共查询到18条相似文献，搜索用时 187 毫秒
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李佳赫 《测绘与空间地理信息》2019,42(7)
为了建立多层DEM矿体模型,实现矿体逼真的三维可视化,使矿体的体积和土方量计算更为准确,利用宝日希勒露天矿钻孔数据,建立钻孔数据库,并对建模方法进行分析和研究,选择基于不规则三角网的层面建模方法,通过逐点插入法建立各个层面三角网,采用局部法对断层进行处理,按照矿体的空间顺序建立矿床实体模型,在建立宝日希勒露天矿体层面模型的基础上,采用C#和AE技术,实现钻孔数据的查询、放大、缩小等功能。 相似文献
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露天矿采场开采随着采掘工作的进展,露天矿中大部分的地形、地貌经常性地变化;而设在露天矿采场上的测量工作控制点经常被破坏。为了满足露天矿采场开采过程中对测量工作的要求;采用全站仪自由设站法,完善了露天矿采场掘进、施工放样,需要不断的补设测量工作控制点的应用;摸索出一种全站仪自由设站法应用于露天矿采场开采过程中建立工作控制点的方法;进行了理论上和实践上的试验,达到了预期精度效果,解决了全站仪自由设站法在露天矿采场进行测量工作控制点补充的测量方法问题。 相似文献
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以某露天矿边坡为研究对象,通过无人机对边坡低空摄影测量快速获取大量地形影像数据,基于SFM-MVS算法建立边坡高精度数字高程模型;基于Monte-Carlo理论构建能充分反映岩体节理分布特征的随机节理网络;最终通过3DEC软件建立等效边坡数值模型,采用强度折减法进行边坡稳定性分析,实现了含节理岩质边坡模型的快速准确建立。该研究发挥了无人机摄影测量高效、便捷、高精度获取地形信息的优势,结合现场节理测量,快速建立三维等效边坡模型,实现边坡稳定性及时、快速、准确的分析,研究成果对复杂工况下露天矿边坡稳定性分析具有重要的科学意义和应用价值。 相似文献
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动态矿区DEM生成方法及其在土地复垦中的应用研究 总被引：2，自引：1，他引：1
首先根据我国矿区土地复垦工作中存在的不足,通过研究提出"动态土地复垦"的概念,并确定了动态土地复垦方案制定的数据基础——动态矿区数字高程模型。动态矿区数字高程模型应该包含煤矿生产对地表的累积影响结果数据和地表的原始地形信息,开采沉陷预计结果可以提供前者,地面测量可以提供后者,经过数据处理可以按时间间隔生成描述塌陷区的一系列数字高程模型(DEM)(准动态),然后运用DEM的空间分析技术提取塌陷区在不同时间段的土地破坏类型、范围和位置数据,并根据这些数据进行动态土地复垦方案决策数据的提取,经实例验证该方法可行。 相似文献
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无人机在露天矿山监测中的应用 总被引：3，自引：0，他引：3
在露天矿山开采过程中，对矿山进行实时动态监测很有必要，它不仅能够实时掌握开采进度和开采方案实施的准确性，还有利于数字矿山建设。本文以河北省保定市涞源县某露天矿区为例，利用Pix4Dmapper软件对无人机航拍影像进行数据采集与处理，获取矿区的三维点云数据、数字正射影像和数字地表模型，并利用ArcGIS和Global Mapper软件对生产成果进行矿山开发占地分析，实现露天矿山三维可视化。本文为准确掌握矿山环境治理执行情况，把握矿山开发整体情况给予了有力的参考和借鉴作用。 相似文献
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露天矿卡车调度系统关键技术研究 总被引：1，自引：0，他引：1
董红娟 《测绘与空间地理信息》2011,34(1):43-45
随着露天矿产量规模的不断扩大及设备大型化、机械化、自动化程度的不断提高,采运成本占矿山生产成本的比例也越来越高,优化车队运行、准确执行生产计划,以提高矿山产量,节约费用,取得较高经济效益显得尤为重要。露天矿卡车调度系统是集GPS定位技术、GPRS通信技术、GIS管理技术、运筹学以及优化理论于一身的综合系统。本文主要研究了该系统的构成以及设计该系统所需要的关键性技术问题,并提出了相应的解决方法。 相似文献
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《International Journal of Digital Earth》2013,6(5):449-468
Abstract To investigate geological mining hazards using digital techniques such as high-resolution remote sensing, a semi-automatically geological mining hazards extraction method is proposed based on the case of the Shijiaying coal mine, located in Fangshan District, Beijing, China. In the method, the vegetation is first removed using the normalized difference vegetation index (NDVI) on the GeoEye-1 data. Then, geological mining hazards interpretation features are determined after color enhancement using principal component analysis (PCA) transformation. Bitmaps mainly covered by geological mining hazards are isolated by masking operation in the environment for visualizing images software. Next, each bitmap is classified into a two-valued imagery using support vector machine algorithm. In the two-valued imagery, 1 denotes the geological mining hazards, while 0 denotes none. Afterwards, the two-valued imagery is converted into a vector graph by corresponding functions in the ArcGIS software and no geological mining hazards regions in the vector graph are deleted manually. Finally, the correlation between factors (such as mining activity, lithology, geological structure, and slope) and geological mining hazards is analyzed using a logistic regression and a hazardous-area forecasting model is built. The results of field verification show that the accuracy of the geological mining hazards extraction method is 98.1% and the results of the hazardous-area forecasting indicate that the logistic regression is an effective model in assessing geological hazard risks and that mining activity is the main contributing factor to the hazards, while geological structure, slope, lithology, roughness of the surface, and aspect are the secondary. 相似文献
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地矿数据的质量、数量和更新时效已成为衡量一个国家地质调查工作水准和社会化服务水平的基础标准之一,大数据时代下信息技术的飞速发展推动了地矿行业的数据资源共享和信息化服务水平的提高,但是,地矿行业属于传统行业,信息化水平不高、智能化水平更是欠缺。本文从地矿数据资源如何服务于经济社会发展进行探讨,重点论述了四大关键技术:1)地上、地下一体化的三维地质支撑软件;2)多源、多尺度空间数据融合;3)基于时空数据模型的地质大数据管理;4)多主题数据仓库构建和基于数据仓库的联机时空数据挖掘。 相似文献
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With the recent progress in synthetic aperture radar (SAR) technology, especially the new generation of SAR satellites (Sentinel-1 and TerraSAR-X), our ability to assess slope stability in open-pit mines has significantly improved. The main objective of this work is to map ground displacement and slope instability over three open-pit mines, namely, Hambach, Garzweiler and Inden, in the Rhenish coalfields of Germany to provide long-term monitoring solutions for open-pit mining operations and their surroundings. Three SAR datasets, including Sentinel-1A data in ascending and descending orbits and TerraSAR-X data in a descending orbit, were processed by a modified small baseline subset (SBAS) algorithm, called coherence-based SBAS, to retrieve ground displacement related to the three open-pit mines and their surroundings. Despite the continuously changing topography over these active open-pit mines, the small perpendicular baselines of both Sentinel-1A and TerraSAR-X data were not affected by DEM errors and hence could yield accurate estimates of surface displacement. Significant land subsidence was observed over reclaimed areas, with rates exceeding 500 mm/yr, 380 mm/yr, and 310 mm/yr for the Hambach, Garzweiler and Inden mine, respectively. The compaction process of waste materials is the main contributor to land subsidence. Land uplift was found over the areas near the active working parts of the mines, which was probably due to excavation activities. Horizontal displacement retrieved from the combination of ascending and descending data was analysed, revealing an eastward movement with a maximum rate of ∼120 mm/yr on the western flank and a westward movement with a maximum rate of ∼ 60 mm/yr on the eastern flank of the pit. Former open-pit mines Fortuna-Garsdorf and Berghein in the eastern part of Rhenish coalfields, already reclaimed for agriculture, also show subsidence, at locations reaching 150 mm/yr. The interferometric results were compared, whenever possible, with groundwater information to analyse the possible reasons for ground deformation over the mines and their surroundings. 相似文献