ADS80航摄影像在省级基础测绘中的控制点布设方案研究

基于省级1：10 000基础测绘成图,以试验生产的方式探讨了ADS80数码相机航摄影像生产的关键技术——Level 0级影像空中三角测量和空三加密后的Level 1级影像立体测图,分析了不同影像地面分辨率、不同控制点数量和分布条件下ADS80影像的后处理精度,提出了ADS80影像在1：10 000成图中的控制点布设方案,结果可以为省级基础测绘生产提供参考依据。     

Google Earth在线路勘测设计中的应用分析

通过分析Google Earth在电力线路勘测及输电线路基建管理中的应用,提出了一种简单可行的构建三维输电线路GIS系统的方法。     

锦州市系列地图的设计与制作

主要阐述了锦州市系列地图的设计要点及制作过程。     

Optimisation of seismic network design: Application to a geophysical international lunar network

Fundamental scientific questions concerning the internal structure and dynamics of the Moon, and their implications on the Earth-Moon System, are driving the deployment of a new broadband seismological network on the surface of the Moon. Informations about lunar seismicity and seismic subsurface models from the Apollo missions are used as a priori information in this study to optimise the geometry of future lunar seismic networks in order to best resolve the seismic interior structure of the Moon. Deep moonquake events and simulated meteoroid impacts are the assumed seismic sources. Synthetic P and S wave arrivals computed in a radial seismic model of the Moon are the assumed seismic data. The linearised estimates of resolution and covariance of radial seismic velocity perturbations can be computed for a particular seismic network geometry. The non-linear inverse problem relating the seismic station positions to the linearised estimates of covariance and resolution of radial seismic velocity perturbations is written and solved by the Neighbourhood Algorithm. This optimisation study favours near side seismic station positions at southern latitudes in order to constrain the deep mantle structure from deep moonquake data at large epicentral distances. The addition of a far side station allows to divide by two the size of the error bar on the seismic velocity model. The monitoring of lunar impact flashes from the Earth allows to improve the radial seismic model in the top of the mantle by adding much more meteor impact data at short epicentral distances due to the high accuracy of the space/time location of these seismic sources. Such meteor impact detections may be necessary to investigate the 3D structure of the lunar crust.     

The British Contribution to the Charting of the Adriatic Sea

In this paper, we present the results of an original research study that was based on the analysis of British charts of the Adriatic produced during and immediately after military operations undertaken by British forces and their allies against Napoleon in the Adriatic. We analyse the creation and production of British charts of the Adriatic from the first charting campaign of the Hydrographic Office of 1800–1801 to charts produced in the period of British rule over the island of Lissa of 1811–1815 to the first systematic hydrographic surveying of the Adriatic of 1817–1819 under the leadership of William Henry Smyth that resulted in the first hydrographic atlas and pilot book of the Adriatic. At the same time, the paper evaluates the British contribution to the creation of some of the first reliable nautical charts of the Adriatic and to the development of the nautical cartography of the Adriatic in general.     

MCSs移出青藏高原规律的可视化表达与知识发现

为了客观揭示青藏高原上中尺度对流系统(Mesoscale Convective Systems，MCSs)的演变规律，尤其是它向东移出高原的条件，采用卫星红外影像运动目标计算机自动识别与跟踪技术，提取了高原上夏季MCSs的大小、强度、生命史、形状及分布等空间特征，并将MCSs的空间特征与青藏高原HLAFS资料相关联，建立了MCSs时空数据库。运用面向时空数据挖掘的相关分析法、关联规则及决策树法，求解MCSs东移传播出高原与其周边环境物理场之间的关系，进而建立了400hPa和500hPa两个层次上影响MCSs移出高原的环境物理场的可视化概略模型图。从模型图中发现：在400hPa上，移出高原且方向向东的MCSs主要决定于等压面高度、散度和涡度场，等压面高度变化呈南北向；而在500hPa上，等压面高度和K指数场是影响。MCSs移出高原的主要因素，K指数变化呈西东走势。模型图初步揭示了MCSs移出青藏高原的规律。     

构建设计院的集成一体化信息基础应用平台

根据建设部有关工程勘察设计信息化建设“十五”规划要求,总装备部工程设计研究总院从数值计算、力学分析、三维设计与仿真、虚拟现实及与之相配套的数据管理、网络系统平台等几方面,进行信息化技术平台的构建,并形成一个集决策服务、办公管理、项目管理、协同设计管理、工程图档管理为一体的集成化应用系统平台。通过前期实施,取得了一定的成效,本文介绍了我院信息化平台的构建情况。     

Fault induced permanent ground deformations—an experimental comparison of wet and dry soil and implications for buried structures

Fault surface ruptures constitute a great risk to human lives, buildings and infrastructure. Despite this few building codes contain risk reducing provisions. Experiments provided results for establishing design rules in terms of possible dislocation and failure strains. Dry and wet soil behave substantially different. A brief discussion on counteracting effects of the wet soil on the interaction between a buried structure and the surrounding ground is included.     

黄金地质勘查信息系统设计

为适应地质工作数字化发展趋势,实现黄金地质勘查工作的数字化、信息化、网络化、标准化,设计开发黄金地质勘查信息系统。该系统针对黄金部队地质勘查与管理工作特点、组织结构、计算机软硬件及网络建设现状和发展趋势,充分考虑文本数据、图形(图像)数据特性,采用GIS、数据库、．net技术,设计分布式黄金地质信息数据库,实现施工生产信息、管理信息和成果资料信息的一体化存储;设计项目管理、施工生产、统计调度、矿权管理四个模块,满足地质勘查施工生产、过程管理和成果管理的需要。系统采用单机版与网络版相结合的模式,实现地质勘查各类数据的存储、管理、维护和使用。     

Stress analysis of buried steel pipelines at strike-slip fault crossings

Existing analytical methods for the stress analysis of buried steel pipelines at crossings with active strike-slip faults depend on a number of simplifications, which limit their applicability and may even lead to non-conservative results. The analytical methodology presented herein maintains the well-established assumptions of existing methodologies, but also introduces a number of refinements in order to achieve a more wide range of application without any major simplicity sacrifice. More specifically, it employs equations of equilibrium and compatibility of displacements to derive the axial force applied on the pipeline and adopts a combination of beam-on-elastic-foundation and elastic-beam theory to calculate the developing bending moment. Although indirectly, material and large-displacement non-linearities are also taken into account, while the actual distribution of stresses on the pipeline cross-section is considered for the calculation of the maximum design strain. The proposed methodology is evaluated against the results of a series of benchmark 3D non-linear analyses with the finite element method. It is shown that fairly accurate predictions of pipeline strains may be obtained for a wide range of crossing angles and fault movement magnitudes encountered in practice.