Abstract:The gray time-varying parameters model of unequal interval is built to avoid the faults of classical gray model, following the information handling principle of the gray theory and leading a forgetting factor into the model to correct the prediction results. In the model, both time-varying property and the correcting effect of the forgetting factor are considered, so the prediction error is smaller. The case study shows that the error of finishing settlement can be controlled within 23% by the Gray TVP Model. As a result, the error checking indicates the precision grade is updated after prediction results is corrected by the forgetting factor.

Abstract:This text introduces the mechanism of shoring transfiguration of deep foundation pit， then, collects and settles the survey result of an engineering example. Some shortcoming is founded in the current design of shoring system. At last, some new calculation methods of ambient stratum displacement are discussed.

Abstract:This paper calculates the consolidation degree by using the theory of three-dimensional consolidation and taking account of the monitoring test results of pore pressure dissipation. It is proved that they are practical by contrasting with each other. In addition, according to equation of calculating consolidation degree, it can calculate ultimate settlement and predict the time when settlement is stable by contrary. It has important leading purpose to put forward the time of unloading.

Abstract:How to determine the length of power-injected pile is a important problem in practical project. Considering the complex special distribution of soft earth stratums in fact, the length of pile by prospecting will be unsatisfied to the requirement of improvement. The author participated in a project of improvement of soft ground by power-injected pile, put forward controlling the length of pile by the intensity of working current, put it in practice and succeeded considerable technical and economic benefits. The experimental data and conclusion from engineering project is valuable to similar projects.

Abstract:介绍了泵吸反循环钻孔扩底桩施工技术工艺特点及工程实例，并结合实践从设计、施工及检测等方面论述了应用体会。

Abstract:针对无锡财富广场的具体施工条件，通过对钻孔灌注桩、静压预应力高强度混凝土管桩两种桩型的施工技术条件及经济因素分析，得出了该工程应优先选用静压预应力高强度混凝土管桩的结论，并指出在静压管桩施工中需要做好挤土效应的预防工作。

Abstract:介绍了在振动沉管灌注桩施工硬粘土、砂、砂卵石等复杂地层中研制使用的几种取土器结构、取土工艺流程、取土(砂、砂卵石)原理，并对其进行了评价，还探讨了取土器取土(砂)对单桩承载力的影响问题。

Abstract:通过江苏某热电厂钻孔灌注桩工程试验桩检测情况，阐述钻孔灌注桩承载力随休止期变化规律及影响休止期的因素。

Abstract:结合工程实例，介绍了夹层、蜂窝、空洞、断桩等钻孔灌注桩质量事故发生的原因及处理方法。

Abstract:石粉垫层是一种高效经济的地基处理新方法，具有承载力高、压缩性低、施工工艺简单和检测方便等特点，目前已被广泛应用于工程实践。主要介绍了石粉垫层的材料性能、施工工艺和检测方法，并对其力学性质做了初步分析。

Abstract:以福宁高速公路秦屿段软基施工为例，对福建沿海高速公路软基特性和软基处理的方法进行论述，并提出了有关注意事项。

Abstract:为确定顶山水库除险加固工程水泥搅拌桩防渗墙处理的可行性，进行了搅拌桩防渗墙试验。通过试验监测、开挖检查、取样检验、压水试验、水泥土室内试验等方法对试验防渗效果进行了检验，达到了预期目的。

Abstract:Based on the construction practice and the theoretical analysis, the technique for auger-percussive-rotary drilling is defined. It is a new drilling method and is used generally in the anchor engineering of soil and rock. At last, the unresolved questions are suggested.

Abstract:The causes of the landslide which occurred in east side of Yutang Mountain located in Yongjia County of Wenzhou City were analyzed in detail. Various elements which affect the landslide were listed. The measure of combined water drain with anti-slide piles was taken. Some key points which should be paid attention in construction were introduced.

Abstract:High intensity rain and high water content in rock and soil are the main causes of massif body landslide. To better and efficiently forecast this kind of geological disasters, DZ-1 water content monitor system was developed. The working principle, main structure, technical specifications, monitor technique and application results were introduced.

Abstract:对DPP100-5型汽车钻机变速箱支架(地脚)断裂，滑动轨道悬臂刚度不足，下挠变形，造成小底盘变形，回转器向外倾斜等几种隐患性较大、且不好处理的故障特征及形成原因进行了详细的分析，介绍了相应的修理与加固方法。

Abstract:The failures of abrasion resistant ring on drilling pipes are common during drilling in Daniudi Area. After Analyses and research, it was thought that the main facts which affect drilling pipe abrasion resistant ring failure were abrasive property of formations, selection of high-abrasive material, and wielding technique.

Abstract:为建立和完善钻井液承包管理制度，保障钻井项目的顺利运行，结合塔里木油田钻井液闭合式管理运行实践，对这种管理方式进行了分析和探讨。

Abstract:介绍了煤矿井筒检查孔施工难点和技术措施,为类似项目提供借鉴。

Abstract:齐齐哈尔市泰来县境内一口水井填砾至126 m时发生了孔内坍塌事故，通过射孔的方法进行处理，挤入水泥，达到封堵、封有害含水层的目的。

Abstract:简要介绍了SM植物胶在松散破碎地层进行钻探生产的应用情况，与清水跟管钻进方法相比，可大大提高钻探效率，降低材料消耗，并确保工程质量。

Abstract:以渝怀线圆梁山隧道为例，从系统论的观点对长大隧道生产系统的合理性、相关性和各种量化指标进行分析，通过“科学计算分析—经验判断”的基本模式进行施工决策，从而形成长大隧道施工阶段比较合理的系统布置和设备配套方案。

Abstract:南京地铁一号线张府园～三山街区间隧道联络通道位于流砂地层，地下水丰富，开挖支护困难，因此采用冻结法施工。介绍了施工要点和需要注意的问题。实践证明，在流砂地层开挖隧道，使用冻结法是一个良好的选择。