旋挖钻进工艺在青藏铁路施工中的应用

旋挖钻进工艺在青藏铁路施工中遇到一些复杂地层，给施工带来一定的难度，为了解决这些难题，在原有的钻进工艺基础上采取了一些措施，以完善该工艺。介绍了不同钻头在青藏铁路施工中的应用情况，并对优化钻头结构，解决钻进效率低、孔斜问题提出了建议。     

热压法双式烧结工艺初探

在分析了传统的金刚石钻头热压法烧结工艺的基础上，提出了金刚石钻头热压法双式烧结工艺，并对其进行了可行性论证。采用此工艺制造的金刚石钻头经实钻应用后，钻头的性能指标满足钻探生产要求。本工艺成倍地提高了制造金刚石钻头的生产效率，大幅度降低了能源消耗。     

煤系高岭岩制取氯化铝和水玻璃实验

本文讨论煤系高岭岩综合制取氯化铝和水玻璃的工艺路线及工艺条件，采用适当的酸浸工艺可使高岭岩的铝浸出率提高到接近100%，使酸渣中的SiO2含量提高到95%左右，其他杂质含量大大降低，为活性硅渣的利用提供保证，采用湿法工艺，加入适当助剂，可在缓和的反应条件下，使硅的转化率达到95%以上，制得合格的水玻璃产品。     

泥炭综合加工工艺研究与利用

在实验的基础上，本文讨论了5种泥炭中抽提腐植酸的工艺流程。在研究分析关键抽提工艺原料粒度、反应时间、碱液浓度和酸浓度因素的同时，提出了抽提工艺的合理数值范围，以获得高的抽提率。     

隧道支护新技术——水平旋喷成拱法

介绍了水平旋喷成拱工艺，分析了工艺参数对旋喷的影响，并采用该方法在鞍子河电站成功地进行了工程施工，为软弱地层隧道预衬砌提供了一个新途径。     

FN-1井复杂条件下深井侧钻技术分析

以塔里木油田FN－1探井为例，阐述深井复杂地层侧钻的2种工艺方法，即初级分支钻进和高级分支定向钻进，分析对比2种工艺方法的优缺点，提出在易发生压差卡钻的情况下进行侧钻的合理工艺。     

北京地区地热井钻探工艺发展

20世纪70年代初期以来，北京地区地热资源勘探开发日益发展，应用了泥浆正循环、气举反循环、高压喷射、泡沫增压等钻探工艺，地热井钻探工艺不断完善和多样化。论述了北京地区地热井钻探工艺的发展情况，并提出了北京地区地热井钻探工艺方法选择的建议。     

云南剑川大庆铜矿床地质和工艺矿物学特征及其选矿工艺探索研究

本文在研究大庆铜矿床地质和工艺矿物学特征的基础上，对矿石进行了选矿工艺探索研究。通过三种选矿工艺的对比，表明选择性碎磨－浮选法是一种经济合理的，可获得高精矿品位和高回收率的最佳方法。     

钻孔压浆桩在齐齐哈尔地区应用前景及有关问题探讨

通过多年的施工实践，结合钻孔压浆法成桩工艺的特点及在齐齐哈尔地区地层条件中的应用，阐明了该工艺的优越性及广阔的应用前景。     

复杂地层双介质循环系统钻进工艺理论探讨

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。     

Cause-Effect Models of Large Landslides

Within the scope of the International Decade ofNatural Disaster Reduction (IDNDR), cause-effectmodels of large landslides are being developed toestimate hazard. This work is based on a structuralexploration of the landslide areas mainly by seismicmethods. Information about the status of deformationis obtained by comparison of the actual topographywith a reconstruction of the original topography, byGPS, and by SAR interferometry. Geologic andgeomorphological evidence, as well as relevantinformation from other geo-scientific disciplines, isconsidered. The Finite Element Method is used to modelthe initial phase of a mass movement. Later on thismodeling will be extended to the quasi-stationarycreep phase and the transition from creeping to rapidsliding.Four large landslides within the crystalline rocks ofthe Eastern Alps have been investigated since 1997.Two of them are evaluated so far, and are presented inthis paper. The largest one is the Köfelslandslide with a total volume of 3.9 km³ and apotential energy release of 5 × 10¹⁶ Joule.Refraction and reflection multi-component seismictechniques were used to resolve structure and elasticparameters of the landslide masses. For the modelingof the initial phase of the landslides by the FiniteElement Method a strain softening behavior of the rockmass has been assumed. The development of softened orfractured zones was successfully simulated, inagreement with the structures obtained by the seismicmeasurements.     

超大口径钻孔施工技术

介绍了超大口径钻孔的应用领域及工程特点,阐述了不同施工方法的优缺点,通过案例分析系统地论证了多种钻进工法的设备配置、工艺流程以及关键过程的控制措施,总结了施工过程工艺和操作中应注意的一些问题。     

非开挖顶管铺设大直径管道施工实践

介绍了非开挖顶管铺设大直径管道的施工工艺，分析了顶管施工的力学问题，为安装管道和选择顶管设备提供了必要的理论依据。     

大直径钻井在地下工程中的应用与研究

介绍了大直径钻井、反井钻井在国内外的应用和发展概况。论述了大直径钻井工程与石油钻井的不同特点。简述了大直径钻井需要研究的理论和理论和技术问题，并对应用前景作了评价。     

Large deformation elastic electro-osmosis consolidation of clays

This paper presents the theoretical background of an elastic electro-osmosis consolidation model for saturated soils experiencing large strains, which considers volumetric strains induced by changes in both the hydraulic and electric driven pore water flows. Three fully coupled governing equations, considering the soil mechanical behaviour, pore water transport and electrical field, and their numerical implementation within an updated Lagrangian finite element formulation, are presented. The proposed model is first verified against a classical one-dimensional analytical solution for electro-osmosis consolidation to demonstrate its accuracy and efficiency. Then, various numerical examples are investigated to study the deformation characteristics and time dependent evolution of excess pore pressure. Finally, the importance of considering large strains in a consistent and proper way is demonstrated, and differences compared to models based on small strain theory are highlighted.     

Geological Indicators of Large Tsunami in Australia

Tsunami waves can produce four general categories of depositional and erosional signatures that differentiate them from storm waves. Combinations of items from these categories uniquely define the impact of palaeo-tsunami on the coastal landscape. The largest palaeo-tsunami waves in Australia swept sediment across the continental shelf and obtained flow depths of 15–20 m at the coastline with velocities in excess of 10 m ^-1. In New South Wales, along the cliffs of Jervis Bay, waves reachedelevations of more than 80 m above sea-level with evidence of flow depths in excess of 10 m. These waves swept 10 km inland over the Shoalhaven delta. In northern Queensland, boulders more than 6 m in diameter and weighing 286 tonnes were tossed alongshore above cyclone storm wave limits inside the Great Barrier Reef. In Western Australia waves overrode and breached 60 m high hills up to 5 km inland. Shell debris and cobbles can be found within deposits mapped as dunes, 30 km inland. The array of signatures provide directional information about the origin of the tsunami and, when combined with radiocarbon dating, indicate thatat least one and maybe two catastrophic events have occurred during the last 1000 years along these three coasts. Only the West Australian coast hashistorically been affected by notable tsunami with maximum run-up elevations of 4–6 m. Palaeo-tsunami have been an order of magnitude greater than this. These palaeo-tsunami are produced most likely by large submarine slides on the continental slope or the impactof meteorites with the adjacent ocean.     

大口径钻头与钻具的研究开发

大口径钻头与钻具是钻孔灌注桩钻进的关键工具，勘探所钻头中心研制开发出有循环和无循环2大种类，10个系列，100多种规格各种钻头，为全国施工单位提供了可靠的钻头与钻具，解决了众多施工难题，取得了较好的经济效益和社会效益。     

大型缓倾煤矿采空区稳定性评价研究

煤矿采空区稳定性的影响因素众多,为了更好地解决大型缓倾煤矿采空区稳定性评价问题,通过FLAC 3D有限差分软件对采空区的多种开采工况进行数值模拟,提出了影响该类采空区稳定性的主要因素,并在此基础上采用层次分析法(AHP)进一步确定各影响因素的权重。针对山西中阳县多家煤矿采空区稳定性问题,根据影响因素综合评分表对各个影响因素进行评分赋值,最终计算得到采空区稳定性总得分,由此综合判定采空区稳定性等级。这种稳定性评价方法得出的结果与采空区地表位移变形观测法评价得出的结果相符,研究成果对类似采空区稳定性评价具有重要的借鉴参考意义。     

边坡变形破坏过程的大变形有限元分析

在用有限元法分析边坡稳定性时,引入计算大变形问题的更新的拉格朗日方法,推导了边坡大变形弹塑性有限元分析的方程式。采用边坡某一幅值的等效塑性剪应变区,从坡脚到坡顶贯通前的折减系数作为边坡安全系数。在此基础上,采用弹塑性大变形有限元分析软件计算了均质土坡不同坡角的安全系数,将其与小变形分析的结果进行了对比分析,结果表明：用弹塑性大变形有限元分析边坡失稳破坏的过程中,既考虑了岩土材料的非线性,又考虑了边坡的几何非线性,使计算结果更趋合理。并结合东深供水改造工程BIII2边坡进行了大变形有限元分析,计算结果与勘查到的实际边坡的滑动面分布位置比较接近。研究表明：该方法尤其适宜于软土类边坡或基坑的稳定性分析。