A method, device, equipment and medium for determining the initial branch spraying and mixing position of a tunnel

Abstract

The present invention relates to the technical field of tunnel engineering, and discloses a method, device, equipment and medium for distinguishing the initial branch spraying and mixing position of a tunnel. The present invention establishes a rectangular coordinate system by acquiring the contour design parameter set of the tunnel, and determines the line element parameter set of the tunnel in combination with the rectangular coordinate system. Further, the target support method of the tunnel to be distinguished can be calculated and determined through the parameterized line element, that is, the line element parameter set, and then the initial branch spraying and mixing position of the tunnel can be determined according to the determined target support method. Therefore, by implementing the present invention, manual input is reduced, the problem of parameter input errors is avoided, and the parameter accuracy is improved. Further, the automatic identification and determination of the initial branch spraying and mixing position of the tunnel is realized, and the spraying effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering, and in particular to a method, device, equipment and medium for distinguishing the initial branch spraying and mixing position of a tunnel. Background Art

[0002] In tunnel construction, when using intelligent spraying robots for concrete spraying operations, it is necessary to determine the type, thickness, spraying boundary and other parameters based on the design parameters. After the tunnel spraying is completed, when the 3D point cloud modeling of the spraying surface is performed and the spraying quality analysis is performed, it is also necessary to analyze based on the type, thickness, spraying boundary and other parameters. At present, these parameters need to be manually input, which is labor-intensive, error-prone, and inefficient, resulting in poor spraying results. Summary of the invention

[0003] In view of this, the present invention provides a method, device, equipment and medium for distinguishing the initial branch spray mixing position of a tunnel, so as to solve the problem that the existing parameters such as spray type, thickness, spray boundary, etc. need to be manually input, which is labor-intensive, prone to errors, and inefficient, resulting in poor spraying effect.

[0004] In a first aspect, the present invention provides a method for determining the initial branch spray mixing position of a tunnel, the method comprising:

[0005] Obtain a contour design parameter set of the tunnel to be identified; establish a rectangular coordinate system based on the contour design parameter set, and determine a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system; calculate the crown support thickness and bottom support thickness of the tunnel to be identified based on the first line element parameter set through the rectangular coordinate system and a preset first processing method; determine a target support method for the tunnel to be identified based on the crown support thickness and the bottom support thickness; determine the initial support spraying and mixing position of the tunnel to be identified based on the target support method.

[0006] The method for distinguishing the initial branch spraying and mixing position of a tunnel provided by the present invention establishes a rectangular coordinate system by acquiring the contour design parameter set of the tunnel, and determines the line element parameter set of the tunnel in combination with the rectangular coordinate system. Further, the target support mode of the tunnel to be distinguished can be calculated and determined through the parameterized line element, i.e., the line element parameter set, and then the initial branch spraying and mixing position of the tunnel can be determined according to the determined target support mode. Therefore, by implementing the present invention, manual input is reduced, the problem of parameter input errors is avoided, and the parameter accuracy is improved. Further, the automatic identification and determination of the initial branch spraying and mixing position of the tunnel is realized, and the spraying effect is improved.

[0007] In an optional implementation, a rectangular coordinate system is established based on the contour design parameter set, and a first line element parameter set of the tunnel to be identified is determined based on the rectangular coordinate system, including:

[0008] The design elevation and center line of the tunnel to be identified are obtained based on the contour design parameter set; a rectangular coordinate system is established with the intersection of the design elevation and the center line as the origin; multiple line elements of the excavation contour and the initial support contour in the tunnel to be identified are obtained respectively; and a first line element parameter set corresponding to the multiple line elements is determined based on the rectangular coordinate system.

[0009] The present invention establishes a rectangular coordinate system through a contour design parameter set, and determines the line element parameter set of the tunnel in combination with the rectangular coordinate system, thereby realizing automatic recognition of line element parameters, reducing manual input, and avoiding the problem of parameter input errors, thereby improving parameter accuracy and providing data support for the subsequent automatic recognition and determination of the initial branch spray-mixing position of the tunnel.

[0010] In an optional implementation, based on the first line element parameter set, the vault support thickness and the bottom support thickness of the tunnel to be identified are calculated through a rectangular coordinate system and a preset first processing method, including:

[0011] Based on the first line element parameter set, a plurality of line elements of the tunnel to be identified are processed using a preset first processing method to obtain a second line element parameter set; based on the second line element parameter set, the crown support thickness and the bottom support thickness of the tunnel to be identified are calculated.

[0012] The present invention calculates the crown support thickness and bottom support thickness of the tunnel through the line element parameter set, which can realize the automatic calculation of parameters, reduce the human input error, improve the accuracy, and provide data support for the automatic identification and determination of the subsequent initial support spraying and mixing position of the tunnel.

[0013] In an optional implementation, based on the first line element parameter set, a plurality of line elements for tunnels to be identified are processed using a preset first processing method to obtain a second line element parameter set, including:

[0014] Based on the first line element parameter set, at least one line element intersecting with the ordinate axis in the rectangular coordinate system is determined; each line element is split and the line element parameters of each line element after the split are determined based on the rectangular coordinate system; based on the first line element parameter set and the line element parameters of each line element after the split, a third line element parameter set is determined; based on the third line element parameter set, multiple line elements of the tunnel to be identified after the split are processed to obtain a second line element parameter set.

[0015] In an optional implementation, based on the third line element parameter set, the split multiple line elements of the tunnel to be identified are processed to obtain a second line element parameter set, including:

[0016] Based on the third line element parameter set, the multiple line elements of the tunnel to be identified after splitting are sorted in a preset order; the starting point and the end point of each sorted line element are reset in the preset order, and the second line element parameter set is determined based on each line element after the starting point and the end point are reset.

[0017] In an optional implementation, based on the second line element parameter set, calculating the vault support thickness and the bottom support thickness of the tunnel to be identified includes:

[0018] Based on the second line element parameter set, a fourth line element parameter set is obtained through a preset second processing method; based on the fourth line element parameter set, the ordinate values ​​of the excavation contour line element vertices, the ordinate values ​​of the excavation contour bottom plate line element, the ordinate values ​​of the initial support contour line element vertices and the ordinate values ​​of the initial support contour bottom plate line element of the tunnel to be identified are obtained; the vault support thickness is calculated based on the ordinate values ​​of the excavation contour line element vertices and the ordinate values ​​of the initial support contour line element vertices; the bottom support thickness is calculated based on the ordinate values ​​of the excavation contour bottom plate line element and the ordinate values ​​of the initial support contour bottom plate line element.

[0019] In an optional implementation, based on the arch support thickness and the bottom support thickness, determining the target support mode of the tunnel to be identified includes:

[0020] The bottom support thickness is compared with the preset first threshold, and the arch support thickness is compared with the preset second threshold; when the bottom support thickness is greater than the preset first threshold and the arch support thickness is greater than the preset second threshold, the target support method of the tunnel to be identified is determined to be full-section sprayed concrete; when the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, the preset judgment method is used to determine the target support method of the tunnel to be identified.

[0021] The present invention determines the target support mode of the tunnel to be identified according to the calculated arch support thickness and bottom support thickness, which can improve the accuracy of the target support mode and provide data support for the automatic identification and determination of the initial support spraying and mixing position of the subsequent tunnel.

[0022] In an optional implementation, when the arch support thickness is greater than a preset second threshold and the bottom support thickness is less than or equal to a preset first threshold, a preset judgment method is used to determine a target support mode of the tunnel to be judged, including:

[0023] When the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, the initial support method of the tunnel to be identified is determined to be local concrete spraying of the section; the side wall thickness of the tunnel to be identified is calculated based on the fourth line element parameter set; based on the side wall thickness, the preset third threshold and the preset fourth threshold, a secondary judgment is made on the initial support method of the tunnel to be identified to obtain the target support method of the tunnel to be identified.

[0024] The present invention further determines the target support method of the tunnel to be identified by combining the calculated side wall thickness of the tunnel to be identified, thereby improving the accuracy of the target support method and providing data support for the automatic identification and determination of the initial support spraying and mixing position of the subsequent tunnel.

[0025] In an optional implementation, calculating the side wall thickness of the tunnel to be identified based on the fourth line element parameter set includes:

[0026] Based on the fourth line element parameter set, the maximum horizontal coordinate value of the line element endpoint at the bottom of the excavation profile and the maximum horizontal coordinate value of the line element endpoint at the bottom plate of the initial support profile of the tunnel to be identified are obtained; based on the maximum horizontal coordinate value of the line element endpoint at the bottom of the excavation profile and the maximum horizontal coordinate value of the line element endpoint at the bottom plate of the initial support profile, the side wall thickness of the tunnel to be identified is calculated.

[0027] The present invention calculates the side wall thickness of the tunnel to be identified through a line element parameter set, can realize automatic calculation of parameters, reduces human input errors, improves accuracy, and provides data support for determining subsequent target support methods.

[0028] In an optional implementation, based on the side wall thickness, the preset third threshold value and the preset fourth threshold value, a secondary judgment is made on the initial support mode of the tunnel to be judged to obtain the target support mode of the tunnel to be judged, including:

[0029] The side wall thickness is compared with the preset third threshold and the preset fourth threshold respectively; when the side wall thickness is greater than the preset third threshold, the target support method of the tunnel to be identified is determined to be a mixed support method of section side wall and top arch sprayed concrete; when the side wall thickness is less than or equal to the preset fourth threshold, the target support method of the tunnel to be identified is determined to be partial section sprayed concrete.

[0030] In an optional implementation, determining the initial support spraying and mixing position of the tunnel to be identified based on the target support mode includes:

[0031] Based on the target support method, the target support limit of the tunnel to be identified is calculated using the binary iteration method; based on the target support method and the target support limit, the initial support spraying and mixing position of the tunnel to be identified is determined.

[0032] The present invention uses a binary iterative method to calculate the target support limit of the tunnel to be identified, thereby realizing the automatic calculation of the support limit. Furthermore, combined with the determined target support method, the automatic identification and determination of the initial support spraying and mixing position of the tunnel can be realized, thereby improving the spraying effect.

[0033] In a second aspect, the present invention provides a device for distinguishing the initial branch injection mixing position of a tunnel, the device comprising:

[0034] An acquisition module is used to acquire a contour design parameter set of a tunnel to be identified; an establishment and determination module is used to establish a rectangular coordinate system based on the contour design parameter set, and determine a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system; a calculation module is used to calculate the crown support thickness and the bottom support thickness of the tunnel to be identified based on the first line element parameter set, through the rectangular coordinate system and a preset first processing method; a first determination module is used to determine a target support method for the tunnel to be identified based on the crown support thickness and the bottom support thickness; a second determination module is used to determine the initial support spraying and mixing position of the tunnel to be identified based on the target support method.

[0035] In an optional implementation, the establishing and determining module includes:

[0036] The first acquisition submodule is used to obtain the design elevation and center line of the tunnel to be identified based on the contour design parameter set; the establishment submodule is used to establish a rectangular coordinate system with the intersection of the design elevation and the center line as the origin; the second acquisition submodule is used to respectively obtain multiple line elements of the excavation contour and the initial branch contour in the tunnel to be identified; the first determination submodule is used to determine the first line element parameter set corresponding to the multiple line elements based on the rectangular coordinate system.

[0037] In a third aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for determining the initial branch injection mixing position of a tunnel according to the first aspect or any corresponding embodiment thereof by executing the computer instructions.

[0038] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method for determining the location of initial branch injection mixing in a tunnel according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 1 is a flow chart of a method for determining the initial branch spray-mixing position of a tunnel according to an embodiment of the present invention;

[0041] Figure 2 is a flow chart of another method for determining the initial branch spray mixing position of a tunnel according to an embodiment of the present invention;

[0042] Figure 3 is a rectangular coordinate system of a tunnel profile section of a full-section primary branch according to an embodiment of the present invention;

[0043] Figure 4 is a schematic diagram of line element splitting according to an embodiment of the present invention;

[0044] Figure 5 is a schematic diagram of a process of counterclockwise resetting the start and end points of a contour element according to an embodiment of the present invention;

[0045] Figure 6 is a schematic cross-sectional diagram of a tunnel profile with a top arch and primary side wall support according to an embodiment of the present invention;

[0046] Figure 7 is a flow chart of another method for determining the initial branch spray mixing position of a tunnel according to an embodiment of the present invention;

[0047] Figure 8 is a schematic cross-sectional diagram of a tunnel profile of a portion of the primary branch according to an embodiment of the present invention;

[0048] Fig. 9 is a structural block diagram of a device for distinguishing the initial branch spray-mixing position of a tunnel according to an embodiment of the present invention;

[0049] Fig.10 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0051] An embodiment of the present invention provides a method for identifying the initial branch spraying and mixing position of a tunnel. A rectangular coordinate system is established through a contour design parameter set, and a line element parameter set of the tunnel is determined in combination with the rectangular coordinate system. Furthermore, the initial branch spraying and mixing position of the tunnel is automatically identified and determined through parameterized line elements, i.e., line element parameter sets, thereby improving the spraying effect.

[0052] According to an embodiment of the present invention, an embodiment of a method for distinguishing the initial branch injection mixing position of a tunnel is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0053] In this embodiment, a method for determining the initial branch spray mixing position in a tunnel is provided. Figure 1 : is a flow chart of a method for determining the initial branch injection mixing position of a tunnel according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0054] Step S101, obtaining a set of contour design parameters of a tunnel to be identified.

[0055] The contour design parameter set may include parameters such as the design elevation and center line of the tunnel to be identified.

[0056] Step S102: establishing a rectangular coordinate system based on the contour design parameter set, and determining a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system.

[0057] Specifically, a rectangular coordinate system corresponding to the tunnel to be determined and capable of representing a plurality of designed contours in the tunnel to be determined is established according to the contour design parameters of the tunnel to be determined.

[0058] Furthermore, each line element of the multiple design contours in the tunnel to be identified is represented by parameters, which may include parameters such as the line type, starting point, end point, line length, center point, starting angle, end angle, radius and position of the line element.

[0059] Among them, the line element represents a line segment in three-dimensional space, which has length but no width and thickness, and can be used to describe a small section of the designed contour in the tunnel to be identified.

[0060] Furthermore, the parameter value of each line element after parameterization of the tunnel to be identified can be determined according to the established rectangular coordinate system, and a first line element parameter set can be formed.

[0061] In one example, the line element parameters of a tunnel are shown in Table 1 below:

[0062] Table 1. Line element parameter table

[0063] Serial number Line Type starting point end Line length Center Starting angle End angle radius Location 1 Arc <![CDATA[x f ,and f ]]> <![CDATA[x e ,and e ]]> l <![CDATA[x0、y0]]> As Ae R Top Arch 2 straight line <![CDATA[x f ,and f ]]> <![CDATA[x e ,and e ]]> l / / / / Sidewall 3 straight line <![CDATA[x f ,and f ]]> <![CDATA[x e ,and e ]]> l / / / / Base Plate

[0064] Furthermore, according to the specific value of each parameter in Table 1 above, the corresponding line element parameter set can be obtained.

[0065] Step S103, based on the first line element parameter set, through the rectangular coordinate system and the preset first processing method, calculate the arch support thickness and the bottom support thickness of the tunnel to be identified.

[0066] Specifically, based on the first line element parameter set, multiple design contours of the tunnel to be identified are processed in combination with the established rectangular coordinate system, and the crown support thickness and bottom support thickness of the tunnel to be identified can be calculated.

[0067] Step S104, based on the crown support thickness and the bottom support thickness, determine the target support method of the tunnel to be identified.

[0068] Specifically, according to the calculated crown support thickness and bottom support thickness of the tunnel to be identified, the support method of the tunnel to be identified can be further determined.

[0069] Step S105, determining the initial support spraying and mixing position of the tunnel to be identified based on the target support method.

[0070] Specifically, the initial support spraying and mixing position of the tunnel to be identified can be determined according to the support method of the tunnel to be identified.

[0071] The method for distinguishing the initial branch spraying and mixing position of a tunnel provided in this embodiment establishes a rectangular coordinate system by acquiring the contour design parameter set of the tunnel, and determines the line element parameter set of the tunnel in combination with the rectangular coordinate system. Further, the target support method of the tunnel to be distinguished can be calculated and determined through the parameterized line element, i.e., the line element parameter set, and then the initial branch spraying and mixing position of the tunnel can be determined according to the determined target support method. Therefore, by implementing the present invention, manual input is reduced, the problem of parameter input errors is avoided, and the parameter accuracy is improved. Further, the automatic identification and determination of the initial branch spraying and mixing position of the tunnel is realized, and the spraying effect is improved.

[0072] In this embodiment, a method for determining the initial branch spray mixing position in a tunnel is provided. Figure 2 : is a flow chart of a method for determining the initial branch injection mixing position of a tunnel according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0073] Step S201, obtain the contour design parameter set of the tunnel to be identified. Figure 1 Step S101 of the illustrated embodiment will not be described in detail here.

[0074] Step S202: establishing a rectangular coordinate system based on the contour design parameter set, and determining a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system.

[0075] Specifically, the above step S202 includes:

[0076] Step S2021, obtaining the design elevation and center line of the tunnel to be identified based on the contour design parameter set.

[0077] Specifically, according to the description of step S101, the design elevation and center line of the tunnel to be identified can be obtained according to the acquired contour design parameter set.

[0078] Step S2022, establishing a rectangular coordinate system with the intersection of the design elevation and the center line as the origin.

[0079] Specifically, a rectangular coordinate system is established with the intersection of the design elevation and the center line of the tunnel to be identified as the origin, such as Figure 3 shown.

[0080] Step S2023, respectively obtain multiple line elements of the excavation contour and the initial branch contour in the tunnel to be determined.

[0081] Specifically, the design profile of the tunnel to be identified may include an excavation profile and a primary support profile.

[0082] Furthermore, multiple line elements of the excavation contour and the initial support contour are obtained respectively.

[0083] Step S2024, determining a first line element parameter set corresponding to the plurality of line elements based on a rectangular coordinate system.

[0084] Specifically, each line element is represented by a parameter, and the parameter value of each parameterized line element can be determined according to the established rectangular coordinate system to form a first line element parameter set.

[0085] Step S203, based on the first line element parameter set, through the rectangular coordinate system and the preset first processing method, calculate the arch support thickness and the bottom support thickness of the tunnel to be identified.

[0086] Specifically, the above step S203 includes:

[0087] Step S2031: Based on the first line element parameter set, a preset first processing method is used to process multiple line elements of the tunnel to be identified to obtain a second line element parameter set.

[0088] Specifically, a preset first processing method is used to process a plurality of line elements of the tunnel to be identified, and a second line element parameter set corresponding to the processed plurality of line elements is determined in combination with the first line element parameter set.

[0089] Step S2032: Calculate the crown support thickness and bottom support thickness of the tunnel to be identified based on the second line element parameter set.

[0090] Specifically, the crown support thickness and bottom support thickness of the tunnel to be identified can be calculated based on the processed second line element parameter set.

[0091] In some optional implementations, the above step S2031 includes:

[0092] Step a1: determining at least one line element intersecting with the ordinate axis in the rectangular coordinate system based on the first line element parameter set.

[0093] Step a2, splitting each line element and determining the line element parameters of each split line element based on a rectangular coordinate system.

[0094] Step a3: Determine a third line element parameter set based on the first line element parameter set and the line element parameters of each line element after splitting.

[0095] Step a4: based on the third line element parameter set, the split multiple line elements of the tunnel to be identified are processed to obtain a second line element parameter set.

[0096] Specifically, there are line elements in the tunnel to be determined that intersect with the ordinate axis (Y axis) in the established rectangular coordinate system, and therefore, the line elements in the tunnel to be determined that intersect with the Y axis are first obtained.

[0097] Secondly, split the line element intersecting the Y axis into two line elements at the intersection point, such as Figure 4 shown.

[0098] Then, the split line element parameters are recorded into the first line element parameter set to form a third line element parameter set.

[0099] Finally, based on the third line element parameter set, the multiple line elements of the split tunnel to be identified are processed to obtain the corresponding second line element parameter set.

[0100] In some optional implementations, the above step a4 includes:

[0101] Step a41, based on the third line element parameter set, sorting the multiple line elements of the tunnel to be identified after being split according to a preset order.

[0102] Step a42, resetting the start point and end point of each sorted line element according to a preset order, and determining a second line element parameter set based on each line element after resetting the start point and end point.

[0103] Specifically, based on the third line element parameter set, the multiple line elements of the tunnel to be identified after splitting are sorted in a clockwise or counterclockwise order.

[0104] Furthermore, the starting point and end point of each line element of the tunnel to be identified are reset in the sorting order, i.e. clockwise or counterclockwise order, in order to close the contour section of the tunnel to be identified. Further, the parameters corresponding to each line element after resetting the starting point and end point, i.e., each contour section line element, can be obtained to form a second line element parameter set.

[0105] In one example, the process of resetting the start and end points of the contour element counterclockwise is as follows: Figure 5 shown.

[0106] In some optional implementations, the above step S2032 includes:

[0107] Step b1, based on the second line element parameter set, a fourth line element parameter set is obtained through a preset second processing method.

[0108] Step b2, based on the fourth line element parameter set, obtain the ordinate values ​​of the excavation contour line element vertices, the excavation contour bottom line element vertices, the initial branch contour line element vertices and the initial branch contour bottom line element vertices of the tunnel to be identified.

[0109] Step b3, calculating the thickness of the arch support based on the ordinate values ​​of the vertices of the excavation contour line element and the ordinate values ​​of the vertices of the initial support contour line element.

[0110] Step b4, calculating the bottom support thickness based on the vertical coordinate value of the excavation contour bottom plate line element and the vertical coordinate value of the initial support contour bottom plate line element.

[0111] Specifically, the formatted second line element parameter set is traversed to see if the coordinates of the end point of the previous line element are the same as the starting point of the next line element. If they are not the same, they are reset to the midpoint, i.e., xe i ≠xf i+1 When i =xfi i+1 =0.5*(xe i +xfi i+1 );ye i ≠yf i+1 time, ye i =yf i+1 =0.5*(ye i +yf i+1 ), after processing, the final line element parameter set, i.e., the fourth line element parameter set, can be obtained.

[0112] Further, according to the fourth line element parameter set, the inner and outer contour line element vertices of the tunnel to be identified can be obtained (such as Figure 6 The y value of the excavation contour line element vertex is shown in Figure 1, that is, the ordinate value of the vertex of the excavation contour line element and the ordinate value of the vertex of the initial branch contour line element.

[0113] Among them, the inner contour is the initial support contour and the outer contour is the excavation contour.

[0114] Furthermore, the arch support thickness d of the tunnel to be identified can be obtained by subtracting the ordinate value of the vertex of the initial support contour line element from the ordinate value of the vertex of the excavation contour line element.

[0115] Furthermore, the ordinate values ​​of the excavation profile bottom plate line element and the ordinate values ​​of the initial support profile bottom plate line element of the tunnel to be identified can also be obtained according to the fourth line element parameter set.

[0116] Specifically, find the point where x=0 among the endpoints of the bottom plate line element of the initial support contour and the excavation contour, such as Figure 6 As shown, the y value corresponding to each point x=0 is obtained, that is, the ordinate value of the excavation contour bottom plate line element and the ordinate value of the initial support contour bottom plate line element.

[0117] Furthermore, the bottom support thickness d1 can be obtained by subtracting the ordinate value of the excavation contour bottom plate line element from the ordinate value of the initial support contour bottom plate line element.

[0118] Step S204: Determine the target support mode of the tunnel to be identified based on the arch support thickness and the bottom support thickness. Figure 1 Step S104 of the illustrated embodiment will not be described in detail here.

[0119] Step S205: determine the initial support spraying and mixing position of the tunnel to be identified based on the target support mode. Figure 1 Step S105 of the illustrated embodiment will not be described in detail here.

[0120] The method for distinguishing the initial branch spraying and mixing position of a tunnel provided in this embodiment establishes a rectangular coordinate system through a contour design parameter set, and determines the line element parameter set of the tunnel in combination with the rectangular coordinate system, thereby realizing automatic recognition of the line element parameters, reducing manual input, and avoiding the problem of parameter input errors. Furthermore, the arch support thickness and bottom support thickness of the tunnel are calculated through the line element parameter set, thereby realizing automatic calculation of parameters, reducing human input errors, and improving accuracy, thus providing data support for the subsequent automatic recognition and determination of the initial branch spraying and mixing position of the tunnel.

[0121] In this embodiment, a method for determining the initial branch spray mixing position in a tunnel is provided. Figure 7 : is a flow chart of a method for determining the initial branch injection mixing position of a tunnel according to an embodiment of the present invention. Figure 7 As shown, the process includes the following steps:

[0122] Step S701, obtain the contour design parameter set of the tunnel to be identified. Figure 1 Step S101 of the illustrated embodiment will not be described in detail here.

[0123] Step S702: Establish a rectangular coordinate system based on the contour design parameter set, and determine the first line element parameter set of the tunnel to be identified based on the rectangular coordinate system. Figure 2 Step S202 of the illustrated embodiment will not be described in detail here.

[0124] Step S703, based on the first line element parameter set, the arch support thickness and bottom support thickness of the tunnel to be identified are calculated through the rectangular coordinate system and the preset first processing method. Figure 2 Step S203 of the illustrated embodiment will not be described in detail here.

[0125] Step S704, based on the crown support thickness and the bottom support thickness, determine the target support method of the tunnel to be identified.

[0126] Specifically, the above step S704 includes:

[0127] Step S7041, comparing the bottom support thickness with a preset first threshold, and comparing the arch support thickness with a preset second threshold.

[0128] Specifically, the preset first threshold and the preset second threshold can be set according to the actual design requirements of the tunnel to be identified. For example, in one example, the preset first threshold and the preset second threshold are both 0.02 m.

[0129] Step S7042: When the bottom support thickness is greater than a preset first threshold and the arch support thickness is greater than a preset second threshold, it is determined that the target support method of the tunnel to be identified is full-section spraying of concrete.

[0130] Specifically, when the bottom support thickness d1 is greater than a preset first threshold and the arch support thickness d is greater than a preset second threshold, it can be determined that the target support method of the tunnel to be identified is full-section spraying of concrete.

[0131] Step S7043: When the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, the target support mode of the tunnel to be judged is determined using a preset judgment method.

[0132] Specifically, when the arch support thickness d is greater than the preset second threshold and the bottom support thickness d1 is less than or equal to the preset first threshold, it is necessary to further use the preset judgment method to determine the target support mode of the tunnel to be judged.

[0133] In some optional implementations, the above step S7043 includes:

[0134] Step c1, when the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, it is determined that the initial support method of the tunnel to be identified is partial concrete spraying of the cross section.

[0135] Step c2, calculating the side wall thickness of the tunnel to be identified based on the fourth line element parameter set.

[0136] Step c3, based on the side wall thickness, the preset third threshold value and the preset fourth threshold value, a secondary judgment is made on the initial support mode of the tunnel to be judged, so as to obtain the target support mode of the tunnel to be judged.

[0137] Specifically, when the arch support thickness d is greater than the preset second threshold and the bottom support thickness d1 is less than or equal to the preset first threshold, it can be preliminarily determined that the support method of the tunnel to be identified is local concrete spraying of the cross section.

[0138] Furthermore, the side wall thickness d2 of the tunnel to be identified can be calculated based on the fourth line element parameter set.

[0139] Furthermore, the final support mode of the tunnel to be identified, ie, the target support mode, can be determined according to the side wall thickness d2, the preset third threshold value and the preset fourth threshold value.

[0140] In some optional implementations, the above step c2 includes:

[0141] Step c21, based on the fourth line element parameter set, obtain the maximum horizontal coordinate value of the end point of the line element at the bottom of the excavation profile of the tunnel to be identified and the maximum horizontal coordinate value of the end point of the line element at the bottom plate of the initial support profile.

[0142] Step c22, based on the maximum horizontal coordinate value of the end point of the excavation contour bottom line element and the maximum horizontal coordinate value of the end point of the initial support contour bottom plate line element, calculate the side wall thickness of the tunnel to be identified.

[0143] Specifically, according to the fourth line element parameter set, the maximum x value of the bottom plate line element endpoints of the initial support contour and the excavation contour, that is, the maximum horizontal coordinate value of the bottom line element endpoint of the excavation contour and the maximum horizontal coordinate value of the bottom plate line element endpoint of the initial support contour can be found.

[0144] Furthermore, the maximum horizontal coordinate value of the endpoint of the excavation contour bottom line element minus the maximum horizontal coordinate value of the endpoint of the initial support contour bottom plate line element can be used to obtain the side wall thickness d2 of the tunnel to be identified.

[0145] In some optional implementations, the above step c3 includes:

[0146] Step c31, comparing the side wall thickness with a preset third threshold and a preset fourth threshold respectively.

[0147] Step c32, when the thickness of the side wall is greater than the preset third threshold value, it is determined that the target support method of the tunnel to be identified is a mixed support method of section side wall and top arch sprayed concrete.

[0148] Step c33, when the side wall thickness is less than or equal to the preset fourth threshold, determine that the target support method of the tunnel to be identified is local spraying of concrete on the cross section.

[0149] The preset third threshold and the preset fourth threshold can be set according to the actual design requirements of the tunnel to be identified. For example, in one example, the preset third threshold is 0.02m, and the preset fourth threshold is 0.03m.

[0150] Specifically, when the side wall thickness d2 is greater than the preset third threshold value, it can be determined that the target support method of the tunnel to be identified is section side wall + top arch spraying concrete.

[0151] Further, when the side wall thickness d2 is less than or equal to the preset fourth threshold, it can be determined that the target support method of the tunnel to be identified is the partial concrete spraying of the section determined initially.

[0152] Step S705, determining the initial support spraying and mixing position of the tunnel to be identified based on the target support method.

[0153] Specifically, the above step S705 includes:

[0154] Step S7051, based on the target support method, the target support limit of the tunnel to be identified is calculated using the binary iteration method.

[0155] Specifically, when the target support method is full-section concrete spraying, there is no corresponding target support limit and no calculation is required.

[0156] When the target support method is local concrete spraying on the cross section, the target support boundary border of the tunnel to be identified is calculated using the binary iteration method:

[0157] (1) Figure 8 As shown, find the inner contour vertex y=y max and the maximum y value of the inner contour bottom line element (position_type_id = 3 or 4) y = y min ,y mid =0.5*(y max +y min ). At this time, d mid =0.

[0158] (2)y max -y min ≥0.01, calculate d mid The value of , further, if d mid <0.02, then y min =y mid And y mid =0.5*(y max +y min ); if d mid ≥0.02, then y max =y mid And y mid =0.5*(y max +y min ).

[0159] Among them, d mid The calculation method is as follows:

[0160] Traverse the inner and outer contour line elements, calculate the line element and the detection line Y=y mid The leftmost intersection coordinates, the inner contour intersection coordinates are marked as p s (x s ,y mid ), the coordinates of the intersection with the outer contour are marked as p w (x w ,y mid). The calculation method of the coordinates of the leftmost intersection point between the line element and the detection line Y= is as follows:

[0161] (21) Take a line element of the contour, when the line element is a straight line:

[0162] Judgment 1: y f -y e =0, the line element is a horizontal line element, has no intersection with the detection line, and the line element detection is completed;

[0163] Judgment 2: x e ≥0 and x f ≥0, the line element is the right line element, which is not calculated and the line element detection is completed;

[0164] Judgment 3: x f -x e = 0, the line element is a vertical line: judge (y f -y mid )*(y e -y mid )≤0, there is an intersection point p on the inner contour s (x s =x f ,y s =y mid ), the line element detection is completed;

[0165] Judgment 4: k = |y f -y e | / |x f -x e |>0.0278, judge (y f -y mid )*(y e -y mid )≤0, the line element has an inner contour intersection point p s , calculate p s coordinate:

[0166] Calculate line k =(y f -y e ) / (x f -x e );line b =y f -line k *x f

[0167] Calculate x s =(y mid -line b ) / line k , p s Coordinate (x s ,ys =y mid ), the line element detection is completed.

[0168] (22) When the line element is an arc:

[0169] Judgment 1: x e ≥ and x f ≥0, the line element is the right line element, which is not calculated and the line element detection is completed;

[0170] Judgment 2: Judgment (y f -y mid )*(y e -y mid )≤0, the line element has an inner contour intersection point p s , calculate p s coordinate:

[0171]

[0172] Finally, after traversing the line elements of the two contours to obtain the coordinates of the two intersection points, calculate d mid =x s -x w .

[0173] (3)y max -y min <0.01, border=y mid , the loop ends, otherwise execute the previous step.

[0174] Step S7052, based on the target support method and the target support limit, determine the initial support spraying and mixing position of the tunnel to be identified.

[0175] Specifically, the initial support spraying and mixing position of the tunnel to be identified can be determined according to the finally determined target support method and the corresponding target support limit.

[0176] The method for distinguishing the initial branch spraying and mixing position of a tunnel provided in this embodiment further determines the target support method of the tunnel to be distinguished in combination with the calculated side wall thickness of the tunnel to be distinguished, thereby improving the accuracy of the target support method. The side wall thickness of the tunnel to be distinguished is calculated by the line element parameter set, thereby realizing the automatic calculation of parameters, reducing human input errors and improving accuracy. Furthermore, the target support limit of the tunnel to be distinguished is calculated by the binary iteration method, thereby realizing the automatic calculation of the support limit. Furthermore, in combination with the determined target support method, the automatic identification and determination of the initial branch spraying and mixing position of the tunnel can be realized, thereby improving the spraying effect.

[0177] In this embodiment, a device for distinguishing the initial branch injection and mixing position of a tunnel is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0178] This embodiment provides a device for determining the initial branch injection and mixing position of a tunnel. Fig. 9 As shown, including:

[0179] The acquisition module 901 is used to acquire a set of contour design parameters of the tunnel to be identified.

[0180] The establishing and determining module 902 is used to establish a rectangular coordinate system based on the contour design parameter set, and determine the first line element parameter set of the tunnel to be identified based on the rectangular coordinate system.

[0181] The calculation module 903 is used to calculate the vault support thickness and the bottom support thickness of the tunnel to be identified based on the first line element parameter set, through a rectangular coordinate system and a preset first processing method.

[0182] The first determination module 904 is used to determine the target support mode of the tunnel to be identified based on the arch support thickness and the bottom support thickness.

[0183] The second determination module 905 is used to determine the initial support spraying and mixing position of the tunnel to be identified based on the target support mode.

[0184] In some optional implementations, establishing and determining a module includes:

[0185] The first acquisition submodule is used to acquire the design elevation and center line of the tunnel to be identified based on the contour design parameter set.

[0186] A submodule is established to establish a rectangular coordinate system with the intersection of the design elevation and the center line as the origin.

[0187] The second acquisition submodule is used to respectively acquire a plurality of line elements of the excavation contour and the initial branch contour in the tunnel to be identified.

[0188] The first determining submodule is used to determine a first line element parameter set corresponding to a plurality of line elements based on a rectangular coordinate system.

[0189] In some optional implementations, the calculation module 903 includes:

[0190] The processing submodule is used to process a plurality of line elements of the tunnel to be identified based on the first line element parameter set by using a preset first processing method to obtain a second line element parameter set.

[0191] The first calculation submodule is used to calculate the vault support thickness and the bottom support thickness of the tunnel to be identified based on the second line element parameter set.

[0192] In some optional implementations, the processing submodule includes:

[0193] The first determining unit is used to determine at least one line element intersecting with the ordinate axis in the rectangular coordinate system based on the first line element parameter set.

[0194] The splitting and determining unit is used to split each line element and determine the line element parameters of each line element after splitting based on a rectangular coordinate system.

[0195] The second determining unit is used to determine a third line element parameter set based on the first line element parameter set and the line element parameters of each line element after splitting.

[0196] The first processing unit is used to process the split multiple line elements of the tunnel to be identified based on the third line element parameter set, and obtain a second line element parameter set.

[0197] In some optional implementations, the first processing unit includes:

[0198] The sorting subunit is used to sort the multiple line elements of the tunnel to be identified after being split according to a preset order based on the third line element parameter set.

[0199] The resetting and determining subunit is used to reset the starting point and the end point of each sorted line element according to a preset order, and determine a second line element parameter set based on each line element after resetting the starting point and the end point.

[0200] In some optional implementations, the first computing submodule includes:

[0201] The second processing unit is used to obtain a fourth line element parameter set based on the second line element parameter set through a preset second processing method.

[0202] The acquisition unit is used to obtain the vertical coordinate values ​​of the excavation contour line element vertices, the vertical coordinate values ​​of the excavation contour bottom line element, the vertical coordinate values ​​of the initial branch contour line element vertices and the vertical coordinate values ​​of the initial branch contour bottom line element of the tunnel to be identified based on the fourth line element parameter set.

[0203] The first calculation unit is used to calculate the thickness of the arch support based on the ordinate values ​​of the vertices of the excavation contour line element and the ordinate values ​​of the vertices of the initial support contour line element.

[0204] The second calculation unit is used to calculate the bottom support thickness based on the ordinate value of the excavation contour bottom plate line element and the ordinate value of the initial support contour bottom plate line element.

[0205] In some optional implementations, the first determining module 904 includes:

[0206] The comparison submodule is used to compare the bottom support thickness with a preset first threshold value, and to compare the arch support thickness with a preset second threshold value.

[0207] The second determination submodule is used to determine that the target support method of the tunnel to be identified is full-section spraying of concrete when the bottom support thickness is greater than a preset first threshold and the arch support thickness is greater than a preset second threshold.

[0208] The third determination submodule is used to determine the target support mode of the tunnel to be determined by using a preset judgment method when the arch support thickness is greater than a preset second threshold and the bottom support thickness is less than or equal to a preset first threshold.

[0209] In some optional implementations, the third determining submodule includes:

[0210] The third determination unit is used to determine that the initial support method of the tunnel to be identified is partial concrete spraying of the cross section when the arch support thickness is greater than a preset second threshold and the bottom support thickness is less than or equal to a preset first threshold.

[0211] The third calculation unit is used to calculate the side wall thickness of the tunnel to be identified based on the fourth line element parameter set.

[0212] The judgment unit is used to make a secondary judgment on the initial support mode of the tunnel to be judged based on the side wall thickness, the preset third threshold value and the preset fourth threshold value, so as to obtain the target support mode of the tunnel to be judged.

[0213] In some optional implementations, the third computing unit includes:

[0214] The acquisition subunit is used to obtain the maximum horizontal coordinate value of the end point of the bottom line element of the excavation profile of the tunnel to be identified and the maximum horizontal coordinate value of the end point of the bottom plate line element of the initial support profile based on the fourth line element parameter set.

[0215] The calculation subunit is used to calculate the side wall thickness of the tunnel to be identified based on the maximum horizontal coordinate value of the end point of the excavation contour bottom line element and the maximum horizontal coordinate value of the end point of the initial support contour bottom plate line element.

[0216] In some optional implementations, the judging unit includes:

[0217] The comparison subunit is used to compare the side wall thickness with a preset third threshold and a preset fourth threshold respectively.

[0218] The first determination subunit is used to determine that the target support method of the tunnel to be identified is a mixed support method of section side wall and top arch sprayed concrete when the side wall thickness is greater than a preset third threshold.

[0219] The second determination subunit is used to determine that the target support method of the tunnel to be identified is partial concrete spraying of the cross section when the thickness of the side wall is less than or equal to a preset fourth threshold value.

[0220] In some optional implementations, the second determining module 905 includes:

[0221] The second calculation submodule is used to calculate the target support limit of the tunnel to be identified based on the target support method using a binary iteration method.

[0222] The fourth determination submodule is used to determine the initial support spraying and mixing position of the tunnel to be identified based on the target support method and the target support limit.

[0223] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0224] The tunnel initial branch injection and mixing position determination device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0225] The embodiment of the present invention also provides a computer device having the above Fig. 9 The device for identifying the initial branch spray mixing position in the tunnel is shown.

[0226] See also Fig.10 , Fig.10 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Fig.10 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Fig.10 A processor 10 is taken as an example.

[0227] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0228] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0229] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0230] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0231] The computer device further comprises a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0232] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0233] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for determining the initial branch spray mixing position in a tunnel, characterized in that: The method comprises: Obtaining a set of contour design parameters of the tunnel to be identified; Establishing a rectangular coordinate system based on the contour design parameter set, and determining a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system; Based on the first line element parameter set, the vault support thickness and the bottom support thickness of the tunnel to be identified are calculated through the rectangular coordinate system and the preset first processing method; Determining a target support mode of the tunnel to be identified based on the arch support thickness and the bottom support thickness; Determining the initial support spraying and mixing position of the tunnel to be identified based on the target support mode; Wherein, based on the first line element parameter set, through the rectangular coordinate system and the preset first processing method, the vault support thickness and the bottom support thickness of the tunnel to be identified are calculated, including: Based on the first line element parameter set, the plurality of line elements of the tunnel to be identified are processed using the preset first processing method to obtain a second line element parameter set; Based on the second line element parameter set, calculating the vault support thickness and the bottom support thickness of the tunnel to be identified; Wherein, based on the first line element parameter set, the plurality of line elements of the tunnel to be identified are processed using the preset first processing method to obtain a second line element parameter set, including: Based on the first line element parameter set, determining at least one line element intersecting with the ordinate axis in the rectangular coordinate system; Performing splitting processing on each of the line elements, and determining line element parameters of each of the split line elements based on the rectangular coordinate system; Determine a third line element parameter set based on the first line element parameter set and the line element parameters of each of the split line elements; Based on the third line element parameter set, the split multiple line elements of the tunnel to be identified are processed to obtain the second line element parameter set; Wherein, based on the third line element parameter set, the split multiple line elements of the tunnel to be identified are processed to obtain the second line element parameter set, including: Based on the third line element parameter set, sorting the split multiple line elements of the tunnel to be identified in a preset order; The starting point and the end point of each sorted line element are reset according to the preset order, and the second line element parameter set is determined based on each line element after resetting the starting point and the end point.

2. The method according to claim 1, characterized in that Establishing a rectangular coordinate system based on the contour design parameter set, and determining a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system, including: Acquire the design elevation and center line of the tunnel to be identified based on the contour design parameter set; Taking the intersection of the design elevation and the center line as the origin and establishing the rectangular coordinate system; Respectively obtaining a plurality of line elements of the excavation profile and the initial branch profile in the tunnel to be identified; The first line element parameter set corresponding to the plurality of line elements is determined based on the rectangular coordinate system.

3. The method according to claim 1, characterized in that Calculating the crown support thickness and the bottom support thickness of the tunnel to be identified based on the second line element parameter set includes: Based on the second line element parameter set, a fourth line element parameter set is obtained by a preset second processing method; Based on the fourth line element parameter set, the vertical coordinate values ​​of the excavation contour line element vertices, the vertical coordinate values ​​of the excavation contour bottom plate line element, the vertical coordinate values ​​of the initial branch contour line element vertices and the vertical coordinate values ​​of the initial branch contour bottom plate line element of the tunnel to be identified are obtained; Calculate the vault support thickness based on the ordinate value of the excavation contour line element vertex and the ordinate value of the initial support contour line element vertex; Calculate the bottom support thickness based on the vertical coordinate value of the excavation contour bottom plate line element and the vertical coordinate value of the initial support contour bottom plate line element; Wherein, based on the second line element parameter set, a fourth line element parameter set is obtained by a preset second processing method, including: Traversing the second line element parameter set and determining whether the coordinates of the end point of the previous line element are the same as the starting point of the next line element; If the coordinates of the end point of the previous line element are different from the starting point of the next line element, the coordinates of the end point of the previous line element and the starting point of the next line element are reset to the midpoint coordinates of the previous line element and the next line element until the traversal of the second line element parameter set is completed to obtain the fourth line element parameter set.

4. The method according to claim 3, characterized in that: Determining a target support mode of the tunnel to be identified based on the arch support thickness and the bottom support thickness includes: Comparing the bottom support thickness with a preset first threshold, and comparing the arch support thickness with a preset second threshold; When the bottom support thickness is greater than the preset first threshold and the arch support thickness is greater than the preset second threshold, determining that the target support method of the tunnel to be identified is full-section spraying; When the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, the target support mode of the tunnel to be identified is determined using a preset judgment method.

5. The method according to claim 4, characterized in that When the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, the target support mode of the tunnel to be identified is determined by using a preset judgment method, including: When the arch support thickness is greater than the preset second threshold and the bottom support thickness is less than or equal to the preset first threshold, determining that the initial support method of the tunnel to be identified is local concrete spraying of the cross section; Calculating the side wall thickness of the tunnel to be identified based on the fourth line element parameter set; Based on the side wall thickness, a preset third threshold and a preset fourth threshold, a secondary judgment is made on the initial support mode of the tunnel to be determined to obtain the target support mode of the tunnel to be determined.

6. The method according to claim 5, characterized in that Calculating the side wall thickness of the tunnel to be identified based on the fourth line element parameter set includes: Based on the fourth line element parameter set, the maximum horizontal coordinate value of the end point of the line element at the bottom of the excavation profile of the tunnel to be identified and the maximum horizontal coordinate value of the end point of the line element at the bottom plate of the initial support profile are obtained; Based on the maximum horizontal coordinate value of the end point of the bottom line element of the excavation contour and the maximum horizontal coordinate value of the end point of the bottom plate line element of the initial support contour, the side wall thickness of the tunnel to be identified is calculated.

7. The method according to claim 5, characterized in that Based on the side wall thickness, the preset third threshold value and the preset fourth threshold value, a secondary judgment is made on the initial support mode of the tunnel to be determined to obtain the target support mode of the tunnel to be determined, including: Comparing the sidewall thickness with the preset third threshold and the preset fourth threshold respectively; When the thickness of the side wall is greater than the preset third threshold, determining that the target support mode of the tunnel to be identified is a mixed support mode of section side wall and top arch sprayed concrete; When the side wall thickness is less than or equal to the preset fourth threshold, it is determined that the target support method of the tunnel to be identified is local concrete spraying of the section.

8. The method according to claim 1, characterized in that Determining the initial support spraying and mixing position of the tunnel to be identified based on the target support mode includes: Based on the target support mode, the target support limit of the tunnel to be identified is calculated using a binary iteration method; Based on the target support mode and the target support limit, the initial branch spraying and mixing position of the tunnel to be identified is determined.

9. A device for identifying the initial branch spraying and mixing position in a tunnel, characterized in that: The device comprises: An acquisition module, used for acquiring a set of contour design parameters of a tunnel to be identified; An establishing and determining module, used for establishing a rectangular coordinate system based on the contour design parameter set, and determining a first line element parameter set of the tunnel to be identified based on the rectangular coordinate system; A calculation module, used to calculate the vault support thickness and the bottom support thickness of the tunnel to be identified based on the first line element parameter set, through the rectangular coordinate system and a preset first processing method; A first determination module is used to determine the target support mode of the tunnel to be identified based on the arch support thickness and the bottom support thickness; A second determination module is used to determine the initial support spraying and mixing position of the tunnel to be identified based on the target support mode; Wherein, the calculation module includes: A processing submodule, configured to process the plurality of line elements of the tunnel to be identified based on the first line element parameter set using the preset first processing method to obtain a second line element parameter set; A first calculation submodule, configured to calculate the crown support thickness and the bottom support thickness of the tunnel to be identified based on the second line element parameter set; Wherein, the processing submodule includes: A first determining unit, configured to determine, based on the first line element parameter set, at least one line element intersecting with a ordinate axis in the rectangular coordinate system; A splitting and determining unit, used for performing splitting processing on each of the line elements, and determining the line element parameters of each of the line elements after splitting based on the rectangular coordinate system; A second determining unit, configured to determine a third line element parameter set based on the first line element parameter set and the line element parameters of each of the split line elements; A first processing unit, configured to process the split multiple line elements of the tunnel to be identified based on the third line element parameter set, and obtain the second line element parameter set; Wherein, the first processing unit includes: A sorting subunit, used for sorting the split multiple line elements of the tunnel to be identified in a preset order based on the third line element parameter set; The resetting and determining subunit is used to reset the starting point and the end point of each sorted line element according to the preset order, and determine the second line element parameter set based on each line element after resetting the starting point and the end point.

10. The device according to claim 9, characterized in that The establishment and determination module includes: A first acquisition submodule is used to acquire the design elevation and center line of the tunnel to be identified based on the contour design parameter set; Establishing a submodule, for establishing the rectangular coordinate system with the intersection of the design elevation and the center line as the origin; The second acquisition submodule is used to respectively acquire a plurality of line elements of the excavation contour and the initial branch contour in the tunnel to be identified; The first determining submodule is used to determine the first line element parameter set corresponding to the multiple line elements based on the rectangular coordinate system.

11. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for determining the initial branch injection mixing position of a tunnel according to any one of claims 1 to 8 by executing the computer instructions.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method for determining the initial branch injection mixing position of a tunnel according to any one of claims 1 to 8.

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