A method and system for determining rock breaking parameters for a full face tunnel boring machine

Abstract

The application provides a method and system for determining rock breaking parameters of a full-face tunneling machine, and belongs to the technical field of rock breaking parameter design of a full-face tunneling machine in tunnel engineering and mining engineering. The three-dimensional breaking pit shape of rock is obtained first, then the rock breaking mechanics analysis method and the rock breaking specific energy analysis method are used for step-by-step collaborative design, and the first total rock breaking power requirement and the second total rock breaking power requirement are obtained respectively, finally, through the obtained rock breaking parameter data set of the tunneling machine, the balance optimization of rock breaking efficiency and energy consumption is realized through the logical chain of single cutter stress, cutter disc integration and power requirement, and the performance of the rock full-face tunneling machine is improved.

Description

Technical Field

[0001] This invention relates to the field of rock breaking parameter design technology for full-face tunnel boring machines in tunnel engineering and mining engineering, and particularly to a method and system for determining rock breaking parameters for full-face tunnel boring machines. Background Technology

[0002] Rock engineering refers to engineering projects that construct or build specific rock spaces within natural geological rock masses using specific rock-breaking and excavation methods. The most representative examples are tunnel engineering and mining engineering. Currently, the drill-and-blast method is the most widely used rock-breaking method in rock engineering. Its main drawbacks include: discontinuous rock-breaking processes, significant damage to the surrounding rock after blasting, and the need for ventilation to handle toxic gases. Mechanical rock-breaking methods, represented by tunnel boring machines (TBMs) and continuous tunneling machines for potash mines, offer advantages such as high rock-breaking efficiency, continuous construction, and good flexibility, overcoming the disadvantages of the drill-and-blast method, and their application is becoming increasingly widespread. However, when TBMs are used to break hard rock, they suffer from low efficiency, accelerated cutter wear, high machine vibration and low reliability, and difficulty in determining optimal rock-breaking parameters.

[0003] Before designing a tunnel boring machine (TBM), it is necessary to incorporate the technological conditions of tunnel construction / mining production. These mainly include the tunnel / tunnel cross-sectional diameter, the expected tunneling speed (m / h), and the expected production capacity (m³ / h). 3 Parameters such as hydrogeology, engineering geology, environmental conditions, and rock mechanics are considered. Key parameters for mechanical design engineers to consider include: single-blade force analysis, total rock-breaking thrust of the cutterhead and power driving the cutterhead in the tunneling direction, total rock-breaking rotation torque of the cutterhead, power driving the cutterhead rotation, and considering safety, escape redundancy, and transmission efficiency losses, comprehensively calculating the total power of each power component for rock breaking in the tunnel boring machine. Existing rock-breaking parameter design methods rely heavily on empirical analogies, making it difficult to accurately design based on rock mass conditions. This often results in a mismatch between rock-breaking parameters and geological conditions, leading to slow tunneling speeds and significantly increased costs.

[0004] Therefore, the design, manufacturing, and engineering application of full-face rock tunnel boring machines (TBMs) encompass multiple stages, including preliminary process condition analysis, mechanical design, and optimization of engineering tunneling control parameters, resulting in a long design iteration cycle. Currently, the cutterhead design of TBMs is primarily the responsibility of machinery manufacturers, typically drawing upon foreign prototypes and existing design examples. However, due to the current incomplete rock mechanics theory for mechanical rock breaking, inaccurate effective rock-breaking mechanics input conditions, and a lack of quantitative design basis for cutter rock-breaking forces, the reliability of the TBM body is insufficient when facing complex geological conditions. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a method and system for determining rock-breaking parameters of a full-face tunnel boring machine (TBM). This invention combines rock-breaking force analysis and rock-breaking specific energy analysis, employing a step-by-step collaborative design of the two methods. Through a logical chain of single-blade force, cutterhead integration, and power demand, it achieves a balanced optimization of rock-breaking efficiency and energy consumption, thereby improving the performance of the full-face rock TBM. To achieve the above objectives, the technical solution is as follows: On one hand, the present invention provides a method for determining rock-breaking parameters of a full-face tunnel boring machine, the method comprising: S1. Based on the design scheme of the rock mass space engineering, the construction process conditions and rock mass process conditions are obtained; S2. Based on the construction process conditions and the rock mass process conditions, the three-dimensional fracture pit morphology of the rock is obtained; S3. Based on the three-dimensional fracture crater morphology of the rock, the first total rock-breaking power requirement is obtained through rock-breaking force analysis. S4. Based on the three-dimensional fracture pit morphology of the rock, the second total rock-breaking power requirement is obtained through the rock-breaking energy analysis method. S5. Based on the first total rock-breaking power requirement and the second total rock-breaking power requirement, the final total rock-breaking power requirement is obtained by comparison. S6. Based on the final total rock-breaking power requirement, the construction process conditions, and the rock mass process conditions, obtain the rock-breaking parameter dataset for the tunnel boring machine.

[0006] Optionally, in S3, based on the three-dimensional fracture crater morphology of the rock, the first total rock-breaking power requirement is obtained through rock-breaking force analysis, including: S31. Based on the three-dimensional fracture crater morphology of the rock, the stress analysis of a single cutting tool is performed to obtain the stress data of a single cutting tool. S32. Based on the three-dimensional fracture crater morphology of the rock and the stress data of the single cutting tool, obtain the total number of cutting tools and their arrangement. S33. Based on the total number and arrangement of the cutting tools, obtain the total thrust and total torque of the cutter head; S34. Based on the total thrust and total torque of the cutterhead, the total power requirement for the first rock breaking is obtained.

[0007] Optionally, in step S31, based on the three-dimensional fracture crater morphology of the rock, a stress analysis is performed on a single cutting tool to obtain the stress data of that single cutting tool, including: S311. Based on the three-dimensional fracture crater morphology of the rock, the normal pressure and tangential force required for rock breaking are obtained using the Colorado School of Mines model. S312. Based on the normal pressure and tangential force required for rock breaking, the corrected force for rock breaking under the total force is obtained through correction calculation. S313. Based on the normal pressure and tangential force required for rock breaking and the correction force of rock breaking under the total force, the force analysis of a single tool is performed to obtain the force data of a single tool.

[0008] Optionally, the correction calculation formula includes: (1) In the formula: This is the corrective force for rock breaking under the total force. The total force acting on the cutting tool. This is the geostress correction factor. This refers to the fracture toughness of the rock.

[0009] Optionally, in S4, based on the three-dimensional fracture crater morphology of the rock, the second total rock-breaking power requirement is obtained through rock-breaking specific energy analysis, including: S41. Based on the three-dimensional fracture pit morphology of the rock, the rock was cut multiple times under different normal forces using a single blade through experimental methods to obtain the complete curve of force change with displacement and the total volume of rock broken. S42. Based on the complete curve of the force changing with displacement, the mechanical work of breaking the rock is obtained by integral calculation; S43. Based on the mechanical work of the rock breaking and the total volume of the rock breaking, obtain the rock breaking specific energy; S44. Based on the rock-breaking energy ratio, the maximum rock-breaking force is obtained; S45. Based on the maximum rock-breaking force, the second total rock-breaking power requirement is obtained.

[0010] Optionally, the formula for calculating the rock-breaking specific energy includes: (2) In the formula: To test the rock-breaking specific energy under different rock-breaking methods, The mechanical work required for rock breaking under current rock-breaking methods. The total volume of the broken rock. It is either a normal force or a tangential force. The relative cumulative displacement under the action of normal or tangential force.

[0011] On the other hand, the present invention provides a system for determining rock-breaking parameters of a full-face tunnel boring machine, the system being applied to a method for determining rock-breaking parameters of a full-face tunnel boring machine, the system comprising: The process condition acquisition module is used to obtain the construction process conditions and rock mass process conditions based on the design scheme of the rock mass space engineering. The fracture pit morphology acquisition module is used to obtain the three-dimensional fracture pit morphology of the rock based on the construction process conditions and the rock mass process conditions. The first calculation module is used to obtain the first total rock breaking power requirement based on the three-dimensional fracture crater morphology of the rock through rock breaking force analysis. The second calculation module is used to obtain the second total power requirement for rock breaking based on the three-dimensional fracture pit morphology of the rock and the rock breaking energy analysis method. The power demand comparison module is used to obtain the final total rock-breaking power demand by comparing the first total rock-breaking power demand and the second total rock-breaking power demand. The rock breaking parameter dataset acquisition module is used to obtain the tunneling machine rock breaking parameter dataset based on the final total rock breaking power requirement, the construction process conditions, and the rock mass process conditions.

[0012] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects: The above scheme combines rock-breaking force analysis and rock-breaking specific energy analysis, and adopts the two methods in a step-by-step collaborative design. Through the logical chain of single-blade force, cutterhead integration, and power demand, it achieves a balanced optimization of rock-breaking efficiency and energy consumption, thereby improving the performance of the full-face rock tunneling machine. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a flowchart of an embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine according to the present invention; Figure 2 This is a flowchart illustrating the method for determining rock-breaking parameters of a full-face tunnel boring machine according to the present invention, which obtains the first total rock-breaking power requirement. Figure 3 This is a flowchart illustrating the force data of a single cutting tool obtained in an embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine according to the present invention. Figure 4 This is a flowchart illustrating the second total rock-breaking power requirement obtained in an embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine according to the present invention; Figure 5 This is a system block diagram of an embodiment of the present invention for determining rock-breaking parameters of a full-face tunnel boring machine. Detailed Implementation

[0015] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0016] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0017] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figure 1 The flowchart shown is an embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine according to the present invention. The present invention provides a method for determining rock-breaking parameters of a full-face tunnel boring machine, which is implemented by a system for determining rock-breaking parameters of a full-face tunnel boring machine. The method includes: S1. Based on the design scheme of the rock mass space engineering, the construction process conditions and rock mass process conditions are obtained; S2. Based on the construction process conditions and the rock mass process conditions, the three-dimensional fracture pit morphology of the rock is obtained; S3. Based on the three-dimensional fracture crater morphology of the rock, the first total rock-breaking power requirement is obtained through rock-breaking force analysis. Specifically, such as Figure 2 The flowchart shown in this embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine illustrates the process of obtaining the first total rock-breaking power requirement. In step S3, based on the three-dimensional fracture crater morphology of the rock, the first total rock-breaking power requirement is obtained through rock-breaking force analysis, including: S31. Based on the three-dimensional fracture crater morphology of the rock, the stress analysis of a single cutting tool is performed to obtain the stress data of a single cutting tool. Furthermore, such as Figure 3 The flowchart shown in this embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine illustrates the process of obtaining stress data for a single cutter. In step S31, stress analysis of a single cutter is performed based on the three-dimensional fracture crater morphology of the rock to obtain stress data for that single cutter, including: S311. Based on the three-dimensional fracture crater morphology of the rock, the normal pressure and tangential force required for rock breaking are obtained using the Colorado School of Mines model. Furthermore, the Colorado School of Mines (CSM) model, primarily used for mechanical analysis calculations of TBM cutterheads, is shown in formulas (3) to (7).

[0019] (3) (4) (5) (6) (7) In the formula, The total force acting on the cutting tool. It is a constant. The width of the blade tip. The uniaxial compressive strength of the rock. Indirect tensile strength of rock tested in Brazil S The distance between the blades. For the corner of the rock surface indentation, T For torque, R For the tool radius, For normal force, For tangential force, p For penetration, The angle of application of the force.

[0020] The derivation of formula (3) is mainly based on the statics framework, taking into account the three-dimensional geometric parameters of the cutter and the geometric parameters of the three-dimensional fracture pit formed after cutting the rock. It is assumed that the rock failure is subject to the Mohr-Coulomb strength criterion, and the magnitude of the single-blade cutting force is determined. Formula (3) is an empirical formula that takes into account tensile strength and empirical correction coefficients.

[0021] Practical experience with deep rock tunnel boring machines (TBMs) demonstrates that they require significantly more energy compared to shallow rock-breaking TBMs. True triaxial tests in the rock chamber show that rock strength increases under lateral force constraints. This suggests that in-situ stress in deep engineering affects TBM rock-breaking power; the deeper the burial, the greater the in-situ stress, and the higher the power consumption of the TBM.

[0022] Rock fracture toughness is rarely directly applied to the rock-breaking force design of tunnel boring machines (TBMs). Under external forces, mechanical rock-breaking tools create multiple configurations of crack surfaces within the rock, which interweave to form fractured rock blocks of varying sizes and potentially multi-cracked, high-damage zones. Besides the inherent differences in fracture toughness among different rocks, mechanical rock breaking methods also aim to induce as many internal cracks as possible to reduce breaking power and achieve better rock-breaking results. Therefore, the rock-breaking force model needs further refinement to adapt to the design requirements of full-face rock tunneling at different depths.

[0023] S312. Based on the normal pressure and tangential force required for rock breaking, the corrected force for rock breaking under the total force is obtained through correction calculation. Furthermore, the corrected calculation formula includes: (1) In the formula: This is the corrective force for rock breaking under the total force. The total force acting on the cutting tool. This is the geostress correction factor. This refers to the fracture toughness of the rock.

[0024] The geostress correction factor was obtained through a three-point bending test on rock. Based on the analysis of a large amount of statistical data and indoor true triaxial test results, a simple method for geostress correction coefficients was established, as shown in Table 1.

[0025] Table 1. Relationship between the burial depth of rock engineering and the geostress correction factor

[0026] S313. Based on the normal pressure and tangential force required for rock breaking and the correction force of rock breaking under the total force, the force analysis of a single tool is performed to obtain the force data of a single tool.

[0027] S32. Based on the three-dimensional fracture crater morphology of the rock and the stress data of the single cutting tool, obtain the total number of cutting tools and their arrangement. S33. Based on the total number and arrangement of the cutting tools, obtain the total thrust and total torque of the cutter head; Furthermore, after the single-blade force analysis is completed, the total cross-sectional area of ​​the rock mass to be excavated is determined according to the process, and the blade spacing and the total number of blades N are reasonably determined. The resultant force of the positive forces of all blades is the total thrust of the cutterhead. The sum of the products of the tangential forces of all blades and their respective moments is the total torque of the cutterhead.

[0028] Total thrust The calculation is shown in formula (8): (8) Total torque The calculation is shown in formula (9): (9) S34. Based on the total thrust and total torque of the cutterhead, the total power requirement for the first rock breaking is obtained.

[0029] S4. Based on the three-dimensional fracture pit morphology of the rock, the second total rock-breaking power requirement is obtained through the rock-breaking energy analysis method. Specifically, such as Figure 4 The flowchart shown in this embodiment of the method for determining rock-breaking parameters of a full-face tunnel boring machine illustrates the process of obtaining the second total rock-breaking power requirement. In step S4, based on the three-dimensional fracture crater morphology of the rock, the second total rock-breaking power requirement is obtained through rock-breaking specific energy analysis, including: S41. Based on the three-dimensional fracture pit morphology of the rock, the rock was cut multiple times under different normal forces using a single blade through experimental methods to obtain the complete curve of force change with displacement and the total volume of rock broken. S42. Based on the complete curve of the force changing with displacement, the mechanical work of breaking the rock is obtained by integral calculation; S43. Based on the mechanical work of the rock breaking and the total volume of the rock breaking, obtain the rock breaking specific energy; Furthermore, the formula for calculating the rock-breaking specific energy includes: (2) In the formula: To test the rock-breaking specific energy under different rock-breaking methods, The mechanical work required for rock breaking under current rock-breaking methods. The total volume of the broken rock. It is either a normal force or a tangential force. The relative cumulative displacement under the action of normal or tangential force.

[0030] S44. Based on the rock-breaking energy ratio, the maximum rock-breaking force is obtained; Furthermore, the depth of intrusion into the rock under different downforces When the depth equals the penetration depth, the calculated value is... This refers to the single-blade thrust of the tunneling machine when operating according to the tunneling process parameters. Because the rock-breaking energy method is used, the rock-breaking energy is composed of both frictional energy and fracture energy, and to a certain extent includes the rock fracture toughness. The effect on rock-breaking force. The calculation method and sum The method of obtaining the value is the same.

[0031] (10)

[0032] In the formula: The depth of penetration into the rock under different downforces.

[0033] S45. Based on the maximum rock-breaking force, the second total rock-breaking power requirement is obtained.

[0034] S5. Based on the first total rock-breaking power requirement and the second total rock-breaking power requirement, the final total rock-breaking power requirement is obtained by comparison. S6. Based on the final total rock-breaking power requirement, the construction process conditions, and the rock mass process conditions, obtain the rock-breaking parameter dataset for the tunnel boring machine.

[0035] Example 2: This embodiment 2 designs the TBM cutterhead thrust and torque, as well as the tunneling rock-breaking parameters.

[0036] Table 2 summarizes the known rock engineering and rock mechanics process parameters.

[0037] Table 2. Rock Engineering and Rock Mechanics Process Parameters

[0038] Table 3 summarizes the known process parameters of the cutter head and cutting tools.

[0039] Table 3. Process parameters of cutter head and cutting tool

[0040] The process of calculating the total power requirement for the first rock breaking step using the rock breaking force analysis method.

[0041] Calculate the wrap angle of the rock surface indentation based on the tool parameters and penetration depth:

[0042] Calculate the total force of a single blade:

[0043]

[0044]

[0045] Correction force for calculating the total force of a single blade:

[0046] =290.1kN

[0047]

[0048] Calculate the total thrust of the cutterhead:

[0049] Calculate the total torque of the cutter head:

[0050] Calculate the total power:

[0051]

[0052] The process of calculating the total power requirement for the second rock breaking stage using the rock breaking energy analysis method.

[0053] The LCM test data are shown in Table 4. Using the same rock and cutting tools, the rock penetration was gradually increased to obtain the single-blade thrust and rolling force, while simultaneously testing the rock breaking specific energy data. The rock breaking effect was best when the penetration was 5 mm; therefore, this measured parameter was used in subsequent calculations.

[0054] Table 4 LCM rock-breaking test data

[0055] The parameter used in the relevant calculations is F. N =260 kN, F R =20 kN, =103.32 MJ / m 3 ; Total thrust ; Total torque calculation: =1628.7 kNm Total power calculation:

[0056] Based on the above examples and calculations, the total rock-breaking power of a TBM with a tunneling diameter of 5.03 meters, obtained by the rock-breaking force analysis method and the rock-breaking energy analysis method, is 1427kW and 1371kW, respectively. The first total rock-breaking power requirement calculated by the rock-breaking force analysis method is higher, so it is selected as the final total rock-breaking power requirement and used as the basis for calculating the rock-breaking parameter dataset of the TBM rock-breaking tunneling machine.

[0057] like Figure 5 The diagram shown is a system block diagram of an embodiment of the present invention for determining rock-breaking parameters of a full-face tunnel boring machine. The present invention provides a system for determining rock-breaking parameters of a full-face tunnel boring machine, which is applied to a method for determining rock-breaking parameters of a full-face tunnel boring machine. The system includes: a process condition acquisition module, a crater morphology acquisition module, a first calculation module, a second calculation module, a power demand comparison module, and a rock-breaking parameter dataset acquisition module. Specifically, The process condition acquisition module is used to obtain the construction process conditions and rock mass process conditions based on the design scheme of the rock mass space engineering. The fracture pit morphology acquisition module is used to obtain the three-dimensional fracture pit morphology of the rock based on the construction process conditions and the rock mass process conditions. The first calculation module is used to obtain the first total rock breaking power requirement based on the three-dimensional fracture crater morphology of the rock through rock breaking force analysis. The second calculation module is used to obtain the second total power requirement for rock breaking based on the three-dimensional fracture pit morphology of the rock and the rock breaking energy analysis method. The power demand comparison module is used to obtain the final total rock-breaking power demand by comparing the first total rock-breaking power demand and the second total rock-breaking power demand. The rock breaking parameter dataset acquisition module is used to obtain the tunneling machine rock breaking parameter dataset based on the final total rock breaking power requirement, the construction process conditions, and the rock mass process conditions.

[0058] This invention provides a method and system for determining rock-breaking parameters of a full-face tunnel boring machine (TBM). The invention first obtains the three-dimensional morphology of the rock fracture pit. Then, through rock-breaking force analysis and rock-breaking specific energy analysis, it employs two methods in a step-by-step collaborative design to obtain the first and second total rock-breaking power requirements. Finally, by obtaining the TBM rock-breaking parameter dataset, and through a logical chain of single-blade force, cutterhead integration, and power requirements, it achieves a balanced optimization of rock-breaking efficiency and energy consumption, thereby improving the performance of the full-face rock TBM.

[0059] It is understood that the present invention has been described through the above embodiments and should not be construed as limiting the implementation and scope of the present invention. Those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A method for determining rock-breaking parameters of a full-face tunnel boring machine, characterized in that, The method includes: S1. Based on the design scheme of the rock mass space engineering, the construction process conditions and rock mass process conditions are obtained; S2. Based on the construction process conditions and the rock mass process conditions, the three-dimensional fracture pit morphology of the rock is obtained; S3. Based on the three-dimensional fracture crater morphology of the rock, the first total rock-breaking power requirement is obtained through rock-breaking force analysis, including: S31. Based on the three-dimensional fracture pit morphology of the rock, perform force analysis on a single cutting tool to obtain the force data of a single cutting tool. S32. Based on the three-dimensional fracture pit morphology of the rock and the force data of the individual cutting tool, obtain the total number of cutting tools and their arrangement. S33. Based on the total number and arrangement of the cutting tools, the total thrust and total torque of the cutter head are obtained; S34. Based on the total thrust and total torque of the cutterhead, obtain the first total power requirement for rock breaking; S4. Based on the three-dimensional fracture crater morphology of the rock, the second total rock-breaking power requirement is obtained through rock-breaking specific energy analysis, including: S41. Based on the three-dimensional fracture pit morphology of the rock, the rock was cut multiple times under different normal forces using a single blade through an experimental method to obtain a complete curve of force change with displacement and the total volume of rock broken. S42. Based on the complete curve of force versus displacement, the mechanical work of rock breaking is obtained by integral calculation; S43. Based on the mechanical work of rock breaking and the total volume of rock breaking, the rock breaking specific energy is obtained; S44. Based on the rock-breaking energy ratio, the maximum rock-breaking force is obtained; S45. Based on the maximum rock-breaking force, obtain the second total rock-breaking power requirement; S5. Based on the first total rock-breaking power requirement and the second total rock-breaking power requirement, the final total rock-breaking power requirement is obtained by comparison. S6. Based on the final total rock-breaking power requirement, the construction process conditions, and the rock mass process conditions, obtain the rock-breaking parameter dataset for the tunnel boring machine.

2. The method for determining rock-breaking parameters of a full-face tunnel boring machine according to claim 1, characterized in that, In step S31, based on the three-dimensional fracture crater morphology of the rock, a stress analysis is performed on a single cutting tool to obtain stress data for that single cutting tool, including: S311. Based on the three-dimensional fracture crater morphology of the rock, the normal pressure and tangential force required for rock breaking are obtained using the Colorado School of Mines model. S312. Based on the normal pressure and tangential force required for rock breaking, the corrected force for rock breaking under the total force is obtained through correction calculation. S313. Based on the normal pressure and tangential force required for rock breaking and the correction force of rock breaking under the total force, perform force analysis on a single tool to obtain the force data of a single tool.

3. The method for determining rock-breaking parameters of a full-face tunnel boring machine according to claim 2, characterized in that, The corrected calculation formula includes: (1) In the formula: This is the corrective force for rock breaking under the total force. The total force acting on the cutting tool. This is the geostress correction factor. This refers to the fracture toughness of the rock.

4. The method for determining rock-breaking parameters of a full-face tunnel boring machine according to claim 1, characterized in that, The formula for calculating the rock-breaking specific energy includes: (2) In the formula: To test the rock-breaking specific energy under different rock-breaking methods, The mechanical work required for rock breaking under current rock-breaking methods. The total volume of the broken rock. It is either a normal force or a tangential force. The relative cumulative displacement under the action of normal or tangential force.

5. A system for determining rock-breaking parameters of a full-face tunnel boring machine, used to implement the method for determining rock-breaking parameters of a full-face tunnel boring machine as described in any one of claims 1-4, characterized in that, The system includes: The process condition acquisition module is used to obtain the construction process conditions and rock mass process conditions based on the design scheme of the rock mass space engineering. The fracture pit morphology acquisition module is used to obtain the three-dimensional fracture pit morphology of the rock based on the construction process conditions and the rock mass process conditions. The first calculation module is used to obtain the first total rock-breaking power requirement based on the three-dimensional fracture pit morphology of the rock through rock-breaking force analysis. The second calculation module is used to obtain the second total rock breaking power requirement based on the three-dimensional fracture pit morphology of the rock and the rock breaking energy analysis method. The power demand comparison module is used to obtain the final total rock-breaking power demand by comparing the first total rock-breaking power demand and the second total rock-breaking power demand. The rock breaking parameter dataset acquisition module is used to obtain the tunneling machine rock breaking parameter dataset based on the final total rock breaking power requirement, the construction process conditions, and the rock mass process conditions.

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