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杨东晓 《中国非金属矿工业导刊》2012,(1):38-42
南阳独山玉是中国四大名玉之一,矿床产于次闪石化辉长岩体内。本文在野外工作的基础上,通过对矿床地质特征的总结,研究了玉化带、玉脉密集体、玉脉的分布特征和规律,划分了五种玉脉类型。初步探讨了矿床成因,提出了岩浆分异作用、动力变质作用、热液蚀变是成矿的主要地质作用。 相似文献
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为准确捕捉矿山地质与环境情况,提出无人机倾斜摄影技术在矿山地质勘查中的应用。以河南省某石灰岩矿山区域作为研究对象,通过搭载四镜头倾斜相机的多旋翼无人机,采集研究区域的矿山地质数据。运用Photoscan软件处理矿山地质图像数据,生成密集点云以及研究区域地物剖面线。将剖面线导入3D Mine软件中,构建研究区域的三维模型,反映矿山地质情况与问题,实现矿山地质勘查。实验结果表明,该方法能够准确捕捉矿山地质与环境情况,且所勘查结果与实际环境结果吻合,勘查准确性较高。 相似文献
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In the pursuit of online, data-driven process control, there is a need to determine the quality of the data being processed before actually using it. One area that needs to be considered is data quantisation. Although in many applications it has been assumed that the impact of quantisation is to solely increase the variance of the signal, in certain cases this may not hold. This is especially the case when dealing with signals from poorly quantised sources, such as temperature sensors. In this case, the effect of quantisation cannot be solely considered by the impact of the increase in the variance. Therefore, this paper will examine the effects of small scale quantisation with the view of determining an appropriate metric for measuring the effect on data quality of quantisation. It will be shown that if the ratio of the unquantised signal variance and the distance between quantisation step sizes are below a given threshold, then the identification of the process parameters will be problematic. Detailed numerical simulations as well as an example drawn from a real system are presented to validate the proposed metrics and approach. 相似文献
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为了研究香春沟(石英脉型)钼矿成因,进一步为矿床勘查、开发提供技术积累,通过对香春沟钼矿矿体地质特征、矿石质量特征进行分析,认为矿体形成受构造控制,成矿物质来源为熊耳群地层,并与燕山期岩浆活动关系密切;通过研究矿石选(冶)加工技术性能,查明了主要目的元素钼的赋存状态,回收利用的工艺流程、选矿指标、采选矿经济效益等。研究认为,该矿区矿石可以实现经济选矿回收,最终推荐流程为钼铅混合浮选流程。 相似文献
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四平山岩金矿床为典型的热泉型金矿床,具有重要经济价值和理论研究意义。在两次找矿成果的研究基础上,对热液通道、矿床成矿规律、找矿远景等方面,进行了深层次的分析探讨。研究认为,该区金矿化主要与酸性火山岩有关,深部火山通道和张性断裂及构造交汇处的热泉通道是寻找热泉型金矿床的重要远景区。 相似文献