Hydropower project construction scheme based on 3D GIS Development

         Geographic Information System (GIS) is used to acquire 、 Store 、 Key specialized tools for parsing and monitoring geospatial data 、 Technology and courses , After nearly 50 Development trend in , Today, it has gradually become a very perfect technology . Today, , The three dimensional GIS It also moves towards the application of specific engineering projects from theory and practice , The three dimensional GIS It is a new technology developed in recent years to describe and integrate the traditional geographic information system with a real three-dimensional scene , With real 、 Visualization and other advantages , It also inherits the analysis of traditional GIS 、 Solution and data organization entity model .

        The design scheme and management decision of hydropower project is a very complicated work , It is usually necessary to compare multiple plans to determine the best choice . This promotes the use of text and two-dimensional engineering drawings to describe a plan , There is no way to make people have a visual grasp of . Create a visual representation of the effectiveness of the design scheme , Visual system software to maintain the efficient use of project information and innovative management , Not only can Very good visual representation of different scheme designs and effects 、 Analysis and comparison , And on the basis of the three-dimensional solid model, the three-dimensional visual search of project information can be maintained , It is conducive to improving the efficiency and quality of architectural engineering design . This paper introduces in detail that GIS Used in hydropower engineering , Application GIS Powerful database management and parsing function , Integrate excellent technologies and methods such as 3D visualization , It shows a good example for the traditional design scheme of hydropower installation engineering 、 Visual 3D GIS , Promote the intellectualization of the design scheme of hydropower installation engineering 、 visualization 、 Provide strong support for architectural engineering design and engineering construction management .

1. The three dimensional GIS platform

        Since the 1980s , 3D visualization technology of spatial data has always been the network hotspot of scientific research in the industry , Especially in recent years , The scientific research on technology presents an unprecedented spectacular scene , Scientific research institutions and companies around the world have come to see the excellent development potential of three-dimensional indoor space technology , Carried out innovation education 、 Cross industry collaboration and three-dimensional technology research , The product has developed a number of outstanding products with their own characteristics . The United States first released GoogleEarth、SkylineGlobe、VirtualEarth、ArcGISExplorer、WorldWind Waiting for mobile software . China has also released similar commodities in turn, such as LTEarth、GeoGlobe、EV-Globe Waiting for mobile software .

        SkylineGlobe It is an American private enterprise new technology enterprise that started in Israel , It released TerraSuite The product series has been widely used in hydraulic engineering 、 Electrical engineering 、 Crude oil 、 Urban and rural planning and other manufacturing industries , It is widely used at this stage 、 Mobile phone software, a basic platform for 3D visualization of large scenes with good overall characteristics , And it shows a variety of secondary development sockets , It is applicable to most mainstream product vector material data types . In the text, I choose SkylineGlobe As a three-dimensional GIS platform , Scientific research on its application in hydropower projects .

2.SkylineGlobe Software

        SkylineGlobe It is the world's leading three-dimensional geographic information system platform , can Suitable for desktop 、 Mobile intelligent terminal 、 Multi screen projection and other display devices , can Show each customer customized mobile phone software and service items . This software is the use of airline images 、 Communication satellite data information 、 An interactive natural environment established by information features such as large digital elevation entity model , It is a separate hardware configuration 、 Multi platform 、 Intelligent system software .SkylineGlobe The mobile phone software series product platform is manufactured from data information production 、 To write 、 The announcement of Internet technology presents a perfect solution for business services , Show the customer one-stop service . Whether in cyberspace or stand-alone version , Customers can customize the function according to their own requirements , Create a humanized three-dimensional geographic information system , According to the method of three-dimensional interaction to show a lot of indoor space natural geographic data information , On this basis, it integrates its own business process platform . Application SkylineGlobe Build 3D GIS The key processes of the platform are as follows ：

(1) According to the contour 、 Elevation point 、 Airline image 、 Large digital elevation entity model obtained from satellite image and other data (DEM) And large digital orthophoto (DOM);

(2) According to the DEM and DOM Application of data information TerraBuilder Making and generating 3D Geographic scene data information ;

(3) Integrated basic geographic information data information , Such as administrative boundaries 、 Village name and other vector data ;

(4) Integrated hydropower engineering design scheme 、 engineering construction 、 The overall planning 、 Data information of special lectures on environmental protection, migration and natural disasters, and data information of three-dimensional solid model

(5) Carry out customized development and design according to actual application requirements ;

(6) Establish a three-dimensional geographic information system platform .

3. The three dimensional GIS Application in hydropower and water conservancy projects

3.1 Application of project inspection

        New hydropower projects are generally Located in Dashan Grand Canyon area , The plant community in the hub area is usually lush 、 The mountain is high and the slope is steep 、 Standard deviation of traffic travel and intervisibility . During the initial survey of the project , Usually because of the traffic on the spot 、 Intervisibility standard , It is impossible to accurately distinguish the position of the new project 、 About landform , Use the created 3D GIS platform , In the initial plan, the scientific research of the program is basically , Carry out overall exploration planning and scheme planning , Technical preparation before exploration , To improve the purpose of exploration , Improve the effectiveness of work .

3.2 The initial plan is scientific research         According to the three-dimensional physical geographic scene data information and its drilling 、 Geological points and other data information , It can be used in the scientific research of planning scheme in the early stage of project design , Basically for dam section 、 During the work, the adaptability of the layout of the dam site and the core area is basically analyzed , To formulate work objectives 、 Define the scope of work , The bidding of design scheme and the initial management decision of investment project under the lack of material standard have the positive effect .

         besides , At the initial stage, plan the scientific research of the scheme , It can keep the convenience of early scientific research 、 Multi plan competitive negotiation ; And the precision of basic estimation , Keep anchor record query 、 Spacing measurement 、 Engulf parsing 、 Model analysis, etc , Consider basic analytic applications .

3.3 Overall planning of highway transportation

         According to three-dimensional GIS platform , The design scheme staff can obtain the landform of the area where the line passes 、 topographic features 、 rivers 、 Household land and transportation network department, etc , It is convenient to master the harm to the line , Adjust the selected line . When the design scheme staff carry out the design planning , According to different physical and geographical standards , Convenient design scheme 、 Change the travel plan , In addition, it can In the three-dimensional scene, the brand vividly presents the transportation plan scheme , The overall planning of the transportation inside and outside the hydropower plant , Establish a more scientific and standardized plan .

3.4 Presentation of general layout plan for project construction

         According to three-dimensional GIS platform , Obtain the three-dimensional landform and image of the hydropower project area , Make a real three-dimensional visual scene , The project construction site of the hydropower project design scheme 、 Waste slag 、 Quarry 、 Key engineering construction, production and manufacturing service facilities 、 Community owner base 、 Reasonable integration of basic information such as infield traffic and travel , And carry out integrated presentation in 3D visualization scenarios , Visualize the effectiveness of the design scheme , Thus, it is suitable for the management decision-making and design staff to show the information content of the visualized brand image , Greatly improve the contemporary level of architectural engineering design and supervision .

3.5 Data analysis of land requisition and resettlement for water control project

        In 3D GIS , can In the analysis of resettlement data of water control project , Including analysis of water conservancy project engulfment category and statistical analysis of engulfed commodity index value 、 The overall planning of demolition and the analysis of the number of people according to their homes, etc . By using the data information of the special lecture on water conservancy project resettlement, the agricultural land of a certain river section or a water conservancy project can be easily calculated and statistically analyzed 、 Agricultural land 、 Lawn and other land areas , In addition, the brand image in the three-dimensional scene can also show the three-dimensional actual effect of the resettlement according to the location and the overall planning , It shows a kind of visualization for the land requisition and resettlement of the water conservancy project 、 An efficient way , So as to improve the pertinence of immigration work 、 Rationality and innovation .

4. Conclusion

        Under the development trend of intelligence all over the world , Rich and colorful 3D electronic information 、 real 、 The actual appeal and the advantages of visualization have gradually become the mainstream products , With the development trend and perfection of 3D Visualization Technology , according to SkylineGlobe The 3 d GIS With the help of its powerful massive information solution ability , It shows an excellent technical way for the visual expression of architectural engineering design and results , But to be able to make the three-dimensional GIS Used in hydropower installation engineering , It is necessary to further analyze the customized development design of the role of technology specialty ,GIS And CAD Data and information , It is the seamless splicing and tight connection of data and information of 3D design scheme , Serve the design of hydropower projects as soon as possible .

        China Survey United Network is the portal of China survey industry , With “ services 、 Shared resource use value ” Based on the people , Focus on creating “ The most famous interactive exchange e-commerce platform in China's survey and manufacturing industry ”. It has the most technical professional and technical talent reserve in the manufacturing industry 、 Database query of survey machinery and equipment and database query of effectiveness sharing resources , It is designed for companies in the manufacturing industry , The information content communication and sharing resource platform created by industry practitioners .