counter flush boring

Recently the Guangxi First Geological Engineering Construction Company introduces the percussive reverse drilling method, and has made a great breakthrough.

最近 ,广西第一地质工程地质施工公司引进了冲击反循环钻进方法用于滑坡治理工作 ,取得重大突破。

At the same time,we measured the durability,open and shut time of the backwashing three-way valve.

同时对反冲洗三向阀的耐久性、启闭时间和压力流量关系进行测试,首次提出了反冲洗时压降比率的概念和计算方法,为双罐全自动过滤器的研制和应用提供了技术资料和范例。

A mathematic model of reverse jet pulse cleaning system was established.

建立了高压陶瓷过滤器反向脉冲清洗的数学模型,得到了反向脉冲清洗的一维非稳态的压力分布解析解,进而得到了反向脉冲过程中的管内动态压力分布曲线,证实了负压区的存在。

APPLICATION OF BIG BORE REVERSE-CIRCULATION CORING CABLE DRILLING TO CAVERN OF LIMESTONE

大口径冲击反循环钻进方法在岩溶地层中的应用

Application of CJF Series Strike Backcycling Engineering Driller

CJF系列冲击反循环工程钻机的应用

The Development of CHF-20 Percussive-Rotary Reverse-circulation Drill;

CHF-20型冲击—回转反循环工程钻机的研制

Experiment and Analysis Study on Percussion Device of CHF-20 Percussion and Rotary Reverse Circulation Drilling Rig;

CHF-20型冲击-回转反循环工程钻机冲击机构试验及分析研究

Hole Clearing by air-lift reverse circulation method in bored piles

冲(钻)孔灌注桩气举反循环清孔工艺

Theoretical and Experimental Research on Reverse Circulation Constant Sampling and Powerful Compressed Air Spurting Drilling Technology;

反循环强力气体喷射钻进技术理论及试验研究

The Parameters Optimization of the Reverse Circulation DTH Hammer and Studies on Its Drilling Technique;

全孔反循环潜孔锤参数优化及其钻进工艺研究

The Application of Pump Reverse Circulation Drilling Technique in Dewater Construction

泵吸反循环钻进工艺在降水工程中的应用

Application of Air-lift Reverse Circulation Drilling in Baoli ZK3 Deep Geothermal Well of Guizhou

气举反循环钻进技术在地热深井施工中的应用

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 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

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

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

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

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 Airlift Reverse Circulation Drilling in Jingre 164~# Well of 3512 m Depth

气举反循环钻进工艺在3512m深的京热164号井中的应用

Principle and Application of Air-lift Reverse Circulation in Bored Pile

钻孔灌注桩气举反循环的原理与应用