Tunnel wall geological logging method based on tunnel face

Abstract

The invention discloses a tunnel wall geological logging method based on a tunnel face, belongs to the technical field of tunnel geological logging, and can solve the problems that an existing logging method is low in efficiency and high in safety risk. The method comprises the following steps: S1, collecting geological information of a tunnel face of each construction section in a plurality of construction sections of a tunnel; s2, according to the three-dimensional design information of the tunnel and the geological information of each tunnel face, geological catalog maps of the two side walls of the tunnel are generated; and S3, according to the geological catalog maps of the two side walls, generating a tunnel wall geological catalog map of the tunnel. The method is used for geological logging of the tunnel wall.

Description

Technical Field

[0001] The present invention relates to a method for geological logging of tunnel wall based on tunnel face, belonging to the technical field of tunnel geological logging. Background Art

[0002] Geological logging of tunnel wall refers to recording the development of structural planes on the tunnel wall and describing the lithology of the tunnel wall during the construction of the tunnel, so as to provide reliable geological data for the subsequent construction of the tunnel.

[0003] Currently, geological logging of tunnel wall usually adopts manual logging method, which requires loggers to manually record relevant information in the tunnel chamber, resulting in low logging efficiency. At the same time, loggers work in the unsupported tunnel chamber for a long time, with high safety risks. Summary of the Invention

[0004] The present invention provides a method for geological logging of tunnel wall based on tunnel face, which can solve the problems of low efficiency and high safety risks of existing logging methods.

[0005] The present invention provides a method for geological logging of tunnel wall based on tunnel face, and the method includes: S1. Collect geological information of the face of each construction section of the tunnel. S2. Generate geological logging maps of the two side walls of the tunnel according to the three-dimensional design information of the tunnel and the geological information of each face. S3. Generate a geological logging map of the tunnel wall according to the geological logging maps of the two side walls.

[0006] Optionally, the geological information of the face includes the first outcrop trace formed by the structural plane to which the face belongs on the face.

[0007] Optionally, the S2 specifically includes: S21. Generate three-dimensional side wall models of the two side walls of the tunnel respectively according to the three-dimensional design information of the tunnel. S22. Generate geological logging maps of the two side walls of the tunnel according to the two three-dimensional side wall models and the first outcrop trace on each face.

[0008] Optionally, the S22 specifically includes: S221. Generate a three-dimensional structural plane model of the structural plane to which each face belongs according to the three-dimensional design information of the tunnel and the first outcrop trace on each face. S222. Generate geological logging maps of the two side walls according to the two three-dimensional side wall models and the three-dimensional structural plane model.

[0009] Optionally, the S222 specifically includes: Determine the intersection relationship between the three-dimensional structural plane model and the two three-dimensional sidewall models respectively; Generate geological logging maps of the two sidewalls according to the intersection relationship.

[0010] Optionally, generating geological logging maps of the two sidewalls according to the intersection relationship specifically includes: Generate the second outcrop trace of the structural plane to which each heading face belongs on the two three-dimensional sidewall models respectively according to the intersection relationship, and obtain two updated three-dimensional sidewall models; Generate geological logging maps of the two sidewalls according to the two updated three-dimensional sidewall models.

[0011] Optionally, generating geological logging maps of the two sidewalls according to the two updated three-dimensional sidewall models specifically includes: Perform two-dimensional conversion on the two updated three-dimensional sidewall models to generate geological logging maps of the two sidewalls.

[0012] Optionally, the specific content of S3 includes: S31. According to the spatial position relationship between the two sidewalls, symmetrically arrange the geological logging maps of the two sidewalls along the tunnel axis on the same plane graph, and set a reserved position between the geological logging maps of the two sidewalls according to the span of the top wall of the tunnel; S32. Generate the geological logging map of the top wall at the reserved position on the plane graph according to the geological logging maps of the two sidewalls to obtain the geological logging map of the tunnel wall.

[0013] Optionally, in S32, generating the geological logging map of the top wall at the reserved position on the plane graph according to the geological logging maps of the two sidewalls specifically includes: Draw the contour of the top wall and the third outcrop trace of the structural plane to which each heading face belongs on the top wall on the reserved position on the plane graph according to the geological logging maps of the two sidewalls to obtain the geological logging map of the top wall.

[0014] Optionally, the specific content of S3 includes: Generate the geological logging map of the top wall of the tunnel according to the three-dimensional sidewall models of the two sidewalls; According to the spatial position relationship between the top wall and the two sidewalls respectively, splice the geological logging map of the top wall and the geological logging maps of the two sidewalls to generate the geological logging map of the tunnel wall.

[0015] The beneficial effects that the present invention can produce include: The present invention collects geological information of multiple headings of a tunnel, generates geological logging maps of two side walls of the tunnel in combination with the three-dimensional design information of the tunnel, and further generates a geological logging map of the tunnel wall based on the geological logging maps of the two side walls, significantly improving the working efficiency of the tunnel wall geological logging and effectively reducing the safety risks of the logging personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flowchart of a tunnel wall geological logging method based on a tunnel heading according to an embodiment of the present invention; Figure 2 is a schematic diagram of a heading logging sketch according to an embodiment of the present invention; Figure 3 is a schematic diagram of a tunnel wall geological logging map according to an embodiment of the present invention; Figure 4 is a schematic diagram of a tunnel wall geological logging map including a bottom wall according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be described in detail below with reference to the embodiments, but the present invention is not limited to these embodiments.

[0018] An embodiment of the present invention provides a tunnel wall geological logging method based on a tunnel heading. As Figure 1 shown, the method includes: S1. Collect geological information of the heading of each construction section of the tunnel.

[0019] Specifically, the geological information of the heading includes the first outcrop trace formed by the belonging structural plane of the heading on the heading and the rock stratum information of the heading.

[0020] Specifically, the belonging structural plane of the heading can be one or more; correspondingly, the first outcrop trace can be one or more.

[0021] Specifically, the rock stratum information includes lithology, surrounding rock category, and the number, occurrence, width, and filling information of fissures, etc.

[0022] In practice, according to the on-site situation of a single construction section, the outline of the heading of the construction section can be drawn on the heading logging sketch as Figure 2 shown, and the corresponding first outcrop trace is drawn within the outline, and the corresponding rock stratum information is recorded on the heading logging sketch at the same time. Each heading should have a corresponding heading logging sketch.

[0023] S2. Generate geological logging maps of two side walls of the tunnel according to the three-dimensional design information of the tunnel and the geological information of each heading.

[0024] S2 may specifically include: S21. Generate 3D sidewall models of the two sidewalls of the tunnel according to the 3D design information of the tunnel.

[0025] Specifically, the 3D design information of the tunnel is usually included in the 3D design drawing of the tunnel. In this embodiment, the 3D design drawing of the tunnel is imported into the 3D geological modeling software, and the 3D geological modeling software can generate 3D sidewall models of the two sidewalls of the tunnel according to the 3D design information in the 3D design drawing.

[0026] Specifically, the 3D design drawing can be a CAD 3D design drawing, and the 3D geological modeling software can be CnGIM_ma software.

[0027] Specifically, in this embodiment, the CAD 3D design drawing of the tunnel is imported into CnGIM_ma software, and the "points and attitudes" function in CnGIM_ma software is used to draw 3D sidewall models of the two sidewalls.

[0028] Specifically, before importing the CAD 3D design drawing of the tunnel into CnGIM_ma software, in this embodiment, the position information of each heading face can also be marked in advance in the CAD 3D design drawing of the tunnel, and the position information of each heading face is also marked on the two generated 3D sidewall models. This facilitates the CnGIM_ma software to quickly obtain the relative positions of each heading face and the two 3D sidewall models in the subsequent steps.

[0029] Specifically, the position information of the heading face can be determined with reference to the advance stake number of the heading face.

[0030] Specifically, in order to more accurately draw the 3D structural plane model of the structural plane to which each heading face belongs in the subsequent steps, before importing the CAD 3D design drawing of the tunnel into CnGIM_ma software, in this embodiment, at the position of each heading face in the CAD 3D design drawing of the tunnel, a line segment perpendicular to the tunnel axis and equal in width to the cavern is drawn along the bottom edge of the heading face, and both sides of the midpoint of the line segment are evenly divided. The more the number of divisions, the higher the drawing accuracy of the 3D structural plane model.

[0031] S22. Generate geological logging maps of the two sidewalls of the tunnel according to the two 3D sidewall models and the first outcrop traces on each heading face.

[0032] S22 can specifically include: S221. Generate 3D structural plane models of the structural planes to which each heading face belongs according to the 3D design information of the tunnel and the first outcrop traces on each heading face.

[0033] Specifically, in this embodiment, information such as the trace length and dip of the first outcrop trace of each heading face is input into the CnGIM_ma software. Based on the position information of each heading face and the equally divided line segments in the imported CAD three-dimensional design drawing of the tunnel, and in combination with information such as the trace length and dip of the first outcrop trace of each heading face, the CnGIM_ma software can generate a three-dimensional structural plane model of the structural plane to which each heading face belongs.

[0034] Specifically, in this embodiment, the "point and attitude" function in the CnGIM_ma software is used to generate a three-dimensional structural plane model of the structural plane to which each heading face belongs.

[0035] S222. Generate geological logging maps of the two sidewalls based on the two three-dimensional sidewall models and the three-dimensional structural plane model.

[0036] S222 may specifically include: Determine the intersection relationships between the three-dimensional structural plane model and the two three-dimensional sidewall models respectively, and generate geological logging maps of the two sidewalls according to the intersection relationships.

[0037] Specifically, the CnGIM_ma software can determine the relative position relationships between the three-dimensional structural plane model of the structural plane to which each heading face belongs and the two three-dimensional sidewall models based on the position information of each heading face marked on the two three-dimensional sidewall models, and further determine the intersection relationships between each three-dimensional structural plane model and the two three-dimensional sidewall models.

[0038] Furthermore, the above-mentioned generation of geological logging maps of the two sidewalls according to the intersection relationships may specifically include: Generate the second outcrop traces of the structural plane to which each heading face belongs on the two three-dimensional sidewall models respectively according to the intersection relationships, to obtain two updated three-dimensional sidewall models; and generate geological logging maps of the two sidewalls based on the two updated three-dimensional sidewall models.

[0039] Specifically, according to the above-mentioned intersection relationships, the intersection lines between each three-dimensional structural plane model and the two three-dimensional sidewall models can be drawn, and this intersection line is the second outcrop trace of the structural plane on the three-dimensional sidewall model.

[0040] Furthermore, the above-mentioned generation of geological logging maps of the two sidewalls based on the two updated three-dimensional sidewall models may specifically include: Perform two-dimensional conversion on the two updated three-dimensional sidewall models to generate geological logging maps of the two sidewalls.

[0041] Specifically, in this embodiment, the "generate cross-section diagram" function of the CnGIM_ma software is used to perform a longitudinal section along the axial direction of the tunnel to obtain cross-section diagrams of the two updated three-dimensional sidewall models, and the two cross-section diagrams are the geological logging maps of the two sidewalls.

[0042] S3. Generate the geological record drawing of the tunnel wall based on the geological record drawings of the two side walls.

[0043] Specifically, S3 may include: S31. According to the spatial position relationship between the two side walls, symmetrically arrange the geological record drawings of the two side walls along the axial direction of the tunnel on the same plane graph, and set a reserved position between the geological record drawings of the two side walls according to the span of the top wall of the tunnel.

[0044] Specifically, along the tunneling direction of the tunnel and with the axial direction of the tunnel as the reference, the two side walls can be divided into the left side wall and the right side wall. In this embodiment, the geological record drawings of the two side walls are imported into CAD software, and the geological record drawing of the left side wall is rotated 180° in the CAD software, as Figure 3 shown. Then, align the two ends of the geological record drawings of the two side walls respectively according to the spatial position relationship between the two side walls, and reserve a spacing of 2b of the span of the top wall between the geological record drawings of the two side walls to form a reserved position, so as to realize the symmetric and spaced arrangement of the geological record drawings of the two side walls.

[0045] Specifically, when aligning the two ends of the geological record drawings of the two side walls, the positions corresponding to the starting stake number of the tunnel on the geological record drawing of each side wall can be determined first, and then the corresponding positions on the geological record drawings of the two side walls can be aligned to achieve the alignment of the two ends.

[0046] S32. Generate the geological record drawing of the top wall at the reserved position on the plane graph according to the geological record drawings of the two side walls to obtain the geological record drawing of the tunnel wall.

[0047] In the above S32, generating the geological record drawing of the top wall at the reserved position on the plane graph according to the geological record drawings of the two side walls may specifically include: Draw the outline of the top wall and the third outcrop trace of the structural plane to which each heading face belongs on the top wall at the reserved position on the plane graph according to the geological record drawings of the two side walls to obtain the geological record drawing of the top wall.

[0048] Specifically, in this embodiment, the two ends of the geological record drawings of the two side walls are connected to form the outline of the two ends of the top wall. Then, determine the first intersection point between the second outcrop trace formed by the structural plane to which a certain heading face belongs on the geological record drawing of the left side wall and the upper edge line of the top wall, and the second intersection point between the second outcrop trace formed by this structural plane on the geological record drawing of the right side wall and the lower edge line of the top wall. Finally, connect the first intersection point and the second intersection point to obtain the third outcrop trace of the structural plane to which this heading face belongs on the top wall. This method is applicable to both straight tunnels with a straight tunnel axis and curved tunnels with a curved tunnel axis, and has universality.

[0049] In addition, for a straight tunnel, the CnGIM_ma software can also be used to generate a geological logging map of the top wall.

[0050] Optionally, when the tunnel is a straight tunnel, S3 can specifically include: Generating a geological logging map of the top wall of the tunnel based on the 3D side wall models of the two side walls; According to the spatial position relationship between the top wall and the two side walls respectively, splicing the geological logging map of the top wall and the geological logging maps of the two side walls to generate a geological logging map of the tunnel wall.

[0051] Specifically, for a straight tunnel, based on the 3D design information of the tunnel and the 3D side wall models of the two side walls, and using the "generate cross-section diagram" function of the CnGIM_ma software, a cross-section diagram of the top wall can be generated, and this cross-section diagram is the geological logging map of the top wall. Then, the geological logging maps of the two side walls are symmetrically arranged along the axial direction of the tunnel, and a spacing is reserved between them according to the span of the top wall. Then, the geological logging map of the top wall is placed in the reserved spacing. Finally, the geological logging map of the top wall and the geological logging maps of the two side walls are aligned according to the starting stake number, and the geological logging map of the tunnel wall can be obtained.

[0052] Specifically, after S3, in this embodiment, formation information such as lithology, surrounding rock category, and the number, occurrence, width, and filling information of fissures can also be added to the geological logging map of the tunnel wall to supplement and improve the geological logging information of the tunnel wall. For example, Figure 3 f1 in represents the number of a certain structural plane, and the numbers 1-4 respectively represent different intersections of this structural plane with the tunnel wall.

[0053] Specifically, this embodiment can also use the foregoing method to generate a geological logging map of the bottom wall of the tunnel, as Figure 4 shown, so as to obtain a geological logging map of the tunnel wall that can simultaneously reflect the logging information of the top wall, bottom wall, and two side walls.

[0054] Furthermore, the geological logging map of the tunnel wall can be made more aesthetic and readable by adjusting the text size, text direction, text style, line type, etc.

[0055] By collecting the geological information of multiple headings of the tunnel and combining the 3D design information of the tunnel to generate the geological logging maps of the two side walls of the tunnel, and then generating the geological logging map of the tunnel wall based on the geological logging maps of the two side walls, the present invention significantly improves the working efficiency of tunnel wall geological logging and effectively reduces the safety risks of loggers.

[0056] The above are only several embodiments of the present application and do not impose any form of limitation on the present application. Although the present application is disclosed above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the scope of the technical solution of the present application, making some changes or modifications using the technical content disclosed above is equivalent to equivalent implementation cases and all fall within the scope of the technical solution.

Claims

1. A method for recording the geological conditions of a tunnel wall based on a tunnel face, characterized in that: The method comprises: S1. Collecting geological information of the tunnel face of each construction section in multiple construction sections of the tunnel; S2, generating geological catalog maps of two side walls of the tunnel according to the three-dimensional design information of the tunnel and the geological information of each tunnel face; S3. Generate a geological log map of the tunnel wall according to the geological log maps of the two side walls.

2. The method according to claim 1, characterized in that The geological information of the tunnel face includes a first exposed trace formed on the tunnel face by a structural surface to which the tunnel face belongs.

3. The method according to claim 2, characterized in that The S2 specifically includes: S21, generating three-dimensional side wall models of two side walls of the tunnel respectively according to the three-dimensional design information of the tunnel; S22. Generate geological logging maps of the two side walls of the tunnel according to the two three-dimensional side wall models and the first exposed trace line on each tunnel face.

4. The method according to claim 3, characterized in that The S22 specifically includes: S221, generating a three-dimensional structural surface model of the structural surface to which each tunnel face belongs according to the three-dimensional design information of the tunnel and the first exposed trace line on each tunnel face; S222. Generate geological catalog maps of the two side walls according to the two three-dimensional side wall models and the three-dimensional structural surface model.

5. The method according to claim 4, characterized in that The S222 specifically includes: Determining the intersection relationship between the three-dimensional structural surface model and the two three-dimensional side wall models respectively; A geological log map of the two side walls is generated according to the intersection relationship.

6. The method according to claim 5, characterized in that Generating geological logging maps of the two side walls according to the intersection relationship specifically includes: Generating second exposed traces of the structural surface to which each tunnel face belongs on the two three-dimensional sidewall models respectively according to the intersection relationship, to obtain two updated three-dimensional sidewall models; A geological log map of the two sidewalls is generated based on the two updated three-dimensional sidewall models.

7. The method according to claim 6, characterized in that The geological log maps of the two sidewalls were generated based on the two updated 3D sidewall models, including: The two updated three-dimensional sidewall models are converted into two dimensions to generate geological log maps of the two sidewalls.

8. The method according to claim 1, characterized in that The S3 specifically includes: S31, according to the spatial position relationship between the two side walls, the geological log maps of the two side walls are arranged symmetrically along the axial direction of the tunnel on the same plane, and a reserved position is arranged between the geological log maps of the two side walls according to the span of the top wall of the tunnel; S32. Generate a geological logging map of the top wall at a reserved position on the plan view according to the geological logging maps of the two side walls to obtain a geological logging map of the tunnel wall.

9. The method according to claim 1, characterized in that: In the step S32, the geological logging map of the top wall is generated at a reserved position on the plan view according to the geological logging maps of the two side walls, and specifically includes: According to the geological logging maps of the two side walls, the outline of the top wall and the third exposed trace line of the structural surface belonging to each tunnel face on the top wall are drawn at the reserved position on the plan view to obtain the geological logging map of the top wall.

10. The method according to claim 3, characterized in that The S3 specifically includes: Generating a geological log map of the top wall of the tunnel based on the three-dimensional side wall models of the two side walls; According to the spatial positional relationship between the top wall and the two side walls, the geological log map of the top wall and the geological log maps of the two side walls are spliced ​​to generate the geological log map of the tunnel wall.

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