Method and device for measuring rock cuttable property and heading machine

Abstract

The invention provides a method and device for measuring the cuttable property of rock and a tunneling machine, and relates to the technical field of rock tunneling, and the method comprises the following steps: obtaining the invasion force and the invasion depth of the rock to be measured; obtaining a rock invasion change curve according to the invasion force and the invasion depth; and calculating according to the rock invasion change curve to obtain cutting force and cutting specific energy consumption, and determining the cuttable property of the rock to be tested according to the cutting force and the cutting specific energy consumption. According to the method, more accurate rock strength parameters can be obtained by measuring the invasion force and the invasion depth of the rock, meanwhile, the cutting force and the cutting specific energy consumption are directly predicted based on the rock strength parameters through an established mathematical model and an empirical formula, the influence of personal errors and experimental conditions is reduced to a certain extent, and the method is suitable for large-scale popularization and application. Therefore, the test speed is improved. By accurately calculating the two parameters of the cutting force and the cutting specific energy consumption, the cutting performance of the rock can be more accurately tested, and the test accuracy is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of rock excavation, and in particular to a method and device for determining rock cuttability, and a tunneling machine. Background Art

[0002] With the rapid development of mechanical mining, tunnel boring machines have become the main equipment for rock tunnel excavation. The working environment of rock tunnel excavation is complex, with many interference factors and random changes in rock hardness. In the face of rocks of different hardness, tunnel boring machines need to adjust excavation parameters in time to ensure efficient and safe excavation operations. Therefore, it is particularly important to quickly determine the cuttability of rocks and formulate corresponding excavation plans.

[0003] At present, rock strength parameters are usually used to judge the cuttability of rocks. Rock strength parameters are essential parameters in mining and civil engineering construction, and are of great significance for evaluating the stability and bearing capacity of rock masses. Rock strength mainly includes compressive strength, tensile strength and shear strength. The test methods for these strengths are to collect certain samples, process them into the required sample size, and then test them according to standard procedures. This method takes too long from sample collection, processing, testing and data collation, and is not suitable for scenarios where it is necessary to quickly understand the cuttability of rocks on site. Therefore, the existing testing methods have the problem of being unable to quickly test the cuttability of rocks. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method, device and tunnel boring machine for determining the cuttability of rocks, which effectively solve the problem that the existing testing methods cannot quickly test the cuttability of rocks.

[0005] In a first aspect, the present invention provides a method for determining the cuttability of a rock, the method comprising:

[0006] Obtain the intrusion force and intrusion depth of the rock to be tested;

[0007] Obtaining a rock intrusion variation curve according to the intrusion force and the intrusion depth;

[0008] Calculate the cutting force and cutting specific energy consumption according to the rock intrusion change curve;

[0009] The cuttability of the rock to be tested is determined according to the cutting force and the cutting specific energy consumption.

[0010] Furthermore, the cutting force and cutting specific energy consumption are calculated according to the rock intrusion change curve, including:

[0011] Performing data fitting according to the rock intrusion variation curve to obtain a fitting curve slope;

[0012] Calculating and obtaining the tensile strength of the rock to be tested according to the slope of the fitting curve;

[0013] The cutting force and the cutting specific energy consumption are calculated based on the tensile strength and the cutting thickness of the rock to be tested.

[0014] Furthermore, the tensile strength calculation formula of the rock to be tested is:

[0015]

[0016] In the above formula, σ t represents the tensile strength of the rock to be tested, k represents the slope of the fitting curve, a 1 、a 2 and a 3 They respectively represent a first tensile strength coefficient, a second tensile strength coefficient and a third tensile strength coefficient, wherein the first tensile strength coefficient, the second tensile strength coefficient and the third tensile strength coefficient are obtained by performing data regression analysis based on the compressive strength and tensile strength of different rocks.

[0017] Furthermore, the calculation formula of the cutting force is:

[0018] FC=(b 1 σ t +b 2 )d

[0019] In the above formula, FC represents the cutting force, d represents the cutting thickness, and b 1 and b 2 They represent the first cutting force coefficient and the second cutting force coefficient respectively, wherein the first cutting force coefficient and the second cutting force coefficient are obtained by performing data regression analysis based on cutting parameters and tensile strength of different rocks.

[0020] Furthermore, the calculation formula of the cutting specific energy consumption is:

[0021] SE opt =c 1 σ t +c 2

[0022] In the above formula, SE opt represents the specific energy consumption of cutting, c 1 and c 2 They respectively represent a first cutting ratio energy consumption coefficient and a second cutting ratio energy consumption coefficient, wherein the first cutting ratio energy consumption coefficient and the second cutting ratio energy consumption coefficient are obtained by performing data regression analysis according to cutting parameters and tensile strength of different rocks.

[0023] In a second aspect, the present invention provides a system for determining rock cuttability, the system comprising:

[0024] A data acquisition module is used to obtain the intrusion force and intrusion depth of the rock to be tested;

[0025] A curve generating module, used for obtaining a rock intrusion variation curve according to the intrusion force and the intrusion depth;

[0026] A parameter calculation module, used for calculating the cutting force and cutting specific energy consumption according to the rock intrusion change curve;

[0027] The test determination module is used to determine the cuttability of the rock to be tested according to the cutting force and the cutting specific energy consumption.

[0028] In a third aspect, the present invention provides a test device for determining the cuttability of rock, the test device being installed on a cutting component of a tunnel boring machine, the test device being used to measure the intrusion force and intrusion depth of the rock to be tested, the test device comprising: a telescopic inner cylinder, a telescopic outer cylinder, a telescopic cylinder seat, an intrusion test cone, an elastic component, a telescopic displacement sensor, a pressure sensor and a base, wherein:

[0029] One end of the base is mounted on the cutting component of the tunnel boring machine, the telescopic cylinder seat is fixed to the other end of the base, one end of the telescopic outer cylinder is connected to the telescopic cylinder seat, and the telescopic inner cylinder is connected to the other end of the telescopic outer cylinder;

[0030] The intrusion test cone is arranged inside the telescopic inner cylinder, and the intrusion test cone is fixedly connected to the other end of the base. The telescopic displacement sensor is arranged between the telescopic inner cylinder and the telescopic cylinder seat, and the telescopic displacement sensor is used to measure the intrusion depth of the rock to be tested. The pressure sensor is arranged on the telescopic cylinder seat, and the telescopic inner cylinder is connected to the pressure sensor through the elastic component, and the pressure sensor is used to measure the intrusion force of the rock to be tested.

[0031] In a fourth aspect, the present invention provides a roadheader, comprising a testing device for determining the cuttability of rocks as described in the third aspect of the present invention.

[0032] In a fifth aspect, the present invention provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining rock cuttability as described in the first aspect of the present invention.

[0033] In a sixth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method for determining rock cuttability as described in the first aspect of the present invention.

[0034] The method, device and tunnel boring machine for determining the cuttability of rocks provided by the present invention can obtain more accurate rock strength parameters by measuring the intrusion force and intrusion depth of rocks. At the same time, through the established mathematical model and empirical formula, the cutting force and cutting specific energy consumption are directly predicted based on the rock strength parameters, which can reduce the influence of human errors and experimental conditions to a certain extent, thereby improving the speed of the test. The cutting force and cutting specific energy consumption are direct indicators of the cuttability of rocks. By accurately calculating these two parameters, the cuttability of rocks can be tested more accurately, effectively improving the accuracy of the test. The test device can be quickly installed on the tunnel boring machine, and the existing actions of the tunnel boring machine can be used to quickly detect the cuttability of rocks, which is of great significance to the design, construction and efficiency improvement of rock engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a first schematic diagram of the process of the method for determining rock cuttability provided by an embodiment of the present invention;

[0037] Figure 2 is a schematic diagram of a rock intrusion variation curve in an embodiment of the present invention;

[0038] Figure 3 is a second schematic diagram of the method flow for determining rock cuttability provided by an embodiment of the present invention;

[0039] Figure 4 is a schematic diagram of the structure of a system for determining rock cuttability provided by an embodiment of the present invention;

[0040] Figure 5 1 is a schematic diagram of the structure of a testing device for determining rock cuttability provided by an embodiment of the present invention;

[0041] Figure 6 is a schematic structural diagram of a tunnel boring machine provided by an embodiment of the present invention;

[0042] Figure 7 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0043] Description of main component symbols:

[0044] 100. Test device for determining the cuttability of rock; 110. Telescopic inner cylinder; 120. Telescopic outer cylinder; 130. Telescopic cylinder seat; 140. Intrusion test cone; 150. Elastic component; 160. Telescopic displacement sensor; 170. Pressure sensor; 180. Base; 200. Tunnel boring machine; 400. System for determining the cuttability of rock; 410. Data acquisition module; 420. Curve generation module; 430. Parameter calculation module; 440. Test determination module; 700. Electronic device; 710. Processor; 720. Communication interface; 730. Memory; 740. Communication bus. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that 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 work are within the scope of protection of the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] At present, rock strength parameters are usually used to judge the cuttability of rocks. Rock strength parameters are essential parameters in mining and civil engineering construction, and are of great significance for evaluating the stability and bearing capacity of rock masses. Rock strength mainly includes compressive strength, tensile strength and shear strength. The test methods for these strengths are to collect certain samples, process them into the required sample size, and then test them according to standard procedures. This method takes too long from sample collection, processing, testing and data collation, and is not suitable for scenarios where it is necessary to quickly understand the cuttability of rocks on site. Therefore, the existing testing methods have the problem of being unable to quickly test the cuttability of rocks.

[0049] Example 1

[0050] The embodiment of the present invention provides a method for measuring the cuttability of rock, which effectively solves the problem that the existing testing method cannot quickly test the cuttability of rock. Figure 1 FIG. 1 is a first schematic diagram of a method for determining rock cuttability provided by an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0051] S100: Obtain the intrusion force and intrusion depth of the rock to be tested.

[0052] In an embodiment of the present invention, a relevant testing device is used to measure the intrusion force and intrusion depth of the rock to be tested, and the corresponding intrusion force values ​​at different intrusion depths are obtained, wherein the intrusion force is the external force required to cause the rock to be tested to be invaded or destroyed, and the intrusion depth is the depth to which the rock is invaded or destroyed under the action of the external force.

[0053] S200. Obtain a rock intrusion variation curve according to the intrusion force and the intrusion depth.

[0054] In the embodiment of the present invention, the invasion depth is used as the abscissa and the invasion force is used as the ordinate, and a rock invasion variation curve is drawn using a drawing tool. Figure 2 Schematic diagram of rock intrusion variation curve in the embodiment of the present invention. Figure 2 As shown, during the intrusion process, the rock to be tested may be accompanied by rock collapse, thus forming rock debris. Therefore, the rock intrusion change curve rises in a wave shape, and each fluctuation of the intrusion force represents a rock collapse.

[0055] S300, calculating and obtaining the cutting force and cutting specific energy consumption according to the rock intrusion variation curve.

[0056] Figure 3 FIG. 2 is a second schematic diagram of the method for determining rock cuttability provided by an embodiment of the present invention. Figure 3 As shown, the calculation steps of cutting force and cutting specific energy consumption are as follows:

[0057] S310, performing data fitting according to the rock intrusion variation curve to obtain the slope of the fitting curve.

[0058] like Figure 2 As shown, according to the rock intrusion change curve, the lower line point D of the intrusion force F can be obtained. 1 , D 2 …coordinates of the coordinate points, fit these coordinate points into a straight line passing through the origin, and then obtain the slope k of the fitting curve through data fitting.

[0059] S320. Calculate the tensile strength of the rock to be tested according to the slope of the fitting curve.

[0060] In the embodiment of the present invention, the tensile strength calculation formula of the rock to be tested is:

[0061]

[0062] In the above formula, σ t represents the tensile strength of the rock to be tested, k represents the slope of the fitting curve, a 1 、a 2 and a 3 They respectively represent the first tensile strength coefficient, the second tensile strength coefficient and the third tensile strength coefficient, wherein the first tensile strength coefficient, the second tensile strength coefficient and the third tensile strength coefficient are obtained by data regression analysis according to the compressive strength and tensile strength of different rocks.

[0063] The first tensile strength coefficient, the second tensile strength coefficient and the third tensile strength coefficient can be obtained by the following steps:

[0064] First, select a variety of different types of rocks, and obtain the rock intrusion change curve of each rock according to steps S100-S200, and then obtain the corresponding fitting curve slope according to the rock intrusion change curve of each rock. Then, test the compressive strength and tensile strength of each rock through the standard test process of rock compressive strength and the standard test process of tensile strength. The slope of the fitting curve, the compressive strength and the tensile strength of each rock are subjected to data regression analysis using the least squares method, and the relationship between the slope of the fitting curve and the compressive strength and tensile strength is obtained as follows:

[0065] k=xσ c σ t +y (2)

[0066] In the above formula, k represents the slope of the fitting curve, σ t represents the tensile strength, σ c represents tensile strength, x and y represent constants, which are obtained by data regression analysis.

[0067] Then, according to the compressive strength and tensile strength of each rock, data regression analysis is also performed to obtain the relationship between compressive strength and tensile strength as follows:

[0068] σ c = zσ t -v (3)

[0069] In the above formula, z and v represent constants obtained through data regression analysis.

[0070] Combining formula (2) and formula (3), we can get formula (1), and according to constants x, y, z, v, we can calculate the first tensile strength coefficient a 1 , the second tensile strength coefficient a 2 and the third tensile strength coefficient a3 The coefficient value of .

[0071] Optionally, after the data is obtained from the rock intrusion test using a cone head with a cone angle of 80° and a data regression analysis is performed, the relationship between the slope of the fitting curve and the compressive strength and tensile strength is as follows:

[0072] k=0.0005σ c σ t +0.6 (4)

[0073] The relationship between compressive strength and tensile strength is as follows:

[0074] σ c =17.588σ t -20.923 (5)

[0075] The tensile strength calculation formula is:

[0076]

[0077] S330, calculating the cutting force and the cutting specific energy consumption according to the tensile strength and the cutting thickness of the rock to be tested.

[0078] In the embodiment of the present invention, the calculation formula of the cutting force is:

[0079] FC=(b 1 σ t +b 2 )d (7)

[0080] In the above formula, FC represents the cutting force, d represents the cutting thickness, and b 1 and b 2 They represent the first cutting force coefficient and the second cutting force coefficient respectively, wherein the first cutting force coefficient and the second cutting force coefficient are obtained by performing data regression analysis according to cutting parameters and tensile strength of different rocks.

[0081] The calculation formula of cutting specific energy consumption is:

[0082] SE opt =c 1 σ t +c 2 (8)

[0083] In the above formula, SE opt represents the specific energy consumption of cutting, c 1 and c 2 They respectively represent the first cutting ratio energy consumption coefficient and the second cutting ratio energy consumption coefficient, wherein the first cutting ratio energy consumption coefficient and the second cutting ratio energy consumption coefficient are obtained by performing data regression analysis according to cutting parameters and tensile strength of different rocks.

[0084] Optionally, a cone head with a cone angle of 80° is used to conduct an intrusion test on each rock to obtain data such as cutting parameters and tensile strength, and then a data regression analysis is performed to obtain the calculation formula for the cutting force:

[0085] FC=(12.625σ t +8.78)d (9)

[0086] The calculation formula of cutting specific energy consumption is:

[0087] SE opt =1.259σ t +0.142 (10)

[0088] S400: Determine the cuttability of the rock to be tested according to the cutting force and the cutting specific energy consumption.

[0089] The cuttability of rock usually refers to the ease with which the rock is broken by the cutting teeth under specific cutting conditions. Cutting force and cutting specific energy consumption are two key parameters for evaluating rock cuttability. Generally speaking, the smaller the cutting force, the easier it is for the rock to be broken by the cutting teeth, and the better the cuttability of the rock. At the same time, the smaller the cutting specific energy consumption, the higher the cutting efficiency, and the better the cuttability of the rock.

[0090] The method for determining rock cuttability provided by the embodiment of the present invention can obtain more accurate rock strength parameters by measuring the intrusion force and intrusion depth of the rock. At the same time, the cutting force and cutting specific energy consumption are directly predicted based on the rock strength parameters through the established mathematical model and empirical formula, which reduces the influence of human errors and experimental conditions to a certain extent, thereby improving the test speed. The cutting force and cutting specific energy consumption are direct indicators of rock cuttability. By accurately calculating these two parameters, the rock cuttability can be tested more accurately, effectively improving the accuracy of the test.

[0091] Example 2

[0092] Based on the same technical concept as the method embodiment of the above embodiment 1, the embodiment of the present invention provides a system for determining the cuttability of rocks. Figure 4 FIG. 1 is a schematic diagram of a system structure for determining rock cuttability provided by an embodiment of the present invention. Figure 4 As shown, the system 400 for determining rock cuttability includes:

[0093] The data acquisition module 410 is used to obtain the intrusion force and intrusion depth of the rock to be tested;

[0094] A curve generating module 420 is used to obtain a rock intrusion variation curve according to the intrusion force and the intrusion depth;

[0095] A parameter calculation module 430 is used to calculate the cutting force and the cutting specific energy consumption according to the rock intrusion change curve;

[0096] The test determination module 440 is used to determine the cuttability of the rock to be tested according to the cutting force and the cutting specific energy consumption.

[0097] It can be understood that the implementation method of the method for determining the cuttability of rocks provided in the above-mentioned embodiment 1 is also applicable to this embodiment and can achieve the same technical effect, so it will not be described again here.

[0098] Example 3

[0099] An embodiment of the present invention provides a testing device for determining the cuttability of rock. The testing device is installed on a cutting component of a tunnel boring machine and can be used to measure the intrusion force and intrusion depth of the rock to be tested in the above-mentioned embodiments 1 and 2. Figure 5 FIG. 1 is a schematic diagram of the structure of a rock cuttability testing device provided by an embodiment of the present invention. Figure 5 As shown, the test device 100 for determining rock cuttability comprises: a telescopic inner cylinder 110, a telescopic outer cylinder 120, a telescopic cylinder seat 130, an intrusion test cone 140, an elastic component 150, a telescopic displacement sensor 160, a pressure sensor 170 and a base 180, wherein:

[0100] One end of the base 180 is mounted on the cutting component of the tunnel boring machine, the telescopic cylinder seat 130 is fixed on the other end of the base 180, one end of the telescopic outer cylinder 120 is connected to the telescopic cylinder seat 130, and the telescopic inner cylinder 110 is connected to the other end of the telescopic outer cylinder 120. The intrusion test cone 140 is arranged inside the telescopic inner cylinder 110, and the intrusion test cone 140 is fixedly connected to the other end of the base 180. The telescopic displacement sensor 160 is arranged between the telescopic inner cylinder 110 and the telescopic cylinder seat 130, and the telescopic displacement sensor 160 is used to measure the intrusion depth of the rock to be tested. The pressure sensor 170 is arranged on the telescopic cylinder seat 130, and the telescopic inner cylinder 110 is connected to the pressure sensor 170 through the elastic component 150, and the pressure sensor 170 is used to measure the intrusion force of the rock to be tested.

[0101] The test device for determining the cuttability of rocks provided in the embodiment of the present invention can be quickly installed on a tunnel boring machine, and the existing actions of the tunnel boring machine can be used to quickly detect the cuttability of rocks, which is of great significance for the design, construction and efficiency improvement of rock engineering.

[0102] Example 4

[0103] Based on the same technical concept, an embodiment of the present invention further provides a tunnel boring machine. Figure 6 is a schematic diagram of the structure of a tunnel boring machine provided by an embodiment of the present invention, such as Figure 6As shown, the tunnel boring machine 200 includes the test device 100 for determining the rock cuttability in the above-mentioned embodiment 3. The test device 100 for determining the rock cuttability is fixed using the connection hole on the cutting head of the tunnel boring machine 200 or the special test device connection hole. At the same time, the compression-telescopic displacement sensor 160 and the pressure sensor 170 are connected to the system 400 for determining the rock cuttability.

[0104] The tunnel boring machine can use the telescopic cylinder to push the telescopic arm to drive the test device 100 for determining the cuttability of the rock to perform a rock intrusion action. After the telescopic inner cylinder 110 contacts the rock wall, the elastic component 150 is compressed. At the same time, as the test device 100 for determining the cuttability of the rock is advanced, the intrusion test cone 140 intrudes into the rock. At this time, the pressure sensor 170 tests the intrusion force of the intrusion test cone 140. At the same time, the telescopic inner cylinder 110 compresses the telescopic displacement sensor 160 to test the intrusion depth of the intrusion test cone 140, thereby measuring the intrusion force and intrusion depth of the rock to be tested and transmitting them to the system 400 for determining the cuttability of the rock.

[0105] The tunnel boring machine provided by the embodiment of the present invention can quickly detect the cuttability of rocks during the tunneling process, which is of great significance to the design, construction and efficiency improvement of rock engineering.

[0106] Example 5

[0107] Based on the same concept, an embodiment of the present invention further provides an electronic device, Figure 7 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention, such as Figure 7 As shown, the electronic device 700 may include: a processor 710, a communications interface 720, a memory 730 and a communication bus 740, wherein the processor 710, the communications interface 720 and the memory 730 communicate with each other via the communication bus 740. The processor 710 may call the logic instructions in the memory 730 to execute the steps of the method for determining the rock cuttability as described in the above embodiments. For example, it includes:

[0108] S100, obtaining the intrusion force and intrusion depth of the rock to be tested;

[0109] S200, obtaining a rock intrusion variation curve according to the intrusion force and the intrusion depth;

[0110] S300, calculating and obtaining the cutting force and cutting specific energy consumption according to the rock intrusion variation curve;

[0111] S400: Determine the cuttability of the rock to be tested according to the cutting force and the cutting specific energy consumption.

[0112] The processor 710 may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0113] In addition, the logic instructions in the above-mentioned memory 730 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0114] The memory 730 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required by at least one function; the data storage area may store data created by the processor, etc. In addition, the memory 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 embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor 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.

[0115] Example 6

[0116] Based on the same concept, an embodiment of the present invention further provides a computer-readable storage medium, which stores a computer program, and the computer program includes at least one code segment, which can be executed by a main control device to control the main control device to implement the steps of the method for determining rock cuttability as described in the above embodiments. For example, it includes:

[0117] S100, obtaining the intrusion force and intrusion depth of the rock to be tested;

[0118] S200, obtaining a rock intrusion variation curve according to the intrusion force and the intrusion depth;

[0119] S300, calculating and obtaining the cutting force and cutting specific energy consumption according to the rock intrusion variation curve;

[0120] S400: Determine the cuttability of the rock to be tested according to the cutting force and the cutting specific energy consumption.

[0121] Based on the same technical concept, an embodiment of the present invention further provides a computer program, which is used to implement the above method embodiment when executed by a main control device.

[0122] The computer program may be stored in whole or in part on a computer-readable storage medium packaged with the processor, or may be stored in whole or in part on a memory not packaged with the processor.

[0123] Based on the same technical concept, an embodiment of the present invention further provides a processor, which is used to implement the above method embodiment. The above processor can be a chip.

[0124] In summary, the method, device and tunnel boring machine for determining the cuttability of rocks provided by the present invention can obtain more accurate rock strength parameters by measuring the intrusion force and intrusion depth of rocks. At the same time, through the established mathematical model and empirical formula, the cutting force and cutting specific energy consumption are directly predicted based on the rock strength parameters, which can reduce the influence of human errors and experimental conditions to a certain extent, thereby improving the speed of the test. The cutting force and cutting specific energy consumption are direct indicators of the cuttability of rocks. By accurately calculating these two parameters, the cuttability of rocks can be tested more accurately, effectively improving the accuracy of the test. The test device can be quickly installed on the tunnel boring machine, and the existing actions of the tunnel boring machine can be used to quickly detect the cuttability of rocks, which is of great significance to the design, construction and efficiency improvement of rock engineering.

[0125] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0126] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining the cuttability of rock, characterized in that: The method comprises: Obtain the intrusion force and intrusion depth of the rock to be tested; Obtaining a rock intrusion variation curve according to the intrusion force and the intrusion depth; Calculate the cutting force and cutting specific energy consumption according to the rock intrusion change curve; The cuttability of the rock to be tested is determined according to the cutting force and the cutting specific energy consumption.

2. The method for determining rock cuttability according to claim 1, characterized in that: The method of calculating the cutting force and the cutting specific energy consumption according to the rock intrusion change curve includes: Performing data fitting according to the rock intrusion variation curve to obtain a fitting curve slope; Calculating and obtaining the tensile strength of the rock to be tested according to the slope of the fitting curve; The cutting force and the cutting specific energy consumption are calculated based on the tensile strength and the cutting thickness of the rock to be tested.

3. The method for determining rock cuttability according to claim 2, characterized in that: The tensile strength calculation formula of the rock to be tested is: In the above formula, σ t represents the tensile strength of the rock to be tested, k represents the slope of the fitting curve, a1, a2 and a3 represent the first tensile strength coefficient, the second tensile strength coefficient and the third tensile strength coefficient respectively, wherein the first tensile strength coefficient, the second tensile strength coefficient and the third tensile strength coefficient are obtained by data regression analysis based on the compressive strength and tensile strength of different rocks.

4. The method for determining rock cuttability according to claim 3, characterized in that: The calculation formula of the cutting force is: FC=(b1σ t +b2)d In the above formula, FC represents cutting force, d represents cutting thickness, b1 and b2 represent the first cutting force coefficient and the second cutting force coefficient respectively, wherein the first cutting force coefficient and the second cutting force coefficient are obtained by data regression analysis based on cutting parameters and tensile strength of different rocks.

5. The method for determining rock cuttability according to claim 3, characterized in that: The calculation formula of the cutting specific energy consumption is: IF opt =c1σ t +c2 In the above formula, SE opt represents the cutting ratio energy consumption, c1 and c2 represent the first cutting ratio energy consumption coefficient and the second cutting ratio energy consumption coefficient respectively, wherein the first cutting ratio energy consumption coefficient and the second cutting ratio energy consumption coefficient are obtained by performing data regression analysis according to the cutting parameters and tensile strength of different rocks.

6. A system for determining rock cuttability, characterized in that: The system comprises: A data acquisition module is used to obtain the intrusion force and intrusion depth of the rock to be tested; A curve generating module, used for obtaining a rock intrusion variation curve according to the intrusion force and the intrusion depth; A parameter calculation module, used for calculating the cutting force and cutting specific energy consumption according to the rock intrusion change curve; The test determination module is used to determine the cuttability of the rock to be tested according to the cutting force and the cutting specific energy consumption.

7. A testing device for determining the cuttability of rock, characterized in that: The test device is installed on the cutting component of the tunnel boring machine. The test device is used to measure the intrusion force and intrusion depth of the rock to be tested. The test device includes: a telescopic inner cylinder, a telescopic outer cylinder, a telescopic cylinder seat, an intrusion test cone, an elastic component, a telescopic displacement sensor, a pressure sensor and a base, wherein: One end of the base is mounted on the cutting component of the tunnel boring machine, the telescopic cylinder seat is fixed to the other end of the base, one end of the telescopic outer cylinder is connected to the telescopic cylinder seat, and the telescopic inner cylinder is connected to the other end of the telescopic outer cylinder; The intrusion test cone is arranged inside the telescopic inner cylinder, and the intrusion test cone is fixedly connected to the other end of the base. The telescopic displacement sensor is arranged between the telescopic inner cylinder and the telescopic cylinder seat, and the telescopic displacement sensor is used to measure the intrusion depth of the rock to be tested. The pressure sensor is arranged on the telescopic cylinder seat, and the telescopic inner cylinder is connected to the pressure sensor through the elastic component, and the pressure sensor is used to measure the intrusion force of the rock to be tested.

8. A tunnel boring machine, characterized in that: The tunnel boring machine comprises the testing device for determining the cuttability of rock as claimed in claim 7.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: The processor executes the computer program to implement the method for determining rock cuttability according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining rock cuttability according to any one of claims 1 to 5 is implemented.

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