A method, terminal and storage medium for selecting the location of a tunnel inclined shaft

Abstract

The present invention discloses a method for selecting a tunnel inclined shaft site, a terminal and a storage medium, and relates to the technical field of tunnel inclined shaft construction. The method comprises the following steps: obtaining a three-dimensional surface model of a tunnel site area and a spatial axis of a tunnel, formulating a pile number and coordinates for setting up an underground fan room in the three-dimensional construction model, and formulating a longitudinal slope value of the inclined shaft; constructing an inverted cone with the coordinates of the pile number as the vertex and the pile number as the cone top; the longitudinal slope value of the inclined surface of the inverted cone is the proposed longitudinal slope value of the inclined shaft; extracting the intersection line between the cone surface of the inverted cone and the three-dimensional ground surface, and determining the shortest distance connection line between the intersection line and the pile number of the underground fan room; adopting this scheme, the intersection line of the cone surface and the ground line can be determined based on the three-dimensional spatial relationship by using a spatial mapping method, and the shortest inclined shaft axis and the hole position can be determined intuitively and accurately. In general, the position is unique, thereby avoiding multiple trial calculations manually operated in a two-dimensional plane.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel inclined shaft construction, and in particular to a tunnel inclined shaft site selection method, a terminal and a storage medium. Background Art

[0002] For extra-long highway tunnels with a length greater than 6 km, inclined shaft ventilation is often used to assist in the construction of the main tunnel when environmental and topographical conditions permit. In order to minimize the scale and cost of inclined shaft construction, it is necessary to find the shortest inclined shaft solution within the maximum allowable longitudinal slope.

[0003] In the existing technology, the conventional practice is to first determine a specific pile number after selecting the pile number section range for the underground fan room layout according to the ventilation design plan, and then manually select the location of the inclined shaft opening that can be exposed on the topographic map, such as a relatively low elevation location such as a surface valley, and reversely calculate the longitudinal slope of the inclined shaft based on the three elements of the pile number design elevation, the opening elevation, and the inclined shaft length (plane projection). When the longitudinal slope is close to the maximum allowable longitudinal slope of 12%, it is the optimal inclined shaft opening position corresponding to the pile number. The above method is used to respectively calculate the inclined shaft schemes corresponding to a certain pile number spacing within the allowable section range of the underground fan room, and finally comprehensively select the scheme with the shortest inclined shaft. Since the manually selected opening position has two parameters of horizontal distance and elevation difference from the fan room, the reversed longitudinal slope often deviates from the predetermined longitudinal slope, resulting in the above process requiring multiple trial calculations, which is very cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to provide a tunnel inclined shaft site selection method, terminal and storage medium. By adopting this scheme, the intersection line of the cone surface and the ground line can be determined based on the three-dimensional spatial relationship using a spatial drawing method, and the shortest inclined shaft axis and the opening position can be determined intuitively and accurately. In general, this position is unique, thereby avoiding multiple manual calculations in a two-dimensional plane.

[0005] The present invention is achieved through the following technical solutions:

[0006] A method for selecting a tunnel inclined shaft site, the method comprising the following steps:

[0007] Obtain a three-dimensional surface model of the tunnel site and the tunnel spatial axis, and determine the stake number and coordinates for the underground fan room in the three-dimensional construction model, as well as the longitudinal slope value of the inclined shaft;

[0008] An inverted cone is constructed with the coordinates of the pile number as the vertex and the pile number as the cone top; the longitudinal slope value of the inclined surface of the inverted cone is the proposed longitudinal slope value of the inclined shaft;

[0009] Extract the intersection line between the inverted cone surface and the three-dimensional ground surface, and determine the shortest distance connecting line between the intersection line and the pile number of the underground fan room; the intersection point of the connecting line and the intersection line is the end point of the inclined shaft, which is the shortest inclined shaft direction that meets the longitudinal slope requirements of the inclined shaft.

[0010] Compared with the existing technology, the manually selected tunnel entrance position has two parameters of horizontal distance and elevation difference from the fan room. The inverse calculated longitudinal slope often deviates from the predetermined longitudinal slope, resulting in the above process requiring multiple trial calculations, which is a very cumbersome problem. This solution provides a tunnel inclined shaft site selection method that can obtain the optimal tunnel entrance position based on three-dimensional spatial relationships and a mapping method. In its specific method steps, first obtain a three-dimensional construction model of the tunnel site surface, and then determine the initial underground fan position based on the ventilation design of the operation plan. The underground fan position corresponds to the tunnel design axis pile number, that is, the pile number is located at the underground fan position, and then determine its elevation and inclined shaft longitudinal slope value; in fact, at the same pile number, all inclined shaft axes are actually an inverted Cone surface, therefore, after determining the longitudinal slope value of the inclined well, an inverted cone is constructed based on the longitudinal slope value of the inclined well and with the pile number coordinate as the vertex, wherein the slope of the inverted cone, that is, the longitudinal slope value of the side, is the longitudinal slope value of the inclined well; and after constructing the inverted cone, there is an intersection line between the slope of the inverted cone and the three-dimensional ground surface. At this time, the distance line segment between any point in this intersection line and the pile number is determined to be the shortest distance line segment. Through this shortest distance line segment, the axis of the inclined well can be determined, and the intersection point between the shortest distance line segment and the three-dimensional ground surface is the inclined well opening; through the above steps, the intersection line between the cone surface and the ground surface is determined by the drawing method, which can accurately determine the shortest inclined well axis and its opening position, avoiding multiple manual verifications in the two-dimensional plane.

[0011] Further optimization, after obtaining the three-dimensional construction model of the tunnel site, also includes the following steps: after deleting the graphics elements other than the contour lines in the three-dimensional construction model and the contour lines within the range where inclined shaft outcrops are not allowed, the remaining contour lines are extracted to obtain a new three-dimensional space plane; in this scheme, since there are a large number of other contour lines and graphics elements in the tunnel site area in the three-dimensional construction model, in order to improve efficiency, it is necessary to process the topographic map within the range where inclined shaft openings can be arranged in the tunnel site area in the three-dimensional construction model. Within this range, the graphics elements other than the contour lines are deleted, and the contour lines within the range where inclined shaft outcrops are not allowed, such as the contour lines of nature reserves, drinking water source protection areas, etc., are deducted, and then the remaining contour lines are extracted and processed into a three-dimensional space plane.

[0012] Further optimization, the coordinates of locating the pile numbers in the three-dimensional construction model also include the following steps: determining the starting and ending range of the pile numbers of the initial underground fan room, and establishing trial points Z1, Z2...Zn in sequence according to a certain design spacing, where n is an integer greater than or equal to 1; since multiple pile numbers can be arranged at the underground fan room, in the specific steps, it is necessary to determine the location of the initial underground fan room, and then collect and organize the range of pile numbers in which the underground fan room can be arranged after ventilation calculations, generally determining the coordinates of multiple pile numbers at intervals of 5m or 10m, where the trial point Z is the coordinate position, so as to facilitate the determination of the optimal inclined shaft position based on the comparison between multiple pile numbers.

[0013] Further optimization, when constructing an inverted cone at the pile number with the coordinates of the pile number as the vertex, also includes the following specific steps: constructing multiple inverted cones at the pile numbers in sequence with the coordinates of multiple pile numbers as the vertices.

[0014] Further optimization includes the following steps when constructing an inverted cone at each pile number: after constructing the inverted cone at the pile number, determine whether there is an intersection line between the slope of the inverted cone and the three-dimensional ground surface; if there is an intersection line, extract the intersection line between the slope of the inverted cone and the three-dimensional ground surface; if there is no intersection line, reconstruct the inverted cone with the coordinates of the next pile number as the vertex.

[0015] Further optimization, when extracting the intersection line between the slope of the inverted cone and the three-dimensional ground surface, and determining the shortest distance line between the intersection line and the pile number, also includes the following specific steps: it is necessary to extract the intersection lines between the slope of the inverted cone and the three-dimensional ground surface of all the trial points, and determine the shortest distance line between each trial point and the intersection line; after determining the shortest distance line between each trial point and the intersection line, compare the shortest line segments in all the lines, which is the shortest inclined shaft axis that meets the requirements for the underground wind machine room and inclined shaft setting; in this scheme, by constructing an inverted cone at multiple pile numbers, and then extracting the intersection lines between the cone surfaces of multiple inverted cones and the ground surface, and then comparing their respective shortest distance lines, the optimal inclined shaft axis corresponding to the location of the underground wind machine room is determined in turn.

[0016] Further optimization, when determining the shortest distance line between the trial point and the intersection line, also includes the following specific steps: select the horizontal plane where the pile number is located as the base plane, where the base plane is parallel to the top surface of the inverted cone; then project the intersection line onto the base plane to generate a plane projection line segment, and within the base plane, the shortest distance projection line between the plane projection line segment of the intersection line and the pile number is the projection of the shortest distance line onto the base plane; in order to quickly determine the shortest distance line, in this scheme, the intersection line needs to be projected into the plane where the tunnel design axis is located, that is, the plane where the pile number is located, and use this as the base plane to generate a plane projection line segment, and within the base plane, the shortest projection line between any point of the plane projection line segment and the pile number can be quickly determined, and this shortest projection line is the projection of the shortest distance line. The shortest distance line can be determined by restoring the original three-dimensional parameters.

[0017] Further optimization is performed, and the maximum longitudinal slope value of the inclined shaft is ≤12%; in this solution, in the case of trackless transportation, the longitudinal slope value generally does not exceed 12%, otherwise construction vehicles and the like cannot move forward.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] 1. The present invention provides a method, terminal and storage medium for selecting the site of a tunnel inclined shaft. By adopting this solution, the intersection line of the cone surface and the ground line can be determined based on the three-dimensional spatial relationship using a spatial drawing method. The shortest inclined shaft axis and the location of the opening can be determined intuitively and accurately. In general, this location is unique, thereby avoiding multiple manual calculations on a two-dimensional plane.

[0020] 2. The present invention provides a method, terminal and storage medium for selecting the site of a tunnel inclined shaft. By adopting this solution, the solution is solved through geometric relationships, and the certainty of the inclined shaft is guaranteed by the geometric relationships. Therefore, a small program can be easily written in a programming language to automatically solve the problem, thereby greatly improving the design efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0022] Figure 1 A schematic diagram of the inclined shaft arrangement provided by the present invention;

[0023] Figure 2 A schematic plan view of the inclined shaft arrangement provided by the present invention;

[0024] Figure 3 Schematic diagram of the intersection line between the inverted cone surface and the ground provided by the present invention;

[0025] Figure 4 A simplified projection diagram of the intersection line provided by the present invention;

[0026] Figure 5 This is an operational flow chart provided by the present invention. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0028] Example 1

[0029] This embodiment provides a method for selecting a tunnel inclined shaft site. Figures 1 to 5 As shown, a specific implementation is provided.

[0030] like Figure 1 and Figure 2As shown, the overall idea of this method is to use a drawing method based on three-dimensional spatial relationships to obtain the optimal tunnel entrance site selection plan. The specific approach is to design the operational ventilation plan and determine the initial proposed underground fan room location, which corresponds to the tunnel design axis pile number, elevation, and allowable inclined shaft longitudinal slope. Trackless transportation generally does not exceed 12%. The pile number corresponds to the tunnel axis design elevation, and the inclined shaft longitudinal slope is a feasible inclined shaft plan. All inclined shaft axes put together are actually an inverted cone. The intersection of this cone and the ground surface is the corresponding inclined shaft entrance location that meets the initial longitudinal slope. The location with the shortest distance from the intersection to the fan room is the optimal inclined shaft entrance, and the line connecting it to the fan room is the optimal inclined shaft axis.

[0031] Therefore, if Figure 5 As shown, the operation process of this method is:

[0032] Step 1: First, obtain a 3D construction model of the tunnel site. Then, based on the ventilation design of the operation plan, determine the initial proposed underground fan location. After ventilation calculations, compile and organize the range of stake numbers that can be placed in the underground fan room. Compile a table of stake numbers and design elevations at 5m or 10m intervals. Determine the maximum acceptable longitudinal slope for the inclined shaft, which generally does not exceed 12% when using trackless transportation. Then, process a topographic map of the tunnel site's area where the inclined shaft entrance can be located. Delete any contour elements outside of the contour lines and deduct contour lines within areas where inclined shafts are not permitted, such as nature reserves. Process the remaining contour lines into a 3D plane.

[0033] Step 2: According to the determined location of underground fan room and Figure 1 After obtaining the coordinates and elevation of the Z1 pile number in the calculation, draw the cone surface of the inclined shaft plan at the maximum longitudinal slope, that is, take the coordinates of multiple pile numbers as vertices, and construct multiple inverted cones at the pile numbers in sequence, such as Figure 3 As shown, then observe whether the cone surface has an intersection line with the three-dimensional ground in space.

[0034] Step 3: Observe whether the inclined shaft cone intersects the ground. If so, determine the shortest distance between the intersection and the underground fan room. The line connecting this shortest distance is the shortest inclined shaft solution that meets the requirements. If not, adjust the underground fan room location (to the next stake number) and repeat Step 2 to determine the optimal inclined shaft solution for each underground fan room location.

[0035] Step 4: When determining the shortest distance line between the intersection line and the stake number, Figure 4 As shown, the intersection line needs to be projected into the horizontal plane where the tunnel design axis is located, that is, the horizontal plane where the pile number is located, and this is used as the base plane to generate a plane projection line segment. Within the base plane, the shortest projection line between any point of the plane projection line segment and the pile number can be quickly determined. This shortest projection line is the projection of the shortest distance line. The shortest distance line can be determined by restoring the original three-dimensional parameters.

[0036] Step 5: In general, the above method can be used to obtain the optimal shortest inclined shaft solution corresponding to each equally spaced pile position. Finally, all the shortest distance lines are compared, and the shortest one is selected as the optimal shortest inclined shaft solution that meets the ventilation requirements of the tunnel.

[0037] Through the above specific steps, the present scheme can be used to determine the intersection line of the cone surface and the ground line based on the three-dimensional spatial relationship by using the spatial drawing method, and the shortest inclined shaft axis and the hole position can be determined intuitively and accurately. In general, this position is unique, thus avoiding multiple manual trial calculations in the two-dimensional plane; and the calculation is performed through geometric relationships, and the certainty of the inclined shaft is guaranteed by the geometric relationships. Therefore, it is convenient to use a programming language to write a small program for automatic solution, which greatly improves the design efficiency.

[0038] Example 2

[0039] In some exemplary embodiments, this embodiment also provides a two- and three-dimensional hybrid clipping terminal device based on building structural components, including a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the computer program, it implements the minimum technical solution for a two- and three-dimensional hybrid clipping method of building structural components based on face regions, as described in Example 3, for the purpose of "clipping intersecting components based on face regions, which omits the clipping process of three-dimensional entities compared to three-dimensional Boolean clipping, can greatly improve the component clipping performance in three-dimensional software, and make the plane projection meet the requirements of architectural engineering drawing."

[0040] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0041] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0042] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0043] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0044] Those skilled in the art will understand that all or part of the steps in implementing the above facts and methods can be completed by instructing relevant hardware through a program, and the program involved or the program can be stored in a computer-readable storage medium. When the program is executed, it includes the following steps: the corresponding method steps are then brought out, and the storage medium can be ROM / RAM, a disk, an optical disk, etc.

[0045] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for selecting a tunnel inclined shaft site, characterized in that: The method comprises the following steps: Obtain a three-dimensional surface model of the tunnel site and the tunnel spatial axis to form a three-dimensional construction model, and formulate the pile number and coordinates of the underground fan room in the three-dimensional construction model, and formulate the longitudinal slope value of the inclined shaft; An inverted cone is constructed with the coordinates of the pile number as the vertex and the pile number as the cone top; the longitudinal slope value of the cone surface of the inverted cone is the proposed longitudinal slope value of the inclined shaft; Extract the intersection line between the inverted cone surface and the three-dimensional ground surface, and determine the shortest distance connecting line between the intersection line and the pile number of the underground fan room; the intersection point of the connecting line and the intersection line is the end point of the inclined shaft, which is the shortest inclined shaft direction that meets the longitudinal slope requirements of the inclined shaft.

2. A tunnel inclined shaft site selection method according to claim 1, characterized in that: After obtaining the 3D construction model, the following steps are also included: After deleting the elements except the contour lines in the 3D construction model and the contour lines within the range where the inclined well outcrop is not allowed, the remaining contour lines are extracted to obtain a new 3D space plane.

3. A tunnel inclined shaft site selection method according to claim 1, characterized in that: The coordinates of the positioning pile numbers in the three-dimensional construction model also include the following steps: determining the starting and ending ranges of the position pile numbers of the initially planned underground wind turbine room, and establishing trial calculation points Z1, Z2...Zn in sequence according to a certain design spacing, where n is an integer greater than or equal to 1.

4. A tunnel inclined shaft site selection method according to claim 3, characterized in that: When constructing an inverted cone at the stake with the coordinates of the stake as the vertex, the following specific steps are also included: Taking the coordinates of multiple pile numbers as vertices, multiple inverted cones are constructed at the pile numbers in sequence.

5. A tunnel inclined shaft site selection method according to claim 4, characterized in that: When constructing the inverted cone at each station, the following steps are also included: After constructing the inverted cone at the stake number, determine whether there is an intersection line between the cone surface of the inverted cone and the three-dimensional ground surface. If there is an intersection line, extract the intersection line between the cone surface of the inverted cone and the three-dimensional ground surface; if there is no intersection line, reconstruct the inverted cone with the coordinates of the next stake number as the vertex.

6. A tunnel inclined shaft site selection method according to claim 3, characterized in that: Extracting the intersection line between the inverted cone surface and the three-dimensional ground surface and determining the shortest distance line between the intersection line and the stake number also includes the following specific steps: It is necessary to extract the intersection lines between the inverted cone surfaces of all the trial points and the three-dimensional ground surface, and determine the shortest distance line between each trial point and the intersection line; after determining the shortest distance line between each trial point and the intersection line, compare the shortest line segments among all the lines, which is the shortest inclined shaft axis that meets the requirements for the underground fan room and inclined shaft setting.

7. A tunnel inclined shaft site selection method according to claim 1, characterized in that: When determining the shortest distance line between the trial point and the intersection line, the following specific steps are also included: The horizontal plane where the pile number is located is selected as the base plane, where the base plane is parallel to the top surface of the inverted cone; the intersection line is then projected onto the base plane to generate a plane projection line segment, and within the base plane, the shortest distance projection line between the plane projection line segment of the intersection line and the pile number is the projection of the shortest distance line onto the base plane.

8. A tunnel inclined shaft site selection method according to claim 1, characterized in that: The maximum longitudinal slope value of the inclined shaft is ≤12%.

9. A terminal, characterized in that: It includes at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute a tunnel inclined shaft site selection method as described in any one of claims 1 to 8.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, a tunnel inclined shaft site selection method according to any one of claims 1 to 8 is implemented.

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