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《矿业研究与开发》2016,(6)
针对岩土工程软件FLAC3D在复杂模型构建及单元网格加密中存在的不足,提出了一种基于AutoCAD和DIMINE软件建立复杂三维地质模型的直观、快速的模型生成技术,可有效降低FLAC3D中复杂网格模型建立的难度。DIMINE软件具有强大的三维可视性,在图形与网格划分功能中优点突出,可实现复杂模型的快速构建,并经相应程序转化为满足要求的FLAC3D文件,再将模型导入到FLAC3D中进行模拟计算,最后结合工程实例,模拟分析矿山地下开采对山体边坡稳定性的影响。结果表明:该建模方法能精确建立复杂三维地质模型,并实现模型中任意剖面的提取,可为数值模拟计算提供依据,为复杂地质三维模型的构建提供了一种全新的建模方法。 相似文献
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FLAC3D在地下复杂地质体实体建模及网格划分方面存在弊端。通过AutoCAD进行三维建模,将生成的AutoCAD图导入ANSYS中,可实现ANSYS的快速建模;应用ANSYS有限元程序可以快速便捷地进行网格划分,将划分后的网格文件利用ANSYS_TO_FLAC3D接口程序将其转换为FLAC3D可识别的FLAC文件。最后FLAC3D调用FLAC文件,从而实现复杂地质体的建模。详细阐述了AutoCAD、ANSYS在FLAC3D建模中的作用,并结合工程实例,验证其可行性和有效性。 相似文献
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借助通用有限元软件ANSYS在复杂网格模型建立方面的优势,通过开发的数据接口软件,实现了复杂地质体网格模型在ANSYS中建立并导入FLAC3D中的目的,有效降低了FLAC3D复杂网格模型建立的难度.采用该方法建模时,先通过地质建模软件GOCAD获取等高线的三维坐标数据,然后将这些数据输入图形处理软件SURFER整理后输出为等间距的点坐标,接着采用这些点在ANSYS中生成等间距样条曲线并最终建立实体模型并网格剖分,尔后通过接口程序将ANSYS中的网格模型导入FLAC3D以实现复杂岩土工程的计算分析.最后以西南某一水电站厂房边坡网格模型的建立为例,说明了该方法既实用又高效. 相似文献
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由于FLAC3D软件在复杂的三维地质建模与单元网格划分等方面存在很多不足,且所建模型易出错、难检查。利用3DMine软件建立柿竹园多金属矿的三维地质体块体模型,并用八叉树法实现了单元块的合并与细分。将模型以数据文件的形式输出,形成FLAC3D命令流,再将命令流调入FLAC3D软件中执行,从而准确、快速的建立了FLAC3D模型。利用该建模方法对采空区和露天边坡之间的相互影响进行了模拟分析,验证了两种软件耦合的可行性和有效性。 相似文献
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基于FLAC3D数值模拟的前后处理优化研究 总被引:3,自引:0,他引:3
FLAC3D在求解岩土工程问题方面具有许多优越性,但其在前处理(建模与网格划分)和后处理(图形结果输出)方面却存在着明显不足。对此,提出了首先利用具有强大图形与网格划分功能的ANSYS软件来实现复杂模型构建,然后通过相应程序将模型导入到FLAC3D中进行模拟计算,最后将计算结果导入到tecplot软件中进行后处理分析,用等值线来替代FLAC3D中的区域颜色,以实现结果的直观化操作流程。通过对某矿采场的建模和模拟计算,验证了该方法的优越性和可行性。 相似文献
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<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 相似文献
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《中国稀土信息(英文版)》2014,(6)
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 相似文献
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YANG Li 《中国稀土信息(英文版)》2014,(6)
<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 相似文献
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Gao Wei 《中国稀土信息(英文版)》2014,(11)
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 相似文献
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《中国稀土信息(英文版)》2014,(8)
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 相似文献
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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。 相似文献
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Chen Zhanheng 《中国稀土信息(英文版)》2014,(5)
<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 相似文献
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Bai Wenping 《中国稀土信息(英文版)》2014,(12)
<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 相似文献
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《中国稀土信息(英文版)》2014,(9)
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 相似文献
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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。 相似文献