深井软岩注浆加固支护技术应用

为了合理确定支护方案和支护参数,解决矿井深部区域支护效果差、巷道易变形难题,针对平煤股份一矿-517m丁戊组石门岩体破碎软弱,具有持续变形特点和围岩流变特性,在提出科学控制巷道流变机理基础上,选择"锚网索支护+喷浆+导管注浆+集束锚索注浆"等联合控制围岩加固技术对其进行修复。实践证明,该支护方案能够解决流变围岩巷道变形问题,保证了巷道断面和正常使用。     

砌碹巷道变形破坏机理及修复技术研究

基于巷道围岩软弱破碎、壁后充填不实、砌碹被动支护等不利条件,分析了伯方煤矿二盘区变电所变形破坏机理及原因,提出"壁后充填+深部注浆+锚杆、锚索加固"的联合修复技术,成功解决了变电所的修复难题,取得了良好的支护效果。工程应用表明,该技术能够有效控制巷道的变形,保证了巷道继续服务,是解决软弱破碎围岩砌碹巷道支护的有效途径。     

深部巷道围岩支护设计分析

通过数值模拟计算,对巷道围岩应力分布及变形特征进行分析,同时提出支护方式。对于深部大变形、较破碎、巷道分叉处的巷道提出并设计了全封闭等应力可协调变形支护方式,对深井围岩变形机理和控制的研究具有积极意义。     

深井巷道围岩控制及下山大断面巷道支护

煤矿深部开采巷道与浅部巷道的主要差别是围岩存在破裂区,也是深部巷道支护的重点之一。煤矿大断面煤巷下山支护困难的问题,超前注浆+锚网喷、锚索、U型棚联合支护可有效提高围岩自身的完整性和承载能力,减小围岩塑性区的范围,控制巷道围岩的变形破坏。     

新安矿区深部极软岩巷道锚网喷+网壳联合支护技术应用与实践

针对新安矿区深部极软岩巷经常发生严重底臌、两帮收缩且折帮、顶板非对称下沉、巷道全断面内缩、锚杆(索)拉断、反复修护的现象,分析巷道破坏特征及原因。设计出了锚杆+金属网+喷浆+反底拱+网壳联合支护方式,即采用锚网喷初次支护,再采用网壳二次支护,主动支护与被动支护相结合,保证岩体强度,控制巷道变形。在该矿+535轨道石门应用后,工程实践表明,从根本上控制了轨道石门的非线性大变形,该支护技术有效地控制了深部极软岩巷道围岩的大幅度破坏,保证了巷道全断面的稳定,取得了良好的技术经济效果。     

巷道过极破碎大断层影响带综合加固技术研究与应用

断层带内围岩破碎，自稳能力差，巷道支护困难。某矿西三C组煤中部采区矸石胶带机上山需穿越F24断层，区域地质条件复杂，受构造运动影响，围岩内赋存高水平地应力，巷道处于深部大规模松软围岩内。为确保施工安全，快速掘进，首先采用超前预注浆、小循环注浆对破碎带深部区域局部岩体进行加固，而后采用锚索网喷和二次注浆加固，有效消除了巷道过断层期间的顶板围岩冒落、片帮等各种不安全因素。结果表明，采用上述综合加固技术后，巷道围岩变形控制效果良好，取得了良好的技术经济效果，对今后类似巷道穿越大断层影响带的支护方法与施工提供了参考。     

矿井高应力破碎巷道支护技术研究与应用

文章针对会泽矿麒麟坑深部破碎巷道掘进和使用期间出现的巷道破坏的实际情况,结合现场施工经验,以及现场调查、实测的数据参数,应用理论分析和数值模拟相结合的研究方法,对典型的深部破碎巷道围岩的应力、位移以及塑性区状态进行分析,找出巷道变形破坏规律并提出新的巷道矿压控制措施,在1 031 m中段新的巷道矿压支护中进行现场试验,最终得出合理可行的支护手段,取得了较好的支护效果。     

深部高应力软岩巷道围岩控制技术研究

针对某矿深部高应力软岩巷道两帮移近量大,变形破坏严重,部分地段底臌严重的现象,通过大量的现场地质调查和软岩力学性质试验,分析研究了深部高应力软岩巷道变形失稳机理;通过理论分析和相似材料、数值模拟确定了该矿软岩巷道围岩控制方法及高应力软岩巷道最佳支护方式、支护参数和最佳支护时机.为相邻矿井及相似地质条件下巷道围岩控制提供参考依据.     

深部松软煤层巷道支护技术研究

在煤矿开挖工程中,对于煤矿深部松软煤层巷道支护施工时,掘进过程会伴有大量的顶帮劈冒、相对位移量大,造成严重的围岩破坏。因此,必须针对煤层巷道采取加强支护措施。文章就深部松软煤层巷道支护技术进行研究,结合工程实际特点,制定合理的巷道支护方案,有效控制围岩变形,提高施工质量。     

浅析深部围岩巷道支护技术

由于我国煤矿地质条件较为复杂,巷道支护作为一项重要的煤矿开采技术在煤炭资源开采中具有着重要地位。传统支护方式已不能满足围岩巷道的支护要求,尤其在遇到不稳定的破碎围岩的情况下。本文通过综合采用锚注支护工艺、预应力锚索加固等方式、锚网喷注耦合支护技术的描述,介绍了深部不稳定破碎围岩巷道的支护。     

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.