共查询到20条相似文献，搜索用时 62 毫秒
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三维地质建模及可视化系统的设计与开发 总被引：38，自引：7，他引：31
三维地学模拟是三维地质信息GIS可视化的核心内容。基于基础GIS软件平台MAPGIS,利用功能强大的三维可视化开发平台MAPGIS-TDE,设计、开发具有自主版权的三维地质建模及可视化系统。MAPGIS-TDE包括MAPGIS内核模块、MAPGIS-TDE基础平台、MAPGIS-TDE构建平台和基于MAPGIS-TDE的应用系统等4个层次。基于MAPGIS-TDE的三维地质建模及可视化系统分为地质数据管理、二维地质分析、地质断面处理、地质结构建模和地质属性建模等5大功能模块。系统实现时,将空间数据库划分为基础地理图形库、区域地质数据库、工程地质数据库、水文地质数据库、地球物理数据库、地球化学数据库等6类。该系统不仅提供了强大的地质数据管理、三维地质建模以及模型的可视化功能,还为专业技术人员提供了一个可视化的分析、设计平台。 相似文献
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地下水数值模型与组件GIS集成研究 总被引：7，自引：2，他引：7
地理信息系(GIS)应用于地下水资源评价和管理，需要地下水模拟模型的支持，集成数值模型与GIS可以通过嵌入、松散连接和完全整合三种途径实现。采用组件和面向对象技术，开发了基于MapObjects GIS组件的地下水模拟系统。该系统在面向对象建模、模型前处理、参数设置、模型后处理等方面突破了传统建模方式，实现了GIS功能与地下水数值模型的完全整合。结果表明，集成系统极大地改进了模型输入和计算结果的分析处理能力。 相似文献
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地下水资源评价模型与GIS的集成及其应用研究 总被引：1，自引：0，他引：1
地下水资源评价模型能够模拟地下水系统的时空变化特征,GIS具有强大的空间数据处理及数据可视化能力,将地下水资源评价模型与GIS集成,可以提高地下水资源评价模型的可用性。分析了地下水资源评价模型与GIS集成模型发展的历程,并针对传统集成方法存在的问题,设计了基于C/S结构的地下水资源评价模型与GIS集成框架,并详细介绍了在该集成框架内地下水资源评价的具体步骤,将该系统结构应用于哈尔滨市水资源管理,极大地提高了地下水资源评价的效率。 相似文献
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将数值模拟成果与监测数据集成,对三峡水库库首区诱发地震危险性进行了动态评价。在GIS (geographic information system) 平台上将数值模拟结果用专业地震模型进行评价,其成果作为评价背景数据库。用实时的地震监测数据、地下水位监测数据、地壳形变监测数据对背景数据库进行更新。选用FLAC 3D为数值模拟工具,MAPGIS为GIS基础平台,VC＋＋为开发工具,研发了水库诱发地震危险性动态评价系统。系统提供在一定蓄水位条件下、一定评价范围、一定深度内的水库诱发地震灾害危险性区划。研究结果表明,在GIS平台上,利用信息融合技术,可以将水库诱发地震的数值模拟评估、监测数据评估进行集成,实现水库诱发地震危险性动态评价。 相似文献
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基于MAPGIS组件的二次开发 总被引：10，自引：0，他引：10
组件式GIS是GIS与组件技术相结合的新一代地理信息系统。介绍了地理信息系统和组件式GIS的基本概念，并简单介绍了组件式GIS的基本优点及MAPGIS组件开发平台的组成和功能划分。阐述了使用MAPGIS组件进行GIS应用软件二次开发的一般方法和步骤，以及在VB中使用MAPGIS组件对象的基本步骤，并以VB为开发环境，结合MAPGIS数据管理组件、图形显示组件、图形编辑控件、属性编辑控件等，给出了一个具有图形显示、地理属性数据编辑等功能的实例程序，演示了如何使用MAPGIS组件进行GIS应用软件的二次开发。 相似文献
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为了突破面向业务系统及面向问题的建模技术,提高地理信息系统(geographic information system,GIS)应用系统适应需求不断变化及复用的能力,采用工作流技术结合形式语言实现应用模型精确定量数学化的有效转换,利用重载方式对空间算子的抽象与扩展来简化异构大型分析建模与应用系统构建中逻辑模型过于繁琐复杂的技术,实现空间分析建模的可视化、精确化和简单化.在此基础上,结合可视化界面搭建、功能仓库和空间资源管理,实现支持跨GIS平台的应用系统快速构建集成环境,为多领域应用系统的集成及功能复用提供手段,降低GIS应用系统的开发难度,为GIS应用不断深入和全面推广提供技术支撑. 相似文献
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文章以MAPGIS65为基础平台,采用Visual C#编程语言进行二次开发,利用组件式开发技术,建立地下水水化学辅助分析信息系统(EKGHAS),在实现基本数据管理、图形显示及查询的同时,实现等值线生成和叠置分析等空间分析功能,绘制相关图件。然后,将之用于鄂尔多斯盆地洛河组地下水水化学类型的分区研究,结果显示该区域水化学类型分布与当地水动力场分布所反映出的地下水补、径、排规律基本一致,表明该GIS系统能满足对地下水水化学场研究所需数据的实时、可视化管理需要。 更多还原 相似文献
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Fatma Trabelsi Jamila Tarhouni Abdallah Ben Mammou Gaetano Ranieri 《Environmental Earth Sciences》2013,70(5):2087-2105
The subsurface data are a basic requirement for the set up of hydrogeological framework. Geographic information systems (GIS) tools have proved their usefulness in hydrogeology over the years which allow for management, synthesis, and analysis of a great variety of subsurface data. However, standard multi-layered systems are quite limited for modeling, visualizing, and editing subsurface data and geologic objects and their attributes. This paper presents a methodology to support the implementation of hydrogeological framework of the multi-layered aquifer system in Nabeul–Hammamet (NH) coastal region (NE, Tunisia). The methodology consists of (1) the development of a complete and generally accepted hydrogeological classification system for NH aquifer system (2) the development of relational databases and subsequent GIS-based on geological, geophysical and hydrogeological data, and (3) the development of meaningful three-dimensional geological and aquifer models, using GIS subsurface software, RockWorks 2002. The generated 3-D geological models define the lithostratigraphy and the geometry of each depositional formation of the region and delineate major aquifers and aquitards. Where results of the lithologic model revealed that there is a wide range of hydraulic conductivities in the modeled area, which vary spatially and control the groundwater flow regime. As well, 17 texturally distinct stratigraphic units were identified and visualized in the stratigraphic model, while the developed aquifer model indicates that the NH aquifer system is composed of multi-reservoir aquifers subdivided in aquifers units and separated by sandy clay aquitards. Finally, this study provides information on the storing, management and modeling of subsurface spatial database. GIS has become a useful tool for hydrogeological conceptualization and groundwater management purposes and will provide necessary input databases within different groundwater numerical models. 相似文献
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本文论述了水文地质结构系统的基本思想以及建立水文地质结构系统模型的基本方法。具体研究了山西省太原地区的岩溶水文地质结构系统,将研究区划分为三个既相对独立又有一定联系的岩溶地下水亚系统,并分别建立了三个岩溶地下水亚系统的结构模型,即以多维脉络、三维层络、多层网络这些几何物理模型描述了该区岩溶地下水系统的四维特征;同时,对区内岩溶地下水资源的合理开发利用提出了具体方案。 相似文献
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由于三维地质结构模型和地下水面(包括潜水水面和承压水水面)模型开展地面沉降机理研究的重要基础,因此,本次利用Visual C 和OpenGL(Open Graphics Library)将苏州—无锡—常州(简称苏锡常)地区第四系含水层结构和地下水位形态进行三维虚拟表达,创建了酷似于实际情况的地下水赋存环境(三维地质结构模型),并在该环境中添加了各含水层的水位线。研究者可交互操作于该虚拟环境,并能够直观形象地了解研究区内的水文地质情况(各地层间的空间分布及岩性特征、含水层间的补给关系及地下水位的动态过程等),从而获得身临其境的感受,为进行地面沉降机理研究提供一个基础性的辅助方法。 相似文献
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针对现有地下水流模拟软件在数据预处理、三维可视化效果等方面的不足,以Visual C++ 6.0为主要开发环境、OpenGL为三维图形显示与渲染工具,以地下水及其赋存地质体观测记录为主要数据源,实现了数据处理、建模、存储、调度、查询以及真三维可视化,在此基础上完成了地下水动态模拟分析功能,实现了虚拟地理信息技术在地下水工作中的系统应用,具有功能开放、丰富、灵活的特点。 相似文献
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Keith C. Clarke 《GeoJournal》2014,79(2):129-136
This paper consists of three parts. After an introduction that stresses the historical progression of modeling methods, the motivation for urban modeling and simulation is explored, and the terms defined. Next, a meta-review of the literature is conducted, partially in an attempt to show that urban models resemble, and indeed share many overlapping issues with models in parallel fields such as economics and ecology. Lastly, the specific lessons learned from the author’s fifteen-year experience developing and supporting a cellular urban growth and land use change model (SLEUTH) are shared, in the interest of making these issues generic to current and future modeling and simulation efforts. The conclusion stresses that future models face new computing power, new theoretical paradigms, vastly improved ways of visualizing simulations, and a rapidly changing audience for modeling and simulation. 相似文献
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Jan Cools Yves Meyus Solomon Tuccu Woldeamlak Okke Batelaan Florimond De Smedt 《Environmental Geology》2006,50(8):1201-1209
For the implementation of the European Union Water Framework Directive (WFD), technological and scientific support are required. This paper presents a methodology to support a first step of the implementation of WFD, which is the delineation of groundwater bodies. The methodology consists of (1) the development of a complete and generally-accepted hydrogeological classification system for Flanders, named the HCOV code, (2) the development of a geographic information systems (GIS)-managed borehole database, and (3) the development of aquifer and aquitard models by means of a solid modeling approach. For each unit of the hydrogeological classification code for Flanders unit, GIS maps are generated for the three basic characteristics of hydrogeological layers: extent, base level and thickness, such that combined, the volume and extent of a hydrogeological layer is unambiguously defined. This GIS-based hydrogeological database has become a useful tool for groundwater management purposes and to provide the input for groundwater modeling. 相似文献
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地下水流数值模拟是高放废物处置库选址中水文地质评价的重要内容.水文地质概念模型是地下水流数值模拟的基础和前提.在北山预选区水文地质分析基础上,利用DEM数据生成了研究区地表水系,据此确定了模拟范围;借助GMS软件,建立了研究区三维水文地质结构模型;再通过边界条件、流场特征、地下水均衡项和水文地质参数的分析和描述,建立了北山地区水文地质概念模型. 相似文献
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The modeling of changes in surface water and groundwater in the areas of inter-basin water diversion projects is quite difficult because surface water and groundwater models are run separately most of the time and the lack of sufficient data limits the application of complex surface-water/groundwater coupling models based on physical laws, especially for developing countries. In this study, a distributed surface-water and groundwater coupling model, named the distributed time variant gain model–groundwater model (DTVGM-GWM), was used to assess the influence of climate change and inter-basin water diversion on a watershed hydrological cycle. The DTVGM-GWM model can reflect the interaction processes of surface water and groundwater at basin scale. The model was applied to the Haihe River Basin (HRB) in eastern China. The possible influences of climate change and the South-to-North Water Diversion Project (SNWDP) on surface water and groundwater in the HRB were analyzed under various scenarios. The results showed that the newly constructed model DTVGM-GWM can reasonably simulate the surface and river runoff, and describe the spatiotemporal distribution characteristics of groundwater level, groundwater storage and phreatic recharge. The prediction results under different scenarios showed a decline in annual groundwater exploitation and also runoff in the HRB, while an increase of groundwater storage and groundwater level after the SNWDP’s operation. Additionally, as the project also addresses future scenarios, a slight increase is predicted in the actual evapotranspiration, soil water content and phreatic recharge. This study provides valuable insights for developing sustainable groundwater management options for the HRB. 相似文献