采空区三维激光扫描系统C-ALS及其在安庆铜矿的应用

三维激光扫描是集光、机、电和计算机技术于一体的高新技术,随着三维激光扫描技术的发展,采空区三维激光扫描系统正日益显示出其优越性。在对C-ALS和CMS系统进行技术参数对比的基础上,总结了C-ALS系统的应用优势,进一步研究了其在建立采空区数据库、矿柱回采爆破优化设计、损失贫化率精确计算、钻孔测斜等方面的应用。在建立安庆铜矿某空区三维模型后,计算空区体积,为矿山采空区充填设计提供重要依据。     

基于C-ALS三维激光扫描的深埋隐蔽采空区空间形态探测与治理

深埋隐蔽采空区严重制约大宝山矿业公司安全生产.采用C-ALS空区自动激光扫描系统对大宝山矿隐蔽采空区进行探测,并根据所获得的采空区三维参数对采空区矿体开采进行指导.C-ALS空区自动激光扫描系统有效解决此类空区空间形态探测的难题,精确获取隐蔽采空区三维参数,该系统自2012年运行以来,共探测空区161个,空区体积10.86万m3.最后,利用崩落顶板处理技术对采空区进行处理,消除安全事故.     

三维激光扫描系统在平朔东露天矿采空区探测中的应用

为了精确查明空区形态、体积及边界条件等,首次引进C-ALS钻孔式三维激光扫描系统对该矿区进行了全面探测。实践证明,将C-ALS钻孔式三维激光扫描系统引入露天煤矿地下采空区探测,不但可实时地、科学地及合理地指导采空区探测钻孔施工,提高采空区探测效率,而且可以提高采空区安全性评价的准确性,节约了生产成本,有效避免了露天煤矿采空区坍塌事故的发生,对于指导露天煤矿的安全作业具有及其重要的意义。     

基于C-ALS的三维激光扫描技术在采空区探测中的应用

进行精确的采空区探测是进行采空区稳定性分析和治理的前提。基于三维激光扫描探测技术,采用采空区探测系统C-ALS对雅满苏地下矿采空区形态进行精确探测,建立了可视化采空区三维实测模型,获取了采空区三维形态、空间位置、空区体积、顶板暴露面积等关键信息。根据三维激光探测结果,结合3DMine矿业软件耦合建立了完整矿区现状三维模型。实践表明该探测系统能够对地下空区进行精确的全方位扫描,操作简单、安全,探测结果可为下一步采空区稳定性分析和处理方案的确定提供重要依据。     

激光扫描系统在煤矿火区治理中的应用

通过施工地面钻孔和灌注防灭火材料,采用C-ALS钻孔式三维激光扫描系统对板定梁塔煤矿井田边界的房柱式采空区进行了探测。结果表明:三维激光扫描系统查明了采空区的冒落空间、体积及边界等参数,能观察到钻孔的成孔效果,不但可以科学和实时地指导煤矿火区治理过程中钻孔的布置,而且能够预估出采空区钻孔的注浆量,节约了工程成本,保证了火区隔离墙的成功建立。     

露天矿采空区激光三维探测应用研究

阐述了C-ALS钻孔式三维激光扫描系统的工作原理、操作步骤、数据处理方式,并以国内某露天煤矿采空区激光三维探测项目为背景,举例说明三维激光扫描技术在露天矿安全生产中的作用。实践表明,激光三维探测方法是目前比较有效的采空区探测方法,通过扫描可以准确实现隐蔽采空区的可视化,为露天矿采空区治理提供了可靠的基础数据。     

基于C-ALS实测的采空区三维建模技术及工程应用研究

3D激光探测法是目前国际上一种新型空区探测方法。采用先进的空区探测系统(C-ALS)对金属矿山形成的采空区进行精密探测,在此基础上,运用大型矿山建模软件Surpac建立采空区三维模型,并得到空区的形状、空间位置、体积大小。通过对模型的后期处理与应用,从采场周边超挖量、顶板冒落、矿柱垮塌量及回采贫化率指标的计算角度研究了采场回采效果,为采矿技术人员对地下空区的后续分析和处理提供了可靠的科学依据。     

无人机三维激光扫描技术在地下采空区探测中的应用研究

传统采空区三维激光扫描技术受限于空区的复杂形态与探测作业环境,容易导致采空区探测数据不完整,无法精确获得采空区空间形态。为提高采空区三维激光扫描探测的可靠性,基于一种无人机平台搭载便携式三维激光扫描仪的飞行探测设备,开展无人机三维激光扫描技术在采空区探测中的应用研究。简述了无人机三维激光扫描的作业原理与优势,并在大红山铁矿进行了无人机三维激光扫描技术的空区探测应用。最后分析讨论了无人机三维扫描技术在采空区探测中的应用难点与挑战。结果表明：通过无人机三维激光扫描探测,使大红山铁矿Ⅱ1 矿体 775-1 采空区的点云数据更全面、更精确。无人机三维激光扫描技术可为采空区精确探测提供一种新手段。     

无人机三维激光扫描技术在地下采空区探测中的应用研究

传统采空区三维激光扫描技术受限于空区的复杂形态与探测作业环境,容易导致采空区探测数据不完整,无法精确获得采空区空间形态。为提高采空区三维激光扫描探测的可靠性,基于一种无人机平台搭载便携式三维激光扫描仪的飞行探测设备,开展无人机三维激光扫描技术在采空区探测中的应用研究。简述了无人机三维激光扫描的作业原理与优势,并在大红山铁矿进行了无人机三维激光扫描技术的空区探测应用。最后分析讨论了无人机三维扫描技术在采空区探测中的应用难点与挑战。结果表明：通过无人机三维激光扫描探测,使大红山铁矿Ⅱ1 矿体 775-1 采空区的点云数据更全面、更精确。无人机三维激光扫描技术可为采空区精确探测提供一种新手段。     

基于C-ALS实测的采空区稳定性数值分析

采用C-ALS对地下采空区进行探测,准确获取采空区三维形状及空间位置,应用建模软件Surpac构建空区地质模型.在此基础上,利用数据耦合在FLAC3D生成高仿真力学模型,有效提高了采空区稳定性分析的准确性和可靠性.通过井水寨萤石矿采空区稳定性数值模拟分析实践,对井水寨萤石矿+120m水平西区空区进行静力计算,分析空区稳定性,为矿山安全生产提供科学的建议措施.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

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