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1.
《价值工程》2016,(25):170-171
结合黄陵矿业有限公司一号煤矿回采工作面切眼断面、支护参数及设备配置情况,设计和优化了回采工作面大断面切眼煤机窝子施工工艺,实现了大断面切眼煤机窝子的高效施工,有效地降低了大断面切眼支护费用、减少了大断面切眼的维护次数。通过实践证实了优化后施工工艺的可行性,为一号煤矿回采工作面大断面切眼施工煤机窝子积累了成功的经验,可为类似地质条件下施工回采工作面切眼煤机窝子借鉴。  相似文献   

2.
在对松软厚煤层进行施工作业的过程中,采用联合支护技术对该工作面切眼进行支护处理,进而确保采面安装、回采的安全性。本文通过分析阐述二1-21070(里)采煤工作面位置及地质构造、切眼支护设计参数等,同时提出相应的政策建议,为松软厚煤层施工提供参考依据。  相似文献   

3.
文章对主焦煤矿大断面综采切眼联合支护技术进行了深入研究,采用矿工钢、锚索与单体支柱联合支护形式在厚煤层大断面综采切眼的成功实践,证明了该项技术是一种经济、实用、安全、有效的厚煤层大断面切眼支护技术,为今后在同类条件下施工大断面切眼提供了有力的技术保障。  相似文献   

4.
在对松软厚煤层进行施工作业的过程中,采用联合支护技术对该工作面切眼进行支护处理,进而确保采面安装、回采的安全性。本文通过分析阐述二1-21070(里)采煤工作面位置及地质构造、切眼支护设计参数等,同时提出相应的政策建议,为松软厚煤层施工提供参考依据。  相似文献   

5.
赵奎 《价值工程》2022,(25):75-77
工作面切眼均在老空区下及在老空区煤柱下采取优化支护设计、超前管棚支护、导硐、二次刷扩、迈步换棚施工。安全、顺利地完成了采空区下切眼施工。  相似文献   

6.
文章介绍了亳州煤业股份公司在复杂地质条件下综采工作面切眼施工过断层、煤顶进行的支护研究,取得了很好的效果,为以后的切眼施工提供借鉴。  相似文献   

7.
杨红旗  王振 《价值工程》2011,30(13):60-61
针对平煤股份六矿丁6-22170综采面切眼围岩特点及对巷道的要求,依据锚杆支护的悬吊、组合梁及楔固等共同作用机理,通过理论计算设计结果,提出了该切眼锚网支护主要技术参数及施工工艺,为在类似条件下综采面切眼进行锚网、锚索支护提供技术参数。  相似文献   

8.
降承春 《科技与企业》2013,(20):201+204
现如今综放面切眼大断面掘进工艺初步成型,有待进一步调整与研究,为了更好的促进综放面切眼大断面掘进工艺的发展与煤矿安全,也为了能够通过改进工艺来节省人力与缩短工期,特以山西焦煤汾西矿业新峪公司开采工作面为例子,对综放面切眼大断面掘进工艺施工前的准备与安排、综放面切眼大断面掘进工艺施工中巷道断面及支护形式以及综放面切眼大断面掘进工艺施工技术的分析进行了进一步的研究与探讨,提出了一些个人看法和建议,供各位朋友批评指正。  相似文献   

9.
大跨度隧道施工的技术性较强.文章介绍了高速公路大跨度隧道的施工技术,施工过程中,通过对开挖方法的灵活调整,通过采用洞口管棚超前支护、洞内超前小导管注浆预加固、系统锚杆和钢拱架及喷射混凝土作为初期支护,确保了施工安全.  相似文献   

10.
大跨度隧道施工的技术性较强。文章介绍了高速公路大跨度隧道的施工技术,施工过程中,通过对开挖方法的灵活调整,通过采用洞口管棚超前支护、洞内超前小导管注浆预加固、系统锚杆和钢拱架及喷射混凝土作为初期支护,确保了施工安全。  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.  相似文献   

17.
We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.  相似文献   

18.
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.  相似文献   

19.
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.  相似文献   

20.
杨明 《价值工程》2012,31(7):16-17
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。  相似文献   

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