北斗一号/GPS双模手持终端野外遥感地质矿产查证系统设计     

孟月玥  汪大明  方洪宾  鲁学军  李柳柯 《地质力学学报》2012,18(3):235-241

针对野外遥感地质矿产查证工作特点,研究设计基于北斗一号/GPS双模手持终端的野外遥感地质矿产查证系统。该系统一方面可进行野外遥感地质矿产查证的相关业务工作,如遥感影像及矢量图的加载显示、添加编辑查证点、控制点片采集等;另一方面,野外作业人员可以通过北斗一号卫星模块,回传定位及其他信息至管理中心,便于进行作业管理,并为野外作业人员提供安全保障。   相似文献   

高精度自动化水平基准装置中微米级微位移平台的应用     

路杰  史雨辉 《大地测量与地球动力学》2011,31(2):145-148

针对高精度水平基准装置人工调试时人为误差大,费时费力等实际,提出一种自动调平方法。  相似文献   

甘肃省红山地区航空高光谱矿物信息精度分析     

王永军  王瑞军 《地质论评》2019,65(Z1):239-240

正红山地区位处于北山成矿带,该区及周边区域分布有较多的铁、铜、镍、金等矿床,成矿地质条件优越。区内植被不发育,基岩裸露,围岩蚀变发育,有利于发挥高光谱遥感的优势,获取高质量的航空高光谱遥感数据,提取丰富的高光谱矿物信息,同时有利的地貌和自然生态景观,便于后期航空高光谱矿物信息精度的野外验证和分析研究。  相似文献   

Illustrations of verification for seismic properties of masonry structures in primary and secondary school buildings     

LI Hui  QIU Jianhui  YANG Hongwei  ZHANG Ling 《世界地质(英文版)》2010,13(3)

After Wenchuan earthquake,Code for verification of Seismic Protection of Building is revised and the seismic verification for the buildings of primary and secondary schools is upgraded from Class C to Class B.With this background,nearly one hundred buildings of primary and secondary schools in Jilin Province have been reevaluated by the earthquake-resistant standards and a set of simplified earthquake-resistant evaluation methods based on relevant technical standards and regulations were summarized and presented here.These methods can serve as an important reference for future earthquake-resistant evaluation for primary and secondary school buildings as well as a convenient guide for the relevant construction and modification works.  相似文献   

无人直升机摄影测量系统的设计与验证     

薛武  张永生  戴晨光  赵玲  包全福 《测绘通报》2017,(4):58

针对目前已有的无人机摄影测量系统存在的精度不高、依赖起降场地、续航能力差等问题,设计并实现了无人直升机摄影测量系统,该系统将Phase相机、Applanix POS设备集成在3轴稳定对地观测吊舱内,具有垂直起降、载荷量大、续航能力强、测量精度高等优势。在嵩山遥感定标场开展了测试飞行,结果表明：系统直接地理定位精度较高,可用于应急测图;在少量控制点参与下,系统定位精度远优于1∶500测图要求,可用于大比例尺测图,具有重要的推广应用价值。  相似文献   

三维激光模型在规划中的应用     

王文晖 《测绘通报》2017,(9):100

全国众多城市已初步实现了应用数字三维建模技术进行规划前和规划中的三维仿真规划管理,有效提高了规划审批的质量和效率。但受项目规划验收数据采集方式的限制,规划核实借助三维平台的城市还为数不多。随着三维激光扫描设备和技术的不断发展,微型远距离高精度三维激光扫描设备不断进入应用阶段,旋翼无人机搭载微型三维激光扫描仪作业方式的出现,使小区域快速精确生成三维模型成为可能。本文通过一项建筑竣工三维测绘试验案例,试探应用小区域三维激光扫描技术,在批后管理中客观地对项目建设情况和项目进度进行精确管理,直观、真实、详细、准确地了解项目的实际建设情况,提高规划批后管理和规划核实的效率,极大地推动了规划管理走向高效化和科学化。  相似文献   

Modelling of hydrodynamics and cohesive sediment transport in Tanshui River estuarine system,Taiwan   总被引：2，自引：0，他引：2  

Liu WC  Hsu MH  Kuo AY 《Marine pollution bulletin》2002,44(10):1076-1088

A laterally averaged two-dimensional numerical model is used to simulate hydrodynamics and cohesive sediment transport in the Tanshui River estuarine system. The model handles tributaries as well as the main stem of the estuarine system. Observed time series of salinity data and tidally averaged salinity distributions have been compared with model results to calibrate the turbulent diffusion coefficients. The overall model verification is achieved with comparisons of residual currents and salinity distribution. The model reproduces the prototype water surface elevation, currents and salinity distributions. Comparisons of the suspended cohesive sediment concentrations calculated by the numerical model and the field data at various stations show good agreement. The validated model is applied to investigate the tidally averaged salinity distributions, residual circulation and suspended sediment concentration under low flow conditions in the Tanshui River estuarine system. The model results show that the limit of salt intrusion in the mainstem estuary is located at Hsin-Hai bridge in Tahan Stream, 26 km from the River mouth under Q75 flow. The null point is located at the head of salt intrusion, using 1 ppt isohaline as an indicator. The tidally averaged sediment concentration distribution exhibits a local maximum around the null point.  相似文献   

T213 100hPa高度预报场的检验     

刘惠云  黄成荣 《沙漠与绿洲气象(新疆气象)》2005,28(2):1-3,9

用2002年3月～2004年9月能使用的共24个月的T213 100hPa24～168h7个时效的逐日高度预报场资料，分别计算各时效逐月高度预报场的月平均误差和方差，分季进行检验分析；对冬半年超长波调整过程中长波东移以及夏季南亚高压呈双体型时副热带长波槽东移的预报能力进行了综合检验；检验结果对预报工作有很大的实用价值。  相似文献   

基于载荷试验的青藏铁路试验路堤沉降监测设备可靠性验证     

胡明鉴  汪稔  黄明奎  于基宁  付伟 《岩土力学》2006,27(7):1209-1213

青藏铁路成败的关键在路基工程,而路基工程的关键是冻土问题.为研究填土分选重组试验路堤的承载力状况以及冻土沉降钻孔监测设备的性能和监测结果的可靠性,进行了基于平板载荷试验的冻土沉降监测设备可靠性验证,估算试验路堤的承载力.试验结果表明,将试验路堤土体视为各向同性弹性连续介质模型是合理的;冻土变形监测设备测试结果与利用土介质的各向同性弹性连续介质模型的计算结果相吻合,显示出冻土钻孔变形监测设备具有较高的可靠性.  相似文献   

Experimental and numerical investigations of the behaviour of a heat exchanger pile   总被引：1，自引：0，他引：1  

Lyesse Laloui  Mathieu Nuth  Laurent Vulliet 《国际地质力学数值与分析法杂志》2006,30(8):763-781

The geothermal use of concrete geostructures (piles, walls and slabs) is an environmentally friendly way of cooling and heating buildings. With such geothermal structures, it is possible to transfer energy from the ground to fluid‐filled pipes cast in concrete and then to building environments. To improve the knowledge in the field of geothermal structures, the behaviour of a pile subjected to thermo‐mechanical loads is studied in situ. The aim is to study the increased loads on pile due to thermal effects. The maximum thermal increment applied to the pile is on the order of 21°C and the mechanical load reached 1300 kN. Coupled multi‐physical finite element modelling is carried out to simulate the observed experimental results. It is shown that the numerical model is able to reproduce the most significant thermo‐mechanical effects. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献