Abstract:Of the stability analyses of embankment reinforced by geo-synthetic material, the traditional Sweden slice method obviously owes its conservation to the misunderstanding of reinforcement mechanism of geo-synthetic material. Deep studies of the failure and reinforcement mechanism of geo-synthetic material show that the reinforcement effects of geo-synthetic material were considerably underestimated. Therefore, a new stability analysis method of embankment reinforced by geo-synthetic material, called modification of Sweden slice method, is presented by modifying the assumption of reinforcement effects. The in-situ case demonstrates the presented method is effective and practical.

Abstract:The effects of inflexibility and prestress of anchors on deformation of deep foundation pit supporting system with anchors and piles are discussed after analyzing the deformation mechanism and its effect factors of the supporting system. The reasonable determination methods of inflexibility of anchors and prestress for controlling the deformation of deep foundation pit supporting system with anchors and piles are set forth based on engineering cases.

Abstract:分析了承压水地层施工钻孔灌注桩时承压水地层类型及对钻孔灌注桩施工的危害，提出了预防和处理措施，并通过工程实例说明不注意承压水的危害所带来的后果。

Abstract:分析了公路桥头跳车产生的原因，进而从设计及施工方面提出了防治公路桥头跳车应采取的岩土工程方法及技术措施。

Abstract:广昌县自来水公司取水选用特大口径钢筋砼井，沉井外径1300 m，内径1200 m。阐述了其施工地层、富水性情况，井筒设计、施工制作、沉井新技术方法和所取得的技术成果。

Abstract:根据工程的场地地质情况，在采用锚喷网进行基坑支护中，将锚杆改为锚管，取得了较好的效果。同时介绍了锚管体的设计制作。

Abstract:通过实例讲述了Surfer自动化绘图功能的高级应用。通过对Surfer的编程，实现了静力触探试验曲线图的自动绘制，大大提高了工勘图件的绘制效率。

Abstract:通过若干工程实例数据，分析了水泥搅拌桩降低场地液化势的机理及置换率与处理效果之间的关系，并阐述了该处理方法在设计、施工、检测方面的一些问题。

Abstract:Because of all kinds of reasons, the existing software on DTH design can not meet user’s demands, new software needs to be developed. In this paper, the authors introduce mathematical model and theory used during software development in high confining pressure and normal pressure, demonstrate simply how to use the software, and sum up software features and its applications.

Abstract:On the basic of principle of drilling project, integrating the automatically control technology, computer technology, communication technology and electric and mechanical integration technology, the automatic drilling control system is finally developed out after several times of practices and improvements. The main theory of software for automatic drilling control by PC, the major functions, usages and application prospect of the system are introduced.

Abstract:The suitable structures of pincer body and jaw were designed based on the wall thickness and strength of broken forces, taking advantage of optimization design and equal strength theory. The flow rate and pressure needed by hydraulic system were calculated. The structure of working mechanism and performance parameters of hydraulic system were determined by computer simulation.

Abstract:Focusing on design of nozzle—the crucial element of boring hydraulic mining, the test data were analyzed and researched based on the experiments of small diameter nozzles. The nozzle design conception was brought forward. The patterns and types of nozzle were selected. Different alternatives for boring hydraulic mining were proposed on the characteristics of various formations. The rock broken mechanism and broken ability of water jet under the high pressure submerged down the hole were studied.

Abstract:在工程勘察施工中使用SH30-A型钻机,在钻进较为困难的情况下钢丝绳容易被突然拉断,冲击锤落入孔中,这种事故常发生在孔深10m以深。笔者根据勘察工作经验,提出一些打捞冲击锤的技巧。(1)吊钩的设计。为增大吊钩钩住卸扣的概率,应尽量减小吊钩的曲度。吊钩附近绑绳应尽量使2个绳卡的螺母朝一个方向。否则,由于吊钩附近钢丝绳的弯曲,吊钩的活动范围就会受到限制,甚至由于吊钩附近钢丝绳的弯曲,吊钩及其附近的钢丝绳会顶到钻孔的两壁上,造成打捞困难。吊钩的数量以2个为宜。一方面可以增大打捞成功的概率,另一方面,由于钻孔微小

Abstract:While measuring quasi-horizontal drilling holes, probe types and the ways to put them down the holes differ from those used in vertical drilling holes. The Deviation measurement technology used in quasi-horizontal holes at coal mines was introduced taking ZJS-1 Borehole Monitoring System and CQ-1A Single Shot Inclinometer as samples.

Abstract:In view of existing confusion about well washing technique with plunger in practices, the theoretical essences of this technique are conscientiously studied and analyzed. The causes of the confusion are pointed out. A relatively integrated theory system about this technique was put forward.

Abstract:三山岛蚀变岩型金矿地层复杂，钻孔施工难度大，试验采用PAA冲洗液，取得较好效果。介绍了冲洗液的配方、配制方法及应用效果。

Abstract:介绍和总结了某矿区ZK552钻孔在施工过程中发现的“输液瓶式”特大型“倒裂隙”的探索和治理过程。

Abstract:介绍了山东某矿区ZK1502孔透孔跑偏的过程及纠斜措施，分析了跑斜原因，提出了注意事项。

Abstract:以TH302井为例，分析了三维大斜度井的施工技术难点，论述了三维大斜度井施工中的井身剖面设计、井眼轨迹控制、摩阻与扭矩、井眼净化等问题，以及相应采取的技术措施。

Abstract:大16井在井深2000多米的地方2次发生断钻具事故，分析了断钻具的原因，并在此基础上提出了预防断钻具事故的措施。

Abstract:This paper presents four kinds of direction controllable trenchless techniques for pipeline installation. The principle of these techniques, including controllable impact moling, horizontal drilling with controllable pneumatic hammer, soil displacement pilot hole drilling technique and soil displacement micro-tunneling, is that the soils are displaced to the hole wall rather than removed to the ground surface during construction. In addition, the suitable conditions for each method are introduced.

Abstract:A new technological method, diamond drilling cutter, is adapted while designing diamond coring bits with diameter of 615 mm. The pattern of the cutters and the technique inserted them into and welded them with bit body are introduced. The good results of application of the technology were got in geological survey for determining the damsite of Guxian Hydro-junction over the Yellow River.

Abstract:在隧道建设中利用常规的安全监测来指导施工已是必不可少，而地质超前预报作为一种地质因素定性分析方法在地下洞室的建造中也愈来愈受到重视，但是两者在实际应用中往往相互脱节。鉴于此，结合相关的实际工程，阐述了多种安全监测手段在公路隧道建设中的综合应用，分析了隧道的“信息化”设计与施工所具有的重要指导意义。

Abstract:丘陵地带坑探经常采用竖井探矿的方法。介绍了在长期实践的基础上总结的一套适合断面小、深度浅、工作区分散的探矿小竖井施工技术及组织方法。