Abstract:The bottom of basement of Super High-rise Buildings B5-4~7, which are the part of Guangzhou Taojinyuan, was located on completely weathering and strongly weathering powder sandstones. According to the results of soil press test, the shallow base which is on the top of natural or complex foundations was adopted in design. Because of putting experiment, design, work into a very closed link, as well as the method of work is trustworthy, it has been the succeed case of super high-rise building in Guangzhou City. The experiment conditions, design conceptions, project main points and application results were introduce.

Abstract:The deformation performance of support wall for foundation pits was analyzed based on the practice of a station on Shanghai Subway Line M8. It was found that the pit displacement can be reduced obviously during the excavation of pits by decreasing appropriate amount of excavation space and time every step and by shortening free exposure time of pit’s wall, making use of tau-effect laws. The goals of controlling pit deformation scientifically can be reached by using the laws of tau-effect while excavating the foundation pits and sufficiently stimulating the potential self control of deformation of soft soil.

Abstract:Treatment of waste mud from geotechnical engineering construction is an urgent problem for the civilization construction. In this article, the author has analyzed the influence of waste drilling fluid for the environment and the project condition, and discussed the treatment technology of the waste drilling fluid. In emphasis, the author introduced the accidence research of solidification of waste drilling fluid with blast furnace slag.

Abstract:The determination of extreme limit of anti-lifting bearing capacity is an important content for pile’s anti-lifting research. When the load of anti-lifting pile does not reach the disrupt load, the forecast of extreme limit of anti-lifting pile’s bearing capacity by function model of extrapolation is significant in both theory and practice, according to the known load-displacement data. The extreme limit of anti-lifting bearing capacity was successfully forecasted out by hyperbola model, exponent model and power function model, using the imitation functions of curves of Grapher 4 and taking project cases as a base. The comparison of the results of three function models shown that the exponent model has higher forecast precision.

Abstract:通过工程实例介绍注浆技术处理冲(钻)孔灌注桩桩身缺陷的工艺流程、工艺设备、操作方法及施工质量控制要点，并对注浆处理的机理、工艺参数进行了初步探讨。

Abstract:The paper introduces the reinforcement mechanism of limit state of bearing capacity applied by bored piles’ side and end surface in posterior grouting. The paper also expounds the effect of bored pile’s posterior grouting with a case study. Finally, the author gives some suggestions for bored pile’s limit state of bearing capacity in posterior grouting according to the author’s hands-on.

Abstract:结合国家现行勘察与设计规范，分析了岩土工程勘察与设计工作中若干易出现的问题，并提出了一些解决问题的个人看法。

Abstract:介绍了应用劈裂灌浆加固游泳池地基和化学灌浆处理游泳池混凝土池壁裂缝的施工技术方法。

Abstract:It has been written in case residential building slopes occasionally, we can change and reinforce its groundsill by static loading piles, rectfy the deviation over raising. This method has been justified by project instance, and the result is so far so good. Some issues during building progress over this method have been mentioned as well.

Abstract:镇江电厂三期船码头工程包括钢管桩264根、砼预制方桩122根、钢护筒嵌岩桩167根，其中的嵌岩桩为水上钻孔桩，且数量多、嵌岩深度大、岩石硬度高，通过采取有效技术措施，顺利完成任务。重点介绍了钻孔嵌岩桩的施工工艺，并总结了几点施工体会。

Abstract:苏通长江公路大桥主墩基础为131根φ2.80/2.50 m的变截面钻孔灌注桩组成的巨型群桩基础，桩长132 m，属于超大、超深桩基。介绍了施工中涉及到的几个问题以及所采取的技术措施。

Abstract:在深水湖区施工桥梁基础桩、柱难度非常大，采用浮动式平台并架设门式起重吊机，配套采用可调拉锚系统，取代固定式平台进行钻孔桩、钢管砼柱的作业施工，大大降低了钢材的使用量和辅助工作时间，采用有效技术措施控制柱、桩的垂直度，采用YCJF-25型冲击反循环钻机清水钻进成孔方法，满足了环保及大口径基岩成孔要求。

Abstract:通过对基坑降水工程实例的现象及成因分析，提出弱透水层滞后疏干现象，并提出了在降水工程中合理应用的建议。

Abstract:介绍了复合式预应力锚索墙的施工程序、施工要点及在赣龙铁路陡边坡中的加固效果。

Abstract:A kind of steal body PDC repair technique was introduced. At first, confirm if the steal body PDC bit which has been already used can be repaired. Then, after pretreated to the bit that qualified to repair, heating it at the speed of 8~10 ℃/min, while heating to about 620 ℃, the solder flux which welded the cutters begins to melt, then take down the PDC cuts, put them to 600 ℃ solder flux to keep warm for use. At last, utilize surface hard facing technique to repair the bit. The on-the-spot test proved that there is no obvious difference on the bit quality between the bits after repair and the new one. For example, repairing a piece of 12(1/4) in steel body bit can economize the cost at least 41400 Yuan RMB. Economic benefits are obvious.

Abstract:The article introduced research and development of φ420mm helix drilling rod of sealed bullet connection, including the design, manufacture and the part of application.

Abstract:New aerated foam drilling fluid, using a special plant fiber named KWS as fluid material, not only has the characteristics of low density, high ability of removing cuttings and lower use of water, but also has the perforation of rejecting of the Na+’s and Ca2+’s affection. By application of this drilling fluid, drilling engineers dealt with the leakage problems successfully in Xinjiang and it has a bloom application in west part of China where is short of water.

Abstract:A new technology of filling in and sealing against leak with expandable materials is introduced, which is economical， efficient and safe.

Abstract:结合为某煤矿施工煤炭地下气化钻孔工程实践，对煤炭地下气化钻孔的施工方法与程序进行了探讨。

Abstract:总结了气体钻井的优缺点，结合大庆地质特点以及钻井技术状况对在大庆外围深层实施气体钻井的地质条件、钻井条件、技术条件和经济条件的可行性进行了分析。分析结果表明，在大庆外围具备进行气体钻井的条件，利用气体钻井来提高大庆外围深层的钻井速度是完全可行的，并有利于发现和保护储层。

Abstract:Combining monitoring measurement system technology using at west-northern duct Guanghualu station in metro of Beijing, how to control and instruct construction through monitoring surface settlement and arch crown settlement was introduced in the metro construction.