不动产档案扫描建库技术管理的创新

以不动产数据整合成果利用为切入点,分析了不动产档案扫描与建库工作的必要性,进而提出了不动产档案扫描建库的优化流程与配套管理制度,解决了档案规范化整理、成果质量控制、工作量统计、绩效策略优化等方面的问题,同时总结了档案建库的关键技术,以提高档案扫描建库的质量.事实证明,该方法能有效降低管理难度和减少人力投入,同时提高工作...     

三维激光扫描技术在马钢桃冲矿塌陷区中的应用

三维激光影像扫描测绘主要利用激光束扫描获取物体的方位信息和影像信息(点云),通过软件处理快速获取绝对坐标系下的高精度三维数据。以马钢桃冲矿塌陷区为例,对三维激光影像扫描测量原理以及数据采集的基本流程进行了讨论,为矿山塌陷区的测绘工作提供参考。     

声发射及CT在煤岩体裂纹扩展实验中的应用进展

声发射技术和CT扫描技术是监测煤岩体裂纹扩展的重要手段。概述了声发射及CT扫描实验在煤岩体领域的发展历程和应用现状。结合声发射技术与CT扫描实验的优点,提出声发射与CT相结合进行煤岩体实验的研究方向,以便于有效结合煤岩体内部裂纹变化情况进行煤岩体裂纹扩展机理的研究,为进一步研究煤矿冲击地压的发生机理提供理论依据。     

地形图矢量化的精度评定

数字地形图是构成国家地理信息系统的基本构架，也是各种工程建设、城乡规划、建设工程勘察设计不可缺少的基础技术资料，其精度将直接影响到工程设计及施工质量。将原有手工绘制的地形图扫描矢量化变成数字地形图后存在各种误差，分析地形图扫描矢量化的误差精度，目的在于提高数字地形图的质量，从而保证满足经济建设的需要，使各项地理信息系统工程更为可靠。现以河南汝州市地形图扫描矢量化项目为例对地形图扫描矢量化的误差来源进行系统分析。     

新疆某地下矿采空区三维激光扫描技术应用实践

以新疆某地下矿山为例，采用三维激光扫描技术进行了扫描并估算了该矿五、六中段二步骤矿房体积约为210 511.338 m3。研究表明：采用三维激光扫描技术进行采空区扫描和二步骤矿房体积估算具有可行性。     

管道缺陷超声自动成像研究

以管道为研究对象,设计了一种基于LabWindows/CVI的超声自动成像系统。该系统通过TCP/IP协议实现了计算机与探伤仪的网络通讯和超声数据传输,通过RS232实现了管道自动检测装置B扫描运动控制,建立了斜探头B扫描成像数学模型,并采用小波变换对超声信号进行滤波。     

岩芯多参数信息提取与应用研究:以西藏甲玛铜多金属矿为例

随着科技的发展,在不破坏岩芯的前提下,采用无损扫描分析等手段,也能获取岩芯内部蕴含的定性、半定量甚至定量数据,为解决成因矿物学、矿物蚀变填图、热液成矿体系环境判定、矿床成矿模式建立等问题提供证据支持。本文以西藏甲玛铜多金属矿岩芯为例,采用白光扫描、高光谱扫描、XRF扫描和CT扫描等技术手段提取岩芯的图像、矿物组成、元素浓度和内部结构构造等多参数信息,研究岩芯多参数信息提取在找矿勘查过程中的应用价值,为珍贵岩芯的保管与利用提供范例,为今后提高岩芯在地质找矿、科研等工作中的利用价值提供参考和建议。     

普朗铜矿采区溜井精细化扫描及建模技术

针对目前溜井使用过程中频繁出现垮塌、处置较为困难的现状,开展了基于BLSS-PE矿用三维激光扫描系统的溜井精细扫描及高精度建模技术研究,确定了采用分高程垂直下放扫描、实时数据分析以及高精度距离控制相结合的精细化扫描方式以及以BLSS-PE数据处理软件和Geomagic逆向工程软件为核心的高精度建模手段,得到了溜井的高精度三维模型,为其体积计算、垮塌边界分析以及稳定性评价提供了基础数据,从而为矿山安全生产奠定了基础。     

地下空间三维激光扫描智能化成像系统

本文针对矿山地下空间形态扫描的需要,提出了一种三维激光扫描智能化成像系统,重点攻克了三维激光扫描系统中防护、自适应扫描、点云数据拼接等技术难题。为了验证整个系统在地下空间形态扫描的适应性,选择安庆某矿山进行试验,试验结果表明三维激光扫描仪系统完全能够胜任地下空间形态扫描的需要,同时自适应扫描方式相对于常规的扫描方式更加具有优势。     

地下空间三维激光扫描双轴同步插补算法研究

本文以BLSS-PE矿用三维激光扫描测量系统为基础,研究了一种双轴同步插补运动控制算法,该算法可以使扫描系统在地下空间扫描过程中,运行出任意轨迹,准确的获取地下空间形态。在某矿山进行的大量实验证明,对于不同的地下空间环境,双轴同步插补运动控制算法具有很强的适应性。     

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。