Water well construction using directional circulation drilling technology in sandy gravel aquifer
砂砾含水中正循环钻进水井施工初探
Based on the status analysis on applicability of rotary drilling technique in home and abroad,through amount of engineering examples and spot practice,the author researched the applicability of rotary drilling technique and compared to normal & reverse circulation drilling.
在分析国内外旋挖钻进技术适应性研究现状的基础上,通过大量工程实例以及现场实践,以目前应用最多的正反循环钻进技术作为对比,初步研究了旋挖钻进技术的适用性,包括施工效率、施工质量、适用范围、施工成本等。
Water well construction using directional circulation drilling technology in sandy gravel aquifer
砂砾含水中正循环钻进水井施工初探
Introduction and Control of Constructing Cast-in-place Pile by Normal Circulation Method
正循环法钻孔灌注桩施工介绍及控制
This machine adopts two species of drillingtechnique of direct and reverse circulation, the efficiency enhances observably in the process of ovum, gravel and rock layer construction.
该机可采用正反循环两种钻进工艺，在卵、砾、岩层施工中，效率显著提高。
Construction Technology of Cast-in-situ Bored Pile Applying Positive Circulation Boring Machine and Process Quality Control;
正循环钻孔灌注桩施工工艺及其工序质量控制
Application of the Positive Cycle Mechanical Rotary Boring Grout Pile on the Pile Construction of the Pebble Bed
正循环机械回转钻孔灌注桩在卵石层中的应用
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
Heidegger's Thought on Hermeneutical Circle
不是从循环中脱身,而是正确地进入循环——海德格尔论解释学循环
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
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