Determination method, terminal device and storage medium applicable to Norwegian standards for hydraulic tunnels

Abstract

The present invention discloses a determination method, terminal device and storage medium applicable to the Norwegian criteria for hydraulic tunnels. Based on the three-dimensional hydraulic tunnel axis and the three-dimensional terrain and geological model, the method automatically calculates the minimum distance from any point to the strongly weathered geological surface along the hydraulic tunnel axis, and automatically calculates the comprehensive slope angle of a certain range of the surface area corresponding to the minimum distance position according to a certain calculation principle to perform Norwegian criteria determination. This method can realize all-round Norwegian criteria determination for any point on the tunnel axis, making the determination result more efficient, more accurate and more reliable.

Description

Technical Field

[0001] The present invention relates to a surface rock mass parameter calculation technology, in particular to a determination method, terminal equipment and storage medium applicable to the Norwegian criteria for hydraulic tunnels. Background Art

[0002] A hydraulic tunnel is a water passage excavated within a mountain or underground for hydropower and water conservancy projects. The depth of the tunnel buried within the rock mass, or the thickness of the rock cover above the tunnel roof or along the mountain bank, is generally referred to as the surrounding rock cover. This thickness is related to factors such as the stability, resistance, and anti-seepage capacity of the surrounding rock. Because rock mass is a uniquely anisotropic material, its physical and mechanical parameters not only vary in different directions but also often change abruptly within a limited range. Therefore, design decisions must be made based on a comprehensive analysis of the specific circumstances.

[0003] For pressurized tunnels, if the bearing capacity of the surrounding rock is to be utilized, the thickness of the surrounding rock cover is a key consideration during design. Currently, internationally accepted criteria for determining the thickness of surrounding rock cover for pressurized tunnels include the vertical criterion, the Snow Mountain criterion, and the Norwegian criterion. The Norwegian criterion is recommended by the Code for Design of Hydraulic Tunnels (NB / T 10391-2020) and is widely used in hydropower projects.

[0004] The Norwegian Criteria formula is:

[0005]

[0006] Where:

[0007] C RM —Minimum rock cover thickness (excluding the thickness of fully and strongly weathered rock mass) (m);

[0008] h s —Hydrostatic head in the cave (m);

[0009] γ W —Gravity of water (N / mm 3 )

[0010] γ R —The density of rock mass (N / mm 3 )

[0011] α—surface rock slope angle (°), when α>60°, α is taken as 60°;

[0012] F—empirical coefficient, generally 1.30~1.50 is determined according to the surrounding rock conditions, and a higher value is taken when the geological conditions are poor.

[0013] In the application of the Norwegian standard, the longitudinal section is usually obtained by cutting along the tunnel axis (such as Figure 1), estimate the surface rock slope α according to the longitudinal profile, select some control points on the tunnel axis to calculate the minimum cover thickness C RM The method is then compared with the actual cover thickness to determine whether the Norwegian standard is met. If the lateral depth of some control points is insufficient, a longitudinal section is cut laterally and verified using the above method. The main shortcomings of this method are as follows: 1) The rock slope α is calculated based on empirical estimates along the longitudinal section, without a clear estimation principle. 2) Manual verification can only select a limited number of control points along the tunnel axis for verification, resulting in incomplete results. 3) If the longitudinal section is cut along the tunnel axis for verification, if the lateral depth of a certain area needs to be verified, another longitudinal section needs to be cut laterally for verification, making the calculation process cumbersome and inaccurate. Summary of the Invention

[0014] The technical problem to be solved by the present invention is to provide a determination method, terminal device and storage medium applicable to the Norwegian criteria for hydraulic tunnels in view of the shortcomings of the existing technology, which effectively solves the problem that the traditional manual calculation mode can only select some control points for calculation and the calculation results are incomplete.

[0015] To solve the above technical problems, the technical solution adopted by the present invention is: a determination method applicable to the Norwegian criteria for hydraulic tunnels, comprising the following steps:

[0016] S1. Create a three-dimensional model of the hydraulic tunnel axis and introduce a three-dimensional terrain surface model and a strongly weathered geological surface model; the three-dimensional terrain surface model is the terrain surface, and the strongly weathered geological surface model is the weathering surface;

[0017] S2. Set the calculation step length ls, unit: m; set the starting point and end point on the hole axis, determine the calculation analysis range of the Norwegian standard, the hole axis length between the starting point and the end point is L; set the spherical radius calculation step length Lr, unit: m; set the rock slope angle calculation radius R α , calculate the height H of the cylindrical surface α , unit: m;

[0018] S3. According to the length of the tunnel axis L and the calculation step length ls, calculate the number of control points Ns required for the Norwegian standard judgment as L / ls, round down, start from the starting point of the tunnel axis, traverse according to the calculation step length ls, let N = i, L i =i×ls, i=1,2,3…Ns, from the starting point to the end point of the hole axis, take the length L along the hole axis i Determine the i-th control point K i , the coordinates are (X i ,Y i ,Z i );

[0019] S4. Initialize j=1;

[0020] S5. Set the spherical radius R j =j×Lr, with control point K i is the center of the sphere, R j Create a spherical surface for the radius and determine whether the spherical surface intersects with the weathering surface;

[0021] If the result is non-intersection, the control point is taken as the center of the sphere, R j+1 Create a sphere for the radius and determine whether the sphere intersects with the weathering surface; if the result is an intersection, the shortest distance C from the control point to the weathering surface is i =R j-1 +R j , extract the intersection curve S between the spherical surface and the weathering surface i , go to step S7; C i is the control point K i The corresponding actual rock cover thickness;

[0022] S6, repeat step S5 until the result is determined to be intersection;

[0023] S7, using the intersection curve S i Calculate the rock slope angle α corresponding to the i-th control point i ;

[0024] S8. Calculate the i-th control point K using the Norwegian criterion formula i Corresponding minimum coverage thickness C RM is the minimum cover thickness of the rock mass, in m; h s is the hydrostatic pressure head in the tunnel, in m; γ W is the density of water in N / mm 3 ; γ R is the density of the rock mass, in N / mm 3 ; α i is the surface rock slope angle corresponding to the i-th control point, α i When α>60°, i Take it as 60°; F is the empirical coefficient;

[0025] S9, let N=i+1, L i+1 =(i+1)×ls, from the starting point to the end point of the hole axis, take the length L along the hole axis i+1 Determine the i+1th control point K i+1 Repeat steps S4 to S8 until N=Ns;

[0026] S10. Analyze the Norwegian criteria determination results along the hydraulic tunnel in the form of statistical curves.

[0027] The present invention is based on a three-dimensional hydraulic tunnel axis and a three-dimensional terrain and geological model. It automatically calculates the minimum distance from any point along the hydraulic tunnel axis to the strongly weathered geological surface. In accordance with a predetermined calculation principle, it automatically calculates the comprehensive slope angle of a certain range of the surface area corresponding to the minimum distance position, and performs Norwegian criteria judgment. This can achieve all-round Norwegian criteria judgment for any point on the tunnel axis, making the judgment result more efficient, accurate, and reliable.

[0028] The specific implementation process of step S5 includes:

[0029] 1) Calculate the intersection curve S i The coordinate range [(X min ,X max ),(Y min ,Y max ),(Z min ,Z max )], set point Ts

[0030] (X S ,Y S ,Z S ) is the curve S i For any point on X min ≤X s ≤X max , Y min ≤Y s ≤Y max , Z min ≤Z s

[0031] ≤Z max ;

[0032] 2) Let the calculation point T i The coordinates are Through the control point K i and calculation point T i Creating a Direction Vector

[0033] 3) T i is the center of the circle, R α As the radius, create a circle on the normal plane of the direction vector kt, and stretch it along the direction of vector kt and its opposite direction to form a cylindrical surface. The unidirectional stretching height H α , determine whether the cylindrical surface and the terrain surface completely intersect; if the result is no intersection or incomplete intersection, continue to stretch H along the direction of vector kt and its opposite direction α The height of the cylinder surface is used to determine whether the cylinder surface and the terrain surface are completely intersected; this cycle is repeated until the result is that they are completely intersected; if the result is that they are completely intersected, the curve H where the terrain surface and the cylinder surface completely intersect is extracted. i ;

[0034] 4) Calculate the curve H using the third-order unweighted difference method i The slope of all locations on the terrain within the range and the average slope value slp are calculated i , then the rock slope angle α i =atan(slp i ).

[0035] Compared with the traditional method of calculating the shortest distance by cutting a two-dimensional profile, the above step S5 can more accurately calculate the shortest distance from any control point on the tunnel line to the three-dimensional weathering surface, the analysis result is more representative, and the influence of human factors is reduced.

[0036] Step S8 also includes: comparing the i-th control point K i The corresponding minimum rock cover thickness C RMi and the actual rock cover thickness C i If C i >C RMi , then the control point K i Meet the minimum cover thickness requirements determined by the Norwegian standard; if C i ≤C RMi , then the control point K i The minimum cover thickness requirement as determined by the Norwegian Guidelines is not met.

[0037] The specific implementation process of step S10 includes:

[0038] Take the control point K on the hole axis i The length of the tunnel line between the starting point of the tunnel axis is the horizontal coordinate, and the unit of the tunnel line length is m; the control point K on the tunnel axis i The corresponding minimum rock cover thickness C RMi and the actual rock cover thickness C i is the vertical axis, the minimum rock cover thickness C RMi and the actual rock cover thickness C i The unit is m; the minimum rock cover thickness C corresponding to each control point RMi and the actual rock cover thickness C i Connect the lines to generate statistical curves;

[0039] If the minimum cover thickness of the rock mass is C RMi The vertical coordinate of any point on the curve is lower than the actual cover thickness of the rock mass C i The vertical coordinate value of the curve is used to determine that the hydraulic tunnel meets the requirements of the Norwegian standard.

[0040] If there is a minimum rock mass cover thickness C at a certain section of the tunnel axis RMi The vertical coordinate of the curve is higher than the actual cover thickness of the rock mass C i The vertical coordinate value of the curve is not sufficient, so it is determined that the hydraulic tunnel in this section does not meet the requirements of the Norwegian standard.

[0041] As an inventive concept, the present invention also provides a terminal device, including a memory, a processor, and a computer program stored in the memory; the processor executes the computer program to implement the steps of the above method.

[0042] As an inventive concept, the present invention also provides a computer-readable storage medium having a computer program / instruction stored thereon; the computer program / instruction implements the steps of the above method when executed by a processor.

[0043] As an inventive concept, the present invention also provides a computer program product, comprising a computer program / instruction; when the computer program / instruction is executed by a processor, the steps of the above method are implemented.

[0044] Compared with the existing technology, the present invention has the following beneficial effects: based on the three-dimensional hydraulic tunnel axis and the three-dimensional terrain geological model, the present invention automatically calculates the minimum distance from any point along the hydraulic tunnel axis to the strongly weathered geological surface, and according to the determined calculation principle, automatically calculates the comprehensive slope angle of a certain range of the surface area corresponding to the minimum distance position, and performs Norwegian criterion judgment, which can achieve a full range of Norwegian criterion judgments at any point on the tunnel axis, making the judgment results more efficient, more accurate, and more reliable. The present invention proposes a calculation method for the comprehensive slope angle of the surface rock mass. By developing corresponding software functions, it can effectively solve the problem that the traditional manual calculation mode can only select some control points for calculation and the calculation results are incomplete; and it can calculate the Norwegian criterion judgment of any point along the tunnel in any direction, and obtain the minimum surrounding rock cover thickness, solving the problems of the traditional calculation process being cumbersome, inefficient, and inaccurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the three-dimensional model of the hydraulic tunnel axis, terrain surface, and weathering surface;

[0046] Figure 2 The shortest distance corresponds to the intersection curve S between the spherical surface and the weathering surface i and calculation point T i Schematic diagram;

[0047] Figure 3 This is a schematic diagram of the complete intersection range between the cylindrical surface and the terrain surface;

[0048] Figure 4 It is a schematic diagram of the terrain slope in the intersection range of the cylindrical surface and the terrain surface;

[0049] Figure 5 This is a statistical curve chart for determining the axis of a hydraulic tunnel using the Norwegian criteria. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0051] Example 1

[0052] This embodiment provides a Norwegian criteria determination method based on a three-dimensional model, comprising the following steps:

[0053] Step (1): Use 3D design software to create a 3D model of the hydraulic tunnel axis, and introduce a 3D terrain surface model (hereinafter referred to as "terrain surface") and a strongly weathered geological surface model (hereinafter referred to as "weathering surface").

[0054] Step (2): Set the calculation step length ls, unit: m; set the starting point and end point on the hole axis, determine the calculation analysis range of the Norwegian standard, the hole axis length between the starting point and the end point is L; set the spherical radius calculation step length lr, unit: m. Set the rock slope angle calculation radius R α , calculate the height H of the cylindrical surface α , unit: m.

[0055] Step (3): Based on the calculated length of the tunnel axis L and the calculation step length ls, the number of control points Ns required for the Norwegian criteria judgment can be calculated as L / ls rounded down. Starting from the starting point of the tunnel axis, traverse according to the calculation step length ls. Let N = i, L i =i×ls, (i=1,2,3…Ns), from the starting point to the end point of the hole axis, take the length L along the hole axis i Determine the i-th control point K i , the coordinates are (X i ,Y i ,Z i ).

[0056] Step (4): Lr is the step length for calculating the spherical radius, and the cycle continues. When M=j, the spherical radius R j =j×Lr, (j=1.2.3…), with control point K i As the center of the sphere, R j Create a spherical surface for the radius and determine whether the spherical surface intersects with the weathering surface.

[0057] If the result is non-intersection, set M=j+1, take the control point as the center of the sphere, R j+1 Create a spherical surface for the radius and determine whether the spherical surface intersects with the weathering surface; repeat the process until the result is that they intersect.

[0058] If the result is intersection, the shortest distance C from the control point to the weathering surface is i =R j-1 +R j ,(When j=1, R j-1 = 0), extract the intersection curve S of the spherical surface and the weathering surface i , and exit the loop. C i That is the control point K i The corresponding actual rock cover thickness.

[0059] Step (5): Calculate the rock slope angle α corresponding to the i-th control point i .

[0060] Step 5.1: Calculate the intersection curve S i The coordinate range [(X min ,X max ),(Y min ,Y max ),(Z min ,Z max )], assuming that point Ts(X S ,Y S ,Z S ) is the curve S i For any point on X min ≤X s ≤X max , Y min ≤Y s ≤Y max , Z min ≤Z s ≤Z max .

[0061] Step 5.2: Let the calculation point T i The coordinates are Through the control point K i and calculation point T i Creating a Direction Vector

[0062] Step 5.3: Take T i is the center of the circle, R α As the radius, create a circle on the normal plane of the direction vector kt, and stretch it along the direction of vector kt and its opposite direction to form a cylindrical surface. The unidirectional stretching height H α , determine whether the cylindrical surface and the terrain surface completely intersect (the intersection line is a closed curve).

[0063] If the result is non-intersection or incomplete intersection, continue stretching H along the direction of vector kt and in the opposite direction. αThe height of the cylinder surface is used to determine whether the cylinder surface and the terrain surface completely intersect (the intersection line is a closed curve); the process is repeated until the result is that they completely intersect.

[0064] If the result is a complete intersection, the complete intersection curve H between the terrain surface and the cylindrical surface is extracted. i .

[0065] Step 5.4: Calculate the curve H using the third-order unweighted difference algorithm (Liu Xuejun, Gong Jianya, Zhou Qiming, et al. Analysis and research on the accuracy of slope and aspect algorithm based on DEM [J]. Acta Geodaetica et Cartographica Sinica, 2004, (03): 258-263.) i The slope of all locations on the terrain within the range and the average slope value slp are calculated i Then the rock mass slope angle α i =atan(slp i ).

[0066] Step (6): Calculate the i-th control point K using the Norwegian criterion formula i Corresponding minimum covering thickness C RMi :

[0067]

[0068] Compare the i-th control point K i The corresponding minimum rock cover thickness C RMi and the actual rock cover thickness C i ,

[0069] If C i >C RMi , then the control point K i Meet the minimum cover thickness requirements determined by the Norwegian guidelines;

[0070] If C i ≤C RMi , then the control point K i The minimum cover thickness requirement as determined by the Norwegian Guidelines is not met.

[0071] Step (7): Let N = i + 1, L i+1 =(i+1)×ls, (i=1,2,3…Ns), from the starting point to the end point of the hole axis, take the length L along the hole axis i+1 Determine the i+1th control point K i+1 Repeat steps (4) to (6) until N=Ns.

[0072] Step (8): Analyze the Norwegian criteria determination results along the hydraulic tunnel in the form of statistical curves to assist in hydraulic tunnel design decision-making.

[0073] Step 8.1: Generate the statistical curve of the Norwegian criteria judgment results, with the horizontal axis being the control point K on the hole axis. i The length of the tunnel line from the starting point of the tunnel axis, unit: m; the vertical coordinate is the control point K on the tunnel axis i (i=1,2,3…Ns) The minimum rock cover thickness C corresponding to RMi and the actual rock cover thickness C i , unit: m. The minimum rock mass cover thickness C corresponding to each control point RMi and the actual rock cover thickness C i Connect the lines to generate statistical curves.

[0074] Step 8.2: Analyze the relationship between the minimum rock mass coverage thickness curve and the actual rock mass coverage thickness curve:

[0075] If the minimum cover thickness of the rock mass is C RMi The vertical coordinate of any point on the curve is lower than the actual cover thickness of the rock mass C i The vertical coordinate value of the curve indicates that the hydraulic tunnel meets the requirements of the Norwegian standard.

[0076] If there is a minimum rock mass cover thickness C at a certain section of the tunnel axis RMi The vertical coordinate of the curve is higher than the actual cover thickness of the rock mass C i The vertical coordinate value of the curve determines that the hydraulic tunnel does not meet the requirements of the Norwegian standard.

[0077] The beneficial effects of the application of the results of the embodiments of the present invention are as follows:

[0078] 1) Based on the three-dimensional model of the hydraulic tunnel axis and topography and geology, a Norwegian Criteria verification calculation is performed in a three-dimensional scenario to calculate the actual minimum cover thickness of the rock mass at any point on the tunnel axis. Compared with the traditional method of using two-dimensional sections to judge the Norwegian Criteria, there is no need for multiple sectioning, the calculation process is more efficient, the analysis scope is more comprehensive, and the calculation results are more accurate.

[0079] 2) A calculation and analysis method for the slope angle of terrain rock mass based on three-dimensional terrain is given. Compared with the traditional method of estimating the slope angle of rock mass based on two-dimensional terrain profile, the calculation results are more realistic.

[0080] 3) By developing corresponding software functions, the Norwegian standard determination can be realized at all locations along the entire hydraulic tunnel, and statistical curve analysis functions can be supported. This can effectively solve the problem that the traditional manual calculation mode can only select some control points for calculation, resulting in incomplete calculation results.

[0081] Example 2

[0082] Embodiment 2 of the present invention provides a terminal device corresponding to the above-mentioned embodiment 1. The terminal device can be a processing device for a client, such as a mobile phone, a laptop computer, a tablet computer, a desktop computer, etc., to execute the method of the above-mentioned embodiment.

[0083] The terminal device of this embodiment includes a memory, a processor, and a computer program stored in the memory; the processor executes the computer program in the memory to implement the steps of the method in the above-mentioned embodiment 1.

[0084] In some implementations, the memory may be a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.

[0085] In other implementations, the processor may be a central processing unit (CPU), a digital signal processor (DSP), or other general-purpose processors, which are not limited herein.

[0086] Example 3

[0087] Embodiment 3 of the present invention provides a computer-readable storage medium corresponding to the above-mentioned embodiment 1, on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the steps of the method of the above-mentioned embodiment 1 are implemented.

[0088] Computer readable storage media can be tangible devices that hold and store instructions used by instruction execution devices. Computer readable storage media can be, for example, but not limited to, electronic storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any combination thereof.

[0089] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiment of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal translation scripting language JavaScript, etc.

[0090] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0091] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0092] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0093] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A determination method applicable to the Norwegian criteria for hydraulic tunnels, characterized in that: The following steps are involved: S1. Create a three-dimensional model of the hydraulic tunnel axis and introduce a three-dimensional terrain surface model and a strongly weathered geological surface model; the three-dimensional terrain surface model is the terrain surface, and the strongly weathered geological surface model is the weathering surface; S2. Set the calculation step length ls, unit: m; set the starting point and end point on the hole axis to determine the calculation and analysis range of the Norwegian standard. The hole axis length between the starting point and the end point is L; set the calculation step length Lr of the spherical radius, unit: m; Set the rock slope angle calculation radius R α , calculate the height H of the cylindrical surface α , unit: m; S3. According to the length of the tunnel axis L and the calculation step length ls, calculate the number of control points Ns required for the Norwegian standard judgment as L / ls, round down, start from the starting point of the tunnel axis, traverse according to the calculation step length ls, let N = i, L i =i×ls, i=1,2,3…Ns, from the starting point to the end point of the hole axis, take the length L along the hole axis i Determine the i-th control point K i , the coordinates are (X i ,Y i ,Z i ); S4. Initialize j=1; S5. Set the spherical radius R j =j×Lr, with control point K i is the center of the sphere, R j Create a spherical surface for the radius and determine whether the spherical surface intersects with the weathering surface; If the result is non-intersection, the control point is taken as the center of the sphere, R j+1 Create a spherical surface for the radius and determine whether the spherical surface intersects with the weathering surface; If the result is intersection, the shortest distance C from the control point to the weathering surface is i =R j-1 +R j , extract the intersection curve S between the spherical surface and the weathering surface i , go to step S7; C i is the control point K i The corresponding actual rock cover thickness; S6, repeat step S5 until the result is determined to be intersection; S7, using the intersection curve S i Calculate the rock slope angle α corresponding to the i-th control point i ; S8. Calculate the i-th control point K using the Norwegian criterion formula i Corresponding minimum covering thickness C RMi ; C RM is the minimum cover thickness of the rock mass, in m; h s is the hydrostatic pressure head in the tunnel, in m; γ W is the density of water in N / mm 3 ; γ R is the density of the rock mass, in N / mm 3 ; α i is the surface rock slope angle corresponding to the i-th control point, α i When α>60°, i Take it as 60°; F is the empirical coefficient; S9, let N=i+1, L i+1 =(i+1)×ls, from the starting point to the end point of the hole axis, take the length L along the hole axis i+1 Determine the i+1th control point K i+1 Repeat steps S4 to S8 until N=Ns; S10. Analyze the Norwegian criteria determination results along the hydraulic tunnel in the form of statistical curves.

2. The determination method applicable to the Norwegian Criteria for hydraulic tunnels according to claim 1, characterized in that: The specific implementation process of step S5 includes: 1) Calculate the intersection curve S i The coordinate range [(X min ,X max ),(Y min ,Y max ),(Z min ,Z max )], set point Ts(X S ,Y S ,Z S ) is the curve S i For any point on X min ≤X s ≤X max , Y min ≤Y s ≤Y max , Z min ≤ WITH s ≤Z max ; 2) Let the calculation point T i The coordinates are Through the control point K i and calculation point T i Creating a Direction Vector 3) T i is the center of the circle, R α As the radius, create a circle on the normal plane of the direction vector kt, and stretch it along the direction of vector kt and its opposite direction to form a cylindrical surface. The unidirectional stretching height H α , determine whether the cylindrical surface and the terrain surface completely intersect; if the result is no intersection or incomplete intersection, continue to stretch H along the direction of vector kt and its opposite direction α The height of the cylinder surface is used to determine whether the cylinder surface and the terrain surface are completely intersected; this cycle is repeated until the result is that they are completely intersected; if the result is that they are completely intersected, the curve H where the terrain surface and the cylinder surface completely intersect is extracted. i ; 4) Calculate the curve H using the third-order unweighted difference method i The slope of all locations on the terrain within the range and the average slope value slp are calculated i , then the rock slope angle α i =atan(slp i ).

3. The determination method applicable to the Norwegian Criteria for hydraulic tunnels according to claim 1, characterized in that: Step S8 also includes: comparing the i-th control point K i The corresponding minimum rock cover thickness C RMi and the actual rock cover thickness C i ; If C i >C RMi , then the control point K i Meet the minimum cover thickness requirements determined by the Norwegian guidelines; If C i ≤C RMi , then the control point K i The minimum cover thickness requirement as determined by the Norwegian Guidelines is not met.

4. The determination method applicable to the Norwegian Criteria for hydraulic tunnels according to claim 1, characterized in that: The specific implementation process of step S10 includes: Take the control point K on the hole axis i The length of the tunnel line between the starting point of the tunnel axis is the horizontal coordinate, and the unit of the tunnel line length is m; the control point K on the tunnel axis i The corresponding minimum rock cover thickness C RMi and the actual rock cover thickness C i is the vertical axis, the minimum rock cover thickness C RMi and the actual rock cover thickness C i The unit is m; the minimum rock cover thickness C corresponding to each control point RMi and the actual rock cover thickness C i Connect the lines to generate statistical curves; If the minimum cover thickness of the rock mass is C RMi The vertical coordinate of any point on the curve is lower than the actual cover thickness of the rock mass C i The vertical coordinate value of the curve is used to determine that the hydraulic tunnel meets the requirements of the Norwegian standard. If there is a minimum rock mass cover thickness C at a certain section of the tunnel axis RMi The vertical coordinate of the curve is higher than the actual cover thickness of the rock mass C i The vertical coordinate value of the curve is not sufficient, so it is determined that the hydraulic tunnel in this section does not meet the requirements of the Norwegian standard.

5. A terminal device comprising a memory, a processor, and a computer program stored in the memory; characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 4.

6. A computer-readable storage medium having a computer program / instruction stored thereon; characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

7. A computer program product comprising a computer program / instructions; characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

Images