Abstract:Through the study of grading analysis and compacting test, this article analyzes the physical and mechanical property and the compacting capability of silt. As a result, it is one of the important reasons for the highway damage that the criterion of compaction in existence is deficient. In order to solve this problem, volume ratio of air is used as an assistant criterion for the compaction of silt. And, it is suggested that the degree of compaction for the road embankment should be improved.

Abstract:Ram-compaction pile can tamp bearing soil layers to densify the stratum in water. The bearing capacity of composite foundation can be greatly increased and engineering investment can be reduced by use of compressibility of flyash cushion and high bearing capacity of ram-compaction pile. The composite foundation, made up of ram-compaction rigid piles and fly-ash cushion, is introduced with the application of a high-rise building in Luoyang, Henan.

Abstract:Because of the characteristics of damping collapse loess under dead weight,by the comparative analysis on pile construction design in Construction Standards of Damping Collapse Loess Area(GB 50025-2004)and Technical Regula- tion of Construction Pile Foundation(JGJ 94-94),Based on analytical calculation on the field case and according to nega- tive friction mechanism-nutral point theory,it is expounded that for pile construction design in damping collapse loess un- der dead weight,neutral point should be taken into consideration and negative friction not be substitute in total.

Abstract:根据深圳市闹市区某地下停车场基坑支护工程，介绍在复杂周边环境条件下，基坑工程设计在分析基坑各段环境条件与支护要求的特点的基础上，采取不同的有效支护结构，取得了良好的技术与经济效果。

Abstract:通过具体工程实例，介绍了水泥深层搅拌桩在软基处理设计中如何有效地选用设计参数和利用岩土勘察资料进行设计；阐述了施工中主要施工工艺流程以及有效控制水泥深层搅拌桩成桩质量的措施。

Abstract:青岛流亭机场国际航站楼及楼前区地下停车场基坑支护工程采用高压旋喷止水帷幕、自然放坡、重力式土挡墙和钢筋混凝土排桩支护等综合支护手段，通过监测，基坑开挖后最大变形仅12．2mm，是基坑工程理论和实际相结合较成功的实例。介绍了该基坑支护工程的设计计算、施工工艺及监测方案。

Abstract:福建沿海地区地质条件复杂，施工难度大，大直径嵌岩冲（钻）孔灌注桩得到了普遍采用。通过施工中桩孔形态、嵌岩深度、孔底沉渣、桩身砼灌注等环节的质量控制，能够使大直径嵌岩冲（钻）孔灌注桩满足高层、超高层建（构）筑物基础需要。

Abstract:郑州东区软土基坑的支护型式较多，但采用预应力管桩作为支护体在郑州尚属首次。介绍了这种支护体的设计、施工与监测，提出在郑州东区5～6m软土基坑中采用预应力管桩作为支护体是可行的，在距离邻近建筑物较近时采用预应力管桩作支护体比采用传统的桩锚支护体具有明显的经济优势，具有节省工期、成本明显较低、不污染环境的优点。

Abstract:通过北京某多层建筑紧临深基坑条件下基坑支护工程的设计与施工，介绍了此工程环境条件下基坑支护工程的设计与施工实践。

Abstract:论述了旋挖钻进成孔工艺在黔东某电厂桩基工程中的选用、工程桩施工遇到的问题及采取的处理措施。

Abstract:武汉天兴洲公路铁路两用特大桥62号墩为长江水中墩，桥墩采用水上钻孔灌注桩。62—10号孔设计孔径2．5m，水深14m。施工至23m时发生卡钻事故，处理过程中造成护简底部揭穿。采用加接护简及千斤顶强力起拔等措施处理成功。介绍了事故的发生过程和处理措施。

Abstract:通过珠海平沙温泉道路工程深淤泥路基处理中监测技术及成果，论述了科学有效的监控数据在深淤泥公路软土路基处理中的指导作用。

Abstract:介绍了云南某病险水库大坝下游导滤体平台软土地基应用振冲碎石桩处理的施工技术以及质量控制措施。

Abstract:The problem of anchor cable drilling is most difficult in anchor cable construction. This article mainly introduces the processing method to deal with drill burying and core blockage through drill bit and drill pipes improving, inversing drilling, sidetrack drilling and conservative drilling. Some methods for improving the grouting is also introduced to solve the problem of fluid leaking and make the injecting of anchoring section more sufficiency.

Abstract:According to the actual working situation, this article made a transient dynamics analysis to rock drilling rod on ANSYS platform, and made comparison with the result data on different piston shapes. So in this case, theory basis for the design of percussive rock drilling system is provided.

Abstract:Manufacture and improvement on self-propelled direct and reverse circulation construction drill is introduced with the main technique parameter, specification and pilot

Abstract:升深2—17井是大庆油田第一口充气钻井。该井采用立管充氮气的钻井技术，在钻探过程中，通过对充气钻井工艺技术、配套设备的优选等进行研究，应用井底压力温度测试技术，在国内第一次实测出充气钻井井底压力温度变化情况，保证充气钻井的成功，有效地解决了该区块地层可钻性差、岩石硬度高以及低压低渗火山岩储层易受污染等问题，大幅度提高了深井钻井速度，保护了储层。该井钻进营城组火山岩储层2914m时点火成功，火焰高达10m，取得了较好的效果。介绍了充气钻井工艺技术和设备配套，以及升深2—17井的充气钻井实验过程和取得的效果。

Abstract:结合具体工程实例，介绍了煤层气参数井目的、技术要求、设备机具配套及施工工艺，总结了钻井工艺及技术经济效果。

Abstract:通过对罗布泊盐湖地区进行钻探施工工艺的探讨，结合施工中的实际特点，总结出较适用的钻探工艺方法。

Abstract:A PDC bit with new type tooth is introduced. Comparing with ordinary one, it turns low efficiency into very high and provides long service life in driliing in hard and compact mudstone.

Abstract:介绍了铁岭某地下工程空调机室塌方事故的处理技术。通过采取喷锚网、格栅拱、管棚联合支护技术，安全、顺利地完成了塌方处理。