1 thought on “cheap wholesale body jewelry Geological model refinement”
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wholesale trendy costume jewelry ny ny In areas that do not suffer a large geological effect, the geological structure formed by the natural sedimentation is usually a continuous state (Gao Yang et al., 2005). Due to the sparseness of geological sampling, the geological model is established directly by the drilling data. The connection between the drills is completely linear, rough, and does not conform to the actual situation of the underground layer. For example, in order to study regional groundwater distribution, Canada has established three -dimensional geological models containing groundwater in a area with thousands of drilling records and faces considerable difficulties (Logan et al., 2001; Sharpe e tal., 2002; ET Ali ., 2003), not to mention only dozens of to hundreds of drilling projects. The use of a certain interpolation method can make the geological model continuously and more in line with the actual distribution characteristics of the strata. 3.4.2.1 Natural neighbor (NNI) The natural adjacent interpolation method is an interpolation method based on Voronoi diagram. This method has a good effect on processing the irregular observation data of the highly discrete distribution on the space and describing the drastic changes of the data on the space scale. The Voronoi chart is a commonly used non -structured grid. Each grid unit that is cut is called the Voronoi unit (the dotted line in Figure 3.23). In the non -structured grid of the Voronoi graph, the adjacent node of the Voronoi unit corresponding to each original node is called the natural adjacent point (NN). Node X1, X2, X3, X4, X5, X6 of the border. FIG. 3.23 Natural adjacent area of the insertion point The natural adjacent connection interpolation method is to calculate the interpolation result of the node based on the contribution rate of the interpolation point function value of the interpolation point function, thereby constructing the interpolation format: If digital underground space and engineering three -dimensional geological modeling and application research Among them, f (x) is the physical value value of the interpolation point X; The number of natural adjacent points for X; FI is the physical value of the node XI; ϕi (x) is the interpolation base function of the corresponding node XI. 3.4.2.2 The virtual drilling method based on natural adjacent interpolation It use the interpolation method to refine the initial geological model. In order to maintain the consistency of the GTP data model To achieve the detailed model. At the same time, in order to maintain the consistency of the topological relationship between drilling, the hole coordinates of the virtual drilling hole during interpolation are still met with the DELAUNAY criteria with the actual drilling hole. Based on this requirement, the Delaunay subdivision method is used to insert virtual drilling. The insertion process of the entire virtual drill is shown in Figure 3.24. In the DELAUNAY triangular grid composed of the initial drilling point (Figure 3.24A), insert a virtual drill point at the point of the triangle unit V1V2V3. As a result of the section of the section, you can obtain the natural adjacent area (Figure 3.24C) of the dot P using 0-ORBIT. Figure 3.24D The high -primary attribute value of each drilling hole inserted in the virtual drill insertion is determined by interpolation by interpolation by interpolation by the corresponding layer of the natural adjacent drill. In this way, a virtual drilling is completely determined by the adjacent drilling, which can avoid errors above the upper level by the general interpolation method, which is suitable for the more discrete geological data field expression. 3.4.2.3 The geological model after inserting the virtual drill Bying a certain triangle unit grid size, using Delaunay segmentation technology, establishing TIN that meets specific needs, and then through the above -mentioned naturally adjacent interpolations Insert an appropriate amount of virtual drilling to generate the encrypted three -dimensional geological model (Figure 3.25). The geological model settings before and after encryption set a certain sectional position (A-A ′ in Figure 3.25). If Figure 3.24 The formation of the formation of virtual drill a. The delaunay triangle of the initial drilling point; b. Area; d. Establish virtual drilling according to the drilling of the natural adjacent adjacent Figure 3.25 Insert the three -dimensional geological model after inserting the virtual drilling hole Figure 3.26 Insert the virtual drilling comparison a. Model cutting diagram; b. The encrypted model cutting diagram 3.4.2.4 Stranger pointing treatment The method of establishing geological models based on drilling data is directly established. Destroyed to the neighboring drilling.如图3.13所示，地层1在钻孔B、C处存在，而在钻孔A处缺失，认为地层1在钻孔A处尖灭，即地层1厚度分布从钻孔B到钻孔A直接Linear decreases to zero thickness. This treatment method is also called "Drilling Pole Point" (Zhang Fang, 2006). In the three -dimensional space, the use of such treatment methods will tend to be infinitely small (Figure 3.27A), which is obviously not actual. In the actual project, when geological personnel are treated with pointed extermination, they mostly use "drilling between the peculiarity", that is, it is believed that the pointed extermination occurs at a certain position between the two drills. Or 1/3, the specific value is based on experience. This processing method in the project is that the spatial distribution of strata at a certain drill is based on a natural adjacent area of drilling. Figure 3.27 Drilling Tips During the Division of Drilling As shown in Figure 3.27A, Stranger 1 is destroyed at 2 drilling holes. According to the traditional processing method, a zero -thicker point will be formed. After inserting a number of virtual drilling, there are virtual drilling 2 and 5 on the left and back side of the drill 2, and the strata 1 will be destroyed from the pointed hole 1 to the virtual drill 4 and the drill 2 pointed to the virtual. Drilling 5. In this way, the pointed area of Stranger 1 in the 2nd is a natural adjacent area, so that the new distribution area of Stranger 1 and 2 is shown in Figure 3.27B. FIG. 3.28A is a layer model after inserting a number of virtual drilling. The model is not processed according to the natural adjacent to the extermination problem. Naturally adjacent to deal with the problem of pointed out. It can be seen that a sharp -cut area is formed around the surrounding peculiar drilling.
wholesale trendy costume jewelry ny ny In areas that do not suffer a large geological effect, the geological structure formed by the natural sedimentation is usually a continuous state (Gao Yang et al., 2005). Due to the sparseness of geological sampling, the geological model is established directly by the drilling data. The connection between the drills is completely linear, rough, and does not conform to the actual situation of the underground layer. For example, in order to study regional groundwater distribution, Canada has established three -dimensional geological models containing groundwater in a area with thousands of drilling records and faces considerable difficulties (Logan et al., 2001; Sharpe e tal., 2002; ET Ali ., 2003), not to mention only dozens of to hundreds of drilling projects. The use of a certain interpolation method can make the geological model continuously and more in line with the actual distribution characteristics of the strata.
3.4.2.1 Natural neighbor (NNI)
The natural adjacent interpolation method is an interpolation method based on Voronoi diagram. This method has a good effect on processing the irregular observation data of the highly discrete distribution on the space and describing the drastic changes of the data on the space scale. The Voronoi chart is a commonly used non -structured grid. Each grid unit that is cut is called the Voronoi unit (the dotted line in Figure 3.23). In the non -structured grid of the Voronoi graph, the adjacent node of the Voronoi unit corresponding to each original node is called the natural adjacent point (NN). Node X1, X2, X3, X4, X5, X6 of the border.
FIG. 3.23 Natural adjacent area of the insertion point
The natural adjacent connection interpolation method is to calculate the interpolation result of the node based on the contribution rate of the interpolation point function value of the interpolation point function, thereby constructing the interpolation format:
If digital underground space and engineering three -dimensional geological modeling and application research
Among them, f (x) is the physical value value of the interpolation point X; The number of natural adjacent points for X; FI is the physical value of the node XI; ϕi (x) is the interpolation base function of the corresponding node XI.
3.4.2.2 The virtual drilling method based on natural adjacent interpolation
It use the interpolation method to refine the initial geological model. In order to maintain the consistency of the GTP data model To achieve the detailed model. At the same time, in order to maintain the consistency of the topological relationship between drilling, the hole coordinates of the virtual drilling hole during interpolation are still met with the DELAUNAY criteria with the actual drilling hole. Based on this requirement, the Delaunay subdivision method is used to insert virtual drilling.
The insertion process of the entire virtual drill is shown in Figure 3.24. In the DELAUNAY triangular grid composed of the initial drilling point (Figure 3.24A), insert a virtual drill point at the point of the triangle unit V1V2V3. As a result of the section of the section, you can obtain the natural adjacent area (Figure 3.24C) of the dot P using 0-ORBIT. Figure 3.24D The high -primary attribute value of each drilling hole inserted in the virtual drill insertion is determined by interpolation by interpolation by interpolation by the corresponding layer of the natural adjacent drill. In this way, a virtual drilling is completely determined by the adjacent drilling, which can avoid errors above the upper level by the general interpolation method, which is suitable for the more discrete geological data field expression.
3.4.2.3 The geological model after inserting the virtual drill
Bying a certain triangle unit grid size, using Delaunay segmentation technology, establishing TIN that meets specific needs, and then through the above -mentioned naturally adjacent interpolations Insert an appropriate amount of virtual drilling to generate the encrypted three -dimensional geological model (Figure 3.25).
The geological model settings before and after encryption set a certain sectional position (A-A ′ in Figure 3.25).
If Figure 3.24 The formation of the formation of virtual drill
a. The delaunay triangle of the initial drilling point; b. Area; d. Establish virtual drilling according to the drilling of the natural adjacent adjacent
Figure 3.25 Insert the three -dimensional geological model after inserting the virtual drilling hole
Figure 3.26 Insert the virtual drilling comparison
a. Model cutting diagram; b. The encrypted model cutting diagram
3.4.2.4 Stranger pointing treatment
The method of establishing geological models based on drilling data is directly established. Destroyed to the neighboring drilling.如图3.13所示，地层1在钻孔B、C处存在，而在钻孔A处缺失，认为地层1在钻孔A处尖灭，即地层1厚度分布从钻孔B到钻孔A直接Linear decreases to zero thickness. This treatment method is also called "Drilling Pole Point" (Zhang Fang, 2006). In the three -dimensional space, the use of such treatment methods will tend to be infinitely small (Figure 3.27A), which is obviously not actual. In the actual project, when geological personnel are treated with pointed extermination, they mostly use "drilling between the peculiarity", that is, it is believed that the pointed extermination occurs at a certain position between the two drills. Or 1/3, the specific value is based on experience. This processing method in the project is that the spatial distribution of strata at a certain drill is based on a natural adjacent area of drilling.
Figure 3.27 Drilling Tips During the Division of Drilling
As shown in Figure 3.27A, Stranger 1 is destroyed at 2 drilling holes. According to the traditional processing method, a zero -thicker point will be formed. After inserting a number of virtual drilling, there are virtual drilling 2 and 5 on the left and back side of the drill 2, and the strata 1 will be destroyed from the pointed hole 1 to the virtual drill 4 and the drill 2 pointed to the virtual. Drilling 5. In this way, the pointed area of Stranger 1 in the 2nd is a natural adjacent area, so that the new distribution area of Stranger 1 and 2 is shown in Figure 3.27B.
FIG. 3.28A is a layer model after inserting a number of virtual drilling. The model is not processed according to the natural adjacent to the extermination problem. Naturally adjacent to deal with the problem of pointed out. It can be seen that a sharp -cut area is formed around the surrounding peculiar drilling.