The Appraise Method Of Mineral Resources In Middle-lower Reaches Changjiang River Based On Spatial Information Grid

Appraise of mineral resources as prophase work of mineral exploration are high emphasized by governments. The correlation theory and technology are grown up going through experiment explore, application development and information construct three phases. But the problems of correlation theory and technology of appraise of mineral resources are existed as currently major research works:(1) The information resource communion based on multi-source (different field) and different construct space along with GIS developing;(2) Avoid graph layer simple superposition, conquer disjoint between geological constitution information and mineral resources and information non-equivalence between model field and forecast field.The deposit model synthetically geology information forecast technology is a suit of mineral resources forecast appraise system put forward by Ye tian-zhu professor on the bases of plenty summing up mineral resources appraise method in more then twenty years in task of (863 plan). The key is intensify study on ore-forming geological tectonic guided by deposit geological model to resolve information non-equivalence between geological construction information and mineral resource forecast. The space information gridding connect by space data res, count res, memory res, data processing software with user forming distributing network condition to realize res communion for multiple data (different filed) sources. Based on this idea, the appraise method of mineral resource for middle-lower reaches of Changjiang based on Spatial Information Grid are put forward. By base apply plat roof of the national geological space grid (SIG), using technology means of deposit model geological info forecast and SIG attestation right, the practicality data of four provinces in middle-lower reaches Changjiang are studied to get unearthly purpose.1. National Geology Spatial Information Grid (NGSIG)(1) Grid architectureThe national geological space grid are cooperated with PORTL and grid node calculation pool to set up using World-Wide-Web serving system for communion of res and info according to WSRF serving mechanism and design concept. NGSIG is inaugurated in the key technically of intelligent space engine, element service parallel computation, service coordination and load balance making up the lack of Web service consultative to realize Web service associated with one or more postural res making res communion and cooperate with distributing data, software and hardware.(2) System of National Geology Spatial Information GridThe NGSIG are constituted of logic system, physics and application system based on GIS, GIS plat roof and criterion of space info communion.â‘ Logic systemThe NGSIC is divide into 7 layers framework in logic as get pretreatment layer, connect, resources, share, service analysis dispose, influx, application layer. Super stratum layer may transfer function and service of lower layer.â‘¡Physics systemThe basis cell of physics of system is "nodes". The nodes style of NGSIG is UDDI enroll node, data service node, specialty disposal service node and calculate service node.It may divide in district into:(1) The nodes of data center of national geological survey; (2) nodes of great section and professional centers (3) the nodes of geological survey of provinces.â‘¢Application systemThe space info apply flow is described based on NGSIG to divide apply arrangement and relations between each other from apply demand.The NGSIG may be share integration, information fuse and operated each other for space information and space dispose res. The geological space information service system may associated with a province or much provinces more vocation branch using multi-space databank to analysis correspond terra space information and to form mighty calculate ability and high-speed space information taken, transmission, storage, dispense and communion for geological industry.(3) Base establishment of NGSIG flat roofNGSIG flat roof is composed of four parts:data model and data res, network base establishment, correlation criterion and agreement, each correlative soft-hardware.(4)Basic frame of NGSIG flat roofThe key of NGSIG flat roof is composed of two parts as NGISG portal (PORTAL) and gridding node calculation pool. The Portal is the mouth of NGISG. The gridding node calculation pool is the plat roof to screen bottom hardware and software giving completeness transparent calculate or service condition.2. Forecast technology of deposit model synthetically geological informationThe key of Forecast technology of deposit model synthetically geological information is guided by deposit model based on geodynamics to form GIS in full process. Its key mostly is in two sides: (1) The ore-forming geotectonic study resolves the problem of information non-equivalence between geotectonic information and deposit forecast by compiling sediment construct old structure map, magmatic structural map and earth structure graph map.(2) The one of the feature of forecast technology of deposit model synthetically geological information is realized GIS in whole course.3. The study and practice of mineral resources evaluation based on SIGThe NGSIG provide base apply flat roof for our practice. Forecast technology of deposit model synthetically geological information provides techno thought and means. The concrete method and operation link being fit for plat roof are needed for practice.(1) Integration organize and manage of geological space dataBecause of the data distributed in four provinces node with different resource, different scale and different tectonic space data, integration organize and manage of geological space data are needed to pledge on the rails of demonstration.â‘ Integration describing of dataThe key of Integration describing of data is set up data model. The data model is a relation between data (entity) and data (entity) and formalize describe of leash regular. The data model regulates data content, data frame, data action and data meaning. The data model is set up for user according to geological survey data and practice. On the bases above, the geological survey information classify and coding rule are set up (including geological essential coding rule, graphic element, basic designation coding and graphic layer document naming rule).â‘¡Integration organize and manage of dataBased on the data above, basic data data-base and special data-base are set up, including basic data graphic layer 32 and special graphic layer 21.â‘¢Integration deal with dataThe data processing is one of the core segment of Integration organize and manage of data which are manly consolidate data Punjabi and expression of province node, meet border of graphic layer in different provinces and meet graphic layer dispose in different.â‘£Node arrange and issueThe node arrange of NGSIG are manly distributed in Beijing, six centers of great section (Tianjing, Nanjing, Shengyang, Yichang, Chengdou and Xian) 15 provinces geological survey yard. The demonstration borough in this paper is manly arranged bodes in Jiangsu, Anhui, Jiangxi and Hubei provinces.The issue and enroll of data are achieved by each node passing SIG node client end tool software, which are manly record data to SIG node server(among them,53 graphic layer of Jiangsu,51 graphic layer of Anhui,52 graphic layer of Jiangxi and 52 graphic layer of Hubei) and data enroll becoming available data of NGSIG. (2) Geological structure study and synthetically geological information drawingOre-forming geological structure study is the shoe pinches of forecast technology of deposit model synthetically geological information to resolve information non-equivalence between geological construction information and mineral resource forecast and to realize fine forecast by compiling sediment construct old structure map, magmatic structural map and earth structure graph map.According to the metallogenic theory of Cheng yu-chuan combined with correlation require of Forecast technology of deposit model synthetically geological information, the magmatic structural map and earth structure graph map are compiling. At the same time, we are compiling early-middle Trias sediment construct old structure map, middle-late Permian period Dalong-Changxin sediment construct old structure map, middle-late Permian period Gufeng-Wuxue sediment construct old structure map, middle-late Permian period Longtan-wujiapin sediment construct old structure map, middle-late Permian period Qixia sediment construct old structure map and middle-late Carboniferous-early Permian period sediment construct old structure map with the copper object layer.(3) Marker for predicting foundation and choiceMarker for predicting foundation and parameter choice confirmed base on exploration model. Ascertain of Marker for predicting foundation and parameter choice confirmed by ore-controlling factors and regional representative.According to the principle above,12 markers for predicting are set up by different method and means.Stratum:Trias, Permian, Carboniferous and Silurian;Magma:mostly Yanshanian intermediate-acidic rocks, as quartz monzodiorite porphyrite, quartz monzodiorite and porphyritic quartz monzodiorite;Sediment construct:middle Trias, middle-late Permian period Dalong-Changxin, middle-late Permian period Gufeng-Wuxue, middle-late Permian period Longtan-wujiapin, middle-late Permian period Qixia and middle-late Carboniferous-early Permian period six sediment constructPhysical exploration:physical exploration concluded structure, gravity anomaly, aeromagnetic anomaly and Concealed Rock Mass.Geochemical exploration:single element anomaly of Cu,Pb,Zn,Au;Remote sensing:linearity and ring structure by remote sensing interpretation.According to the study above, we introduce finally online evidence right based on SIG to forecast evaluation of middle-lower of Changjiang river demonstration and to get correspond results. The 18 representative modeling deposits all exist in forecast section finding new region recognized by experts.As mentioned above, the mineral resources evaluation method of middle-lower Changjiang river have stability theory base and adult technology based on SIG and late roof of NGISG supported by practicality data of four provinces in middle-lower Changjiang river and finally online evidence right. The system of forecast technology of deposit model synthetically geological information is set up by study and process practice. The forecast result may treat as an external result and an exact result based on system info driving by model data (impersonality, expert knowledge and basic theory).The study have quite important sense for mineral resources evaluation technology and method:â‘ The apace information grid establishing and application provide a new thought and approach to resolve availably distributing data and integration organize and manage of data means and approach, and to protect advantage of data manufacture. Information grid is development artery of future internet information technology. The space information grid would be current of geological information-based.â‘¡The forecast technology system of deposit model synthetically geological information put forward and foundation settle availably conquer disjoint between geological constitution information and mineral resources and information non-equivalence between model field and forecast field to come true fine forecast by new thought and technology. Now the method is application in the item< The important mineral resources potential evaluation and colligate> of geological survey bureau of China providing favorable theory base and method gist.