核电站近岸温度场航空热红外遥感测量数据处理研究

核电站运行过程中需要向附近海域排放大量的冷却水,冷却水是否影响周边环境及核电站的运行,温排水数学模拟和物理模拟验证都需要获取不同季节和潮汐状况下的核电站附近区域海面温度场分布特征,而航空热红外遥感技术可以获取高精度海面温度数据。对核电站近岸温度场航空热红外遥感测量数据的处理方法进行了研究,为核电温排水遥感测量提供可以借鉴的方法和思路。     

核电站精密工程测量控制网的建立方法

以（某）百万千瓦核电站为例,对核电站建设精密工程（次级）测量控制网建立的原则、背景、作业方法、精度指标和各项技术要求进行了分析研究,并通过实例验证,按所提出的作业方法和技术要求所建立的控制网,其成果能够达到预期的精度,能够保证各项建设工程的定位要求。     

第四讲 核电站的变形观测

虽然核电站在设计时已考虑了各种事故发生的可能性，施工也确保了工程质量。但是，各种难以预见的自然因素，也会导致厂房变形、影响核电站的安全运行。为此，必须在核电站建立变形监测系统，对主要的建筑物、构造物、岩体和边坡等进行定期观测，以便掌握其变形动态、检验设计，发现观测异常及时采取有效措施，确保核电站生产和人员的安全。     

核电变形监测网的平差基准问题探讨

介绍了经典平差和秩亏自由网平差方法,以某核电站变形监测网为例,分析了稳定基准和不稳定基准的平差结果,探讨了核电变形监测网平差基准的选择方法。     

核反应堆压力容器精密检测

本文叙述了核电站反应堆大型压力容器几何尺寸检测的一整套精密工程测量技术方法，给出了检测技术工艺流程和主要数据处理模型。     

核电站渡槽伸缩缝监测系统设计

核电站的引水渡槽承担着为核电站排放冷却水的功能,直接关系到核电站的安全运行。渡槽中常年有大量冷却水流过,不断受到侵蚀冲刷,对其进行安全监测意义重大。设计和实施了一套渡槽伸缩缝监测系统,并对其中的一些数据进行了初步分析,得出渡槽伸缩缝的宽度与气温有直接关系,伸缩缝两侧的水平位移与垂直位移也与气温有着关联,但是变化量较小。     

浙江海盐秦山核电站的测量工作

浙江海盐秦山核电站是我国自行设计，自行施工的第一座核电站。核电站的测量工作包括普通测量精密工程测量、特殊精密工程测量。     

核电建设中测量数据处理模型的选择方法探讨

针对当前核电建设过程中测量数据处理采用单一经典平差方法的现状,提出了数据处理应根据不同建设阶段的具体实际,合理选用相应平差方法。以某核电站核反堆厂房变形监测为例进行了详细分析,以此表明:平差方法的合理选用,具有一定的实用价值。     

岸线变迁对田湾核电站温排水影响遥感调查

以田湾核电站周边海域为主要研究对象,选取2组同一潮态下、不同时相的Landsat8数据,研究田湾核电站周边岸线变化及温排水热影响现象,综合分析核电站周边岸线变迁对附近海域水温分布与变化的影响。结果表明,田湾核电站周边海域岸线变化显著,岸线变迁影响温排水水域流场分布,对核电站温排水区域造成影响。遥感技术能够监测出核电站周边岸线变迁情况及其对温排水的影响情况,关注周边岸线变化情况对于核电站周边海域海温监测工作具有积极意义。     

核电站环吊安装的施工测量方法

核能的安全有效利用扭转了矿产资源日渐枯竭,人们越来越难以承受的化石能源供应危机的严重局面,独具特色的核能发电技术越来越成熟。测绘科技的迅速发展与核能科技应用领域的有机结合,解决了核电站建设过程中诸多在以往难以逾越的技术难题。本文就工程测量在某核电站核岛安装工程重要安装项目——环形吊车(即环吊)安装中的应用作较为详细的分析论述。     

GPS在咸宁核电厂首级平面控制网测量中的应用

结合核电厂工程特点,介绍GPS技术在咸宁核电厂首级平面控制网设计和施测的应用,重点对GPS测量布网设计、数据观测进行阐述,分析实施环节中需关注的问题和相关技术要求,最后对GPS首级平面控制网的观测质量、成果精度进行了评价总结。     

钢衬里施工和穹顶吊装的测量监理

江苏田湾核电站1号核岛核反应堆厂房的钢衬里施工已结束,穹顶一次吊装成功.以此工程为例,探讨钢衬里施工和穹顶吊装中的测量监理工作.     

咸宁核电厂首批次级测量控制网的建立及分析

介绍了咸宁核电厂次级网设计的原则及实施过程中的注意事项,分析了采用GPS静态定位方式下的数据观测、数据处理控制方法,对GPS基线边长质量控制采用高精度全站仪进行了边长观测比较分析。     

GEOMETRICAL QUALITY CONTROL IN NUCLEAR POWER STATIONS: AN APPLICATION OF HIGH PRECISION UNDERWATER PHOTOGRAMMETRY†

This paper presents all the stages involved in the procedure for the determination of the shape of a fuel assembly, which is an essential part of a nuclear power plant and can only be handled underwater. Phototriangulation is used to obtain orientation elements, taking into account light refracting surfaces. Stereomodels are then set up for analytical restitution and the shape parameters for the object can be obtained. The project is a typical example of high precision underwater photogrammetry.     

Measurement of subsidence in the Yangbajing geothermal fields,Tibet, from TerraSAR-X InSAR time series analysis

Yangbajain contains the largest geothermal energy power station in China. Geothermal explorations in Yangbajain first started in 1976, and two plants were subsequently built in 1981 and 1986. A large amount of geothermal fluids have been extracted since then, leading to considerable surface subsidence around the geothermal fields. In this paper, InSAR time series analysis is applied to map the subsidence of the Yangbajain geothermal fields during the period from December 2011 to November 2012 using 16 senses of TerraSAR-X stripmap SAR images. In the case of the TerraSAR-X data, most orbital fringes were removed using precise orbits during the interferometric processing. However, residual orbital ramps remain in some interferograms due to the uncertainties in the TerraSAR-X orbits. To remove the residual orbital ramps, we estimated a best-fit ‘twisted plane’ for each epoch interferogram using quadratic polynomial models based on a network approach. This method removes most of the long-wavelength signals, including orbit ramps and atmospheric effects. The vertically strati?ed component (Topography Correlated Atmospheric Delay, TCAD) was also removed using a network approach. If the influence of seasonal frozen ground (SFG) is not taken into consideration, our results show that the subsidence rate around power plant I (the south plant) is approximately 20?mm/yr with a peak of 30?mm/yr. The subsidence rate around power plant II (the north plant) is approximately 10?mm/yr, when accounting for the influence of SFG on the power plant and its surrounding ground surface. Our results show that ground motion is caused by seasonal frozen ground and is strongly related to the temperature change.     

激光跟踪仪在核电站主管道安装中的应用

目前,核电站的主管道焊接越来越多的采用了自动焊技术,这有利于提高焊接质量效率,还可以压缩建设成本。然而,主管道自动焊对焊缝的限差较现有工艺要求更高,高精度的测量是实现主管道自动焊的必要条件之一。本文针对主管道自动焊管口组队高精度的技术要求,提出采用激光跟踪仪对主管道自动焊相关的设备进行更为精密的三维工业测量,通过理论技术评定测量精度,然后选择测量仪器和编制具体的测量方案,最终保证了主管道自动焊精确组对的实现。     

HAZMAP: A REMOTE DIGITAL MEASUREMENT SYSTEM FOR WORK IN HAZARDOUS ENVIRONMENTS

In a continuing drive to reduce the radiation exposure of nuclear workers, many routine aspects of nuclear plant maintenance and refurbishment are increasingly undertaken by robotic or remote handling tools. Accurate “as built” documentation of plant records is vital to the successful planning and execution of such operations since an unexpected obstruction or undocumented site modification may result in a costly disruption or even failure of the intervention. In recognition of the importance of such documentation, a recent European Community ? ? Teleman-Robotics and remote sensing operations in hazardous nuclear environments
sponsored project has been directed towards the development of techniques for cost effective survey and modelling of such plant. This paper will detail the rationale behind the design of such a system and will describe typical results from a number of pilot projects.     

抚顺发电厂变形规律浅析

抚顺发电厂是一座坑口发电厂,受采煤等多种复杂人为及地质因素的影响,厂区发生一系列的变形和破坏.本文基于观测成果对厂区变形规律进行了分析.