Automatic drawing method for tailwater branch pipe construction drawing of hydropower station

Abstract

The present application relates to a method for automatically drawing the construction drawing of a tailwater bifurcated pipe of a hydropower station. The present application is applicable to the field of water conservancy and hydropower engineering. The technical solution adopted in the present application includes: obtaining the design parameters of the tailwater bifurcated pipe of a hydropower station input by the user; judging the type of the tailwater bifurcated pipe based on the bifurcated pipe engineering and contour parameters, and drawing the contour diagram of the tailwater bifurcated pipe; drawing the bifurcated pipe excavation support diagram, structure and grouting layout diagram and reinforcement diagram based on the contour diagram combined with the excavation support parameters, structure and grouting layout parameters and reinforcement parameters; calculating the excavation engineering quantity, structure and grouting engineering quantity, and reinforcement engineering quantity based on the bifurcated pipe excavation support diagram, structure and grouting layout diagram and reinforcement diagram, and generating an engineering quantity table; selecting the corresponding preset drawing frame based on the type of the tailwater bifurcated pipe, adding the excavation support diagram, structure and grouting layout diagram, and reinforcement diagram to the preset position in the drawing frame, and generating a complete construction drawing of the tailwater bifurcated pipe of a hydropower station.

Description

Technical Field

[0001] The present invention relates to a method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station, and is applicable to the field of water conservancy and hydropower engineering. Background Art

[0002] In recent years, the accelerated pace of hydropower and water conservancy project design and the inefficiency of manual drafting have led to a significant increase in design and drafting workloads, putting increasing strain on human resources. Currently, design drawings for standard structures (including tunnels, pumphouses, powerhouses, tailraces, surge tanks, and intake towers) still require manual drawing, which is not only time-consuming and labor-intensive but also prone to errors due to the tedious operation. Therefore, improving the efficiency and accuracy of hydropower and water conservancy project drafting has become an urgent issue that needs to be addressed.

[0003] Tailwater manifolds are a crucial component of hydropower projects. Designers must draw excavation and support diagrams, grouting diagrams, and reinforcement diagrams, posing a significant workload during the construction drawing design phase. Due to a lack of automated drawing methods and systems, tailwater manifold construction drawings still rely primarily on designers using general-purpose computer-aided design (ATuoCAD) software. This process is inefficient and prone to errors, a problem exacerbated by repeated design revisions. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in view of the above-mentioned existing problems, a method for automatically drawing the construction drawing of the tailwater bifurcated pipe of a hydropower station is provided.

[0005] The technical solution adopted by the present invention is: a method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station, characterized by comprising:

[0006] Obtain the tailwater bifurcated pipe design parameters entered by the user, which include bifurcated pipe engineering and profile parameters, excavation support parameters, structure and grouting layout parameters, and reinforcement parameters;

[0007] Determine the type of tailwater bifurcated pipe based on bifurcated pipe engineering and profile parameters, and draw the tailwater bifurcated pipe profile.

[0008] Based on the contour diagram combined with excavation support parameters, structure and grouting layout parameters and reinforcement parameters, draw the bifurcated pipe excavation support diagram, structure and grouting layout diagram and reinforcement diagram;

[0009] Based on the bifurcated pipe excavation and support drawings, structure and grouting layout drawings, and reinforcement drawings, calculate the excavation engineering quantities, structure and grouting engineering quantities, and reinforcement engineering quantities, and generate engineering quantity tables;

[0010] Based on the type of tailwater bifurcated pipe, select the corresponding preset drawing frame, add the excavation support diagram, structure and grouting layout diagram, and reinforcement diagram to the preset position in the drawing frame, and generate a complete construction drawing of the tailwater bifurcated pipe of the hydropower station.

[0011] The branch pipe project and profile parameters include project name, main pipe azimuth, starting pile number, main pipe tunnel inner diameter, main pipe lining thickness, branch pipe inner diameter, branch pipe lining thickness, slope ratio, bifurcation angle, rounding radius of the main and branch pipe connection position, and lining concrete grade parameters.

[0012] The excavation support parameters include anchor rod length, anchor rod spacing, anchor rod bending length, anchor rod rock penetration depth, mesh shotcrete thickness, and mesh shotcrete range.

[0013] The structure and grouting arrangement parameters include the rock penetration depth, row spacing, and number of holes in each row of grouting holes.

[0014] The reinforcement parameters include main reinforcement model, main reinforcement diameter, main reinforcement spacing, auxiliary reinforcement model, auxiliary reinforcement diameter, and auxiliary reinforcement spacing.

[0015] The types of tailwater bifurcations include radial bifurcations, symmetrical Y-shaped bifurcations, and asymmetrical Y-shaped bifurcations.

[0016] The type of tailwater bifurcated pipe is determined based on the bifurcated pipe engineering and profile parameters, including:

[0017] The bifurcation angle in the bifurcation engineering and profile parameters includes the bifurcation angle of the upper part of the main pipe and the bifurcation angle of the lower part of the main pipe, both of which are decimals greater than or equal to 0;

[0018] When only one of the upper fork angle and the lower fork angle is 0, the bifurcation is determined to be a type B bifurcation.

[0019] When the upper fork angle is different from the lower fork angle and both are not 0, the bifurcated pipe is determined to be an asymmetric Y-type bifurcated pipe;

[0020] When the upper fork angle and the lower fork angle are both not 0 and are the same, the bifurcated pipe is determined to be a symmetrical Y-type bifurcated pipe.

[0021] The excavation work volume includes the rock excavation volume, the number of anchor bolts, the area of ​​shotcrete spraying, and the weight of the mesh reinforcement;

[0022] The said structure and grouting engineering quantity includes the total length of the consolidation grouting drilling, the total length of the copper sheet water stop, and the volume of the lining concrete;

[0023] The steel bar engineering quantity includes the length, number and weight of single steel bars at different positions of the main pipe and branch pipe, as well as the total weight of the main bars and auxiliary bars of the tailwater branch pipe.

[0024] A system for automatically drawing construction drawings of tailwater bifurcated pipes of a hydropower station, characterized by comprising:

[0025] The parameter input module is used to obtain the design parameters of the tailwater bifurcations of the hydropower station entered by the user. The design parameters of the tailwater bifurcations of the hydropower station include bifurcations engineering and profile parameters, excavation support parameters, structure and grouting layout parameters, and reinforcement parameters;

[0026] Drawing Module I is used to determine the type of tailwater bifurcated pipe based on bifurcated pipe engineering and contour parameters, and draw the contour diagram of the tailwater bifurcated pipe;

[0027] Drawing Module II is used to draw bifurcated pipe excavation support diagrams, structure and grouting layout diagrams, and reinforcement diagrams based on the contour diagram combined with excavation support parameters, structure and grouting layout parameters, and reinforcement parameters;

[0028] The engineering quantity calculation module is used to calculate the excavation engineering quantity, structure and grouting engineering quantity, and steel engineering quantity based on the bifurcated pipe excavation and support diagram, structure and grouting layout diagram, and steel reinforcement diagram, and generate the engineering quantity table;

[0029] The construction drawing generation module is used to select the corresponding preset drawing frame based on the type of tailwater bifurcations, add the excavation and support drawings, structure and grouting layout drawings, and reinforcement drawings to the preset positions in the drawing frame, and generate a complete construction drawing for the tailwater bifurcations of the hydropower station.

[0030] A storage medium stores a computer program that can be executed by a processor, characterized in that when the computer program is executed, the steps of the method for automatically drawing the construction drawing of the tailwater branch pipe of the hydropower station are realized.

[0031] A device for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station comprises a memory and a processor. The memory stores a computer program that can be executed by the processor. The device is characterized in that when the computer program is executed, the steps of the method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station are implemented.

[0032] The beneficial effects of the present invention are as follows: the present invention draws an outline drawing of a tailwater bifurcated pipe based on the design parameters of the tailwater bifurcated pipe of a hydropower station, draws an excavation and support drawing, a structure and grouting arrangement drawing, and a reinforcement drawing of the bifurcated pipe based on the outline drawing and the design parameters, calculates the excavation engineering quantity, the structure and grouting engineering quantity, and the reinforcement engineering quantity based on the bifurcated pipe excavation and support drawing, the structure and grouting arrangement drawing, and the reinforcement drawing, thereby realizing the parametric one-click generation of the construction drawing of the tailwater bifurcated pipe of the hydropower station, and can quickly update and generate drawing files after the design parameters are modified.

[0033] According to the preset correspondence, the present invention selects a corresponding preset drawing frame based on the type of tailwater bifurcated pipe, and generates a construction drawing of the tailwater bifurcated pipe of a hydropower station in combination with the preset drawing frame. The drawing file has a reasonable layout and accurate drawing, which complies with the drawing standards of water conservancy and hydropower engineering.

[0034] The present invention has good adaptability and interactivity, is applicable to a variety of common bifurcated pipe shapes, can greatly improve drawing efficiency, reduce errors, and further enhance design quality and accuracy.

[0035] The present invention has good fault tolerance performance. After the drawing is completed, a preview image is provided for the user to observe and confirm. By observing the preview image, parameter errors can be discovered in time so that the errors can be corrected quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a flow chart of the method for automatically drawing the construction drawings of the tailwater bifurcations of a hydropower station.

[0037] Figure 2 Schematic diagram of tailwater bifurcated pipe engineering parameters and profile parameters.

[0038] Figure 3 It shows the tailwater bifurcated pipe excavation support parameters and excavation support preview.

[0039] Figures 4 and 5 This is the generated tailwater bifurcated pipe excavation and support diagram.

[0040] Figure 6 It is the interface for previewing the tailwater bifurcated pipe structure and grouting arrangement parameters, structure and grouting arrangement.

[0041] Figures 7 and 8 This is the generated tailwater bifurcated pipe structure and grouting arrangement diagram.

[0042] Figure 9 It is the tailwater branch pipe reinforcement parameters and reinforcement preview interface.

[0043] Figures 10 to 12 This is the generated tailwater branch pipe reinforcement diagram. DETAILED DESCRIPTION

[0044] Example 1: Figure 1 As shown, this embodiment is a method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station, which specifically includes the following steps:

[0045] S100. Obtain the hydropower station tailwater bifurcated pipe design parameters entered by the user based on the tailwater bifurcated pipe design template, and save the parameters as a bifurcated pipe parameter configuration file in JSON format; the configuration file can be read later to automatically fill in the bifurcated pipe parameters, thereby reducing the time required to modify the design parameters or input similar engineering design parameters.

[0046] In this example, the design parameters of the tailwater bifurcations of a hydropower station consist of bifurcations engineering and profile parameters, excavation and support parameters, structure and grouting arrangement parameters, and reinforcement parameters.

[0047] In this embodiment, the bifurcated pipe project and profile parameters include the project name, main pipe azimuth, starting pile number, main pipe tunnel inner diameter, main pipe lining thickness, branch pipe inner diameter, branch pipe lining thickness, slope ratio, bifurcation angle, main and branch pipe connection radius, and lining concrete grade parameters.

[0048] In this example, the excavation support parameters are composed of anchor length, anchor spacing, anchor bending length, anchor penetration depth, mesh shotcrete thickness, and mesh shotcrete range.

[0049] In this embodiment, the structural and grouting arrangement parameters consist of the rock penetration depth, row spacing, and number of holes in each row of grouting holes.

[0050] In this embodiment, the reinforcement parameters include the main reinforcement model, main reinforcement diameter, main reinforcement spacing, auxiliary reinforcement model, auxiliary reinforcement diameter and auxiliary reinforcement spacing.

[0051] S200: Based on the bifurcated pipe engineering and contour parameters, determine the type of the tailwater bifurcated pipe and draw a contour diagram of the tailwater bifurcated pipe.

[0052] In this embodiment, the type of the tailrace bifurcation is determined based on the bifurcation angle in the bifurcation engineering and profile parameters. The bifurcation angle includes the bifurcation angle of the upper portion of the main pipe and the bifurcation angle of the lower portion of the main pipe, both of which are decimals greater than or equal to 0.

[0053] In this example, when only one of the upper fork angle and the lower fork angle is 0, the fork is determined to be a Bu-type fork; when the upper fork angle and the lower fork angle are different and both are not 0, the fork is determined to be an asymmetric Y-type fork; when the upper fork angle and the lower fork angle are both different and the same, the fork is determined to be a symmetric Y-type fork; when both the upper fork angle and the lower fork angle are 0, it is determined to be an input error.

[0054] S300. Based on the contour diagram and in combination with the excavation support parameters, structure and grouting layout parameters and reinforcement parameters, draw the bifurcated pipe excavation support diagram, structure and grouting layout diagram and reinforcement diagram.

[0055] In traditional drawing methods, for bifurcated pipes of different sizes, a separate drawing method is compiled for each bifurcated pipe type. This method is not only labor-intensive to implement, but also inconvenient to use due to the different parameters of each bifurcated pipe type. In this embodiment, by introducing two parameters, the bifurcated pipe upper part angle and the bifurcated pipe lower part angle, a universal drawing method for common bifurcated pipe types is established. The method is more simple to implement, and bifurcated pipes of different sizes use the same set of input parameters, making it more convenient to use.

[0056] The first step is to determine the bifurcation shape based on the input upper bifurcation angle and lower bifurcation angle;

[0057] The second step is to determine the connection method between the main pipe and the branch pipe based on the shape of the bifurcated pipe. In a symmetrical Y-shaped bifurcated pipe, the main pipe and the two branches use an arc connection. In an asymmetrical Y-shaped bifurcated pipe or a ∘-shaped bifurcated pipe, the main pipe and the branch pipe on the side with the smaller bifurcation angle use a broken line connection, and the main pipe and the branch pipe on the side with the larger bifurcation angle use an arc connection.

[0058] The third step is to draw the outline of the bifurcated pipe according to its shape and connection form. Then, use the outline to draw the excavation support diagram, structure and grouting layout diagram, and reinforcement diagram respectively.

[0059] S400. Based on the bifurcated pipe excavation and support diagram, the structure and grouting arrangement diagram, and the reinforcement diagram, the excavation engineering quantity, the structure and grouting engineering quantity, and the reinforcement engineering quantity are calculated, and a quantity table is generated.

[0060] In this embodiment, the excavation quantity includes the rock excavation volume, the number of anchor rods, the area of ​​shotcrete, and the weight of the mesh reinforcement; the structure and grouting quantity includes the total length of the consolidation grouting drilling holes, the total length of the copper sheet water stop, and the lining concrete volume; the reinforcement quantity includes the length, number, and weight of individual reinforcement bars at different locations of the main and branch pipes, as well as the total weight of the main reinforcement and the total weight of the auxiliary reinforcement bars of the tailwater branch pipe.

[0061] S500. Based on the type of tailwater bifurcated pipe, select the corresponding preset drawing frame, add the excavation support drawing, structure and grouting arrangement drawing, and reinforcement drawing to the preset position of the drawing frame, generate a complete construction drawing of the tailwater bifurcated pipe of the hydropower station, and export it as a CAD drawing in DXF format.

[0062] In this embodiment, before drawing, the parameter format and value range are verified. If the format does not meet the requirements, the correct format is prompted. If the value range does not meet the requirements, the maximum and minimum values ​​of the parameters are prompted. When drawing, for a single geometric element, the existence of the geometric element, the rationality of the relative position relationship with other geometric elements, and the rationality of its absolute position are verified. For arrays of geometric bodies such as grouting holes, anchor rods, and steel bars, it is also necessary to verify that the number of geometric bodies in the array is greater than 1. If the verification fails, the drawing is terminated and the drawing type, sub-drawing name, location of the geometric element that failed to be drawn, related input parameters, and the specific problem of the verification failure are prompted.

[0063] The following is an explanation with specific examples:

[0064] like Figure 2As shown, before drawing a tailrace bifurcated pipe, you need to enter the relevant parameters of the bifurcated pipe project. In this example, the starting pile numbers and main pipe azimuths of the 1#, 2#, and 3# tailrace tunnels are as follows: the starting pile number of the 1# tailrace tunnel is 1+357.876, the starting pile number of the 2# tailrace tunnel is 1+376.962, and the starting pile number of the 3# tailrace tunnel is 1+376.962. The main pipe azimuth is N10W. Next, enter the bifurcated pipe profile parameters: the main pipe inner diameter is 680cm, the tailrace tunnel lining thickness is 50cm, the main pipe lining thickness is 70cm, and the main pipe diameter slope ratio is 0.5; the branch pipe inner diameter is 500cm; the upper bifurcated pipe angle is 25°, the lower bifurcated pipe angle is 25°, and the main and branch pipe angle rounding radius is 1000cm. The upper and lower bifurcated pipe angles are the same, so it is determined to be a symmetrical Y-shaped bifurcated pipe.

[0065] like Figure 3 As shown, input the excavation support parameters, including anchor bar model HRB400, diameter 25mm, spacing 150cm; upper half arch anchor rod or anchor bar length 450cm, rock penetration depth 410cm; upper half arch anchor rod diameter 22mm, spacing 150cm, length 300cm, rock penetration depth 260cm; lower half arch anchor rod or anchor bar diameter 25mm, spacing 150cm, length 450cm, bending length 35cm, rock penetration depth 350cm; lower half arch anchor rod diameter 22mm, spacing 150cm, anchor rod length 300cm, bending length 35cm, rock penetration depth 200cm; mesh sprayed concrete thickness 10cm, mesh range 240°. Excavation support preview as shown below. Figure 3 As shown, the generated tailwater bifurcated pipe excavation support CAD drawing is as follows Figure 4 、 Figure 5 shown.

[0066] like Figure 6 As shown in the figure, the input structure and grouting layout parameters include: the rock penetration depth of the grouting hole at position 1 is 500cm, the row spacing is 200cm, and the number of holes per row is 15; the rock penetration depth of the grouting hole at position 2 is 400cm, the row spacing is 190cm, and the number of holes per row is 12; the rock penetration depth of the grouting hole at position 3 is 180cm, and the number of holes per row is 16. The structure and grouting layout preview is shown in the figure below. Figure 7 The generated structure and grouting arrangement CAD drawings are shown as follows Figure 7 、 Figure 8 shown.

[0067] like Figure 9 As shown in the figure, input the steel bar parameters, including the main bar model HRB400, main bar diameter 25mm, main bar spacing 15cm; auxiliary bar model HRB400, auxiliary bar diameter 20mm, auxiliary bar spacing 20cm. The generated steel bar preview is as follows Figure 10 As shown, the generated steel bar CAD drawing is as follows Figures 11 to 12 shown.

[0068] Embodiment 2: This embodiment is a system for automatically drawing construction drawings of tailwater bifurcations of a hydropower station, comprising: a parameter input module, a drawing module I, a drawing module II, an engineering quantity calculation module, and a construction drawing generation module.

[0069] In this example, the parameter input module is used to obtain the design parameters of the tailwater bifurcations of a hydropower station entered by the user. The design parameters of the tailwater bifurcations of a hydropower station include bifurcations engineering and profile parameters, excavation and support parameters, structure and grouting layout parameters, and reinforcement parameters.

[0070] In this embodiment, drawing module I is used to determine the type of tailwater bifurcated pipe based on the bifurcated pipe engineering and contour parameters, and to draw a contour diagram of the tailwater bifurcated pipe. Drawing module II is used to draw a bifurcated pipe excavation and support diagram, a structural and grouting layout diagram, and a reinforcement diagram based on the contour diagram in combination with excavation and support parameters, structural and grouting layout parameters, and reinforcement parameters.

[0071] In this embodiment, the engineering quantity calculation module is used to calculate the excavation engineering quantity, structure and grouting engineering quantity, and steel engineering quantity based on the bifurcated pipe excavation support diagram, structure and grouting layout diagram, and steel bar diagram, and generate an engineering quantity table.

[0072] In this example, the construction drawing generation module is used to select the corresponding preset drawing frame based on the tailwater bifurcations type, add the excavation support diagram, structure and grouting layout diagram, and reinforcement diagram to the preset positions in the drawing frame, and generate a complete construction drawing for the tailwater bifurcations of the hydropower station.

[0073] Example 3: This example is a storage medium on which a computer program that can be executed by a processor is stored. When the computer program is executed, the steps of the method for automatically drawing the construction drawing of the tailwater branch pipe of the hydropower station in Example 1 are implemented.

[0074] Example 4: This example is an automatic drawing device for the construction drawing of a tailwater bifurcated pipe of a hydropower station, which has a memory and a processor. The memory stores a computer program that can be executed by the processor. When the computer program is executed, the steps of the automatic drawing method for the construction drawing of the tailwater bifurcated pipe of the hydropower station in Example 1 are implemented.

Claims

1. A method for automatically drawing a construction drawing of a tailwater branch pipe of a hydropower station, characterized in that: include: Obtain the tailwater bifurcated pipe design parameters entered by the user, which include bifurcated pipe engineering and profile parameters, excavation support parameters, structure and grouting layout parameters, and reinforcement parameters; Determine the type of tailwater bifurcated pipe based on bifurcated pipe engineering and profile parameters, and draw the tailwater bifurcated pipe profile. Based on the contour diagram combined with excavation support parameters, structure and grouting layout parameters and reinforcement parameters, draw the bifurcated pipe excavation support diagram, structure and grouting layout diagram and reinforcement diagram; Based on the bifurcated pipe excavation and support drawings, structure and grouting layout drawings, and reinforcement drawings, calculate the excavation engineering quantity, structure and grouting engineering quantity, and reinforcement engineering quantity, and generate a quantity table; Based on the type of tailwater bifurcates, select the corresponding preset drawing frame, add the excavation support diagram, structure and grouting layout diagram, and reinforcement diagram to the preset position in the drawing frame, and generate the construction drawing of the tailwater bifurcates of the hydropower station.

2. The method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station according to claim 1, characterized in that: The branch pipe project and profile parameters include project name, main pipe azimuth, starting pile number, main pipe tunnel inner diameter, main pipe lining thickness, branch pipe inner diameter, branch pipe lining thickness, slope ratio, bifurcation angle, rounding radius of the main and branch pipe connection position, and lining concrete grade parameters.

3. The method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station according to claim 1, characterized in that: The excavation support parameters include anchor rod length, anchor rod spacing, anchor rod bending length, anchor rod rock penetration depth, mesh shotcrete thickness, and mesh shotcrete range.

4. The method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station according to claim 1, characterized in that: The structure and grouting arrangement parameters include the rock penetration depth, row spacing, and number of holes in each row of grouting holes.

5. The method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station according to claim 1, characterized in that: The reinforcement parameters include main reinforcement model, main reinforcement diameter, main reinforcement spacing, auxiliary reinforcement model, auxiliary reinforcement diameter, and auxiliary reinforcement spacing.

6. The method for automatically drawing a construction drawing of a tailwater bifurcated pipe of a hydropower station according to claim 1, characterized in that: The types of tailwater bifurcations include radial bifurcations, symmetrical Y-shaped bifurcations, and asymmetrical Y-shaped bifurcations.

7. The method for automatically drawing the construction drawing of the tailwater bifurcated pipe of a hydropower station according to claim 6, characterized in that: The type of tailwater bifurcated pipe is determined based on the bifurcated pipe engineering and profile parameters, including: The bifurcation angle in the bifurcation engineering and profile parameters includes the bifurcation angle of the upper part of the main pipe and the bifurcation angle of the lower part of the main pipe, both of which are decimals greater than or equal to 0; When only one of the upper fork angle and the lower fork angle is 0, the bifurcation is determined to be a type B bifurcation. When the upper fork angle is different from the lower fork angle and both are not 0, the bifurcated pipe is determined to be an asymmetric Y-type bifurcated pipe; When the upper fork angle and the lower fork angle are both not 0 and are the same, the bifurcated pipe is determined to be a symmetrical Y-type bifurcated pipe.

8. The method for automatically drawing the construction drawing of the tailwater bifurcated pipe of a hydropower station according to claim 1, characterized in that: The excavation work volume includes the rock excavation volume, the number of anchor bolts, the area of ​​shotcrete spraying, and the weight of the mesh reinforcement; The said structure and grouting engineering quantity includes the total length of the consolidation grouting drilling, the total length of the copper sheet water stop, and the volume of the lining concrete; The steel bar engineering quantity includes the length, number and weight of single steel bars at different positions of the main pipe and branch pipe, as well as the total weight of the main bars and auxiliary bars of the tailwater branch pipe.

9. An automatic drawing system for tailwater branch pipe construction drawings of a hydropower station, characterized in that: include: The parameter input module is used to obtain the design parameters of the tailwater bifurcations of the hydropower station entered by the user. The design parameters of the tailwater bifurcations of the hydropower station include bifurcations engineering and profile parameters, excavation support parameters, structure and grouting layout parameters, and reinforcement parameters; Drawing Module I is used to determine the type of tailwater bifurcated pipe based on bifurcated pipe engineering and contour parameters, and draw the contour diagram of the tailwater bifurcated pipe; Drawing Module II is used to draw the bifurcated pipe excavation support diagram, structure and grouting layout diagram, and reinforcement diagram based on the contour diagram combined with the excavation support parameters, structure and grouting layout parameters, and reinforcement parameters; The engineering quantity calculation module is used to calculate the excavation engineering quantity, structure and grouting engineering quantity, and steel engineering quantity based on the bifurcated pipe excavation and support diagram, structure and grouting layout diagram, and steel reinforcement diagram, and generate the engineering quantity table; The construction drawing generation module is used to select the corresponding preset drawing frame based on the type of tailwater bifurcations, add the excavation and support drawings, structure and grouting layout drawings, and reinforcement drawings to the preset positions in the drawing frame, and generate a complete construction drawing for the tailwater bifurcations of the hydropower station.

10. A storage medium storing a computer program executable by a processor, characterized in that: When the computer program is executed, the steps of the method for automatically drawing the construction drawing of the tailwater bifurcated pipe of a hydropower station according to any one of claims 1 to 8 are implemented.

11. A device for automatically drawing construction drawings of tailwater bifurcations at a hydropower station, comprising a memory and a processor, wherein the memory stores a computer program executable by the processor, and wherein: When the computer program is executed, the steps of the method for automatically drawing the construction drawing of the tailwater bifurcated pipe of a hydropower station according to any one of claims 1 to 8 are implemented.

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