鄂东北商城—麻城—团风断裂中段第四纪活动与新构造变形模式初步探讨

分析商城—麻城—团风断裂中段第四纪活动在地质、地貌及水系等方面的特征,并结合震源机制解分析断裂活动的区域及局部现今构造应力场,归纳出该断裂中段新构造变形模式。研究认为该断裂中段最新活动时代在中更新世中期—晚期;现今以正断层兼右旋走滑分量活动为主;区域及局部NE-NEE向构造应力场背景和壳幔尺度差异隆升控制着断裂的活动方式。     

冬瓜山矿区原岩应力场的初步研究

本文讨论在冬瓜山矿区进行原岩应力场初步研究的方法及结果，主要包括矿区构造应力场分析，、原岩应力现场实测及区域原岩应力场反演计算等。     

黄甲堡井田古构造应力场的恢复与研究

通过大量的地表及井下节理测量资料，借助计算机极密统计方法，对控制该矿地质构造的古构造应力场做了较全面的分析与研究，首次恢复了该矿自中生代以来的3期构造应力场，并在此基础上，详细分析了该矿各类构造的形成机制。研究结论对该矿及邻矿未开拓区的矿井构造预测有重要的指导意叉，对轩岗矿区区域应力扬演变史的研究也有一定参考价值。     

冬瓜山矿区原岩应力场的初步研究

本文讨论在冬瓜山矿区进行原岩应力场初步研究的方法及结果，主要包括矿区构造应力场分析、原岩应力现场实测及区域原岩应力场反演计算等。     

构造应力场对深井巷道围岩稳定的影响

为了研究构造应力场对深井巷道围岩稳定的影响，运用3D-σ有限元计算软件对深井巷道在构造应力场中不同布置方向的稳定性进行了数值模拟分析，分析得出随着巷道轴向与构造应力场方向夹角的增大，巷道围岩受力状况逐渐趋于恶化。对此，提出在布置巷道时，尽可能使巷道轴线方向与最大水平主应力方向以小角度相交(最好趋于一致)，并采用宽度大于高度的矩形、拱形或椭圆形断面，使断面形状与构造应力状态相适应。     

刘桥矿区多期构造复合断层导水性分析

在分析刘桥矿区构造展布特点的基础上，利用统计方法，石英光轴组构分析及地应力测试数据对矿区应力场进行系统研究，揭示了该区地质构造展布规律，并讨论了各期次构造在本区的复合机制及其对断裂构造导水性的影响。     

构造应力场数值模拟方法

构造应力场的数值模拟是地质动力区划方法的重要组成部分，为此，本文开发了两个程序、一个是有限元程序。用于水平剖面应力计算。一个是边界元程序，用于铅直剖面应力计算，在中俄专家用地形图等综合方法确定出的矿区断块系统及最大主应力方向的基础上，对东北某矿区构造应力场进行了数值模拟，划分出了高应力区。     

矿区原岩应力场的测定与研究

结合矿区特点，提出了在矿区进行地应力场测定与研究的方法，主要包括矿区构造应力场的分析方法、测点数量的确定与测点布局，地应力测量方法的选择、测定结果的整理与评述、矿区原岩应力场的反演计算等。     

关于残余构造应力及其与煤和瓦斯突出关系的几点看法

残余构适应力的确切概念及其对煤和瓦斯突出的影响有着不同的认识。本文首先明确定义了残余构造应力的概念，然后又从多方面论证了它在现今地应力场中所起的作用甚微，对煤和瓦斯突出几乎没有影响。古构造应力场与现今构造应力场可能一致．也可能不一致，它们之间无直接关系。古今构造应力场的演化是控制煤和瓦斯突出的决定性因素。     

构造应力场数值模拟方法

构造应力场的数值模拟是地质动力区划方法的重要组成部分。为此．本文开发了两个程序，一个是有限元程序，用于水平剖面应力计算，一个是边界元程序。用于铅直剖面应力计算。在中俄专家用地形图等综合方法确定出的矿区断块系统及最大主应力方向的基础上，对东北某矿区构造应力场进行了数值模拟，划分出了高应力区     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。