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介绍了以TCA自动化全站仪为基础组成的自动变形监测系统和广州地铁"非地铁施工时地铁结构变形监测"项目的现场方案及优化设计.实际应用表明,该系统稳定可靠,可以胜任地铁结构变形监测的工作. 相似文献
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介绍以SRX1X自动化全站仪为基础组成的无人值守自动变形监测系统和"深圳地铁运营中的地铁结构变形监测"项目的现场方案及优化设计。深圳环中线前海湾站地铁结构变形监测工程,对深圳环中线前海湾站地铁结构危害性变形及时提出了预报,达到了监测的目的;并且分别建立了全线的变形监测体系,为下阶段的监测工作提供了依据;为地铁轨道检修及维护使用、保证地铁的正常运行和设施安全提供了安全信息。实际应用表明,该系统稳定可靠,可以胜任地铁结构变形监测的工作。 相似文献
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自动变形监测系统在地铁结构变形监测中的应用 总被引:11,自引:2,他引:11
介绍了以TCA自动化全站仪为基础组成的自动变形监测系统和广州地铁“非地铁施工时地铁结构变形监测”项目的现场方案及优化设计。实际应用表明,该系统稳定可靠,可以胜任地铁结构变形监测的工作。 相似文献
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当前,变形监测在工程建设中拥有重要的地位,针对变形监测合同履行时纠纷不断的现状,提出了变形监测合同磋商流程及要点,有助于降低合同风险、减少合同纠纷,最终圆满完成监测任务,为建设工程安全保驾护航。 相似文献
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介绍了以SOKKIA SRX1X自动化全站仪为基础组成的无人值守自动变形监测系统和深圳地铁“深圳地铁运营中的地铁结构变形监测”项目的现场方案及优化设计。地铁变形监测是为了掌握地铁沿线因物业开发或其它工程施工对地铁建筑结构产生的水平位移和竖向位移,确保地铁结构安全和正常运营,建立全线的变形监测体系,为后续地铁设计、施工提供资料。深圳环中线前海湾站地铁结构变形监测工程,对深圳环中线前海湾站地铁结构危害性变形及时提出了预报,达到了监测的目的;并且分别建立了全线的变形监测体系,为下阶段的监测工作提供了依据;为地铁轨道检修及维护使用、保证地铁的正常运行和设施安全提供安全信息。实际应用表明,该系统稳定可靠,可以胜任地铁结构变形监测的工作。 相似文献
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针对南通境内常见的大跨度混凝土变截面连续箱梁桥和系杆拱桥的变形监测技术进行了研究,从监测网点布设、监测周期、监测精度、变形指标控制、变形监测的主要内容、监测方案实施等几个方面进行了探讨,并结合已完成的工程项目验证了方案的可行性。 相似文献
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基于三维激光扫描技术的变形监测方法研究 总被引:1,自引:0,他引:1
针对三维激光扫描技术应用于变形监测的研究,本文提出点、面结合的变形监测方法。通过提取变形监测点的三维坐标信息,进行多期数据的监测点坐标信息的比较,获取局部的变形信息。运用豪斯多夫距离对点云模型进行求差运算,得到整体变形信息,并对模型的求差运算结果进行对比分析。实验结果表明,基于三维激光扫描技术的点、面结合的变形监测方法在变形监测中具有较高的实用价值。 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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GNSS系统及其技术的发展研究 总被引:3,自引:1,他引:2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引:13,自引:0,他引:13
介绍“4D”(即数字地面模型、数字正射影像、数字栅格地图和数字线划地图)系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services
Kohei OGAWA Edward VERBREE Sisi ZLATANOVA Naohiko KOHTAKE Yoshiaki OHKAMI 《地球空间信息科学学报》2011,14(2):109-118
Location-Based Services (LBS),an emerging new business based on smartphone and mobile networks,are becoming more and more popular.Most of these LBSs,however,only offer non-seamless indoor/outdoor applications and simple applications without giving stakeholders the chance to play an active role.Our specific aim is to solve these issues.This paper presents concepts to solve these issues by expanding the Open Location Services Interface Standard (OpenLS) to allow seamless indoor/outdoor positioning and to extend the content of the services to include information recommended by stakeholders. 相似文献