A method and apparatus for treating a fractured and swelling rock mass

Abstract

The application provides a broken and expanded rock mass processing method and device, which can determine the working face length of a mining working face, the rock layer thickness of a caving zone rock layer and sample size setting information; based on the working face length, the rock layer thickness and the sample size setting information, the rock layer sample of the caving zone rock layer is prepared; the rock layer sample is subjected to a mining overlying rock caving test to obtain a broken and expanded rock mass of the rock layer sample; the broken and expanded rock mass is photographed to obtain a target image including the broken and expanded rock mass; the target image is subjected to broken and expanded rock mass contour detection to obtain contour coordinate information; and based on the contour coordinate information, size feature information of the broken and expanded rock mass is obtained. The application can effectively realize the acquisition of the size feature information of the broken and expanded rock mass.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mining engineering, and in particular to a broken and expanded rock mass processing method and device. BACKGROUND

[0002] With the development of science and technology, the research and test technology of mining overburden rock is continuously improved.

[0003] Currently, the existing technology can simulate the mining-out area of the mining working face and design the laboratory broken stone compression test through the synthetic rock mass means in the numerical software, and then analyze the mining stress and strain relationship and study the mining stress evolution law. Among them, the broken and expanded rock mass is included in the mining-out area, and the size characteristic information of the broken and expanded rock mass will significantly affect the accuracy of the test result.

[0004] However, the existing technology cannot effectively obtain the above size characteristic information. SUMMARY

[0005] The present application provides a broken and expanded rock mass processing method and device to solve the defect that the existing technology cannot effectively obtain the above size characteristic information, and effectively realize the acquisition of the above size characteristic information.

[0006] The present application provides a broken and expanded rock mass processing method, comprising:

[0007] determining working face length of the mining working face, rock layer thickness of the caving zone rock layer, and sample size setting information;

[0008] preparing the rock layer sample of the caving zone rock layer based on the working face length, the rock layer thickness, and the sample size setting information;

[0009] conducting the mining overburden rock caving test on the rock layer sample to obtain the broken and expanded rock mass of the rock layer sample;

[0010] obtaining a target image including the broken and expanded rock mass by shooting the broken and expanded rock mass;

[0011] conducting the broken and expanded rock mass contour detection on the target image to obtain contour coordinate information;

[0012] obtaining the size characteristic information of the broken and expanded rock mass based on the contour coordinate information.

[0013] Optionally, the sample size setting information includes sample length and sample width; and the preparing the rock layer sample of the caving zone rock layer based on the working face length, the rock layer thickness, and the sample size setting information comprises:

[0014] determining the ratio of the sample length to the working face length as a similarity ratio;

[0015] The product of the similarity ratio and the rock layer thickness is determined as the sample thickness;

[0016] The rock stratum sample is prepared according to the sample length, the sample width, and the sample thickness.

[0017] Optionally, when the sample size setting information includes a similarity ratio, the step of conducting a mining-induced overburden collapse test on the rock strata sample to obtain the fragmented rock mass of the rock strata sample includes:

[0018] Determine the vertical distance between the caving zone strata and the bottom plate of the mining face;

[0019] The product of the vertical distance and the similarity ratio is determined as the test height;

[0020] The rock sample was subjected to a free-fall test at the specified test height to obtain the fragmented rock mass.

[0021] Optionally, obtaining a target image including the shattered rock mass by photographing the shattered rock mass includes:

[0022] The shattered rock mass is laid flat into a transparent cylinder with an inner diameter of a predefined length; wherein, the predefined length is the length of the rock sample.

[0023] The target image is obtained by photographing the transparent cylinder from the front.

[0024] Optionally, when the caving zone comprises multiple rock layers; the step of spreading the shattered rock mass into a transparent cylinder with a predefined inner diameter includes:

[0025] Determine the distribution order of each of the aforementioned rock strata in the caving zone;

[0026] According to the distribution order, the brecciated rock masses corresponding to each of the rock layers are laid flat in the transparent cylinder.

[0027] Optionally, after obtaining the target image by photographing the transparent cylinder from the front, the method for processing the fragmented rock mass further includes:

[0028] According to the distribution order, the brecciated rock mass corresponding to each of the rock layers is laid flat in a rigid cylinder with an inner diameter of the predefined length;

[0029] Using a rock mechanics servo testing machine, a crushed rock compression test was conducted on the crushed rock mass corresponding to each of the rock layers in the rigid cylinder to obtain the rock mass stress-strain curve.

[0030] Optionally, the step of performing contour detection on the target image to obtain contour coordinate information includes:

[0031] The target image is input into the trained concave rock mass contour detection model to obtain the contour detection result output by the concave rock mass contour detection model; wherein, the concave rock mass contour detection model is obtained by using images including on-site concave rock masses as training samples to train a pre-trained image contour detection model;

[0032] The coordinate information corresponding to the contour detection result is determined as the contour coordinate information.

[0033] Optionally, obtaining the size characteristic information of the brecciated rock mass based on the contour coordinate information includes:

[0034] Based on the contour coordinate information, the grain size distribution information of the second breccia rock mass is determined; wherein, the second breccia rock mass is the breccia rock mass in the target image;

[0035] The particle size distribution information is determined as the size characteristic information.

[0036] Optionally, determining the grain size distribution information of the second brecciated rock mass based on the contour coordinate information includes:

[0037] Based on the contour coordinate information, the grain size distribution range of the second brecciated rock mass is determined;

[0038] The number of the second fragmented rock mass whose particle size falls within the particle size distribution range is determined as the total number of rock masses;

[0039] The particle size distribution range is divided into a first sub-range according to a preset sub-range length;

[0040] The number of the second fragmented rock mass whose particle size is within the first sub-interval is determined as the number of rock masses in the sub-interval;

[0041] Determine the ratio of the number of rock masses in the sub-interval to the total number of rock masses;

[0042] The particle size distribution range and the ratio are determined as the particle size distribution information.

[0043] The present invention also provides a device for processing shattered rock mass, comprising: a first determining unit, a first preparing unit, a first obtaining unit, a second obtaining unit, a third obtaining unit, and a fourth obtaining unit;

[0044] The first determining unit is used to determine the working face length of the longwall face, the rock stratum thickness of the caving zone, and the sample size setting information;

[0045] The first preparation unit is used to prepare rock stratum samples of the collapse zone based on the working face length, the rock stratum thickness and the sample size setting information;

[0046] The first obtaining unit is used to conduct a mining-induced overburden collapse test on the rock stratum sample to obtain the fragmented and swollen rock mass of the rock stratum sample;

[0047] The second obtaining unit is used to obtain a target image including the shattered rock mass by photographing the shattered rock mass;

[0048] The third obtaining unit is used to perform contour detection of the fractured rock mass in the target image and obtain contour coordinate information;

[0049] The fourth obtaining unit is used to obtain the size characteristic information of the fractured rock mass based on the contour coordinate information.

[0050] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described method for processing fragmented and distended rock masses.

[0051] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the above-described method for processing fragmented and distended rock masses.

[0052] The method and apparatus for processing shattered rock masses provided by this invention can prepare rock strata samples that meet the test requirements. By simulating mining-induced overburden collapse, the rock strata samples are subjected to mining-induced overburden collapse tests to obtain the corresponding shattered rock masses. Then, image processing technology is used to obtain the dimensional characteristic information of the shattered rock masses. The dimensional characteristic information of the shattered rock masses can be obtained under simulated mining-induced overburden collapse, which effectively improves the accuracy and efficiency of obtaining dimensional characteristic information and effectively realizes the acquisition of dimensional characteristic information of shattered rock masses. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in this invention 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 invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0054] Figure 1 This is a schematic flowchart of the method for treating fragmented and swollen rock mass provided by the present invention;

[0055] Figure 2 This is a structural schematic diagram of the longwall face and caving zone provided by the present invention;

[0056] Figure 3 This is a schematic diagram of the free fall test performed on specimen 1 provided by the present invention;

[0057] Figure 4 This is a schematic diagram of the free fall test of specimen 2 provided by the present invention;

[0058] Figure 5 This is a schematic diagram of the free fall test of specimen 3 provided by the present invention;

[0059] Figure 6 This is a schematic diagram of the shattered rock mass of each rock layer sample provided by the present invention;

[0060] Figure 7 This is a schematic diagram of the structure of the rock mass processing device provided by the present invention;

[0061] Figure 8 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0063] The following is combined with Figures 1-6 The present invention describes a method for processing fragmented and swollen rock masses, which may include the following steps:

[0064] S101. Determine the working face length, stratum thickness of the caving zone, and sample size settings for the longwall mining face.

[0065] Among them, the caving zone rock strata can be the rock strata included in the mining overburden caving zone.

[0066] Specifically, the rock strata in a caving zone may include one or more rock strata. The thickness of the rock strata in a caving zone can be the thickness of one or more of these rock strata.

[0067] It should be noted that the present invention can test the uniaxial compressive strength of the direct roof of the longwall face through in-situ borehole penetration testing. Based on the uniaxial compressive strength, in-situ borehole observation of the roof surrounding rock structure, existing geological data, and theoretical analysis, the working face length and relevant parameters of the mining-induced overburden caving zone of the longwall face can be determined.

[0068] Specifically, this invention can determine the thickness of the strata in the caving zone based on the geological and mining conditions of the mining area and the analysis of measured data. For mining areas without measured data, this invention can test the uniaxial compressive strength of the immediate roof of the longwall face, determine the hardness property of the caving zone strata based on the uniaxial compressive strength, select the appropriate strata thickness calculation formula based on the hardness property, and determine the strata thickness of the caving zone strata based on the strata thickness calculation formula.

[0069] Among them, the sample size setting information can be the relevant size information set for preparing rock strata samples of the collapse zone in accordance with the principle of similarity.

[0070] Optionally, the specimen size setting information may include specimen length, specimen thickness and / or specimen width;

[0071] Optionally, the sample size setting information may also include the similarity ratio and the dimension in a certain direction (such as length). It should be noted that the similarity ratio is the similarity ratio required to prepare the rock stratum sample according to the similarity principle.

[0072] S102. Based on the working face length, rock layer thickness and sample size settings, prepare rock layer samples of the collapse zone;

[0073] Specifically, the present invention can prepare rock strata samples corresponding to the above-mentioned working face length, rock strata thickness of the collapse zone, and sample size setting information according to the similarity principle.

[0074] Specifically, when the caving zone consists of multiple rock layers, the present invention can prepare rock layer samples for each rock layer separately.

[0075] Optionally, when the sample size setting information includes a similarity ratio, the present invention can determine the sample length by multiplying the working face length and the similarity ratio, and determine the sample thickness by multiplying the rock layer thickness of the collapse zone and the similarity ratio, and prepare the corresponding rock layer sample based on the sample length and the sample thickness.

[0076] Optionally, when the sample size setting information includes a specified sample thickness, the present invention can determine the ratio of the sample thickness to the rock layer thickness of the collapse zone as a similarity ratio, and then determine the sample length by multiplying the working face length by the similarity ratio, and prepare the corresponding rock layer sample based on the sample length and the sample thickness.

[0077] When the caving zone includes multiple rock layers, the sample size setting information can include the sample thickness of a specified rock layer, the similarity ratio is determined by the ratio of the sample thickness to the rock layer thickness, and the sample thickness of other rock layers is determined based on the similarity ratio, the working face length, and the rock layer thickness of other rock layers.

[0078] Optionally, the sample size setting information can also be information used to indicate the preparation of rock stratum samples according to the working face length and rock stratum thickness. In this case, the similarity ratio is 1, and the present invention can directly prepare rock stratum samples with corresponding size parameters according to the working face length and rock stratum thickness.

[0079] It should be noted that the present invention can directly prepare rock strata samples from the caving zone strata; when direct preparation is difficult, the present invention can first test the physical and mechanical parameters of the caving zone strata in the laboratory, and then prepare rock strata samples from the caving zone strata using other materials and following similar principles.

[0080] S103. Conduct mining-induced overburden collapse tests on rock strata samples to obtain the fragmented and swollen rock mass of the rock strata samples;

[0081] Among them, the mining-induced overburden collapse test can be used to simulate the collapse zone rock strata falling from a certain height to the bottom plate of the longwall face under the action of mining.

[0082] Specifically, after obtaining a rock stratum sample from the caving zone, the present invention can conduct a mining-induced overburden caving test on the rock stratum sample to obtain the fragmented and swollen rock mass generated by the rock stratum sample in the mining-induced overburden caving test.

[0083] In the present invention, when conducting mining-induced overburden collapse tests, the test environment can be simulated according to the actual environment of the mining area. For example, the same environmental parameters such as temperature, humidity and wind speed can be set, and the rock strata samples can be tested in the test environment.

[0084] It should be noted that the drop height of the rock stratum sample set in the mining-induced overburden collapse test of this invention can be determined by technical personnel according to actual needs and actual conditions, or it can be determined according to the principle of similarity and the actual height of the rock stratum.

[0085] Specifically, when the caving zone includes multiple rock layers, the present invention can conduct mining-induced overburden caving tests on rock samples of each rock layer to obtain the fragmented and swollen rock mass generated by the rock samples of each rock layer in the mining-induced overburden caving test.

[0086] S104. Obtain a target image including the fragmented rock mass by photographing the fragmented rock mass;

[0087] The target image is an image containing the breccia mass obtained by photographing the breccia mass.

[0088] Specifically, the present invention can use a camera to photograph the fragmented rock mass to obtain a target image.

[0089] Specifically, the present invention can first flatten the swelled rock mass, and then use a camera to photograph the flattened swelled rock mass to increase the photographed area of ​​the swelled rock mass. This is beneficial for subsequent detection of the contour of the swelled rock mass in the target image, enabling the detection of more comprehensive contour coordinate information of the swelled rock mass, thereby obtaining more comprehensive size feature information of the swelled rock mass and further improving the accuracy of obtaining its size feature information.

[0090] S105. Perform contour detection on the target image to obtain contour coordinate information;

[0091] Specifically, this invention performs contour detection on the target image of the fractured and swollen rock mass to obtain the corresponding contour detection results.

[0092] The contour detection results can include the contour detection results of the brecciated rock masses corresponding to each rock layer in the caving zone.

[0093] Specifically, the contour detection results can include the contour detection results of brecciated rock masses of different grain sizes in different rock strata.

[0094] Among them, the contour coordinate information is the coordinate information corresponding to the contour detection result in the target image.

[0095] Optionally, the present invention can use a concave rock mass contour detection algorithm to detect the contour of the target image and obtain the corresponding contour detection result. Then, the contour coordinate information corresponding to the contour detection result can be determined in the target image.

[0096] Optionally, the present invention can utilize the input of the target image into a trained concave rock mass contour detection model to obtain the contour detection result output by the concave rock mass contour detection model, and then obtain the contour coordinate information corresponding to the contour detection result in the target image.

[0097] S106. Based on the contour coordinate information, obtain the size characteristic information of the fractured and swollen rock mass.

[0098] Specifically, after obtaining the contour coordinate information, the present invention can determine the size characteristics of the fragmented rock mass based on the contour coordinate information.

[0099] Optionally, step S106 may include:

[0100] Based on the contour coordinate information, the grain size distribution information of the second brecciated rock mass is determined; wherein, the second brecciated rock mass is the brecciated rock mass in the target image;

[0101] Particle size distribution information is determined as size characteristic information.

[0102] It is understandable that the contour coordinate information is the same as the contour coordinate information of the second brecciated rock mass.

[0103] Specifically, after obtaining the contour coordinate information, the present invention can determine the grain size of the second brecciated rock mass based on the contour coordinate information, and obtain the grain size distribution information of the second brecciated rock mass.

[0104] It is understood that the present invention can regard the dimensional characteristics of the second brecciated rock mass as the dimensional characteristics of the entire brecciated rock mass. In this case, the grain size distribution information of the second brecciated rock mass can be regarded as the dimensional characteristics of the entire brecciated rock mass.

[0105] Optionally, determining the grain size distribution information of the second brecciated rock mass based on the contour coordinate information may include:

[0106] Based on the contour coordinate information, the grain size distribution range of the second brecciated rock mass was determined;

[0107] The number of second-stage brecciated rock masses whose grain size falls within the grain size distribution range is determined as the total number of rock masses;

[0108] The particle size distribution range is divided into the first sub-range according to the preset sub-range length;

[0109] The number of second fragmented and bulging rock masses with grain size within the first sub-interval is determined as the number of rock masses in the sub-interval.

[0110] Determine the ratio of the number of rock masses in a sub-interval to the total number of rock masses;

[0111] The particle size distribution range and ratio are defined as particle size distribution information.

[0112] Specifically, the present invention can determine the grain size of the second brecciated rock mass based on contour coordinate information, thereby determining the grain size distribution range of the second brecciated rock mass.

[0113] Specifically, after obtaining the contour coordinate information, the present invention can calculate the displayed grain size of different rock layers and different grain sizes of the second brecciated rock mass in the target image based on the contour coordinate information, and then calculate the grain size of the second brecciated rock mass based on the image scale and the displayed grain size, thereby obtaining the grain size distribution range of the second brecciated rock mass.

[0114] Specifically, the present invention can determine the number of second brecciated rock masses whose grain size falls within the grain size distribution range in the target image based on contour coordinate information.

[0115] The length of the sub-interval can be determined by technicians according to actual needs, and this invention does not limit it.

[0116] The first sub-interval can include various sub-intervals that are divided by averaging the particle size distribution interval. For example, when the particle size distribution interval is [10,100] and the sub-interval length is 10, the first sub-interval can include [10,20], (20,30], (30,40], (40,50], (50,60], (60,70], (70,80], (80,90] and (90,100).

[0117] The number of rock masses in a sub-interval can include the number of rock masses in each sub-interval.

[0118] Specifically, this invention can determine the ratio of the number of rock masses in each sub-interval to the total number of rock masses as the ratio of the number of rock masses in the sub-interval to the total number of rock masses. It is understood that this invention can determine the grain size distribution range of the second fragmented rock mass and this ratio as the aforementioned size characteristic information.

[0119] It should be noted that the present invention is achieved through... Figure 1 In steps S101, S102, S103, S104, S105, and S106, rock strata samples that meet the experimental requirements can be prepared. By simulating mining-induced overburden collapse, mining-induced overburden collapse tests are conducted on the rock strata samples to obtain the corresponding fragmented rock mass. Then, image processing technology is used to obtain the dimensional characteristic information of the fragmented rock mass. The dimensional characteristic information of the fragmented rock mass can be obtained under simulated mining-induced overburden collapse, which effectively improves the accuracy and efficiency of obtaining dimensional characteristic information and effectively realizes the acquisition of dimensional characteristic information of the fragmented rock mass.

[0120] The proposed method for processing boulded rock masses allows for the determination of the working face length, stratum thickness in the caving zone, and sample size settings. Based on these settings, a stratum sample is prepared. A mining-induced overburden caving test is then conducted on the sample to obtain the boulded rock mass. A target image containing the boulded rock mass is captured by photographing the sample. The contour of the boulded rock mass is detected using the target image to obtain contour coordinate information. Finally, the dimensional characteristics of the boulded rock mass are obtained based on the contour coordinate information. This invention can prepare stratum samples that meet experimental requirements. By simulating mining-induced overburden caving, a mining-induced overburden caving test is conducted on the stratum samples to obtain the corresponding boulded rock mass. Image processing technology is then used to obtain the dimensional characteristics of the boulded rock mass. This method effectively improves the accuracy and efficiency of obtaining dimensional characteristics under simulated mining-induced overburden caving, thus effectively achieving the acquisition of dimensional characteristics of boulded rock masses.

[0121] based on Figure 1This invention proposes a second method for treating fragmented and distended rock masses, wherein the sample size setting information includes the sample length and sample width; in this case, step S102 may include the following steps:

[0122] S1021. The ratio of the sample length to the working surface length is determined as the similarity ratio;

[0123] It should be noted that the sample length and sample width can be specified by the staff according to actual needs and circumstances.

[0124] The sample width can be the dimension in the advancing direction of mineral mining in the longwall face.

[0125] S1022. The product of the similarity ratio and the rock layer thickness is determined as the sample thickness;

[0126] Specifically, after obtaining the similarity ratio, the present invention can determine the sample thickness of the rock stratum sample according to the principle of similarity.

[0127] S1023. Prepare rock stratum samples according to the sample length, sample width and sample thickness.

[0128] Specifically, this invention can prepare a rock stratum sample with the same length, width, and thickness as the original sample after obtaining the sample length, width, and thickness. It is understood that the rock stratum sample can be cuboid in shape.

[0129] It should be noted that the present invention prepares rock strata samples based on the principle of similarity, which can effectively improve the accuracy of rock strata samples in characterizing actual rock strata, thereby improving the accuracy of subsequent tests and the accuracy of obtaining information on the size characteristics of fractured and distended rock masses.

[0130] The proposed method for processing shattered rock masses uses a similarity principle to prepare rock strata samples, which can effectively improve the accuracy of using rock strata samples to characterize actual rock strata, thereby improving the accuracy of subsequent tests and the accuracy of obtaining dimensional characteristic information of shattered rock masses.

[0131] based on Figure 1 This invention proposes a third method for processing fragmented and distended rock masses. In this method, when the sample size setting information includes a similarity ratio, step S103 may include the following steps:

[0132] S1031. Determine the vertical distance between the caving zone strata and the bottom plate of the longwall face;

[0133] Specifically, when the caving zone includes multiple rock layers distributed sequentially in the vertical direction, the present invention can determine the vertical distance between each rock layer and the bottom plate of the mining face.

[0134] S1032. The product of the vertical distance and the similarity ratio is determined as the test height;

[0135] The test height refers to the drop height used in the mining-induced overburden collapse test of the rock strata sample in the collapse zone.

[0136] Specifically, when the caving zone includes multiple rock layers distributed sequentially in the vertical direction, the present invention can multiply the vertical distance corresponding to each rock layer by the similarity ratio to obtain the test height corresponding to each rock layer, that is, the test height of the rock layer sample of each rock layer.

[0137] S1033. Conduct a free-fall test on the rock stratum sample according to the test height to obtain the fragmented rock mass.

[0138] Specifically, when the caving zone includes multiple rock layers distributed vertically in sequence, the present invention can conduct free fall tests on the rock layer samples of each rock layer according to the test height corresponding to each rock layer sample, and obtain the fragmented rock mass of each rock layer sample.

[0139] It should be noted that the present invention can determine the test height of the rock stratum sample by following the principle of similarity, and conduct a free fall test on the rock stratum sample according to the test height to carry out the mining-induced overburden collapse test, simulate the real mining-induced overburden collapse scenario, effectively improve the authenticity of the test and the accuracy of the data, thereby effectively improving the accuracy of the obtained information on the size characteristics of the fragmented rock mass.

[0140] The proposed method for treating fragmented and distended rock masses can determine the test height of rock strata samples by following the principle of similarity, and conduct free-fall tests on the rock strata samples according to the test height to carry out mining-induced overburden collapse tests, simulating real mining-induced overburden collapse scenarios, effectively improving the authenticity of the test and the accuracy of the data, thereby effectively improving the accuracy of the obtained fragmented and distended rock mass size characteristic information.

[0141] based on Figure 1 This invention proposes a fourth method for treating fragmented and distended rock masses. In this method, step S104 may include steps S1041 and S1042, wherein:

[0142] S1041. Spread the shattered rock mass flat into a transparent cylinder with an inner diameter of a predefined length; wherein, the predefined length is the length of the rock sample.

[0143] Specifically, the transparent cylinder can be a transparent plastic cylinder or a transparent cylinder made of other types of materials.

[0144] Specifically, in accordance with the principle of similarity, this invention prepares a transparent cylinder with an inner diameter equal to the length of the rock sample, and lays the fragmented rock mass flat inside the transparent cylinder.

[0145] S1042. Obtain the target image by taking a frontal shot of the transparent cylinder.

[0146] Specifically, the present invention can obtain a target image by taking a frontal photograph of a transparent cylinder, that is, by taking a photograph directly facing the outer surface of the transparent cylinder.

[0147] Optionally, in the fifth method for treating shattered rock masses proposed in this invention, when the caving zone comprises multiple rock layers, step S1041 may include:

[0148] Determine the distribution order of each rock stratum in the caving zone;

[0149] According to the distribution order, the brecciated rock masses corresponding to each rock layer are laid flat in the transparent cylinder.

[0150] Specifically, when the caving zone comprises multiple rock strata in the vertical direction, this invention can determine the distribution order of each rock strata in the vertical direction of the caving zone. Then, according to the distribution order, the corresponding fragmented rock masses of each rock stratum can be laid flat in a transparent cylinder. For example, when the caving zone consists of a first rock stratum and a second rock stratum distributed sequentially from bottom to top, this invention can first lay the fragmented rock masses of the first rock stratum flat in a transparent cylinder, and then lay the fragmented rock masses of the second rock stratum flat on top of the already laid fragmented rock masses of the first rock stratum.

[0151] In the process of paving, the present invention can follow the steps of "filling-compressing-cleaning-filling again" to pave the boulders corresponding to each rock layer. That is, after paving the boulders corresponding to one rock layer, it is compressed and cleaned, and then the boulders corresponding to the next rock layer are paved. This effectively takes into account the scenario of rock layer collapse-bumping-compaction during actual mining and ensures the accuracy of the test results.

[0152] Optionally, in the fifth method for processing fragmented and distended rock masses described above, after obtaining the target image by photographing a transparent cylinder from the front, the method may further include:

[0153] According to the distribution order, the brecciated rock masses corresponding to each rock layer are laid flat in a rigid cylinder with a predefined inner diameter;

[0154] Using a rock mechanics servo testing machine, a crushed rock compression test was conducted on the fragmented rock mass corresponding to each rock layer in a rigid cylinder to obtain the stress-strain curve of the rock mass.

[0155] Among them, the rigid cylinder can be a cylinder with a certain hardness that can withstand the pressure of the crushed stone compression test, such as a steel cylinder.

[0156] Specifically, the present invention can lay the breccia rock masses corresponding to each rock layer in a rigid cylinder in the same laying order and manner as in a transparent cylinder; then, the present invention can control a rock mechanics servo testing machine to conduct a crushed stone compression test on the breccia rock masses corresponding to each rock layer in the rigid cylinder to obtain the corresponding rock mass stress-strain curves.

[0157] It should be noted that this invention can obtain corresponding dimensional characteristics of fragmented and dilated rock masses and stress-strain curves in transparent and rigid cylinders, both with inner diameters of the aforementioned predefined lengths. In this case, the invention can construct a constitutive model of the overburden rock in the longwall mining face based on the dimensional characteristics of the fragmented and dilated rock mass and the stress-strain curves. A longwall working face model can be established in the software to simulate the entire mining process, further analyzing the stress, deformation, and failure patterns of the surrounding rock. This makes the model in the laboratory rock compression test and the synthetic rock mass in the numerical software more closely resemble the actual overburden state of the goaf, improving the accuracy of the analysis of the rock mass mechanical properties in the goaf. It enables the simulation of the entire longwall mining process through numerical experiments, analyzing the three-dimensional spatiotemporal evolution of the surrounding rock over the entire cycle, and further analyzing the stability of the surrounding rock in complex and difficult roadways, exploring control technologies.

[0158] The proposed method for processing fragmented and distended rock masses allows for the acquisition of corresponding dimensional characteristics and stress-strain curves of the rock mass within both transparent and rigid cylinders of predefined inner diameters. Based on these dimensional characteristics and stress-strain curves, the invention can construct a constitutive model of the overlying rock in the longwall mining face, establish a longwall working face model in software, simulate the entire mining process, and further analyze the surrounding rock stress and deformation / failure patterns.

[0159] based on Figure 1 This invention proposes a sixth method for treating shattered and distended rock masses. In this method, step S105 may include:

[0160] The target image is input into the trained concave rock mass contour detection model to obtain the contour detection result output by the concave rock mass contour detection model; wherein, the concave rock mass contour detection model is obtained by using the image including the first concave rock mass as the training sample and training the pre-trained image contour detection model with the training sample;

[0161] The coordinate information corresponding to the contour detection result is determined as the contour coordinate information.

[0162] The first breccia mass can be a breccia mass that has collapsed due to mining-induced overburden action at the mining site. It should be noted that the first breccia mass can include breccia masses of different rock types and different grain sizes.

[0163] Specifically, this invention can obtain multiple images including a first dilatant rock mass, use each image as a training sample to train a pre-trained image contour detection model, and obtain a dilatant rock mass contour detection model with the ability to detect the contour of dilatant rock masses in images. Furthermore, this invention can determine the dilatant rock mass contour detection model as a trained model once it meets the training requirements.

[0164] Specifically, the present invention can input the target image into a trained concave rock mass contour detection model to obtain the contour detection result output by the concave rock mass contour detection model, and then determine the contour coordinate information corresponding to the contour detection result in the target image.

[0165] It should be noted that the present invention obtains contour coordinate information by using a fractured and dilated rock mass contour detection model, which can effectively improve image processing efficiency and coordinate information acquisition efficiency, and can effectively ensure the accuracy of contour coordinate information.

[0166] Specifically, the present invention can determine the coordinate information corresponding to the contour detection result in the target image, and the coordinate information is determined as the contour coordinate information.

[0167] The proposed method for processing fragmented and dilatant rock masses can obtain contour coordinate information through a fragmented and dilatant rock mass contour detection model, which can effectively improve image processing efficiency and coordinate information acquisition efficiency, and effectively ensure the accuracy of contour coordinate information.

[0168] To better illustrate the method for treating shattered rock masses proposed in this invention, Example 1 is provided, and the method for treating shattered rock masses is introduced in conjunction with Example 1.

[0169] Example 1, such as Figure 2 As shown, through in-situ testing, theoretical analysis, and in conjunction with mine production geological data, relevant information about the longwall face was determined: the working face length L, the total thickness Hc of the caving zone strata, and the presence of several strata (1, 2, and 3) within the caving zone. The thickness of stratum 1 is H1, and its height from the coal seam floor (i.e., the height from the longwall face floor) is S1; the thickness of stratum 2 is H2, and its height from the coal seam floor is S2; the thickness of stratum 3 is H3, and its height from the coal seam floor is S3; the sample size settings include the specified sample length l and sample width 1m.

[0170] Specifically, this invention can calculate the similarity ratio between the sample length l and the working surface length L, and determine the sample thickness of rock layer 1 by multiplying the rock layer thickness H1 of rock layer 1 by the similarity ratio h1, the sample thickness of rock layer 2 by multiplying the rock layer thickness H2 of rock layer 2 by the similarity ratio h2, and the sample thickness of rock layer 3 by multiplying the rock layer thickness H3 of rock layer 3 by the similarity ratio h3. This invention prepares rock layer samples 1, 2, and 3 for rock layers 1, 2, and 3 respectively, according to the sample length, sample width, and sample thickness of each rock layer; wherein the length, width, and thickness of rock layer sample 1 are l, 1, and h1, respectively; the length, width, and thickness of rock layer sample 2 are l, 1, and h2, respectively; and the length, width, and thickness of rock layer sample 3 are l, 1, and h3, respectively.

[0171] Specifically, the present invention can determine the test height of rock stratum sample 1 by multiplying S1 by the similarity ratio (s1), the test height of rock stratum sample 2 by multiplying S2 by the similarity ratio (s2), and the test height of rock stratum sample 3 by multiplying S3 by the similarity ratio (s3).

[0172] Specifically, such as Figure 3 As shown, this invention allows rock sample 1 (i.e., specimen 1) to be placed at height s1 for a free-fall test to obtain the fragmented rock mass of rock sample 1; as Figure 4 As shown, rock sample 2 (i.e., specimen 2) was placed at height s2 for a free fall test to obtain the fragmented rock mass of rock sample 2; as Figure 5 As shown, rock sample 3 (i.e. specimen 3) was placed at height s3 for a free fall test to obtain the fragmented rock mass of rock sample 3;

[0173] Specifically, the present invention can follow the steps of filling, compressing, cleaning, and filling again, and the fragmented rock masses of rock layer sample 1, rock layer sample 2, and rock layer sample 3 are laid flat in a transparent plastic cylinder with an inner diameter of l in sequence from bottom to top;

[0174] Specifically, such as Figure 6 As shown, this invention can take a frontal photograph of a transparent plastic cylinder to obtain a target image of a fragmented rock mass containing samples of various rock layers; perform contour detection on the target image to obtain contour coordinate information; and obtain dimensional characteristic information of the fragmented rock mass based on the contour coordinate information; subsequently, this invention can replace the transparent plastic cylinder with a steel barrel of the same size and use it in conjunction with a compression piston to conduct a rock compression test using a rock mechanics servo testing machine to obtain the stress-strain curve of the rock mass in the goaf.

[0175] The following describes the device for treating shattered rock mass provided by the present invention. The device for treating shattered rock mass described below can be referred to in correspondence with the method for treating shattered rock mass described above.

[0176] like Figure 7As shown, the present invention proposes a device for processing shattered rock mass, comprising: a first determining unit 701, a first preparing unit 702, a first obtaining unit 703, a second obtaining unit 704, a third obtaining unit 705 and a fourth obtaining unit 706;

[0177] The first determining unit 701 is used to determine the working face length of the longwall face, the rock stratum thickness of the caving zone, and the sample size setting information.

[0178] The first preparation unit 702 is used to prepare rock strata samples of the collapse zone based on the setting information of working face length, rock stratum thickness and sample size.

[0179] The first obtaining unit 703 is used to conduct mining-induced overburden collapse tests on rock strata samples to obtain the fragmented and swollen rock mass of the rock strata samples.

[0180] The second acquisition unit 704 is used to acquire a target image including the shattered rock mass by photographing the shattered rock mass;

[0181] The third acquisition unit 705 is used to perform contour detection of the fractured rock mass in the target image and obtain contour coordinate information.

[0182] The fourth acquisition unit 706 is used to obtain the size characteristic information of the fragmented rock mass based on the contour coordinate information.

[0183] It should be noted that the specific processing procedures and their technical effects for the first determining unit 701, the first preparing unit 702, the first obtaining unit 703, the second obtaining unit 704, the third obtaining unit 705, and the fourth obtaining unit 706 can be referred to the present invention regarding... Figure 1 The relevant explanations of steps S101 to S106 will not be repeated here.

[0184] Optionally, the sample size setting information includes the sample length and sample width; the first preparation unit 702 includes: a second determining unit, a third determining unit, and a second preparation unit;

[0185] The second determining unit is used to determine the ratio of the sample length to the working surface length as the similarity ratio;

[0186] The third determining unit is used to determine the sample thickness by multiplying the similarity ratio by the rock layer thickness.

[0187] The second preparation unit is used to prepare rock stratum samples according to the sample length, sample width and sample thickness.

[0188] Optionally, when the sample size setting information includes a similarity ratio, the first obtaining unit 703 includes: a fourth determining unit, a fifth determining unit, and a fifth obtaining unit;

[0189] The fourth determining unit is used to determine the vertical distance between the caving zone strata and the bottom plate of the longwall face;

[0190] The fifth determining unit is used to determine the test height by multiplying the vertical distance by the similarity ratio;

[0191] The fifth obtaining unit is used to conduct free-fall tests on rock strata samples according to the test height to obtain fragmented and distended rock masses.

[0192] Optionally, the second obtaining unit 704 includes: a first tiling unit and a sixth obtaining unit;

[0193] The first tiling unit is used to lay the shattered rock mass into a transparent cylinder with a predefined inner diameter; wherein, the predefined length is the length of the rock sample.

[0194] The sixth acquisition unit is used to obtain a target image by photographing the transparent cylinder from the front.

[0195] Optionally, when the caving zone comprises multiple strata; the first tiling unit includes: a sixth defining unit and a second tiling unit;

[0196] The sixth determining unit is used to determine the distribution order of each rock layer in the caving zone;

[0197] The second tiling unit is used to lay the brecciated rock masses corresponding to each rock layer in a transparent cylinder according to the distribution order.

[0198] Optionally, the fragmented rock mass treatment device also includes: a third tiling unit and a seventh obtaining unit;

[0199] The third tiling unit is used to lay the breccia and bulging rock masses corresponding to each rock layer in a rigid cylinder with a predefined inner diameter after obtaining the target image by shooting the transparent cylinder from the front, according to the distribution order.

[0200] The seventh unit is used to conduct crushed rock compression tests on the fragmented rock mass corresponding to each rock layer in the rigid cylinder using a rock mechanics servo testing machine, and to obtain the stress-strain curve of the rock mass.

[0201] Optionally, the third obtaining unit 705 includes: an input unit, an eighth obtaining unit, and a seventh determining unit;

[0202] The input unit is used to input the target image into the trained fracturing rock mass contour detection model; wherein, the fracturing rock mass contour detection model is obtained by using the image including the first fracturing rock mass as training sample to train the pre-trained image contour detection model;

[0203] The eighth acquisition unit is used to obtain the contour detection results output by the contour detection model of the fractured and swollen rock mass;

[0204] The seventh determining unit is used to determine the coordinate information corresponding to the contour detection result as contour coordinate information.

[0205] Optionally, the fourth obtaining unit 706 includes: an eighth determining unit and a ninth determining unit; wherein:

[0206] The eighth determining unit is used to determine the grain size distribution information of the second brecciated rock mass based on the contour coordinate information; wherein, the second brecciated rock mass is the brecciated rock mass in the target image;

[0207] The ninth determining unit is used to determine the particle size distribution information as size characteristic information.

[0208] Optionally, the eighth determining unit includes: an interval determining unit, a first quantity determining unit, a division unit, a second quantity determining unit, a ratio determining unit, and an information determining unit;

[0209] The interval determination unit is used to determine the grain size distribution interval of the second brecciated rock mass based on the contour coordinate information;

[0210] The first quantity determination unit is used to determine the number of second fragmented rock masses whose particle size is within the particle size distribution range as the total number of rock masses;

[0211] The dividing unit is used to divide the particle size distribution range into the first sub-interval on an average basis according to the preset sub-interval length;

[0212] The second quantity determination unit is used to determine the quantity of the second brecciated rock mass with a particle size within the first sub-interval as the quantity of rock mass in the sub-interval.

[0213] The ratio determination unit is used to determine the ratio of the number of rock masses in a sub-interval to the total number of rock masses;

[0214] The information determination unit is used to determine the particle size distribution range and ratio as particle size distribution information.

[0215] The proposed device for processing boulders in rock mass can determine the working face length, stratum thickness of the caving zone, and sample size settings of the longwall face; based on these settings, it prepares stratum samples of the caving zone; conducts mining-induced overburden caving tests on the samples to obtain the boulders in the rock mass; captures images of the boulders to obtain target images; performs contour detection on the target images to obtain contour coordinate information; and obtains the dimensional characteristics of the boulders based on the contour coordinate information. This invention can prepare rock samples that meet experimental requirements, conduct mining-induced overburden caving tests on the samples to obtain the corresponding boulders, and then use image processing technology to obtain the dimensional characteristics of the boulders. This allows for the acquisition of dimensional characteristics of the boulders under simulated mining-induced overburden caving, effectively improving the accuracy and efficiency of dimensional characteristic information acquisition and achieving effective acquisition of dimensional characteristics of boulders.

[0216] Figure 8 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 8 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 logical instructions in the memory 830 to execute a method for processing fragmented rock masses, the method including:

[0217] Determine the working face length, stratum thickness of the caving zone, and sample size settings for the longwall mining face;

[0218] Based on the working face length, rock layer thickness and sample size settings, rock layer samples of the collapse zone were prepared.

[0219] Mining-induced overburden collapse tests were conducted on the rock strata samples to obtain the fragmented and swollen rock mass of the rock strata samples;

[0220] By photographing the fragmented rock mass, a target image including the fragmented rock mass can be obtained;

[0221] The contour of the fragmented rock mass is detected in the target image to obtain contour coordinate information;

[0222] Based on the contour coordinate information, the size characteristics of the fragmented rock mass are obtained.

[0223] 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 the present invention, 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 of the various embodiments of the present invention. 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.

[0224] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to perform the methods for processing fragmented and distended rock masses provided by the above methods, the method comprising:

[0225] Determine the working face length, stratum thickness of the caving zone, and sample size settings for the longwall mining face;

[0226] Based on the working face length, rock layer thickness and sample size settings, rock layer samples of the collapse zone were prepared.

[0227] Mining-induced overburden collapse tests were conducted on the rock strata samples to obtain the fragmented and swollen rock mass of the rock strata samples;

[0228] By photographing the fragmented rock mass, a target image including the fragmented rock mass can be obtained;

[0229] The contour of the fragmented rock mass is detected in the target image to obtain contour coordinate information;

[0230] Based on the contour coordinate information, the size characteristics of the fragmented rock mass are obtained.

[0231] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the methods for processing fragmented and distended rock masses provided by the methods described above, the method comprising:

[0232] Determine the working face length, stratum thickness of the caving zone, and sample size settings for the longwall mining face;

[0233] Based on the working face length, rock layer thickness and sample size settings, rock layer samples of the collapse zone were prepared.

[0234] Mining-induced overburden collapse tests were conducted on the rock strata samples to obtain the fragmented and swollen rock mass of the rock strata samples;

[0235] By photographing the fragmented rock mass, a target image including the fragmented rock mass can be obtained;

[0236] The contour of the fragmented rock mass is detected in the target image to obtain contour coordinate information;

[0237] Based on the contour coordinate information, the size characteristics of the fragmented rock mass are obtained.

[0238] 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.

[0239] 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.

[0240] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these 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 the present invention.

Claims

1. A method for treating fragmented and distended rock masses, characterized in that, include: Determine the working face length, stratum thickness of the caving zone, and sample size settings for the longwall mining face; Based on the working face length, the rock layer thickness, and the sample size setting information, a rock layer sample of the collapse zone rock layer is prepared. The rock strata sample was subjected to a mining-induced overburden collapse test to obtain the fragmented and swollen rock mass of the rock strata sample; By photographing the shattered rock mass, a target image including the shattered rock mass is obtained; The target image is subjected to contour detection of the fragmented rock mass to obtain contour coordinate information; Based on the contour coordinate information, the dimensional characteristic information of the fragmented rock mass is obtained; The step of obtaining a target image including the shattered rock mass by photographing the shattered rock mass includes: The shattered rock mass is laid flat into a transparent cylinder with an inner diameter of a predefined length; wherein, the predefined length is the length of the rock sample. The target image is obtained by photographing the transparent cylinder from the front. When the caving zone comprises multiple rock layers, the step of spreading the shattered rock mass into a transparent cylinder with a predefined inner diameter includes: Determine the distribution order of each of the aforementioned rock strata in the caving zone; According to the distribution order, the brecciated rock masses corresponding to each of the rock layers are laid flat in the transparent cylinder.

2. The method for treating fragmented and swollen rock mass according to claim 1, characterized in that, The sample size setting information includes the sample length and sample width; the preparation of rock strata samples of the caving zone based on the working face length, the rock strata thickness, and the sample size setting information includes: The ratio of the sample length to the working surface length is determined as the similarity ratio; The product of the similarity ratio and the rock layer thickness is determined as the sample thickness; The rock stratum sample is prepared according to the sample length, the sample width, and the sample thickness.

3. The method for treating fragmented and swollen rock mass according to claim 1, characterized in that, When the sample size setting information includes a similarity ratio, the step of conducting a mining-induced overburden collapse test on the rock strata sample to obtain the fragmented rock mass of the rock strata sample includes: Determine the vertical distance between the caving zone strata and the bottom plate of the mining face; The product of the vertical distance and the similarity ratio is determined as the test height; The rock sample was subjected to a free-fall test at the specified test height to obtain the fragmented rock mass.

4. The method for treating fragmented and swollen rock mass according to claim 1, characterized in that, After obtaining the target image by photographing the transparent cylinder from the front, the method for processing the fragmented rock mass further includes: According to the distribution order, the brecciated rock mass corresponding to each of the rock layers is laid flat in a rigid cylinder with an inner diameter of the predefined length; Using a rock mechanics servo testing machine, a crushed rock compression test was conducted on the crushed rock mass corresponding to each of the rock layers in the rigid cylinder to obtain the rock mass stress-strain curve.

5. The method for treating fragmented and swollen rock mass according to claim 1, characterized in that, The step of detecting the contour of the fractured rock mass in the target image to obtain contour coordinate information includes: The target image is input into the trained fracturing rock mass contour detection model to obtain the contour detection result output by the fracturing rock mass contour detection model; wherein, the fracturing rock mass contour detection model is obtained by using an image including the first fracturing rock mass as a training sample to train a pre-trained image contour detection model; The coordinate information corresponding to the contour detection result is determined as the contour coordinate information.

6. The method for treating fragmented and swollen rock mass according to claim 1, characterized in that, The step of obtaining the size characteristic information of the brecciated rock mass based on the contour coordinate information includes: Based on the contour coordinate information, the grain size distribution information of the second breccia rock mass is determined; wherein, the second breccia rock mass is the breccia rock mass in the target image; The particle size distribution information is determined as the size characteristic information.

7. The method for treating fragmented and distended rock mass according to claim 6, characterized in that, The determination of the grain size distribution information of the second brecciated rock mass based on the contour coordinate information includes: Based on the contour coordinate information, the grain size distribution range of the second brecciated rock mass is determined; The number of the second fragmented rock mass whose particle size falls within the particle size distribution range is determined as the total number of rock masses; The particle size distribution range is divided into a first sub-range according to a preset sub-range length; The number of the second fragmented rock mass whose particle size is within the first sub-interval is determined as the number of rock masses in the sub-interval; Determine the ratio of the number of rock masses in the sub-interval to the total number of rock masses; The particle size distribution range and the ratio are determined as the particle size distribution information.

8. A device for processing fractured and swollen rock masses, characterized in that, include: The unit comprises a first determining unit, a first preparing unit, a first obtaining unit, a second obtaining unit, a third obtaining unit, and a fourth obtaining unit; The first determining unit is used to determine the working face length of the longwall face, the rock stratum thickness of the caving zone, and the sample size setting information; The first preparation unit is used to prepare rock stratum samples of the collapse zone based on the working face length, the rock stratum thickness and the sample size setting information; The first obtaining unit is used to conduct a mining-induced overburden collapse test on the rock stratum sample to obtain the fragmented and swollen rock mass of the rock stratum sample; The second obtaining unit is used to obtain a target image including the shattered rock mass by photographing the shattered rock mass; The third obtaining unit is used to perform contour detection of the fractured rock mass in the target image and obtain contour coordinate information; The fourth obtaining unit is used to obtain the size characteristic information of the fragmented rock mass based on the contour coordinate information; The second obtaining unit includes: the first tiling unit and the sixth obtaining unit; The first tiling unit is used to lay the shattered rock mass into a transparent cylinder with a predefined inner diameter; wherein, the predefined length is the length of the rock sample. The sixth acquisition unit is used to obtain a target image by photographing the transparent cylinder from the front; When the caving zone consists of multiple rock layers, the first tiling unit includes: the sixth defining unit and the second tiling unit; The sixth determining unit is used to determine the distribution order of each rock layer in the caving zone; The second tiling unit is used to lay the brecciated rock masses corresponding to each rock layer in a transparent cylinder according to the distribution order.

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