Methods, apparatus, electronic equipment, and storage media for determining the mechanical parameters of rocks.

Abstract

This application relates to the field of rock engineering technology, and provides a method, apparatus, electronic device, and storage medium for determining the mechanical parameters of rocks. It includes: determining the resistivity of each sub-region on a cross-section of a target rock; if the target rock meets a preset homogeneity requirement based on the resistivity of each sub-region, then determining the mechanical parameters of the target rock based on the resistivity of each sub-region and the type of the target rock, combined with a rock mechanical parameter determination function; wherein the rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples. This application can accurately determine the mechanical parameters of a target rock based on its type and the resistivity of each sub-region, combined with a rock mechanical parameter determination function based on the resistivity and corresponding mechanical parameters of different types of rock samples, thereby improving the accuracy of determining the mechanical parameters of rock samples.

Description

Technical Field

[0001] This application relates to the field of rock engineering technology, specifically to a method, apparatus, electronic device, and storage medium for determining the mechanical parameters of rocks. Background Technology

[0002] In rock mechanics testing, effectively controlling a single variable in the experiment is a challenging problem that has plagued many researchers. This is because each rock sample contains unique natural fissures, resulting in unavoidable differences between samples. Therefore, obtaining a batch of rock samples with identical structures in a single rock mechanics test is virtually impossible, and these structural differences inevitably lead to variations in the mechanical properties of the rock samples. Currently, measuring the compressive strength, tensile strength, cohesion, and internal friction angle of rock samples requires conducting separate tests for each parameter to obtain specific values. However, the same rock sample is destroyed after measuring the compressive strength, necessitating the acquisition of new samples to measure other parameters. This results in the final mechanical parameters being derived from different rock samples. Compared to parameters obtained from a single rock sample, parameters obtained from different rock samples inevitably contain testing errors, leading to low accuracy in determining the mechanical parameters of rock samples. Summary of the Invention

[0003] This application provides a method, apparatus, electronic device, and storage medium for determining the mechanical parameters of rocks, in order to solve the problem that the mechanical parameters obtained from different rock samples inevitably have testing errors, resulting in low accuracy in determining the mechanical parameters of rock samples.

[0004] In a first aspect, embodiments of this application provide a method for determining the mechanical parameters of a rock, comprising:

[0005] Determine the resistivity of each sub-region on the cross-section of the target rock;

[0006] If the target rock meets the preset uniformity requirement based on the resistivity of each sub-region, then the mechanical parameters of the target rock are determined by combining the resistivity of each sub-region and the type of the target rock with the rock mechanical parameter determination function.

[0007] The rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples.

[0008] In one embodiment, the mechanical parameters include compressive strength, tensile strength, cohesion, and internal friction angle. The rock mechanical parameter determination function includes rock mechanical parameter determination functions corresponding to different types of rocks. The step of determining the mechanical parameters of the target rock based on the resistivity of each sub-region and the type of the target rock, combined with the rock mechanical parameter determination function, includes:

[0009] The average resistivity of the target rock is obtained by averaging the resistivity of each sub-region.

[0010] Among the rock mechanics parameter determination functions corresponding to different types of rocks, the rock mechanics parameter determination function corresponding to the type of the target rock is determined as the target rock mechanics parameter determination function.

[0011] Based on the average resistivity and the mechanical parameters of the target rock, the compressive strength, tensile strength, cohesion, and internal friction angle of the target rock are determined using a function.

[0012] In one embodiment, determining the resistivity of each sub-region on a cross-section of the target rock includes:

[0013] The cross-section of the target rock is divided into multiple sub-regions of equal area;

[0014] The resistivity of each of the sub-regions is determined.

[0015] In one embodiment, determining the resistivity of each of the sub-regions includes:

[0016] Obtain the cross-sectional area and height of the target rock;

[0017] Determine the voltage and current of each sub-region on the energized circuit;

[0018] The resistivity of each sub-region is determined based on the cross-sectional area, the height, and the current and voltage corresponding to each sub-region.

[0019] In one embodiment, after determining the resistivity of each sub-region on the cross-section of the target rock, the method further includes:

[0020] Determine the resistivity deviation between each pair of sub-regions in each of the aforementioned sub-regions;

[0021] Based on the resistivity deviation values, it is determined whether the target rock meets the preset uniformity requirement, wherein the preset uniformity requirement is that the resistivity deviation values ​​are all less than the preset deviation threshold.

[0022] In one embodiment, before determining the resistivity of each sub-region on the cross-section of the target rock, the method further includes:

[0023] Obtain different types of rock sample sets, and perform the following operations for each type of rock sample set:

[0024] Rock samples that do not meet the preset homogeneity requirements in the current type of rock sample set are removed to obtain the target sample set.

[0025] Based on each rock sample in the target sample set, determine the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type.

[0026] Based on the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type, determine the rock mechanics parameter determination function corresponding to the rock sample of the current type.

[0027] In one embodiment, the rock mechanics parameter determination function includes a compressive strength determination function, a tensile strength determination function, a cohesion determination function, and an internal friction angle determination function.

[0028] Secondly, embodiments of this application provide a device for determining the mechanical parameters of rocks, comprising:

[0029] The first determining module is used to determine the resistivity of each sub-region on the cross-section of the target rock;

[0030] The second determining module is used to determine the mechanical parameters of the target rock if the target rock meets the preset uniformity requirements based on the resistivity of each of the sub-regions, and in combination with the rock mechanical parameter determining function, based on the resistivity of each of the sub-regions and the type of the target rock. The rock mechanical parameter determining function is based on the resistivity of different types of rock samples and their corresponding mechanical parameters.

[0031] Thirdly, embodiments of this application provide an electronic device, including a processor and a memory storing a computer program, wherein the processor executes the program to implement the steps of the method for determining the mechanical parameters of rocks as described in the first or second aspect.

[0032] Fourthly, embodiments of this application provide a storage medium, which is a computer-readable storage medium including a computer program. When the computer program is executed by a processor, it implements the steps of the method for determining the mechanical parameters of rock described in the first or second aspect.

[0033] The rock mechanical parameter determination method, apparatus, electronic device, and storage medium provided in this application embodiment can accurately determine the mechanical parameters of the target rock by determining the resistivity of each sub-region on the cross-section of a target rock with good homogeneity, based on the type of the target rock and the resistivity of each sub-region, combined with the rock mechanical parameter determination function based on the resistivity and corresponding mechanical parameters of different types of rock samples. This can improve the accuracy of determining the mechanical parameters of rock samples. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is one of the flowcharts illustrating the method for determining the mechanical parameters of rocks provided in the embodiments of this application;

[0036] Figure 2 This is a second schematic flowchart of the method for determining the mechanical parameters of rocks provided in the embodiments of this application;

[0037] Figure 3 This is the third flowchart illustrating the method for determining the mechanical parameters of rocks provided in the embodiments of this application;

[0038] Figure 4 This is a schematic diagram of a scenario for determining the voltage and current of a rock, provided in an embodiment of this application.

[0039] Figure 5 This is the fourth flowchart illustrating the method for determining the mechanical parameters of rocks provided in the embodiments of this application;

[0040] Figure 6 This is a schematic diagram of the functional modules of an embodiment of the rock mechanical parameter determination device of this application;

[0041] Figure 7 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Understandably, minimizing structural differences between rock samples through screening facilitates the smooth conduct of rock mechanics experiments. Therefore, rock samples need to be screened before testing, typically through methods such as P-wave velocity detection and sample density measurement. From a testing perspective, both P-wave velocity and density characterize the overall properties of the sample. However, for samples with well-developed local fractures but relatively intact other parts, the measured values ​​may be "averaged," thus affecting the screening results. Actual experimental results show that samples screened using these methods still exhibit significant differences under the same testing conditions. Therefore, how to accurately and effectively screen rock samples for rock mechanics experiments is a pressing issue that needs to be addressed.

[0044] Studies have shown that rock media have the ability to conduct electric current, i.e., rocks are conductive, and resistivity is commonly used to characterize this property. The resistivity of rocks is related to the mineral composition and content, mineral structure, and porosity, which in turn directly affect the mechanical parameters of rocks. Therefore, a method for screening rock samples and determining their mechanical parameters by measuring resistivity is proposed.

[0045] The following describes in detail the method, apparatus, electronic device, and storage medium for determining the mechanical parameters of rocks provided by the present invention, with reference to embodiments.

[0046] Figure 1 This is one of the flowcharts illustrating a method for determining the mechanical parameters of rock provided in an embodiment of this application. (Refer to...) Figure 1 This application provides a method for determining the mechanical parameters of rocks, which may include:

[0047] Step S100: Determine the resistivity of each sub-region on the cross-section of the target rock;

[0048] It should be noted that the execution subject of the rock mechanical parameter determination method provided in this application embodiment can be a computer device, such as a mobile phone, tablet computer, laptop computer, handheld computer, vehicle electronic device, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc.

[0049] In this embodiment, the rock whose mechanical parameters need to be determined can be identified as the target rock.

[0050] It should be noted that rocks can be divided into several types, specifically marble, granite, slate, conglomerate, limestone, mudstone, and andesite.

[0051] It should be noted that the rock whose mechanical parameters need to be determined in this embodiment can be a cube or a cylinder, therefore, the target rock has multiple cross sections.

[0052] In this embodiment, the cross-section of the target rock can be divided into multiple sub-regions. For example, if the target rock is a cubic rock, any one of its six cross-sections can be divided into multiple sub-regions. If the target rock is a cylinder, the circular cross-section (i.e., the top and bottom surfaces) can be divided into multiple sub-regions.

[0053] After dividing the cross section, the resistivity of each sub-region on the cross section of the target rock is determined.

[0054] By determining the resistivity of each sub-region on the cross-section of the target rock, the mechanical parameters of the target rock can be quickly determined based on the resistivity of each sub-region on the cross-section of the target rock, which can improve the speed of determining the mechanical parameters of rock samples.

[0055] It should be noted that after determining the resistivity of each sub-region on the cross-section of the target rock, the following is also included:

[0056] Step A1: Determine the resistivity deviation between each pair of sub-regions within each sub-region;

[0057] Step A2: Based on each resistivity deviation value, determine whether the target rock meets the preset uniformity requirement, wherein the preset uniformity requirement is that each resistivity deviation value is less than the preset deviation threshold.

[0058] The resistivity of each sub-region of the target rock is compared pairwise to determine the resistivity deviation between each sub-region and the resistivity of the other sub-regions, thus obtaining multiple resistivity deviation values.

[0059] Furthermore, it is determined whether any resistivity deviation among the resistivity deviation values ​​exceeds a preset deviation threshold, where the preset deviation threshold is a value set according to actual needs, such as 5%, 10%, etc.

[0060] If any resistivity deviation is greater than or equal to a preset deviation threshold, it indicates that the target rock has poor homogeneity, and therefore the target rock does not meet the preset homogeneity requirements. For rocks with poor homogeneity, the mechanical parameters are not determined in this embodiment; therefore, the target rock can be rejected, and the mechanical parameter determination process ends.

[0061] If all resistivity deviations are less than the preset deviation threshold, it indicates that the target rock has good uniformity, and thus the target rock meets the preset uniformity requirements.

[0062] It should be noted that, in this embodiment, the preset uniformity requirement is that on the same cross section of the rock, there are no two or more sub-regions whose resistivity deviation is greater than the preset deviation threshold, that is, all resistivity deviation values ​​are less than the preset deviation threshold.

[0063] Step S200: If the target rock meets the preset uniformity requirements based on the resistivity of each sub-region, then the mechanical parameters of the target rock are determined by combining the resistivity of each sub-region and the type of target rock with the rock mechanical parameter determination function.

[0064] Furthermore, if the resistivity of each sub-region indicates that the target rock meets the preset homogeneity requirements, it means that the target rock has good homogeneity. Therefore, the type of the target rock can be determined. Based on the type of the target rock, the rock mechanics parameter determination function corresponding to the target rock type is determined from the rock mechanics parameter determination functions for each type. The average resistivity of each sub-region is calculated, and based on the average resistivity of each sub-region and the rock mechanics parameter determination function corresponding to the target rock type, the mechanical parameters of the target rock are calculated.

[0065] Among them, the rock mechanical parameter determination functions include compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function. Therefore, based on the average resistivity of each sub-region, combined with the compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function, the mechanical parameters such as compressive strength, tensile strength, cohesion, and internal friction angle of the target rock can be determined respectively.

[0066] It should be noted that the rock mechanics parameter determination function is based on the resistivity of different types of rock samples and the corresponding mechanical parameters for each resistivity. In other words, the rock mechanics parameter determination function includes rock mechanics parameter determination functions corresponding to different types of rock samples.

[0067] It should be further noted that the rock mechanics parameter determination function for each type of rock includes multiple functions such as compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function.

[0068] Based on the resistivity of each sub-region of the target rock, the rock mechanical parameters corresponding to the type of the target rock can be quickly combined with the rock mechanical parameter determination function to accurately calculate the mechanical parameters of the target rock. This can improve the accuracy and speed of determining the mechanical parameters of rock samples.

[0069] The method for determining the mechanical parameters of rock provided in this application embodiment determines the resistivity of each sub-region on the cross-section of the target rock. If the resistivity of each sub-region indicates that the target rock meets a preset homogeneity requirement, then the mechanical parameters of the target rock are determined based on the resistivity of each sub-region and the type of the target rock, combined with a rock mechanical parameter determination function. The rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples. By determining the resistivity of each sub-region on the cross-section of the target rock with good homogeneity, the mechanical parameters of the target rock can be accurately determined based on the type of the target rock and the resistivity of each sub-region, combined with the rock mechanical parameter determination function based on the resistivity and corresponding mechanical parameters of different types of rock samples. This improves the accuracy of determining the mechanical parameters of rock samples.

[0070] Figure 2 This is a second schematic flowchart illustrating the method for determining the mechanical parameters of rock provided in this application embodiment. (Refer to...) Figure 2 In one embodiment, before determining the resistivity of each sub-region on the cross-section of the target rock, the method further includes:

[0071] Step B1: Obtain rock sample sets of different types, and perform the following operations for each type of rock sample set:

[0072] Understandably, before determining the resistivity of each sub-region on the cross-section of the target rock, this embodiment needs to construct rock mechanical parameter determination functions corresponding to different types of rocks. Therefore, it is necessary to obtain multiple rock samples of various types, with multiple samples of each type forming a rock sample set for that type, thus obtaining rock sample sets of different types. For example, a mudstone type rock sample set is formed from multiple mudstone type rock samples, a granite type rock sample set is formed from multiple granite type rock samples, and a sandstone type rock sample set is formed from multiple sandstone type rock samples, and so on.

[0073] Furthermore, for each type of rock sample set, steps B2-B4 are performed respectively to determine the rock mechanical parameter determination function corresponding to each type of rock.

[0074] Step B2: Remove rock samples from the current type of rock sample set that do not meet the preset homogeneity requirements to obtain the target sample set.

[0075] For each rock sample in the current type of rock sample set, the cross section of the rock sample can be divided into multiple sub-regions, and the resistivity of each sub-region can be determined separately.

[0076] Furthermore, the resistivity of each sub-region is differentially calculated, that is, the resistivity of each sub-region is differentially calculated with the resistivity of its sub-regions to obtain multiple resistivity deviation values.

[0077] Furthermore, each resistivity deviation value is compared with a preset deviation threshold to determine whether there is any resistivity deviation value between any two sub-regions that is greater than or equal to the preset deviation threshold. If so, the rock sample is determined to not meet the preset homogeneity requirements, indicating that the rock sample has poor homogeneity and needs to be discarded.

[0078] If the resistivity deviation values ​​between all sub-regions are less than the preset deviation threshold, then the rock sample is determined to meet the preset homogeneity requirement, and the rock sample is retained. The target sample set is composed of rock samples of the current type that meet the preset homogeneity requirement.

[0079] Step B3: Based on each rock sample in the target sample set, determine the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type.

[0080] After obtaining a target sample set consisting of rock samples of the same type that meet the preset homogeneity requirements, the average resistivity of each rock sample in the target sample set can be determined. Specifically, this can be obtained by averaging the resistivity of each sub-region of each rock sample.

[0081] Furthermore, the rock samples in the target sample set are grouped. For example, if the target sample set includes 40 rock samples, the 40 rock samples are divided into four groups (they can be divided into 10 samples each, or they can be randomly grouped so that the number of rock samples in each group is different). Mechanical tests of compressive strength, tensile strength, cohesion and internal friction angle are performed on each group to obtain the compressive strength, tensile strength, cohesion and internal friction angle of each group of rock samples.

[0082] Understandably, when grouping rock samples, those with an average resistivity deviation value less than a preset deviation threshold can be grouped together. For example, rock samples with a resistivity deviation value less than 5% can be grouped together among multiple rock samples.

[0083] For example, a mechanical test can be performed on the compressive strength of the first group of rock samples to obtain the compressive strength of each rock sample in the group; a mechanical test can be performed on the tensile strength of the second group of rock samples to obtain the tensile strength of each rock sample in the group; a mechanical test can be performed on the cohesion of the third group of rock samples to obtain the cohesion of each rock sample in the group; and a mechanical test can be performed on the internal friction angle of the fourth group of rock samples to obtain the internal friction angle of each rock sample in the group.

[0084] Step B4: Based on the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type, determine the rock mechanics parameter determination function corresponding to the rock sample of the current type.

[0085] After obtaining the average resistivity of the rock sample of the current type, and the corresponding mechanical parameters such as compressive strength, tensile strength, cohesion, and internal friction angle, the average resistivity of each rock sample can be statistically analyzed with the corresponding compressive strength, tensile strength, cohesion, and internal friction angle. Through mathematical fitting, a functional relationship between the resistivity of the rock sample and its compressive strength, tensile strength, cohesion, and internal friction angle can be established, yielding rock mechanical parameter determination functions such as the compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function. These functions are then stored in a correlation function database. This allows for the subsequent determination of the compressive strength, tensile strength, cohesion, and internal friction angle of the rock based on its resistivity and type, using the compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function stored in the database for each rock type.

[0086] In this embodiment, rock mechanical parameter determination functions are pre-determined based on different types of rock samples with good homogeneity. This allows for the rapid and accurate determination of various mechanical parameters of the rock based on its resistivity and type, combined with the corresponding rock mechanical parameter determination functions. This improves the accuracy and speed of determining the mechanical parameters of rock samples.

[0087] Figure 3 This is the third flowchart illustrating the method for determining the mechanical parameters of rock provided in this application embodiment. (Refer to...) Figure 3 In one embodiment, determining the resistivity of each sub-region on a cross-section of the target rock includes:

[0088] Step S101: Divide the cross-section of the target rock into multiple sub-regions of equal area;

[0089] Step S102: Determine the resistivity of each sub-region.

[0090] After obtaining the target rock, if the target rock is cubic, divide any cross-section of the target rock into multiple sub-regions of equal area. For example, any cross-section can be divided into four sub-regions of equal area. It should be noted that after dividing one cross-section into multiple sub-regions of equal area, in order to accurately determine the resistivity of each sub-region, it is also necessary to divide the corresponding cross-section into the same number of sub-regions of equal area. For example, if the upper surface of the cubic target rock is divided into four sub-regions of equal area, then the lower surface of the target rock also needs to be divided into four sub-regions of equal area.

[0091] If the target rock is a cylinder, the upper and lower circular surfaces of the target rock can be divided into multiple sub-regions of equal area.

[0092] After dividing the target rock into sections, two electrode plates with the same or similar areas are obtained, one as a positive electrode plate and the other as a negative electrode plate. Simultaneously, a power supply, wires, an ammeter, and a voltmeter are acquired. Based on the power supply, wires, the two electrode plates, and the ammeter and voltmeter, the resistivity of each sub-region of the target rock is determined.

[0093] Furthermore, the resistivity of each sub-region is determined, including:

[0094] Step S1021: Obtain the cross-sectional area and height of the target rock;

[0095] Step S1022: Determine the voltage and current of each sub-region on the energized circuit;

[0096] Step S1023: Determine the resistivity of each sub-region based on the cross-sectional area and height, and the current and voltage corresponding to each sub-region.

[0097] Furthermore, the target rock is measured regularly to obtain its cross-sectional area and height.

[0098] A complete circuit is formed by connecting the power supply, wires, two electrodes, an ammeter, a voltmeter, and the target rock. The two electrodes are used to connect to the target rock, ensuring the entire circuit is complete. See details... Figure 4 , Figure 4 This is a schematic diagram illustrating a scenario for determining the voltage and current of a rock, as provided in an embodiment of this application. Figure 4 The system includes a power supply device 1, wires, two electrode plates 4 and 6, an ammeter 3, a voltmeter 2, and a target rock 5. It should be noted that the two electrode plates 4 and 6 are respectively connected to the same sub-region on two opposite cross-sections of the target rock 5. Further, the two electrode plates are connected to each sub-region and energized to obtain the current and voltage of each sub-region in the energized circuit. For example, first, the two electrode plates are connected to one sub-region and energized to obtain the current and voltage of that sub-region in the energized circuit; then, the two electrode plates are connected to the next sub-region and energized to obtain the current and voltage of the next sub-region in the energized circuit, and so on, until the resistivity of all sub-regions is obtained.

[0099] For each sub-region, the corresponding current and voltage, as well as the cross-sectional area and height of the target rock, are input into the resistivity calculation formula. The resistivity of that sub-region is then calculated using the formula. The resistivity calculation formula can be:

[0100]

[0101] Where ρ is resistivity, U is voltage, I is current, S is cross-sectional area, and L is height.

[0102] After completing the current and voltage measurements and resistivity calculations for each sub-region, the resistivity of each sub-region is obtained.

[0103] This embodiment calculates the resistivity of each sub-region of the target rock to determine its uniformity, avoiding the need to determine mechanical parameters for rocks with poor uniformity and improving the accuracy of the determined rock mechanical parameters.

[0104] Figure 5 This is the fourth flowchart illustrating the method for determining the mechanical parameters of rock provided in this application embodiment. (Refer to...) Figure 5 In one embodiment, the mechanical parameters of the target rock are determined based on the resistivity of each sub-region and the type of target rock, combined with a rock mechanical parameter determination function, including:

[0105] Step S201: Calculate the average resistivity of each sub-region to obtain the average resistivity of the target rock;

[0106] After determining that the target rock meets the preset uniformity requirements, the resistivity of each sub-region is averaged. This is done by summing the resistivity of each sub-region and then calculating the ratio with the number of sub-regions. The result is then determined as the average resistivity of the target rock.

[0107] Step S202: Among the rock mechanics parameter determination functions corresponding to different types of rocks, the rock mechanics parameter determination function corresponding to the type of target rock is determined as the target rock mechanics parameter determination function;

[0108] After determining the type of target rock, the rock mechanical parameter determination function required to determine the mechanical parameters of the target rock can be found from multiple rock mechanical parameter determination functions corresponding to different types, and then determined as the target rock mechanical parameter determination function.

[0109] First, the type that is the same as the target rock among multiple types can be identified as the target type, and then the rock mechanical parameter determination function corresponding to the target type can be identified as the target rock mechanical parameter determination function.

[0110] Step S203: Determine the compressive strength, tensile strength, cohesion, and internal friction angle of the target rock based on the function determined by the average resistivity and the mechanical parameters of the target rock.

[0111] It should be noted that since the rock mechanics parameter determination function includes the compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function, the target rock mechanics parameter determination function also includes the compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function.

[0112] The average resistivity of the target rock can be input into the compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function for calculation. After the calculation is completed, the compressive strength, tensile strength, cohesion, and internal friction angle of the target rock are obtained respectively.

[0113] This embodiment can quickly and accurately determine various mechanical parameters of a rock by using its average resistivity and type, thereby improving the accuracy and speed of determining the rock's mechanical parameters.

[0114] Furthermore, this application also provides a device for determining the mechanical parameters of rocks.

[0115] Reference Figure 6 , Figure 6 This is a schematic diagram of the functional modules of an embodiment of the rock mechanical parameter determination device of this application.

[0116] The device for determining the mechanical parameters of the rock includes:

[0117] The first determining module 100 is used to determine the resistivity of each sub-region on the cross-section of the target rock;

[0118] The second determining module 200 is used to determine the mechanical parameters of the target rock based on the resistivity of each sub-region and the type of the target rock, in conjunction with a rock mechanical parameter determining function, if the target rock meets the preset uniformity requirements based on the resistivity of each sub-region and the type of the target rock. The rock mechanical parameter determining function is based on the resistivity of different types of rock samples and their corresponding mechanical parameters.

[0119] The rock mechanical parameter determination device provided in this application determines the resistivity of each sub-region on the cross-section of a target rock. If the resistivity of each sub-region indicates that the target rock meets a preset homogeneity requirement, then the mechanical parameters of the target rock are determined based on the resistivity of each sub-region and the type of the target rock, combined with a rock mechanical parameter determination function. The rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples. By determining the resistivity of each sub-region on the cross-section of a target rock with good homogeneity, the mechanical parameters of the target rock can be accurately determined based on the type of the target rock and the resistivity of each sub-region, combined with the rock mechanical parameter determination function based on the resistivity and corresponding mechanical parameters of different types of rock samples. This improves the accuracy of determining the mechanical parameters of rock samples.

[0120] In one embodiment, the first determining module 100 is specifically used for:

[0121] The cross-section of the target rock is divided into multiple sub-regions of equal area;

[0122] The resistivity of each of the sub-regions is determined.

[0123] In one embodiment, the first determining module 100 includes a determining unit (not shown in the figure), the determining unit being used for:

[0124] Obtain the cross-sectional area and height of the target rock;

[0125] Determine the voltage and current of each sub-region on the energized circuit;

[0126] The resistivity of each sub-region is determined based on the cross-sectional area, the height, and the current and voltage corresponding to each sub-region.

[0127] In one embodiment, the first determining module 100 is further configured to:

[0128] Obtain different types of rock sample sets, and perform the following operations for each type of rock sample set:

[0129] Rock samples that do not meet the preset homogeneity requirements in the current type of rock sample set are removed to obtain the target sample set.

[0130] Based on each rock sample in the target sample set, determine the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type.

[0131] Based on the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type, determine the rock mechanics parameter determination function corresponding to the rock sample of the current type.

[0132] In one embodiment, the first determining module 100 is further configured to:

[0133] Determine the resistivity deviation between each pair of sub-regions in each of the aforementioned sub-regions;

[0134] Based on the resistivity deviation values, it is determined whether the target rock meets the preset uniformity requirement, wherein the preset uniformity requirement is that the resistivity deviation values ​​are all less than the preset deviation threshold.

[0135] In one embodiment, the second determining module 200 is specifically used for:

[0136] The average resistivity of the target rock is obtained by averaging the resistivity of each sub-region.

[0137] Among the rock mechanics parameter determination functions corresponding to different types of rocks, the rock mechanics parameter determination function corresponding to the type of the target rock is determined as the target rock mechanics parameter determination function.

[0138] Based on the average resistivity and the mechanical parameters of the target rock, the compressive strength, tensile strength, cohesion, and internal friction angle of the target rock are determined using a function.

[0139] Figure 7 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 7 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call a computer program in the memory 830 to execute the steps of a method for determining the mechanical parameters of rocks, such as including:

[0140] Determine the resistivity of each sub-region on the cross-section of the target rock;

[0141] If the target rock meets the preset uniformity requirement based on the resistivity of each sub-region, then the mechanical parameters of the target rock are determined by combining the resistivity of each sub-region and the type of the target rock with the rock mechanical parameter determination function.

[0142] The rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples.

[0143] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0144] On the other hand, embodiments of this application also provide a storage medium, which is a computer-readable storage medium storing a computer program. The computer program is used to cause a processor to execute the steps of the methods provided in the above embodiments, including, for example:

[0145] Determine the resistivity of each sub-region on the cross-section of the target rock;

[0146] If the target rock meets the preset uniformity requirement based on the resistivity of each sub-region, then the mechanical parameters of the target rock are determined by combining the resistivity of each sub-region and the type of the target rock with the rock mechanical parameter determination function.

[0147] The rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples.

[0148] The computer-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical storage (e.g., CD, DVD, BD, HVD), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0149] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0150] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for determining the mechanical parameters of a rock, characterized in that, include: Determine the resistivity of each sub-region on the cross-section of the target rock; If the target rock meets the preset uniformity requirement based on the resistivity of each sub-region, then the mechanical parameters of the target rock are determined by combining the resistivity of each sub-region and the type of the target rock with the rock mechanical parameter determination function. The rock mechanical parameter determination function is based on the resistivity and corresponding mechanical parameters of different types of rock samples. Before determining the resistivity of each sub-region on the cross-section of the target rock, the process also includes: Obtain different types of rock sample sets, and perform the following operations for each type of rock sample set: Rock samples that do not meet the preset homogeneity requirements in the current type of rock sample set are removed to obtain the target sample set. Based on each rock sample in the target sample set, determine the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the rock sample of the current type. Based on the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the current type of rock sample, determine the rock mechanics parameter determination function corresponding to the current type of rock sample; After determining the resistivity of each sub-region on the cross-section of the target rock, the method further includes: Determine the resistivity deviation between each pair of sub-regions in each of the aforementioned sub-regions; Based on the resistivity deviation values, it is determined whether the target rock meets the preset uniformity requirement, wherein the preset uniformity requirement is that the resistivity deviation values ​​are all less than the preset deviation threshold.

2. The method for determining the mechanical parameters of rock according to claim 1, characterized in that, The mechanical parameters include compressive strength, tensile strength, cohesion, and internal friction angle. The rock mechanical parameter determination function includes rock mechanical parameter determination functions corresponding to different types of rocks. The determination of the mechanical parameters of the target rock based on the resistivity of each sub-region and the type of the target rock, combined with the rock mechanical parameter determination function, includes: The average resistivity of the target rock is obtained by averaging the resistivity of each sub-region. Among the rock mechanics parameter determination functions corresponding to different types of rocks, the rock mechanics parameter determination function corresponding to the type of the target rock is determined as the target rock mechanics parameter determination function. Based on the average resistivity and the mechanical parameters of the target rock, the compressive strength, tensile strength, cohesion, and internal friction angle of the target rock are determined using a function.

3. The method for determining the mechanical parameters of rock according to claim 1, characterized in that, Determining the resistivity of each sub-region on the cross-section of the target rock includes: The cross-section of the target rock is divided into multiple sub-regions of equal area; The resistivity of each of the sub-regions is determined.

4. The method for determining the mechanical parameters of rock according to claim 3, characterized in that, The determination of the resistivity of each of the sub-regions includes: Obtain the cross-sectional area and height of the target rock; Determine the voltage and current of each sub-region on the energized circuit; The resistivity of each sub-region is determined based on the cross-sectional area and height, and the current and voltage corresponding to each sub-region.

5. The method for determining the mechanical parameters of rock according to any one of claims 1 to 4, characterized in that, The rock mechanics parameter determination functions include compressive strength determination function, tensile strength determination function, cohesion determination function, and internal friction angle determination function.

6. A device for determining the mechanical parameters of a rock, characterized in that, include: The first determining module is used to determine the resistivity of each sub-region on the cross-section of the target rock; The second determining module is used to determine the mechanical parameters of the target rock if the target rock meets the preset uniformity requirements based on the resistivity of each of the sub-regions, and in combination with the rock mechanical parameter determining function, based on the resistivity of each of the sub-regions and the type of the target rock. The rock mechanical parameter determining function is based on the resistivity of different types of rock samples and their corresponding mechanical parameters. The first determining module is further configured to acquire rock sample sets of different types, and perform the following operations for each type of rock sample set: remove rock samples in the current type of rock sample set that do not meet the preset homogeneity requirements to obtain a target sample set; determine the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the current type of rock sample based on each rock sample in the target sample set; and determine the rock mechanical parameter determination function corresponding to the current type of rock sample based on the average resistivity, compressive strength, tensile strength, cohesion, and internal friction angle of the current type of rock sample. The first determining module is further configured to determine the resistivity deviation value between each pair of sub-regions in each of the sub-regions; and based on each resistivity deviation value, determine whether the target rock meets a preset uniformity requirement, wherein the preset uniformity requirement is that each resistivity deviation value is less than a preset deviation threshold.

7. An electronic device comprising a processor and a memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method for determining the mechanical parameters of rock according to any one of claims 1 to 5.

8. A storage medium, said storage medium being a computer-readable storage medium, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for determining the mechanical parameters of rock according to any one of claims 1 to 5.

Images