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通~南~巴地区属典型的大山区,在该区开展三维地震资料采集工作,其采集资料的品质主要受到工区地形、激发岩性、断裂发育情况,以及激发井组合形式等多方面的影响.通过对通~南~巴大山区的三维采集资料品质进行分析,对影响通~南~巴大山区三维采集资料品质的各种因素,进行了认真分析和总结,并对如何消除这些影响提出了针对性的技术措施.这将对提高类似地区的三维采集资料品质具有一定的借鉴意义. 相似文献
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《物探化探计算技术》2015,(2)
同步震源地震采集技术,因其任意两个震源之间激发时间的间隔不受任何门限值的制约,可以进行同步激发,与常规采集技术相比,在相近的时间内能够采集到更多的地震记录,从而大大缩短了采集周期,提高采集效益,是近年来国外发展最快的高效采集技术。这里首先介绍了该技术的发展现状,其次以独立同步扫描(ISS)、距离分开同步扫描(DSSS)、HPVA和V1等同步可控震源特色采集技术为例,从其勘探设计出发,结合各自的采集技术、数据分离技术以及野外测试情况进行了介绍,最后对各种高效采集技术的优势进行了对比总结。 相似文献
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利用GPS手持机对地质观察点进行坐标数据的采集,通过GPS手持机应用软件(GISOffice、MapSource)将所采集的原始数据传输保存到电脑中,使用Microsoft Office办公软件(Access、Excel)对数据进行整理、应用,或存贮、共享应用于其他地质资料整理. 相似文献
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野外地震资料采集是地震勘探的基础和质量的基本保证。文章对大量试验资料进行了的详细分析, 证明利用现有的高分辨率地震采集设备, 通过改善资料采集的各种激发、接收因素来进一步提高分辨率,是完全可以实现的,同时为今后的资料采集工作提供了许多经验和方法。 相似文献
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针对煤矿井下具有地质条件复杂、干扰大的特点,对井下瞬态瑞雷波勘探资料采集和解释若干问题进行了研究。经过大量的现场实验给出了合适的采集参数。通过对记录进行零漂校正、F-K滤波、切除等预处理方法,提高了瞬态瑞雷波勘探的精度和深度。 相似文献
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无人机遥感系统在国土资源执法监察中的应用研究 总被引:2,自引:0,他引:2
无人机遥感系统是一种新型的高分辨率影像数据快速获取方式,具有高效快速、精细准确、作业成本低等特点。本文介绍了无人机遥感系统的组成、特点,设计了无人机遥感系统在国土资源执法监察中应用的技术流程,并以芜湖县湾沚镇为航摄区域进行实例验证分析。通过遥感影像的几何校正、空三加密、图像拼接和数据精度分析等数据预处理,套合比对2011年度的卫星影像数据和第二次土地调查的土地利用现状数据库,对国土资源执法监察区域的土地利用变化情况进行了初步评价,取得了较好的效果。 相似文献
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Ramesh Sivanpillai X. Ben Wu R. Srinivasan Charles T. Smith Michael G. Messina 《GeoJournal》2008,71(4):211-220
Comparing satellite data derived map products are affected by differences in data characteristics, image acquisition dates,
processing techniques, and classification schemes used for assigning pixels to a thematic class. By comparing two forest maps
generated from Landsat Enhanced Thematic Mapper Plus (ETM+) and Advanced Very High Resolution Radiometer (AVHRR) images acquired
on the same day, and processed using identical classification scheme and methods these differences were minimized. The ETM+
derived map had higher classification accuracy values and more precise area estimates than the AVHRR derived map. In the ETM+
derived map, 87 of the 599 verification data were misclassified, whereas in the AVHRR derived map, 155 of the 469 verification
data were misclassified. Detailed error analyses by land cover class revealed that a land use based definition of forest accounted
for 74% (64 out of 87) and 57% (89 out of 155) of the classification errors in ETM+ and AVHRR derived maps, respectively. 相似文献
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遥感技术在新一轮国土资源大调查中的进展与作用 总被引:6,自引:2,他引:4
随着现代科学技术的飞速发展,遥感技术的应用领域越来越广泛,特别是在国土资源的本底调查、环境评价和科学规划等研究应用中,已成为空间多源信息获取的有力手段,为在国民经济发展中合理开发利用自然资源提供了科学的数据源和信息服务。作者在本文中就近年来遥感技术在遥感数据获取、遥感图像信息提取与分析等方面的进展作了简要阐述,并针对新一轮国土资源大调查的性质和任务,探讨了遥感、地理信息系统在新一轮国土资源大调查中的作用。 相似文献
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A monitoring framework for land use around kaolin mining areas through Landsat TM images 总被引:1,自引:1,他引:0
Sustainable management of land requires regular acquisition of qualitative information regarding the status of its use. It is especially important to track the changes relating to the land’s competitive development needs such as mining. The field-based monitoring of a mine with a wide footprint is expensive and time-consuming. Remote sensing techniques have been developed and demonstrated as cost-effective alternatives for the conventional methods of land use/land cover (LULC) monitoring. In this study, the land cover changes that occurred between the year of 2000 and 2009 in a kaolin mining and processing area in the Kutch region of India are mapped using two Landsat-5 Thematic Mapper (TM) images. For this purpose, the spectral signature of the land covers including vegetation cover and kaolin were determined and matched filtering (MF) method was applied to classify the images. The overall accuracy of the classified 2009 image was estimated for the kaolin and the vegetation cover to 89.5 and 86.0 % respectively. The change in the land use which occurred from 2000 to 2009 were quantified and analysed for both classes. This study provided a practical framework for rapid mapping of the land cover changes around open-cut kaolin mining area using freely available Landsat data. 相似文献
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Pawan Kumar Singh Arvind Kumar Mishra Deepanshu Ranjan Singh 《Journal of the Geological Society of India》2017,89(3):307-314
Indian coal mining industry is in transition phase with the growing demand of coal and is likely to escalate further with the need of ultra-mega power projects as well as announcement of smart cities projects. Although, there exist sufficient coal reserves in India, continuous acquisition and possession of coal bearing land is required to minimize the existing gap prevailing between coal demand and supply.The solution of the problem lies not only in modification of laws and policies of industry, but also in modification of mining engineering practices towards sustainable development. This paper critically examines the cause of the problem in the light of Indian laws and practices of the industry. In this paper a method of exact reclamation of post-mining land has been designed as a solution to make easier land acquisition by way of proposing a system of returning back the exact reclaimed land to its owners under corporate social responsibility activity of the industry. The proposed conceptual model of interlinking corporate social responsibility with land exchange will encourage sustainable development practice by mining engineers, and may turn around the public image of the industry. 相似文献
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Seismic reflection techniques are, for the first time, used to image a thin, diamondiferous, kimberlite dyke from subcrop to depths greater than 1300 m. Exploration for vertical kimberlite pipes generally utilizes potential field techniques that often fail to reveal subhorizontal or shallow-dipping intrusions. In contrast, seismic reflection methods are well suited for imaging targets with this geometry. Therefore, in order to evaluate seismic reflection as a tool for subhorizontal kimberlite dyke/sill exploration and mine planning, a feasibility study and subsequent seismic survey were undertaken on the diamondiferous Snap Lake dyke (Northwest Territories, Canada). A substantial drilling program has mapped the dyke as a gently dipping sheet that averages 2–3 m in thickness. The detailed structural and composition data available at Snap Lake provides a unique opportunity to test reflection techniques on a well-sampled deposit. The feasibility study involved measuring P-velocities and densities of cores drilled from the kimberlite and host rocks. These data were used to model reflection amplitudes, evaluate resolution limitations, and determine the acquisition parameters for the reflection survey. Two 2-D lines were acquired that provide comparative datasets for different sources (explosive and vibroseis) and ground types (land and lake ice). In addition, the exploration-scale survey incorporated high fold (40–260 nominal) and long offsets (3260 m). The explosive-source profile recorded on land yielded a superb image of the dyke from depths of 60 m to more than 1300 m over a lateral distance of 5700 m. The seismic image correlates well with adjacent drill hole data and adds considerable detail to the topography of the kimberlite sheet determined by drilling. The vibroseis source also imaged the dyke, but only when sources and geophones were on land; the dyke was not imaged beneath the ice due to reverberation and attenuation effects. The frequency response and unusually strong reflection amplitudes from the dyke indicate the importance of tuning effects and multiples for this type of target and acquisition environment. Apparent correlations between reflection amplitudes and dyke structure (e.g., thickness, feathering, 3-D geometry) suggest that seismic reflection data may be valuable for guiding drilling programs. The results demonstrate that, in the appropriate situation, seismic methods have great potential for use in kimberlite exploration, subsurface mapping, and detailed imaging for mine development purposes. 相似文献
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为满足合肥市大房郢水库建设及土地管理部门对用地资井的要求,利用航空遥感片对用地现状进行了调查,采用航测解析法配合其它先进测量手段(GPS全球定位系统、TMS全站仪测量系统)确定用地的各类界线。本文介绍了这次工作的技术路线,土地利用现状调查,用地界线的确定,数字影像线划地籍图的编辑及数据汇总等方面的情况。 相似文献