共查询到20条相似文献,搜索用时 46 毫秒
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传统的矿区地表变形监测获取数据量少、监测周期长、效率不高;结合LiDAR及RTK技术应用到煤矿区地表沉陷监测工作中,进行外业数据采集与内业数据处理,对得到的点云数据和生成的DEM进行煤矿区沉降变形分析,并以贵州某煤矿区为例进行了地表沉陷监测试验,满足精度要求,验证了该方法的可行性。 相似文献
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煤与瓦斯突出作为一种在煤矿生产中最为常见的自然灾害之一,直接威胁着生产者的安全.所以有效地对煤与瓦斯突出区域进行预测是提高煤矿安全生产水平的一个前提.本文利用主流的ArcEngine组件实现一个概念模型,通过对矿井采集的相关数据进行插值分析和多因子叠加,完成对危险区域的预测,提高了预测的准确度和可视化效果. 相似文献
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煤矿测量信息管理系统的开发与研究杜明清谢拂晓(鹤壁矿务局四矿458000)随着计算机在煤矿测量领域的普及,缺少方便实用的测量软件一直是计算机在测量领域推广应用的瓶颈。为此我们对煤矿常用的导线测量计算、导线误差预计、落地煤量计算、测量业务保安、坐标正反... 相似文献
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基于多尺度分割的煤矿区典型地物遥感信息提取 总被引:1,自引:0,他引:1
根据煤矿区典型地物类型的特点,研究遥感影像信息提取时面向对象分类方法的最优分割尺度问题。试验结果表明:在适于不同地物提取的最优分割尺度下,充分利用煤矿区影像对象的光谱、形状、纹理以及类间相关等特征,并综合应用隶属函数法和最邻近分类法,能有效地提取出煤矿区地物信息,与最大似然分类法相比,能够较好地消除"椒盐现象",其总体分类精度可提高26.2%。 相似文献
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黑龙江省矿集区尾矿库遥感监测与分析 总被引:5,自引:0,他引:5
尾矿库是一个具有高势能的人造泥石流危险源,存在溃坝危险,一旦失事,容易造成重大或特大事故。尾矿库不仅占据了大量的土地资源、破坏土地植被,给环境安全带来隐患,同时尾矿中含有的各种重金属矿物和毒性物质经过淋滤和渗透,会严重污染尾矿库周边和下游的生态环境。为实现对尾矿库的遥感监测与分析,以黑龙江省重点矿集区尾矿库为研究对象,利用高分辨率遥感图像建立准确的遥感解译标志,对尾矿库进行遥感解译;利用GIS软件提取尾矿库的相关信息,摸清现有尾矿的基本类型、堆存数量、地理位置和有害因素等;同时了解和掌握尾矿堆放区的环境地质情况和生态状况,以期为尾矿库的监督和管理提供科学依据。 相似文献
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Radiant temperature images from thermal remote sensing sensors are used to delineate surface coal fires, by deriving a cut-off temperature to separate coal-fire from non-fire pixels. Temperature contrast of coal fire and background elements (rocks and vegetation etc.) controls this cut-off temperature. This contrast varies across the coal field, as it is influenced by variability of associated rock types, proportion of vegetation cover and intensity of coal fires etc. We have delineated coal fires from background, based on separation in data clusters in maximum v/s mean radiant temperature (13th band of ASTER and 10th band of Landsat-8) scatter-plot, derived using randomly distributed homogeneous pixel-blocks (9 × 9 pixels for ASTER and 27 × 27 pixels for Landsat-8), covering the entire coal bearing geological formation. It is seen that, for both the datasets, overall temperature variability of background and fires can be addressed using this regional cut-off. However, the summer time ASTER data could not delineate fire pixels for one specific mine (Bhulanbararee) as opposed to the winter time Landsat-8 data. The contrast of radiant temperature of fire and background terrain elements, specific to this mine, is different from the regional contrast of fire and background, during summer. This is due to the higher solar heating of background rocky outcrops, thus, reducing their temperature contrast with fire. The specific cut-off temperature determined for this mine, to extract this fire, differs from the regional cut-off. This is derived by reducing the pixel-block size of the temperature data. It is seen that, summer-time ASTER image is useful for fire detection but required additional processing to determine a local threshold, along with the regional threshold to capture all the fires. However, the winter Landsat-8 data was better for fire detection with a regional threshold. 相似文献
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煤层地质空间三维建模及空间分析方法的研究已成为助力数字矿山、智能矿山建设与发展的研究热点.论文将煤层与对其开采过程中常涉及的自然实体(如地层、断层)、人工实体(如巷道)等多种类型的三维实体及其所占有的三维空间定义为煤层地质空间.三维地质建模技术可以构建科学的地质空间的几何及拓扑,为地下资源分布与工程构筑物的直观可视化和资源开发决策提供保障. 相似文献
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In coal mining areas, ground subsidence persistently happens, which produces serious environmental issues and affects the development of cities. To monitor the ground deformation due to coal mining, a modified time-series InSAR technique combining persistent scatterers (PSs) and distributed scatterers (DSs) is presented in this paper. In particular, DSs are efficiently identified using classified information and statistical characteristics. Furthermore, a two-scale network is introduced into traditional PSI to deal with PSs and DSs in a multi-layer framework by taking the advantage of the robust of PSs and the widely distribution of DSs. The proposed method is performed to investigate the subsidence of Huainan City, Anhui province (China), during 2012–2013 using 14 scenes of Radarsat-2 images. Experimental results show that the proposed method can ease the estimation complexity and significantly increase the spatial density of measurement points, which can provide more detailed deformation information. Result shows that there are obvious subsidence areas detected in the test site with subsidence velocity larger than 5 cm/year. The proposed method brings practical applications for non-urban area deformation monitoring. 相似文献