圆盘式矿山荒料锯切机的操作

本文介绍了新型石材矿山荒料切石机在石材矿山上的应用及操作技术。重点介绍华隆牌矿山圆盘式石材荒料锯切机在石材矿山应用中的轨道铺设技术,切割工艺中的下刀渐进技术,机械操作以及电气操作,从而使矿山圆盘式石材荒料锯切机的能够保持良好的工作效率,增加机械的使用寿命,提高生产效率,从而增加石材矿山企业的经济效益。     

我国石材机械的发展趋势和技术创新主题

近些年来,随着建筑、装饰业的发展,各种品种、规格的石材制品需求量迅速增加,从而刺激了石材加工机械的发展.目前,我国石材机械制造业已初具规模,各种用途的石材机械应运而生.由于国外大型设备充斥国内市场,国内石材机械面临着前所未有的挑战.无论是引进国外的石材机械,还是研制我国的石材机械,都必须了解国际石材机械的发展趋势,以期增强我国石材工业与国际竞争的能力.现就有关石材加工机械的发展作些论述.     

中国石材工业协会机械与工具专业委员会在沪成立

2009年2月14日中国石材工业协会机械与工具专业委员会成立大会在上海召开.中国石材工业协会会长邹传胜、秘书长刘建华及来自全国石材机械与工具企业及部分石材加工企业的代表、有关专家学者参加了会议.会议由秘书长刘建华主持,会长邹传胜作了重要讲话.他指出: "中国石材工业协会石材机械与工具专业委员会的成立是我国石材行业的一件大事,对推动现代石材业发展具有重要意义.现代化行业的装备是行业现代化的重要标志,石材机械与工具企业的技术进步是石材行业产品技术升级的基础.     

浅谈石材机械的色彩设计

<正>0引言随着石材行业的发展,工业设计元素越来越多地出现在石材机械的设计生产过程中。产品色彩设计作为工业设计中的重要组成部分,可以传达工业产品的重要功能信息。作为形态以外的另一个设计要素,色彩是无可替代的信息传达方式和最富有吸引力的设计手段之一。因此,石材机械的色彩设计,是石材机械企业需要重视的产品元素,是未来石材机械与工具发展的重要领域。1石材机械色彩设计的意义1.1突出机械功能性石材机械种类繁多,功能各异,体积结构也相差     

静压导轨在石材机械中的应用

石材机械中导轨是石材机械关键的运动零部件之一,直接影响石材机械的工作性能,使用寿命以及石材表面的加工质量,本文就石材机械设计制造常用的几种导轨进行比较,着重推出静压导轨,并对设计动静压支承导轨从理论上进行探讨,以及在制造和使用中应注意那些的问题.     

静电喷塑工艺在石材机械中的应用

本文介绍静电喷塑工艺在石材机械制造过程中应用的基本原理，静电喷塑的工艺流程以及各工序的相关设备和使用材料，并对静电喷塑工艺在石材机械制造应用中常见的故障及处理措施进行了详细的分析。对在石材机械上的应用效果和成本进行了介绍和分析比较，以供石材机械制造企业同行进行参考，从而不断采用新技术和新工艺去提高石材机械的质量和制造水平，以促进石材业的飞速发展。     

印度石材企业全力争取俄罗斯石材市场

2009年7月15日,石材机械与工具专业委员会专家组成立大会暨石材机械与工具应用技术研讨会在青岛举行。中国石材协会会长、副秘书长等专家和领导参加了此次会议。     

高压水射流在石材工业中的应用

当前,利用管件、泵和喷嘴己可以产生压力达400兆帕的高压水射流。这些工具的发展使研究人员与工业家产生了用高压水射流开采切割石材的兴趣。经过多年的研究,高压水射流在石材工业中的使用方式有以下两种: 1.单独使用高压水射流; 2.和传统的开采石材的机械刀具结合起来使用。第一种使用,是在石材加工厂     

石材加工机械发展趋势

石材机械与石材矿山建设以及石材加工工艺密切相关。近30年来,国家石材开采与加工业的持续发展带动了石材机械制造业的兴旺。我国的石材工业正处在蓬勃发展阶段,为了满足石材矿山建设与石材加工业的需要,无论是研制本国的石材机械或是引进国外的石材机械都必须了解国际石材机械的发展趋势,     

第四届乌克兰国际石材及加工机械展览会在即

我国石材及石材机械产品将在第四届乌克兰国际石材及加工机械展览会上亮相。在今年10月23日至25日在乌克兰基辅国际展览中心举行的石材展会上，我国石材及石材机械在乌与全球同行向中东欧客商展示风采。     

Performance enhancement of encased stone column with conductive natural geotextile under k0 stress condition

In this study, the performance of the stone column encased with conductive jute geotextile in improving the characteristics of soft clay under k₀ stress condition was evaluated using a custom-designed large-scale consolidation test setup. The electrokinetic-encased stone column (e-ESC) was designed as a cathode, while mild steel rods were chosen as anodes, and by applying a voltage gradient of 0.1 V/mm between the electrodes, electrokinetic processes were initiated. The efficacy of using the e-ESC in improving the performance of soft clay was assessed by comparing the results with an ordinary stone column (OSC) and encased stone column (ESC) reinforced soft clay. The results from the study reveal that the inclusion of stiffer material like OSC and ESC in soft clay has significantly increased undrained shear strength and modulus of subgrade reaction of the composite ground with a reduction in settlement and compression index. Due to the application of the voltage gradient between the electrodes, the rate of consolidation settlement of composite ground has significantly increased when compared to the OSC/ESC case. Further, it was confirmed from the chemical and mineralogical analysis that the pH, chemical composition, mineral phases, and microfabric of soft clay were altered with the voltage gradient.     

Laboratory model studies on unreinforced and geogrid-reinforced sand bed over stone column-improved soft clay

Results from a series of laboratory model tests on unreinforced and geogrid-reinforced sand bed resting on stone column-improved soft clay have been presented. The diameter of stone column and footing has been taken as 50 mm and 100 mm, respectively for all the model tests carried out. Load was applied to the soil bed through the footing until the total settlement reached at least 20% of footing diameter. As compared to unimproved soft clay, the increase in load-carrying capacity under different improved ground conditions has been observed. Influences of the thickness of unreinforced as well as geogrid-reinforced sand bed and the size of geogrid reinforcement on the performance of stone column-improved soft clay bed have also been investigated. Significant improvement in load-carrying capacity of soft soil is observed due to the placement of sand bed over stone column-improved soft clay. The inclusion of geogrid layer within sand bed further increases the load-carrying capacity and decreases the settlement of the soil. Due to the placement of sand bed, the bulge diameter of stone column reduces while the depth of bulge increases. Further reduction in the bulge diameter and increase in bulge depth are observed due to application of geogrid layer. The optimum thickness of unreinforced sand bed is twice the optimum thickness of geogrid-reinforced sand bed. Under specific material properties and test conditions, it is further observed that the optimum diameter of geogrid layer is thrice the diameter of footing.     

干振碎石桩在加固软弱地基施工中的应用

碎石桩能使地基承载力成倍提高,说明了碎石柱在软弱地基中的推广和应用。     

石材矿山直采机的研制

本文着重介绍工程石材矿山直采机的结构,工作原理及控制方法。该成果的推广应用,从根本上解决了工程石材传统开采和加工不安全、成本高等问题,实现矿山资源的高效利用及节能环保。     

谈改性沥青同步碎石下封层施工控制

就太佳高速公路工程施工实践,对改性沥青同步碎石下封层施工材料与机械准备、施工前准备、工艺流程及技术控制要点作了详细介绍,经实践证明了该技术的推广价值。     

碎石桩在软弱地基中的应用

就碎石桩的类型、加固地基原理、适用范围、碎石桩的设计与施工方法作了研究总结 ,并对常用的几种碎石桩作了比较。指出碎石桩在处理软弱地基中的优势     

Performance of polypropylene textile encased stone columns

This paper explores the potential use of a woven polypropylene textile for encapsulating stone columns and improving performance of a local soft soil in Warangal city of India. A series of axial load tests were performed on stone columns of various diameters and under various encapsulation conditions that include single and double layers and other combinations. Load carrying capacity of stone column increased twice its original capacity when encapsulated with different geofabric materials. Performance enhancement strongly correlated to the tensile strength of encasement material and encapsulation condition. In addition, the influence of lateral thrust on group of stone columns arranged in square and triangular patterns were investigated. Irrespective of the material used, lateral displacement reduced by half for encased stone columns. Apart from tensile strength of encasing material, the amount of material used for encasement in the form of additional encasement layer was found to be crucial. The cost of using the polypropylene encasing material is only a third of the commercial geotextiles; however, the performance is inferior to woven geotextiles but far superior to non-woven geotextiles.     

Failure modes and ultimate bearing capacity of the isolated stone column in soft soil

Bulletin of Engineering Geology and the Environment - The bearing mechanism of the isolated stone column in soft soil is a complex problem involving interactions of the granular material...     

青莱高速公路柔性基层施工质量控制浅析

讲述了青莱高速公路在半刚性基层顶设置15 cm大粒径透水性沥青混合料柔性基层,结合青莱高速公路的特点,从原材料、混合料质量控制到施工工艺都进行了有益的探索,从而更好地保障柔性基层的施工质量。     

大跨度纯石建筑中预应力技术的应用

预应力技术在纯石建筑中的应用及研究在我国鲜有报道,将预应力技术运用于石构件中,可大大改善石构件的受力性能,并提高石材建筑的使用范围,使纯石建筑的发展不再受材性的限制.预应力石结构不但可以充分发挥石材天然的材质性能,还可以继续传承传统建筑结构体系中的榫卯技术,具有永久的保存价值和建筑的艺术性.通过试验和理论分析,新技术的...