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1.
新立矿区-200米中段是新立矿区主要供矿的运输巷道,也是新立矿区矿体在西南走向上已探明最远的一个中段。通过坑探工程揭露发现,此段控矿主裂面及矿体和以前的矿体产状有一定的变化,弄清此中段矿体的走向产状和岩石及水文条件对于矿区-200中段的以下的西南部探矿工程和采准工程的布置有重要的指导意义。  相似文献   

2.
广西兴业县佛香山金矿床位于华南准地台钦州残余地槽的六万大山隆起区西北边缘,灵山~藤县深断裂以南的山背向斜东翼佛香山岩体分布区。通过野外地质工作,现已圈定了7个矿体。矿体呈似层状,透镜状,走向近东西向,沿走向或倾向有分支复合,矿体主要赋存于三叠系的火山喷出岩(T2∧)中,赋矿岩性主要为碎裂沉火山角砾凝灰岩、火山角砾凝灰岩、火山凝灰角砾岩。文章在详查成果基础上,通过成矿地质背景、矿区地质概况和矿床地质特征的阐述,着重对矿床成因、控矿因素及找矿标志进行分析,认为该矿属重熔岩浆热液次火山岩型金矿床。  相似文献   

3.
半坑萤石矿位于南岭东段成矿带,萤石矿体呈脉状、透镜状、团块状赋存于侏罗纪中世花岗岩体(J2γ5^2-3)断裂破碎带中,矿体受构造控制作用明显,与围岩界线较清楚,为典型的中-低温热液充填型矿床。矿区构造简单,主要为断裂构造,北北西向断裂与北东向断裂形成的“X”型构造,断裂性质多样并具多期次变形的特征。断裂构造为成矿元素的迁移通道和沉淀与富集的空间,是矿区主要的控矿构造。  相似文献   

4.
《企业技术开发》2015,(7):48-51
通过对矿区开展地质勘查工作,在深部控制了萤石矿体的规模、产状、形态和空间位置。矿区萤石矿体主要产于F2构造破碎带内,矿体形态、产状受断裂构造所控制。矿石类型主要有萤石型、石英—萤石型、角砾岩—萤石型,多呈网脉状、角砾状、块状矿石构造。文章根据矿体产出特点及围岩蚀变特征,结合国内类似矿床的成矿地质特征,认为矿床成因类型为中—低温热液裂隙充填型。  相似文献   

5.
《企业技术开发》2017,(5):93-95
大坳金矿区位于赖子山背斜中部,矿体主要赋存在栖霞组二段中部的灰绿色含凝灰质粘土岩、瘤状含泥质灰岩中,矿体呈似层状、透镜状等产出,产状与地层基本一致。根据矿区地质特征,文章认为其成因类型为微细浸染型。  相似文献   

6.
矿区位于黔北台隆之六盘水断陷与遵义断拱两个三级构造单元结合部位,矿体主要产于石炭系、二叠系白云岩及灰岩中,矿体的主出严格受断层控制,矿区内主要控矿构造为F1和F2。文章分析了猫猫厂—榨子厂铅锌矿床的成矿地质特征,认为铅锌成矿的潜力大,矿床深部及外围找矿前景好。  相似文献   

7.
沈卫立 《价值工程》2014,(22):308-310
曹四夭钼矿是河南省地勘二院2010年新发现的一个特大型钼矿。通过详查工作发现,山前断裂F1断层的下盘迎水一侧基岩裂隙含水层富水性中等-强,是矿坑的主要充水含水层。矿床主要直接充水因素为矿体基岩裂隙水和大气降水。将来矿山开采应注意基岩裂隙水和临时性暴雨形成的洪水对矿坑的危害。矿区水文地质条件的研究对未来矿山设计、开发及相邻矿区水文地质工作具有指导和借鉴意义。  相似文献   

8.
葫芦丘铅锌矿产于矿区北东向构造蚀变脉中,矿体呈透镜状、脉状,明显受断裂构造控制。矿区出露地层单一,为侏罗系上统南园组第二段,岩性为中酸-酸性火山碎屑岩。成矿与岩浆侵入及火山活动紧密相关,为中低温岩浆-火山热液型矿床。  相似文献   

9.
矿区内金矿体赋存于上元古界阎王殿组碳质绢云母板岩中,受北东向断裂构造控制明显,尤其是层间破碎带和小褶皱发育部位,为矿液富集提供有利空间;岩浆岩的侵入对成矿元素的活化、迁移、富集起着重要作用;围岩蚀变主要以硅化、褐铁矿化和黄铁矿化为主,金矿化伴随蚀变而生,且金矿化与硅化、褐铁矿化和黄铁矿化关系最密切,在硅化-褐铁矿化、硅化-黄铁矿化相互叠加处,是金矿体形成的最有利地段。  相似文献   

10.
一、前言 地质构造是易于观察到易于把握住的控矿因素之一。因此,立足于构造,研究矿体空间分布与构造之间的关系,从而把握矿体分布规律,里伍铜矿矿区主要发育组生成时期、方位和特征不尽相同的褶皱及其伴生断裂。  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.
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   

18.
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   

19.
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   

20.
丛广英  乔炜君 《价值工程》2010,29(6):245-245
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。  相似文献   

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