紫金山金矿溜井堵塞原因分析及其预防

对于应用平硐溜井开拓运输系统的露天开采矿山来说，溜井是其咽喉，溜井正常与否对矿山生产影响极大。溜井故障主要有堵塞、跑矿和井壁损坏3类，溜井堵塞是紫金山金矿溜井故障的主要问题。文中根据溜井堵塞机理，从矿石物理力学性质、溜井结构、溜井生产管理等几个方面。深入分析了紫金山金矿溜井堵塞原因，并提出预防办法。     

紫金山金铜矿深部主溜井控制放矿技术及应用

矿山主溜井使用过程中出现的井壁垮落和料位过高或过低问题,经常导致井筒大块堵塞、分支溜井无法卸矿、溜井放空等现象,严重影响主溜井放矿效率。针对紫金山金铜矿深部主溜井放矿存在的问题,采用溜井可视化探测与建图技术掌握溜井垮落现状,并得到溜井料位与溜井存矿量关系,结合各分支溜井卸矿量和主溜井放矿量,确定溜井料位低位值和高位值;采用微波窄束测距技术实时监测溜井料位;并提出了基于料位控制和分支溜井卸矿控制的溜井放矿管理制度,解决了溜井大块堵塞、分支溜井经常无法卸矿、溜井经常放空等问题,大幅提升了溜井放矿效率。     

药壶爆破在处理溜井堵塞中的应用

溜井是利用矿岩自重从上往下溜放矿岩的巷道,是地下矿山生产转运矿石的咽喉工程,一旦发生堵塞,将会影响整个矿山生产的正常进行。根据某铁矿溜井堵塞情况及疏通难题,尝试性地应用扩壶爆破技术处理溜井堵塞,取得了快速、经济、安全及爆破效率高的理想疏通效果。     

地下金属矿山溜井堵塞原因分析及优化措施

针对蒙库铁矿938阶段运输水平矿石溜井经常发生堵塞导致蓬矿的现象,结合矿山实际情况对溜井堵塞问题进行了深入研究,从不同角度分析了溜井堵塞发生的原因,结合溜井的设计质量、施工质量、对入井物料的控制、溜井的溜放管理及制定相应管理制度的方向着重讨论了溜井堵塞的疏通措施及溜井堵塞现象的预防措施,提出了溜井的生产需要遵守“计划到矿、均衡输出”的原则,为后期溜井的设计和优化及发生堵塞现象后的治理措施提供有效参考。     

地下矿山高深溜井防堵塞技术研究及实践

高深溜井在使用过程中频繁发生堵塞现象,已成为影响地下矿山安全高效生产的重要因素。针对高深溜井井筒堵塞问题,以某金铜矿高深溜井为研究对象,分析了溜井矿石的移动规律,发现高深溜井矿石移动过程中在自由落体下落区和等速垂直全断面移动区之间存在垂直全断面间隔移动区;总结了高深溜井堵塞的主要原因有贮矿高度不合理、贮矿时间过长和溜井破损严重等;通过调查该金铜矿溜井运行过程存在的问题,提出了溜井料位监测技术、井筒加固技术和溜井放矿自动控制技术等预防高深溜井堵塞的技术措施,应用效果较好,可为类似矿山提供参考借鉴。     

紫金山金矿高位溜井的防跑矿技术

溜井作为运输矿石途径之一。具有依靠自重溜放经济性的一面，在矿山生产中被广泛采用。文中针对紫金山露天采场溜井及溜井管理状况，分析了溜井跑矿原因，通过对溜井的跑矿危害提出防治措施，意在实际生产中能够预防跑矿事故发生，利于矿山生产，并对相应矿山生产有一定的借鉴作用。     

鸡笼山金矿溜井堵塞原因分析及堵塞疏通实例

溜井堵塞是采用平巷溜井开拓运输矿山影响正常生产最频繁的事故之一。鸡笼山金矿矿体形态复杂,采场溜井容易堵塞,因此,分析溜井堵塞原因,总结堵塞处理实践经验,显得至关重要。分析了几种常见的溜井堵塞状况及原因,介绍了堵塞溜井疏通方案及管理措施,值得同类型矿山参考。     

放矿溜井堵塞问题的处理实践及预防

放矿溜井放矿能力的好坏，直接影响着整个矿山的生产效率及经济效益。一旦发生放矿溜井堵塞，则严重影响矿山的正常生产，乃至于造成停产。文中阐述了放矿溜井堵塞产生的原因、解决方法及预防措施，在吉林富家矿的生产实践中收到了良好的效果。     

溜井放矿风险综合分析与控制

矿床开拓是矿山建设的重要一环,开拓方式又与运输方式有密切联系,在有条件利用矿石重力运输时,溜井运输系统是首选方案。根据溜井中矿石移动规律和考察资料,结合溜井的运行情况,对溜井放矿的各种风险进行了分析,包括磨损与破坏、放矿堵塞、跑矿等,并提出相应避免溜井破坏和堵塞的措施。除粉矿和水的含量难以同时控制外,溜井放矿的风险是可控的。     

紫金山金矿高效窄轨原矿运输系统设计

介绍总结了紫金山金矿高溜井夺动给矿机、20t电机车双机同步牵引和12m^3底侧卸矿车及卸载站工程设计及应用。     

The Effective Mediator

Mediation is becoming the premier method of resolving disputes within the construction industry. The linchpin to the mediation process is the mediator. An effective mediator may make the difference between mediation success or failure. Yet, considering the importance of an effective mediator, there is a dearth of information as to the attributes of one and how to recognize and retain one. Considering the importance of mediation in the arbitration process as well as the trend toward court ordered mediation, it behooves industry members to understand the attributes of an effective mediator. This paper will discuss the skills an effective mediator needs to assist the parties in moving forward, crafting a sustainable settlement as well as leave the disputing parties and their counsel satisfied with the process and result. It will alert readers what to look for when engaging a mediator’s service and what questions need to be asked in the quest for the effective mediator to assist in the resolution of disputes.     

Insight into Resolving Construction Disputes by Mediation/Adjudication in Hong Kong

Resolving construction disputes using an adversarial approach is considered to be in opposition of the maintenance of a harmonious relationship between two parties. The modern arbitration process may emulate the litigation proceeding leading to delay and cost escalation. During the past decade, the Hong Kong Government has implemented a mediation clause as an alternative mode for settlement of construction disputes. In this paper, the experience and insight into resolving construction disputes by integrating mediation and then arbitration in Hong Kong are highlighted. The state-of-the-art modern mediation process and its philosophical origins are reviewed. The shortcomings of the present system are pinpointed. The success of the adjudication now practiced in the United Kingdom may suggest that there is a place for another process of dispute resolution, which may help improve the situation. The prospect of the proposed mediation/adjudication and then arbitration mechanism is discussed with particular reference to the construction industry in Hong Kong.     

Mediators, moderators, and tests for mediation.

Discusses mediation relations in causal terms. Influences of an antecedent are transmitted to a consequence through an intervening mediator. Mediation relations may assume a number of functional forms, including nonadditive, nonlinear, and nonrecursive forms. Although mediation and moderation are distinguishable processes, with nonadditive forms (moderated mediation) a particular variable may be both a mediator and a moderator within a single set of functional relations. Current models for testing mediation relations in industrial and organizational psychology often involve an interplay between exploratory (correlational) statistical tests and causal inference. It is suggested that no middle ground exists between exploratory and confirmatory (causal) analysis and that attempts to explain how mediation processes occur require specified causal models. (57 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Defining a threshold for client competence to participate in divorce mediation.

The ultimate aim of court-ordered divorce mediation is to produce settlement agreements. Once ratified by the court, these agreements are legally binding and extremely difficult to modify. Courts assume that everyone is adequately equipped to mediate and, with increasing frequency, order litigants into mediation. Nonetheless, commentators have acknowledged that at least occasionally, a party may be unable to proceed. Currently, no standard exists for determining when a party lacks sufficient understanding and ability to participate in mediation, yet the legally binding outcomes of mediation are too important to leave a determination of competence up to chance. In this article, the authors propose a new legal standard, with a basis in current law and policy, for competence to participate in mediation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Child and family coping one year after mediated and litigated child custody disputes.

Evaluated child and family outcomes 1 yr after parents had used mediation (n?=?32) or litigation (n?=?26) to settle custody disputes over children aged 2–17 yrs. One year after settlement, parents in mediation showed greater correspondence in perceptions of the settlement process and of their child's problems. Contrary to expectations, there was a greater association between parent and child problems among families in mediation. Child outcomes did not differ in the mediation and litigation groups but did differ according to the level of parental conflict. Custody settlements that promote ongoing contact between parents after divorce may offer both rewards and risks. Children can benefit when the parents' relationship is cooperative, but may suffer when the parents continue to fight. More intensive intervention may be needed to help parents maintain generational boundaries and shelter their children from conflict after divorce. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A critical reappraisal of divorce mediation research and policy.

Because of the many problems associated with litigating divorce disputes, mediation has been proposed as an alternative. Its proponents, claiming wide-ranging benefits for both the litigants and the legal system, have had tremendous success in advancing mediation in social policy. This article critically assesses the validity of these claimed benefits. The article first considers the role of pro se representation and its potential consequences for evaluating divorce mediation because of the increased use of pro se representation in these cases. The article then articulates the goals attributed to the mediation procedure and its clients, identifies the behavioral assumptions underlying those goals, and critically reviews the social science research and theory that have directly tested the validity of the goals and assumptions or are indirectly relevant to the analysis (B. D. Sales, 1983). It is concluded that the goals of divorce mediation may have been and may be overly optimistic. The implications of these findings for mediation practice and policy are considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

隐伏峪耳崖型金矿找矿线索

峪耳崖金矿是一个产于小型花岗岩体中的大型金矿床,为了找到同类型金矿,从研究和总结峪耳崖金矿成矿条件和成矿规律入手,采用沿控制峪耳崖岩体NE向断层带追索的方法,在其南西约7 km的二河店东山发现了一条NE走向的花岗斑岩脉。该花岗岩脉宏观特征及岩性特征与峪耳崖含矿花岗岩极为相似,只是其中的石英多为六方双锥体,属高温β石英,预示着其深部可能有中低温花岗岩体发育。在该岩脉南侧发育有2条NW向含金石英脉,其品位和厚度变化趋势显示成矿溶液来自该岩脉的深部。另外,通过化探扫面在该岩脉周围圈出一个金的化探异常。根据这些情况,预测在该处地下的深部可能有隐伏的第二个峪耳崖型含金花岗岩体存在。期望这一认识能够成为寻找隐伏峪耳崖型金矿的一个依据和线索。     

Mediation as a Method of Parent Intervention in Children's Disputes.

This study examined the feasibility and short-term effects of mothers' use of mediation to help children (5 to 8 years) resolve disputes. Families in which mothers were trained to use mediation were compared with control families on intervention strategies at home and discussion of a recurring conflict in the laboratory. With training, mothers could use mediation strategies, and these strategies were favored by both mothers and children. Children responded appropriately to mediation (reasoning, discussing emotions, and understanding motivations more often than in control families). Mediation empowered children, particularly younger siblings, to solve conflict issues. Although questions of the long-term implications of mediation remain, this study suggests that mediation may be a powerful parenting tool, promoting social understanding and productive conflict resolution. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Daily mortality in Madrid community 1986-1992: relationship with meteorological variables

Spontaneous regression of cancer is reported in virtually all types of human cancer, although the greatest number of cases are reported in patients with neuroblastoma, renal cell carcinoma, malignant melanoma and lymhomas/leukemias. Study of patients with these diseases has provided most of the data regarding mechanisms of spontaneous regression. Mechanisms proposed for spontaneous regression of human cancer include: immune mediation, tumor inhibition by growth factors and/or cytokines, induction of differentiation, hormonal mediation, elimination of a carcinogen, tumor necrosis and/or angiogenesis inhibition, psychologic factors, apoptosis and epigenetic mechanisms. Clinical observations and laboratory studies support these concepts to a variable extent. The induction of spontaneous regression may involve multiple mechanisms in some cases although the end result is likely to be either differentiation or cell death. Elucidation of the process of spontaneous regression offers the possibility of improved methods of treating and preventing cancer.     

A general multilevel SEM framework for assessing multilevel mediation.

Several methods for testing mediation hypotheses with 2-level nested data have been proposed by researchers using a multilevel modeling (MLM) paradigm. However, these MLM approaches do not accommodate mediation pathways with Level-2 outcomes and may produce conflated estimates of between- and within-level components of indirect effects. Moreover, these methods have each appeared in isolation, so a unified framework that integrates the existing methods, as well as new multilevel mediation models, is lacking. Here we show that a multilevel structural equation modeling (MSEM) paradigm can overcome these 2 limitations of mediation analysis with MLM. We present an integrative 2-level MSEM mathematical framework that subsumes new and existing multilevel mediation approaches as special cases. We use several applied examples and accompanying software code to illustrate the flexibility of this framework and to show that different substantive conclusions can be drawn using MSEM versus MLM. (PsycINFO Database Record (c) 2010 APA, all rights reserved)