CN104408755A - Geologic plane graph drawing method based on structural plane attitude and geologic observation spot coordinate - Google Patents

Abstract

The invention relates to the drawing data processing technology, thereby solving problems that the precision of the rock stratum boundary line and the structural plane trace line are low in the geologic plane graph drawn at the field under the circumstances that a few geologic observation spots exit and the topography is complex. The method comprises the following steps that: an exposed geologic observation spot of a structural plane is selected and the coordinate of the spot is measured, a structural plane attitude is determined according to the coordinate of the exposed spot, and after a geologic observation spot coordinate is inputted by a user, the system draws a first auxiliary line along the moving direction of the structural plane based on the geologic observation spot; parallel lines of the moving direction lines are drawn by deviating from the inclination direction, and the space between the parallel lines is expressed by the formula: delta H/tan angle beta, wherein the delta H expresses a contour line altitude difference and the beta expresses a structural plane inclination angle; according to the contour line elevation rising direction, an intersection point of the contour line and the first auxiliary line is determined; and parallel auxiliary lines of the moving direction lines are drawn at the same direction as the inclination direction, wherein the space between the parallel auxiliary lines is identical with that of the parallel line, intersection points of the contour line and the parallel auxiliary lines are determined according to the contour line elevation reduction direction and are connected, and then the first auxiliary line and the parallel auxiliary lines are deleted.

Description

The occurrence of structure based face and geology point coordinate draw the method for geological map

Technical field

The present invention relates to draw data treatment technology, particularly a kind of method of drawing geological map according to the occurrence of structure based face and geology point coordinate.

Background technology

Drawing geological map is one of geological basic content, and geological map requires to sketch at the scene, need take into full account occurrence and change thereof, with or without factors such as tomography cuttings when bedding margin of wherein sketching, structural plane trace.When occurring for having coombe or ridge, during connection boundary line of sketching, " V " font rule should be used to carry out according to rock stratum (tomography) occurrence, terrain feature.In actual applications, if boundary line exposure is good, actual measurement geology dot spacing is less, can accurate Drawing planimetric map according to said method.But in real work, usually occur that, as geology is appeared few, sometimes only can record a ground particle, other position is many to be covered by exterior portion overlayer; And with a varied topography, cheuch is alternate, and " V " font rule has only carried out qualitative regulation, and scene is difficult to the situations such as accurate assurance, and the experience that often can only depend on geological personnel is sketched, and therefore subjective randomness is comparatively large, mapping result poor accuracy.

Summary of the invention

Technical matters to be solved by this invention is: at marginally particle and with a varied topography, bedding margin in the geological map sketched in scene, structural plane trace precision are lower.

The technical scheme that the present invention solves its technical matters is to provide a kind of method that structure based face occurrence and geology point coordinate draw geological map, and the method comprises the steps:

A, selecting structure face exposure ground particle measure its coordinate and structural plane occurrence;

After B, user input geology point coordinate, when local particle overlaps with arbitrary level line, system does the first boost line by this ground particle along structural plane trend, when local particle does not overlap with level line, adopts interpolation to determine the first boost line;

C, deviate from tendency, do the parallel lines of boost line, parallel lines spacing is wherein △ H is the level line discrepancy in elevation, and β is structural plane inclination angle;

D, raise direction according to level line elevation, determine the intersection point of level line and parallel boost line;

E, do the parallel boost line of trend line in the same way with tendency, parallel boost line spacing is identical with described parallel lines spacing, according to level line elevation reduction direction, determines the intersection point of level line and parallel boost line, and line, delete the first boost line and parallel boost line.

Particularly, the concrete grammar of step D is as follows:

With ground particle for reference point, raise direction along level line elevation and search, determine the intersection point that Article 1 relatively raises level line and Article 1 and deviates from the parallel lines of trend line.

The invention has the beneficial effects as follows: compared with existing method for drafting, method provided by the invention can be drawn according to the experience of operating personnel, and the planimetric map drawn out is more accurate.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of embodiment.

Embodiment

Be described further technical scheme of the present invention below in conjunction with drawings and Examples, embodiment, not in order to limit the protection domain of the claims in the present invention, only clearly understands inventive concept of the present invention in order to help reader.

The present invention is directed at marginally particle and with a varied topography, bedding margin in the geological map sketched in scene, the problem that structural plane trace precision is lower, provide a kind of structure based face occurrence and geology point coordinate to draw the method for geological map,

First the method needs coordinate and the structural plane occurrence of determining open country particle, and then base area particle coordinate and structural plane occurrence are drawn and obtained final geological map.The method specific implementation process is as follows: first, exposure ground particle in selecting structure face also measures its coordinate and structural plane occurrence, after user inputs geology point coordinate afterwards, after user inputs geology point coordinate, when local particle overlaps with arbitrary level line, system does the first boost line by this ground particle along structural plane trend, when local particle does not overlap with level line, adopts interpolation to determine the first boost line; Secondly, deviate from tendency, do the parallel lines of trend line, parallel lines spacing is wherein △ H is the level line discrepancy in elevation, and β is structural plane inclination angle.Then, raise direction according to level line elevation, determine the intersection point of level line and the first boost line.Finally, do the parallel boost line of trend line in the same way with tendency, parallel boost line spacing is identical with described parallel lines spacing, according to level line elevation reduction direction, determines the intersection point of level line and parallel boost line, and line, delete the first boost line and parallel boost line.

Embodiment

Lift an example below to describe making an explanation property of said method.

Centrum as shown in Figure 1, suppose that ABED plane is landform face, wherein, straight line AB, DE are respectively the altitude traverse on this face.BCFE plane is structural plane, crossing with landform face, and wherein, BC, EF are respectively this face two trend lines crossing with altitude traverse.A ˊ B ˊ, D ˊ E ˊ is respectively the horizontal projection line of straight line AB, DE, i.e. altitude traverse on planimetric map, and B ˊ C ˊ, E ˊ F ˊ are the plane projection line of straight line BC, EF, and according to the definition of the trend of structural plane, it is consistent that these two projection lines and structural plane move towards direction.Structural plane needed for us is B ˊ E ˊ at planimetric map exposure trace.

Suppose known 1 B ˊ (actual measurement ground particle), only demand obtains the position of E ˊ, B ˊ E ˊ line.As seen from the figure, ask for the position of E ˊ by the trend line of structural plane and the intersection point of formline, wherein structural plane move towards known, only demand obtains the distance between two trend line B ˊ C ˊ, E ˊ F ˊ, i.e. the length of E ˊ M ˊ, by geometric relationship, wherein, EN is the difference of elevation of two altitude traverses, known, EM ⊥ BC, NM ⊥ BC, then ∠ EMN is the inclination angle of structural plane, known, then E ˊ M ˊ can ask.

Below with one ground particle describe this layer of embodiment.

1) mark actual measurement ground particle on AutoCAD plane topomap, does first boost line by this point along structural plane trend.

Level line elevation spacing is 10m, actual measurement ground particle positional structure face occurrence 70 ° of ∠ 40 °.

2) deviate from tendency, do the parallel lines of trend line, parallel lines spacing is wherein △ H is the level line discrepancy in elevation, and β is structural plane inclination angle.

Parallel lines spacing calculates by aforementioned condition, and △ H=10m, β=40 °, then spacing is

3) raise direction according to level line elevation, determine the intersection point of level line and boost line.

To survey ground particle for reference point, raise direction along level line elevation and search, determine the intersection point that Article 1 relatively raises level line and Article 1 and deviates from the parallel lines of trend line, the like, search the two or three intersection point respectively, and line.

5) remove boost line, then obtain required planimetric map.

Claims (2)

1. the occurrence of structure based face and geology point coordinate draw the method for geological map, it is characterized in that, comprise the steps:

A, selecting structure face exposure ground particle measure its coordinate and structural plane occurrence;

After B, user input geology point coordinate, when local particle overlaps with arbitrary level line, system does the first boost line by this ground particle along structural plane trend, when local particle does not overlap with level line, adopts interpolation to determine the first boost line;

C, deviate from structural plane tendency, do the parallel lines of trend line, parallel lines spacing is wherein △ H is the level line discrepancy in elevation, and β is structural plane inclination angle;

D, according to level line elevation raise direction, determine the intersection point of level line and the first boost line;

E, do the parallel boost line of trend line in the same way with tendency, parallel boost line spacing is identical with described parallel lines spacing, according to level line elevation reduction direction, determines the intersection point of level line and parallel boost line, and line, delete the first boost line and parallel boost line.

2. structure based face occurrence as claimed in claim 1 and geology point coordinate draw the method for geological map, and it is characterized in that, the concrete grammar of step D is as follows:

With ground particle for reference point, raise direction along level line elevation and search, determine the intersection point that Article 1 relatively raises level line and Article 1 and deviates from the parallel lines of trend line.