三门峡水库泄洪排沙对库区工程影响的分析

为探讨泄洪排沙对三门峡库区工程造成的影响，本文依据库区历年汛末河势查勘报告和近年汛期工程春流及塌岸、塌滩观测资料进行分析论证，提出认识建议。     

Uplift Phenomenon: Model, Validation, and Design

Uplift induced slope failure occurs due to high water pressures in the sand layer below the soft top layers in a polder. The top layers are lifted due to water pressure invoking slope instability. The mechanism is significant in the Dutch lowlands. In this paper a new stability design model has been presented and corresponding geocentrifuge testing, a full-scale field test, and numerical validation are discussed, as well as the influence of the human factor. Comparisons of the new model with four existing models are shown for ten Dutch representative polder dikes. Furthermore, safety aspects are discussed and conclusions are drawn. The new design model has been incorporated in the Dutch national guideline for dike design.     

侧钻井防砂工艺技术

针对铡钻井井身结构的特点，简要介绍了两种稠油侧钻井防砂技术的机理和内容。其中，在小直径筛管防砂技术中，防砂筛管和封隔器的设计是主要的；而通过室内试验证明，高温人工井壁完全能够满足现场防砂要求。     

Erosion-corrosion of candidate HVOF aluminium-based marine coatings

This paper describes gravimetric results of HVOF sprayed commercially pure Al and Al/12% Si eutectic alloy coatings obtained under erosion-corrosion conditions. The performance of these coatings are compared to a hot-dipped zinc coating. These coatings have been applied to AISI 1020 carbon steel substrates and tested in a free jet impingement rig with a variety of fluids and slurries to enable the erosion and corrosion contributions to the total erosion-corrosion removal of the surface to be determined. Tests have been conducted at 30° and 90° jet impingement angles at jet velocities of 3.5 m/s.Erosion damage mechanisms are identified and the erosion-corrosion mass loss results discussed in terms of the contributions made by erosion and corrosion. Zinc was found to suffer severely from flow corrosion, while the other targets did not. All target materials under sand erosion lose mass in a way directly proportional to kinetic energy, and inversely related to hardness. Corrosion losses are relatively small while the generation of solid products sometimes results in net weight gains. There are greater mass losses at nominally normal incidence than at nominally oblique incidence, due to particle interference effects. Synergy is found to be both positive and negative and appears to be angle dependent, but is difficult to determine precisely.     

高夯击能强夯加固砂土地基的效果分析

本文以内蒙古自治区西南部地区一风成沙丘场地为例,阐述了对于大面积高夯击能处理风成沙填土地基的设计与施工,并利用大型堆载静载荷试验、静力触探、动力触探等多种原位测试方法进行了加固效果检测与分析.总结了一套对风成沙填土地基的处理及检测的经验与方法,可供类似地基加固设计与检测时参考.     

简易充填站的设计与应用

介绍了简易充填站的设计方法和调试、使用情况，阐述了简易充填站适用于地下小型富矿体采场的充填     

Failure envelope considering the ultimate tensile capacity of suction caissons in sand

Little analytical work has been done to elucidate the ultimate capacity of suction caissons under vertical tensile (V), lateral (H), and moment (M) loads in soils. In this paper, in order to reveal the effect of vertical tensile, lateral, and moment loads on the ultimate capacity of suction caissons in sand, an analytical investigation was made using a traditional bearing capacity theory. Taking account of the vertical equilibrium of an annular element of a skirt, through the vertical tractions inside and outside the skirt of a suction caisson when a vertical tensile load is applied, the vertical displacement of the soils adjacent to the skirt of the suction caisson was presented. The most appropriate bearing capacity equation for predicting the experimental results was shown for suction caissons having an embedment larger than a diameter in sand. For the deformation-load responses of suction caissons with various embedment ratios in sand, subjected to inclined tensile loads, there was a good agreement between the results obtained from laboratory tests and those predicted by the present method. The failure surfaces, considering the ultimate tensile capacity in the H-M, H-V, and M−V planes, and in the H-M−V space, for suction caissons in sand, were presented.     

砂芯储存立体库及输送系统的两种应用形式

介绍了近几年在湿型粘土砂铸造车间逐渐推广起来的以自动化立体仓库为存储单元的砂芯储存及输送系统在立体仓库应用上的两种形式,及其各自的优缺点.     

Two-scale evaluation of remediation technologies for a contaminated site by applying economic input-output life cycle assessment: risk-cost, risk-energy consumption and risk-CO2 emission

A two-scale evaluation concept of remediation technologies for a contaminated site was expanded by introducing life cycle costing (LCC) and economic input-output life cycle assessment (EIO-LCA). The expanded evaluation index, the rescue number for soil (RN_SOIL) with LCC and EIO-LCA, comprises two scales, such as risk-cost, risk-energy consumption or risk-CO₂ emission of a remediation. The effectiveness of RN_SOIL with LCC and EIO-LCA was examined in a typical contamination and remediation scenario in which dieldrin contaminated an agricultural field. Remediation was simulated using four technologies: disposal, high temperature thermal desorption, biopile and landfarming. Energy consumption and CO₂ emission were determined from a life cycle inventory analysis using monetary-based intensity based on an input-output table. The values of RN_SOIL based on risk-cost, risk-energy consumption and risk-CO₂ emission were calculated, and then rankings of the candidates were compiled according to RN_SOIL values. A comparison between three rankings showed the different ranking orders. The existence of differences in ranking order indicates that the scales would not have reciprocal compatibility for two-scale evaluation and that each scale should be used independently. The RN_SOIL with LCA will be helpful in selecting a technology, provided an appropriate scale is determined.     

强夯结合砂桩在软基处理中的应用

本文通过工程实例阐述了强夯结合砂桩的方法在软基处理中的应用,介绍了强夯结合砂桩进行软基处理的方案,并通过试夯区的试验检测证明了该方案的可行性。该软基处理方法取得了良好的时间效益和经济效益,对相关工程具有一定的借鉴和指导意义。