Study On Key Technologies For Vector Tile Of Coal Mine Spatial Data

The mine maps are important material in the production process of mine,which have rich types and are suitable for different business and have different uses.The coal mine spatial data,as a very important part of the mine map data,can directly describe the characteristics of all kinds of geographical elements in coal mine area,which is of great significance for coal mine production.The coal mine spatial data has the characteristics of various kinds,large amount of data and frequent interaction.At present,the network map service of Web GIS application in coal mine is slow and inefficient,and there are still some problems such as poor data interaction and update,poor data sharing and so on.This paper started from the characteristics of coal mine spatial data and the actual demand of data building,map drawing,data sharing and updating of various professional departments of coal mine,and used the vector tile technology to realize the tile segmentation and network transmission of coal spatial data,in order to meet the high efficiency transmission and interactive update demand of the coal mine network map.The main work and conclusions are as follows:(1)Around the building of coal mine spatial data vector tiles,the thsis defined vector tile organization model and data structure,studied the the generation algorithm of the coal mine spatial data vector tile based on the two-dimensional graphics clipping algorithm,and built the vectortile slice service.(2)Around the vector tile storage and access,the thsis studied the distributed storage scheme of vector tile data,and built a high availability vector tile storage system based on No SQL database.In addition,the thsis studied the vector tile map request and response mechanism and built the distributed vectortile map service.(3)Around the vector tile interaction and update,the thsis studied the vector tile update mechanism based on feature granularity,and built the vectortile update service which realized synergetic perception of multiuser update operations.The experimental system is constructed by taking some coal mine data of a certain group as an example to verify the key technologies of the study.The experimental results verify the feasibility of the proposed vector data service system of coal spatial data,which lays the foundation for efficient data transmission and multi-department collaborative mapping online.