Abstract:In Huanghe Xiaolangdi water conservancy engineering,pneumatic downhole hammer and double driving head drilling machine were used to solve the problems coming up against with common pneumatic downhole hammer and conventional drilling technology while drilling in slag layer of 50m thickness.

Abstract:In view of the small water yield,analysis was made on technical measures of well completion.Piston,mixer and pumping were adopted to try to determine proper steps for well washing.On the premise of safety,water yield increased to the designed amount for tube well.

Abstract:介绍了空气反循环连续取样钻探技术及设备在黑龙江嫩江县争光矿区应用的情况、优点及经济技术效果等,并将国产反循环钻探技术同国外同种钻探技术及设备的综合效益进行了比较。

Abstract:针对河北大淑村煤矿扩勘项目的地层倾角大、钻孔易斜的特点,采用同心偏重钻铤防斜措施,取得了理想的防斜效果。

Abstract:通过工程实例,介绍了气动潜孔锤钻进技术在坚硬破碎、裂隙发育基岩地区水文水井钻探工艺,以及钻进中出现的问题及对策。

Abstract:北京YRG-1地热井由于后期技术套管井段"戴帽"固井失误,导致水泥浆下窜堵塞了热水储层的孔隙通道,造成地热井基本不再出水,后经应用射孔和酸化压裂技术洗井,地热井基本恢复了原来的产能,增产效果十分明显。结合工程实例,介绍了射孔和酸化压裂技术在地热井洗井中的应用。

Abstract:阐述了在大连金石滩地区复杂基岩地层中施工地热井造成井斜的原因。通过采用"满眼"钻具和"塔式"钻具相结合的钻具组合,并合理选择钻头,能够降低井斜,提高效率,降低成本。

Abstract:在湖南金竹山煤矿区钻探施工中,由于煤系地层属水敏性地层,孔壁易坍塌,发生了钻具扭断、埋钻事故,对事故处理过程进行了描述与总结。

Abstract:结合广西宾阳高田钨铜矿区钻探工程实例,分析了超径地层钻进经常发生断钻杆的原因,介绍了所采取的措施。

Abstract:云南大理洪积地层成井工艺复杂,技术难度大、要求高,科学合理的技术应用尤为关键。介绍了大理学院改扩建工程供水井成井工艺。

Abstract:According to the continuous increase of geological drilling job,and the demand for prospecting in deep zone,XD-3 all hydraulic top drive core drill was developed.The paper introduced the drill on structural design,operational principle,main features and its application.

Abstract:The construction of deepwater pile foundation is one of the important working procedures of bridge construction.It is necessary to build the fixed aquatic construction platform in order to construct the bored pile.So the construction platform must be scientifically designed and reasonably built,and it is very important to ensure the safety and stability of the platform in the whole course of building and working.Take the example of cast-in-place bored pile engineering for a large reservoir bridge,the mechanical behavior of the fixed aquatic construction platform braced by steel tube pile is analyzed with ANSYS software,the key technique is studied,and some conclusions are obtained that will be helpful to the similar engineering works.

Abstract:The functions of the driving mechanism directly affect drilling efficiency,borehole quality and other technological performances of the drilling machine.In this paper,different types of driving mechanism of JD15 hydraulic drilling machine are compared and analyzed.At last,the best design project,driving mechanism of the single hydraulic cylinder with long stroke,was determined.

Abstract:By the application of large diameter inclined steel-pipe pile with several bolts inside in Yangshan deepwater port of Shanghai,process flow of construction for inclined anchoring pile,control measures for construction quality,and treatment for in-hole accidents were introduced.

Abstract:Different treatment methods were adopted to match with different engineering structural components in coastal region,construction effects was presented with field case of maintenance and reinforcing for plank road along Tianheng Mountain in Penglai.

Abstract:天津某35 kV变电站开关室,地基不均匀沉降严重影响到开关室内电器设备的安全正常运行,经采用静力压桩托换原有地基加固补强控制地基稳定后,进行开关柜两侧的顶升纠偏设计和施工,开关柜倾斜变形恢复至稳定状况,达到了预期的加固处理效果。

Abstract:介绍了柳州市某职工住宅楼锤击灌注桩施工技术和施工过程中常见的桩身缩颈、夹泥砂、蜂窝和形成吊脚桩、单桩承载力不足等事故的处理方法。

Abstract:北京饭店二期改扩建工程基坑锚固施工采用桩锚联合支护,由于地质结构复杂,锚杆成孔难度大,施工工艺采用套管跟进作业法,引进YZX98型液动潜孔锤作为MDL-80B型钻机的前置动力,提高了工作效率。介绍了YZX98型液动潜孔锤的施工工艺和工作原理。

Abstract:桩端后压浆应在钻孔灌注桩成桩后3~7天进行。压浆量是影响后压浆质量和提高单桩承载力的关键因素。通过桩端后压浆,钻孔灌注桩单桩承载力特征值至少提高20%,可节约工程造价30%。

Abstract:介绍了桂柳高速公路K444+710~822上行线边坡锚固治理中锚索、锚杆、挂网等施工技术。

Abstract:Through the observation on fragments of PDC bit,comprehensive analysis was made on gas geological condition,drilling technology and pressure pumping value of mud pump,and requirements on design and application were put forward.

Abstract:According to the requirement of theoretical study and engineering practice,the data of temperature,stress,surface deformation and soil layers displacement are surveyed in situ during the artificial ground freezing of a tunneling engineering in Shanghai,and the data are analyzed and the regularity is studied.At last,several opinions and conclusion are given.

Abstract:In this paper,a 3D numerical model is calculated by nonlinear FEM analysis.The influence of different over-break conditions(different position,amount,depth etc) to the stability of surrounding rocks has been analyzed.The results showed the influence range of plastic zone and stress focus on the over-break position.Those are very important references in underground opening and initial support lining design.

Abstract:The urban shallow large-section underground structure has become important and difficult part of engineering because of the complexity of its structure and construction.How to apply monitoring technology to supervise the stress transition of surrounding rock,supporting and intermediate structures has become the critical step of the construction.The paper took the example of Dongzhimen Station project in Beijing Urban Rail Transportation,discussed and analyzed the monitoring technology and method in the deep excavation construction of shallow flat group cavities.Comparative analysis was made on monitoring results to verify the rationality of the construction method.

Abstract:论述了钻探施工企业设立安全生产控制考核指标的意义和思路;分析了钻探施工易发生事故的类型;提出了钻探施工企业安全指标体系;阐述了指标设立的原则;在分析安全指标体系科学、合理、可操作性的基础上,说明了其应用方法。