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- According to the exploration problems in an open-pit mine,a new drilling method using reverse circulation DTH hammer drill is put forward. 针对露天矿钻探施工中存在的问题,提出了利用贯通式反循环潜孔锤进行施工的新方法。
- Application of reverse circulation DTH hammer drill in anopen-pit mine exploration 贯通式反循环潜孔锤在某露天矿钻探工程中的应用
- reverse circulation DTH hammer 贯通式反循环潜孔锤
- 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。
- Barge was used in sea pile construction,and FGC-15D large diameterwet reverse circulation DTH was adopted for hole completion. 利用驳船进行海上基桩施工，采用FGC-15D型大直径湿式反循环潜孔锤钻进成孔，满足施工工艺和工期要求。
- Application of Combination of Air DTH Hammer and Air-lift Reverse Circulation in Hydrological Well Drilling 空气潜孔锤与气举反循环钻进组合工艺在水文水井钻探中的应用
- Keywords hollow DTH hammer;reverse circulation bit;dual drilling pipe;continuous sampling;benefit; 贯通式潜孔锤;反循环钻头;双壁钻杆;连续采样;效益;
- Experimental Research on Reverse Circulation Drilling with Through-type DTH Hammer for Water Well Drilling in Karst Strata 贯通式潜孔锤在岩溶地层反循环水文水井钻进试验研究
- Keywords the whole hole reverse circulation;hollow-through DTH hammer;emulational calculation;flow field analog analysis;analysis of stress and strain;the technique researched on drill; 全孔反循环;贯通式潜孔锤;仿真电算;流场仿真分析;应力应变分析;钻进试验研究;
- The piston is an important part of high air-pressure DTH hammer. 活塞是高风压潜孔冲击器中最重要的零件。
- It can direct design of large diameter DTH hammer and bit,improve application effect of DTH hammer. 钻压大小等，这一规律的发现使潜孔锤与钻头达到了合理的级配，提高了能量利用率，从而提高了潜孔锤使用效果。
- Development of QFGZ Type Bit for Simultaneous Casing While Reverse Circulation Drilling with DTH Air Hammer QFGZ型潜孔锤反循环跟管钻头的研制
- The results indicate that although the impact frequency of DTH hammer decreased somehow, the impact power increased. 结果冲击频率虽然有所下降,但其冲击功却有升高的趋势。
- With reference to the experiment results,the DTH hammer concentric simultaneous casing drilling tool is considered to have extensive applicati... 结合实验结果,认为潜孔锤同心跟管钻具在卵砾石地层中具有广阔的应用前景。
- The drill can be used in the drilling technologies of normal or reverse circulation in the quaternary period gravel or hand rock ground. 演练中，可用于钻井技术的正常或反循环在第四纪时期，砾石或手岩石地面。
- The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup. 型管柱中的生产堵塞器具有单流阀作用,可方便进行反循环洗井;同时,具有独特外泄压系统,使堵塞器打捞在压力平衡状态下进行,且密封可靠,保证所取资料的准确性。
- Transmission, built in the top drive power head, has two speed range? High and low. It can meet the requirements of both DTH hammer drilling and carbide bit drilling. 动力头设有变速装置,有高低两个档次,以满足潜孔锤钻进及硬质合金回转钻进方法。
- Researches indicate that the new type of DTH hammer without drilling machine can make DTH hammer achieve percussive and rotary drilling using air compressor. 借鉴凿岩机的转钎机构,利用活塞的回程能量带动钻头旋转。
- The paper introduced the use of airlifting reverse circulation rotary drilling techniques in practice of major diameter socket pile operation at Xiangfan city s Hanjiang No. 介绍了使用泥浆护壁气举反循环回转钻进工艺进行襄樊汉江四桥大口径嵌岩桩的施工实践。
- The paper introduced the structure and principle of DTH hammer drilling with concentric simultaneous casing, which used in seismic exploration drill in gravel. 摘要介绍了适合卵砾石地层地震勘探孔施工用的潜孔锤同心跟管钻具的结构和工作原理。
