFD分析
Technology Research on Extending Core Length of Hollow DTH Reverse Circulation Continuous Coring Drilling;
贯通式潜孔锤反循环连续取心钻进提高岩心长度技术研究
Experimental and Drill Bit Flow Field Analyze of Run-through DTH Reverse Circulation Drilling Technique;
贯通式潜孔锤反循环钻进技术试验及钻头流场分析
Research on Coring Mechanism of Reverse Circulation Continuous Coring Drilling of Hollow DTH;
贯通式潜孔锤反循环连续取心钻进取心机理研究
A Brief Analysis of Confucian Theory of Politics--Concurrently Commenting on the Ethical Political Thoughts in Confucianism;
略谈孔子“论政”——兼论先秦儒家政治、伦理相贯通的伦理政治思想
Research of Application and Drilling Tool Optimization of Reverse Circulation Drilling Technique with Hollow-Through DTH Hammer
贯通式潜孔锤反循环钻进技术钻具优化及应用研究
Investigation of the Application of Hollow-through DTH Hammer Reverse Circulation Drilling Technique in Mineral Exploration
贯通式潜孔锤反循环钻进技术在矿区勘探中的应用研究
Application of hollow through type DTH hammer in exploration of underground mine goaf in opencast working
贯通式潜孔锤在露天矿山地下采空区探查中的应用
Six of the active toxin units integrate into the plasma membrane to form a hexagonal-shaped pore through the midgut cell.
六个活性毒素单元结合到原生质膜上形成一个贯通中肠细胞的底面为六边形孔洞
The Study of the Support Material with Though Pores Structure;
具有贯穿孔道结构的载体材料的研究