Study On 3D Modeling Of Geological Body Based On Plane Geological Map And Geological Section Map

With the development of computer graphics technology,the current research on the two-dimensional world can no longer meet people's needs,and has begun to expand into the three-dimensional field.Three-dimensional visualization technology is the use of computer technology to simulate objects in the three-dimensional world,so that it can express complex information such as the appearance and internal structure of three-dimensional objects.At present,people have developed a variety of methods for 3D geological modeling,but the data processing process is more complicated.This article intends to use two different basic data of plane geological map and geological section map for three-dimensional geological modeling,and try to establish a simple model building method.Geological maps are commonly used in geology to show underground geological formations.A plan map is a type of geological map that uses field exploration and collection of available information as information and projects it proportionally onto topographic maps to reflect the geology of the area.Its drawing process combines the professional experience and knowledge of geologists,and can clearly show the geological structure,formation order,sediment thickness and so on.Therefore,in the absence or even lack of drilling data in the study area,it is an effective substitute to take the plan geological map as the basic data of three-dimensional geological modeling in the area.The plan geological map indirectly expresses shallow geological information by means of symbols and annotations,and this paper intends to construct the formula of geological body boundary calculation through these symbolized languages,restore the underground extension form of geological body,construct its solid model by means of geological surface boundary and inferred underground extension boundary,and fuse in space to produce a whole three-dimensional geological model.Parallel profiles are also important data for constructing three-dimensional geological models,and the key to constructing geological models with this type of data is to find a reasonable correspondence between the contour nodes of adjacent profiles so that they can be connected together one by one to form a spatial closure.However,the actual geological structure is often very complex,it is difficult to obtain a geometric perfect correspondence between the contours of multiple profiles,the modeling process is cumbersome,this paper for this problem using GOCAD software to create reservoir grid model workflow process combined with other tools to establish a simple method of using profiles to create geological models.Finally,combining the two data sources to give research examples,using the direct calculation method of plan geological map,the experts' relevant geological experience knowledge is integrated into the modeling process to carry out three-dimensional geological modeling,and expand the data source of 3D modeling.Using the profile modeling method,a three-dimensional geological overall model with faults and coal seams is established,which contains not only surface morphological information,but also the internal attribute information of rock formations,and can be analyzed for spatial applications.Figure[47]table[2]reference[77]...