Abstract:Using the physical model of pile foundations developed by self, a series of simulation test were done. Through analyzing the condition of bearing capacity, it is thought that the roof can be predigested as a simple raise girder to calculate, but must multiply a proper coefficient, when the ratio of span height to breadth height is not too big. Through analyzing the settlement of roof, 3D settlement contour maps and surface displacement maps are drawn

Abstract:Based on a great deal of practical observation data, the article points out the primary factors causing the surface subsidence around the foundation pit. The estimate formula of surface subsidence around the foundation pit was given.

Abstract:介绍了云南楚雄至大理高速公路K2 2 6 +910～ 96 0段滑坡的防治设计与施工情况。结合工程特殊的地质情况和公路运营的安全因素 ,做出具有很强针对性的施工抢险方案 ,并付诸实施 ,最终保证了公路行车的安全和完成工程的完善治理。

Abstract:为解决安徽省歙县金马集团城东开发区桩基础施工的难题 ,设计改装了一套复合锤施工工艺 ,取得了较好的效果 ,并介绍了该区的地质情况、复合锤结构、施工中的注意事项。

Abstract:根据在天津地区施工跨海、跨河面的大口径钻孔灌注桩工程的实践经验 ,归纳并介绍了施工中遇到的质量问题和防治措施。

Abstract:大平煤矿施工的一眼水井 ,井深 2 5 2m ,成井口径 4 30mm。介绍了其成井工艺、施工中遇到的困难及采取的对策 ,最后阐述了施工中的一些认识和体会。

Abstract:叙述了淮南矿业集团张集煤矿 1号瓦斯抽排井施工的探索与实践。

Abstract:Surface hardening of drill rod joint material 30CrMnSiA by using 2 kW power and 100 mm/min scanning velocity has been performed. The microstructure and hardness of the transformation layer have been studied. The experimental results show that the surface hardened layer consists of the hardened region and the interim region and the temper microstructure. The microstructure of hardened layer was very tiny. Its hardness is 30% higher than the high frequency quenched. Quenched depth is 1 7 mm and one time higher than the high frequency quenched

Abstract:现有PDC钻头在中硬岩层中具有较好的钻进性能 ,但钻进软岩时存在钻头糊钻、效率低的问题 ,钻进较硬岩层时则存在钻头寿命短的问题 ,而大部分岩层属软、较硬岩石互层 ,因而制约了PDC钻头的大量推广应用。论述了扩大PDC钻头适应岩层范围的技术措施 ,并通过现场试验证明了技术措施的可行性。

Abstract:钢丝绳是旋挖钻机设备使用过程中的重要消耗材料 ,也是保证旋挖钻机设备安全生产的重要组成部件。从对钢丝绳的受力分析、优选等角度出发 ,阐述提高旋挖钻机钢丝绳的使用寿命及其在旋挖施工过程中保障设备安全生产、降低工程综合成本和提高设备利用率的重要性。

Abstract:In order to put forward technical research and exploitation for drilling hole hydraulic mining, the technological process, ejection mechanism, squirt gun design, lift up efficiency and security stabilization of it are synthetically analyzed, meanwhile many technical problems are reduced to five different outlines.

Abstract:Simulation method of directional drilling course was discussed under limited survey point data, and the reliability of simulation method was analyzed with cases.

Abstract:介绍了我国液动潜孔锤钻探技术研究和应用现状 ,分析了将其应用于石油钻井应解决的主要技术关键和设计时应注意的几个问题。

Abstract:在含丰富地下水的卵砾石层和基岩中施工 ,普遍缺乏高效可靠的施工工艺 ,针对基础施工中存在的问题 ,提出用高压气体驱动潜孔锤 ,用泥浆携带岩屑的双介质系统钻进工艺。介绍了该工艺的原理及特点 ,并通过国外进展情况和我国现有的技术储备探讨了该钻进工艺在我国研究应用的可行性。

Abstract:针对绳索取心钻进在砂岩铀矿钻探中应用的情况 ,作了技术分析 ,提出了改进方案。

Abstract:介绍了安全脱离法、收卡套取法、凸头脱卡法等金刚石绳索取心钻进烧结钻后打捞内管总成的方法 ,介绍了其原理特点及应用等。

Abstract:A new matrix well suitable to electroplating diamond bits was proposed. The composition of the plating solution was presented and the hardness and tenacity of the Ni Co Mn coating layer, as well as the Ni Co and Ni Mn coationg layers widely usede for diamond bits, were measured. The results show that Ni Co Mn coating layer has higher comprehensive performance and much lower cobalt content than Ni Co and Ni Mn layers. The Ni Co Mn alloy coating is more suitable to manufacturing the matrix of electroplated diamond bits than the Ni Co or Ni Mn alloy coatings.

Abstract:Matrix material of hot pressing diamond tools is a MMC made by Powder Metallurgy. This paper introduced the study outline of Programming Design on it.

Abstract:广州市汇景新城电力迁线跨广深线 ,利用H30 0型夯管锤铺设 70m长的 4 2 6mm钢管 ,介绍了施工过程中解决的技术难点和施工经验。

Abstract:21世纪大洋钻探计划是一顶国际科学钻探计划 ,基于日本和美国分别提供的 2艘深海钻探船的即将付之运作 ,该计划将于 2 0 0 3年 10月开始实施。美国提供的无隔水管钻探船 (就是执行ＯＤＰ计划的ＪＯＩＤＥＳＲｅｓｏｌｕｔｉｏｎ号钻探船 )将于 2 0 0 5年进行施工。装备隔水管的日本钻探船在 2 0 0 1年初即行建造 ,将于 2 0 0 6年开始进行其科学钻探活动。 2 1世纪ＩＯＤＰ大洋综合钻探计划进程初步方案见表 1。表 1　 2 1世纪ＩＯＤＰ大洋综合钻探计划进程初步方案21世纪IODP大洋

Abstract:This paper described the significance, goals, main contents ,organization and management of the project. Some progresses were introduced in the paper.

Abstract:列为南京市市政重点工程项目的南京市城北污水处理系统工程 ,其主体工程曝气沉淀池钻孔灌注桩桩基施工 ,具有工程地质条件十分复杂、桩数多、工期紧、要求高等特点。介绍了围绕业主、总包方确定的质量、安全、文明施工、工期等管理目标 ,有针对性地采取科学的全员、全过程目标管理措施 ,全方位建造精品工程的做法和经验。

Abstract:介绍了施工企业开展ISO 90 0 1:2 0 0 0质量管理体系认证工作中准备阶段 ,编制文件、建立质量管理体系阶段和质量管理体系运行阶段的具体实践过程。

Abstract:南京地铁一号线试验段工程盾构穿越内秦淮河存在诸多难点 ,其覆土仅 0 7m ,为目前国内外盾构隧道施工覆土最浅的隧道。根据地质和实际施工情况 ,采取建设性措施成功穿越了内秦淮河。

Abstract:The paper analyses the present status and main affecting factors of underwater rock blasting. Three parameters, water depth( H ), rock weathering degree and joint structure ( RQD ) and rock property ( f ) are thought to be the main factors that affect single usage of explosive. Linear relation formulas between single usage of explosive and three main factors are deduced.