Abstract:Being dead against the problems of high altitude, rugged topography, sophisticated geological conditions, severe natural conditions, remote geography location and inconvenient traffic in special sightseeing areas of west China, the researchers and engineers in our country developed, through several year efforts, a batch of drilling techniques suitable for special sight area, including air combined drilling technology, water well drilling technology with foam pressure increase, complicated formation sample drilling technology, hydraulic down hole hammer drilling technology, sampling rig and drilling techniques in special formations, environment drilling techniques, water save drilling technology, geological disaster control technology, memory multi-shot deviation measurement device, and so on. The work principles of above technology, research advancement and achievement were introduced briefly.

Abstract:This paper describes the remedial works adopted for soil collapsed during bored pile excavation for the advance contract for route 5 section between Shek Wai Kok & Chai Wan Kok in Hong Kong.

Abstract:The upper section of the foundation of one substation building, which is located on a dyke section of the south side of Yangtze River, contains a thick layer of slit. The static-press poles of precast steel reinforced concrete were adopted. All static-loading examinations on test piles met requests of design, but among the same examinations on engineering piles, there were only 50 percentage of piles the requests. The article analyses the engineering geological condition of the site at first, discusses in details on construction factors, squeezing-effect and time-effect of group-pile which affect static-load examinations on engineering piles; at last, based on the main causes, some corresponding measures are given to meet the design in the article.

Abstract:The anti-seepage curtain engineering for expansion of underground building of Wujiangdu generating set is situated at the place where Karst is well development, which reflects the complex engineering geology conditions. Furthermore, the geological structure mainly consists of deflected faultage within strata, accompanied with some matrue vertical obliquity faultages, intensively extruded rock strata, mature faultages, joints, and fragmentation, mature horizontal Karst and vertical Karst. This paper takes this engineering as an example to introduce the process of high-pressure-grouting, and elaborates some special problems in high-pressure-grouting and puts forward disposal methods.

Abstract:在钻孔灌注桩施工中，导管堵塞极易形成断桩事故，讨论了导管堵塞常用的处理方法及存在问题，介绍了因导管堵塞造成断桩后采用高标号水泥砂浆置换浮灌混合层，进行接桩处理所采取的有效措施。

Abstract:结合郑州地区水文地质及岩土工程条件，论述了深层搅拌桩与土钉墙支护方案及轻型井点和管井复合降水方案在郑州东郊河南省岩矿测试中心办公楼深基坑支护工程的应用，并探讨了设计施工中应注意的几个关键问题。

Abstract:结合广西凌云至百色二级公路GK44＋880～990滑坡工程地质勘察钻探施工，介绍了使用小型空压机进行空气泡沫钻进的方法和成功经验，为在干旱缺水和地质条件复杂的地方进行工程地质钻探提供了一种简便易行的新工艺。

Abstract:述天津国际商务中心深基坑土钉墙支护工程的施工方案设计、施工过程及边坡发生变形时对其的控制、监测，并进行成果分析。

Abstract:东海大桥5000 t级主墩钻孔灌注桩桩径2500 mm，孔深120.8 m。通过施工总结出在海上大口径深孔钻进中合理选用钻进设备、布置循环系统，及利用优质泥浆护壁是成孔的关键。

Abstract:阐述了锚索支护的优越性，针对锚索预应力易下降的情况,结合工程实践重点分析了应力降低损失的因素，提出了锚索预应力的补偿措施,以提高预应力锚索体系的综合锚固效果。

Abstract:在青岛近海、沿海边建造的很多工程都需进行抗浮设计。结合青岛水产实业活海鲜基地工程，简要介绍了岩石锚杆基础的施工工序、常见问题和对策等。

Abstract:钻孔灌注桩工程中，钢筋笼上浮的情况很常见，特别是混凝土搅拌质量不好时，极易发生钢筋笼上浮现象，介绍了一种钢筋笼定位器的结构、制作方法及使用效果。

Abstract:Trenchless technology expands rapidly in China. At present, the most popular trenchless pipeline installation method is guided boring, but in the guided boring cave-in of the borehole wall eternally are encountered in quicksand formation. Searching for solutions, the author has designed a Swallow-tail-back reaming bit, in addition grouting and mud protection are recommended before and during pipe installation in quicksand formation respectively.

Abstract:This article analyze the basic function of silica fume cement, foundation unsettlement be deal with silica fume cement grout, and engineering practical problems be solved.

Abstract:Geometry conditions of cuniform mass on rock slop was induced to logic function model. In analyses of the stability of rock slop, the rock slop was divided into several vertical strips. The less stable part of it was determined and its whole stability was analyzed through calculation of unstable value of each strip. This method was applied in analyses of one slop at Xiachuan Isle.

Abstract:The multifunctional hydraulic drill QK-100 was designed to meet the requirement of sampling in thick mulch area. The main technical parameter, performance specialty, main structure and test results of it was introduced.

Abstract:According to the energy-delivering model of the drilling steel in super-hard rock, This article adopts ANSYS three dimensions simulation finite element analysis(FEA) software and the methods of the dynamics harmonic analysis, has analyzed the stress state and deformation of the “Flying Dragon” series number ZQ25-2041 integral drilling steel when it bears percussive stress wave. This article has also indicated the dangerous work frequency and gave the theories base for estimating the fatigue life of the drilling steel rod in super-hard rock.

Abstract:After analyzing diversified forecast models for the rate of penetration, the ROP forecast method with BP arithmetic theory of improved artificial nerve nets was taken to calculate the ROP during drilling.

Abstract:The brief description is given to the study of the drilling fluids in oil-bit in Shanbei through the experiment. The PAM-GSP drilling fluid has been used in drilling and resulted in some perfect effects.

Abstract:通过对一次特殊的、有可能造成钻孔报废的孔内卡钻事故的分析处理、总结，认为遇到事故时要分析清楚，做到灵活主动，掌握处理事故的思路及技术方法，从中吸取经验教训，为避免及处理类似事故提供经验。

Abstract:Through the experiment of slice catalyst & powder catalyst in diamond synthesis, the superiority and disadvantage of two kinds of catalyst were contrasted in this paper, also the reasons of powder catalyst over slice catalyst were analyzed. The paper has practice meaning in diamond synthesis.

Abstract:我国早期修建的小断面水工隧洞目前存在较多病害，而对其处治难以形成规模生产，加上施工工作面狭窄，围岩地质情况复杂，病害处治极其困难。结合相关工程施工经验和体会，简单介绍了预应力注浆锚杆在病害隧洞处治施工中的应用。

Abstract:圆梁山隧道穿越毛坝向斜东西两翼及核部，根据隧道开挖揭示，大型、高压、富水充填型溶洞十分发育，水量大，水压高，突水、突泥、涌砂现象十分严重，施工难度极大。以圆梁山隧道2号粉细砂充填型溶洞注浆施工为例，介绍了在高压、富水、粉细砂充填型溶洞注浆施工中，注浆材料、注浆参数以及注浆工艺选择等方面应注意的问题。

Abstract:结合渝怀铁路武隆隧道进口瓦斯地段安全施工实例，介绍了隧道瓦斯地段的各种施工技术措施，保证了瓦斯隧道的施工和运营安全。