| At the first beginning,borehole data is kept with paper form and enetechy,after that,they are kept with database that become standard gradually,but there are some problems:the difficulty of data sharing andquerying;the way of building database is not general;format confusion;spatial data which is kept by common attributes storage does not support spatial retrieval;spatial data which is kept by binary geometry storage do spatial operation inefficiently.Study on above problems in this paper,it is important practical value for normalization,consistency,sharing of borehole data management and the realization of companies,mines,every technique departments of minging erea use borehole data web application.In this paper,based on technology and theory of tile map cache,Arc GIS Server,Flex and so on, Research of Borehole Data Management and Spatial Data Release and Querying System Based on Network is constructed,meanwhile,prototype system is developed;by combining attribute data with spatial data,realize several querying:querying attributes by pictures, querying pictures by attributes,querying attributes by attributes and the querying of cross-section drawn about borehole;research on map tile technology borehole data web application borehole data:multistage extensive catalog organization model of map tile,detailed realization progress of map tile algorithm,map part updated algorithm,cache strategy of map tile at client side,the show and all kinds of operations based on Flex of map tile at client side.Research of Borehole Data Management and Spatial Data Release and Querying SystemBased on Network manage map service at server side by the high-performance of Arc GIS Server.Map rendering and all kinds of operations of map are realized by applicating Flex.At client side,in order to ensure fast operation of map,improve utility ratio of tile by three ways:map zoom tile prefetch,map translation prefetch,IE cache. |
