露天采矿技术及其采矿设备的发展思考

近年来,随着我国经济的不断发展,露天采矿业也取得了较大的发展,同时随着全球合作交流的不断深入,国外各种新型的采矿设备和高科技采矿技术也被引进到国内。我国的矿产能源人均储备量少,消耗量大,这种特点对于露天采矿技术和采矿设备提出了更高的要求,如何利用现代科技提高我国能源产量成为人们关注的重点。因此进行有关露天采矿技术和采矿设备的研究十分必要。文章结合目前我国露天采矿的实际情况,开展露天采矿技术和采矿设备发展的研究,希望能为以后的矿产露天开采工作提供一些帮助。     

关于露天采矿技术及发展方向的探讨

我国是世界上为数不多的矿石资源大国之一,各类矿产资源极其丰富,但是由于受到技术和设备方面的限制,使得矿山开采的效率相对较低。为此,有必要加大对露天采矿技术的研究力度,以此来提高我国矿产资源的开发水平。基于此点,本文就露天采矿技术及发展方向展开探讨。     

露天采矿中降低爆破成本的有效途径

在露天采矿技术的运用中,要增强采矿爆破技术的综合效果,突出爆破技术的创新、安全应用方式,全面降低露天采矿的爆破成本,对于提升露天采矿的整体技术都将有很大的益处。文章围绕露天采矿中影响爆破技术运用的相关因素,从多方面探讨了爆破技术的综合应用方式,形成了降低爆破成本的有效控制措施。     

浅述电铲的正确维护和保养

对电铲技术上的管理方法，日常检查，设备的维护和保养，判断故障及检修等方面的介绍，为露天采矿生产计划的完成提供了必要的保障。     

胜利露天煤矿露天采矿机选型研究

矿山设备是露天矿山生产的物质技术基础,露天采矿机具有一次性投资大、使用条件恶劣、维修保养和运行费用高、对企业生产能力和施工进度影响大等特点。较好地选择和使用露天采矿机,充分发挥其效能并做到经济合理,是关系到企业生存和发展的重要问题。正确合理的选型不仅能够降低能耗,提高生产效率,还能够保障矿山的安全生产。针对胜利露天煤矿5#煤层结构复杂、含矸率高、发热量低研究了影响采矿机使用的各种因素,建立了露天采矿机选型的多目标决策模型,并以胜利露天矿露天采矿机选型为实例,验证了此方法的的正确性和实用性,所采用的研究方法及结论对类似矿山具有重要参考价值。     

降低露天采矿台阶爆破大块率的几种方法

本文从露天采矿台阶大块产生的原因着手,对降低露天采矿台阶爆破的方法做了简单介绍。     

露天采矿设备的发展趋势及对采矿技术的推进作用

<正>中铁十九局集团矿业公司是中铁建系统较早涉足矿山施工领域并逐渐发展壮大的专业化公司,自1986年承建黑龙江乌拉嘎金矿以来,承建的矿山项目大部分为露天矿山项目。与地下开采相比,露天开采具有很多优点,如:受开采空间限制小,有利于实现自动化生产;资源回收率高;劳动生产率高;生产成本低;开采条件好,作业场所比较安全;建设速度快,单位矿石基建成本低。目前,大型露天采矿设备正朝着大型化、智能化、人性化、生态化方向迅猛发展,在发展的同时也对露天采矿技术的发展起到了积极的推进作用。     

露天矿单斗铲设备能力研究

为促进露天采矿事业的发展，对单斗铲设备的能力进行研究。通过对当前单斗铲能力进行理论分析及计算公式分析，得出在单斗铲班实际生产能力计算中没有考虑到卡车入换带来的单斗铲循环时间变化，以及车铲匹配带来的单斗铲作业时间变化；得出单斗铲年实际生产能力计算中没有考虑设备检修、故障、节假日等情况。针对单斗铲实际能力计算中存在的问题，进行理论上的完善，在理论完善的基础上修正单斗铲实际生产能力计算公式，使理论计算和现场实际更加吻合。研究结果将推动露天采矿事业的发展，并对现场实际生产产生指导作用。     

机油化验法在露天煤矿设备发动机故障诊断中的应用

露天煤矿采矿设备发动机是开采设备的保障心脏,做好其故障的诊断与维修是保障煤矿开采工作的基础。论文通过对发动机机油的化验来分析设备的正常与否,揭示了机油化验法对发动机故障的诊断与维修工作的作用。     

雷锋精神在杏山铁矿

杏山铁矿的前身是首钢大石河铁矿一个采矿车间，1966年开始露天采矿，2007年2月露天结束，共采出铁矿石2415万吨。但采区深部还有7800多万吨的矿石资源。因此首钢矿业公司决定杏山采区由露天转入地下开采。首钢矿业公司杏山铁矿以艰苦奋斗、拼搏奉献、百折不挠、自强不息的精神，苦干五年，稳快好省地建成了首钢第一个地下矿山，     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.