Research And Application Of Complex Subsurface Construction's Simulation

Engineering geology of the building has become the most urgent task of China's national economic construction,engineering geology industry and management of scientific and technological innovation to enhance the level of imminent,more and more attention.Digital hydraulic and hydroelectric engineering refers to the scope of work in the project area in order to coordinate information to establish the main line,project area will be a variety of data sets combine to build into a three-dimensional geological model.It can describe every point in the project area all of the information,by the coordinates of organizations and stored,and provide effective,convenient and intuitive means of search and display means,so that the staff can be fast and accurate,full and complete understanding of the project area and the use of information. Applied 3D can see to turn numerical mineral mountain of the technique construction before,the analysis of the geology data explains to all limit at two expression method of the 3D,static states, its people are direct,integrity,accurate comprehension and feel the underground geology circumstance results in a difficulty.3D geology's setting up the mold usage science calculation can see to turn a technique to come to carry on 3D emersion to the geologic strata and its environment information,can keep the view ground to describe the underground complicated geology structure circumstance.This study is based on the GeoView3D visualization platform.3D geoscience modeling software is the computer technology in the geology the application key point and the development direction,it analyzes the massive geological data and the geological personnel the judgement result to abstract as the visible geological model,causes the complex spatial relations visible,through to model revolving,watches the model from the different angle,the image is direct-viewing.GeoView platform has the strong 3D modeling and analyzing functions which provides the basic platform for this paper.GeoView3D uses a modified B-Rep(Boundary Representation) data model "Two Entity " data structure which divides space 3D entities into Line Object, Polygon Object,Surface Object,Text Object,and Volume Object,etc.The 3D model entity consists of large number of modules.Each module must not have full independent faces.All adjacent modules have a public face,i.e.in the "Two Entity" data structure.The two faces of the two adjacent modules contact merger into a face.The characteristic of the "Two Entity" structure, not only benefits the inside space location and topological relations maintenance of 3D entities, but also the further 3D vector shear.It provides a basic guarantee for the geological profile making in this paper.This thesis at a great deal of investigation of foundation up,discussed the domestic and international 3D mineral mountain construction and 3D geology to set up the development condition and trend of the mold in detail,the existent problem,and then put forward is several according to the GIS mineral body set up the implement technique and system of the mold to set up a project.The thesis introduced the meaning of the topic first,the geology body 3D set up related technique background of mold,then analyze the domestic and international development present condition of this topic,develop the trend and existent problem,and did to correspond of comment,summary and analyze to carry on the mineral body several to set up the key technique of the mold,include several of the mineral body model,the mineral body several set up a 3D data of the mold mineral body organization a method,and in this foundation go forward several application for go analysis,establish the mineral body several set up the point and the crux place of with the mold application.Made sure the research contents of this thesis on this foundation.This paper has been studied and discussed in the following aspects:1.Based on 2D outline modeling of complex subsurface construction2D outline line heavy 3D surface is the mineral body is several set up a mold of important technique means,this thesis carried on a detailed discussion to this,to the problem of with possible emergence in a few heavy:Outline to should the problem,outline put together to connect to analyze several kinds to resolve a method with the outline branch problem,putting forward the in keeping with geology body section to set up heavy calculate way of the outline line of the mold usage,in the 3D Topo of the data rush toward the structure lead to go into the management method of the GIS attribute data,distinct the layer and the non- layer is two kinds of to make differently by artifice,tally up to go it to set up a mold step effectively.2,Complex subsurface construction's 3D geological model analysisGeological structure of 3D visual simulation,and analysis of the complex subsurface construction's block the stability of surrounding rock,the joints can fracture the rock slope minimum shear strength of the search slip surface,to solve the stability of slip surface safety factor,used to guide the actual design of the project.The two issues before and after the research phase,which will run research and development of exploration engineering module for water resources and hydropower arrangement based on the three-dimensional geological model for the late.The overall aim is to have hydraulic and hydroelectric engineering on the basis of three-dimensional model,combined with the complexity of the geological layout of the characteristics of caverns,to establish a complete module of the complex subsurface construction's model and analysis,a rapid method to improve the efficiency and lower development costs,so it has important practical significance.Through the whole verification and test,the profile drawing module was made based on the GeoView3D.The module was applied in the following hydropower projects:Miao Wei Hydropower Station in Yunnan,Crane Ertan Hydropower Station in Sichuan,Jinping Hydropower Station in Sichuan.They have achieved the desired results.Innovation results have been made as following:1.Combination of technical characteristics of 3DGIS,the use of complex subsurface construction and geological body three-dimensional geological model of the spatial distribution of the relationship,effective solution of the complex subsurface construction surrounding rock stability analysis,through spatial analysis,access to be able to prove the stability of surrounding rock of the visual data.2.The module the first having formed a independent,entire exploration arrangement in "three-dimensional hydraulic and hydroelectric engineering information system ",can be easily carried out on the underground cavern visualization.The end of the article introduced the research result of the thesis and existence of shortage, prospect to will study further in the future with investigate of direction.