Rock slope blasting protection method, device, equipment, medium and product

Abstract

The invention discloses a rock slope blasting protection method and device, equipment, a medium and a product, and relates to the field of slope blasting, the method comprises the steps that on the basis of site trial blasting, a trial blasting area parameter set is obtained, and the trial blasting area parameter set comprises a first parameter set and a second parameter set; establishing a blasting model based on the field trial explosion type of the trial explosion area and the corresponding blasting model parameter set; inputting the first parameter set into the blasting model to obtain a third parameter set; sequentially comparing parameter values in the second parameter set with parameter values in the third parameter set, and adjusting the blasting model parameter set based on a comparison result to obtain an optimized blasting model; inputting the fourth parameter set into the optimized blasting model to obtain a fifth parameter set; and based on the fifth parameter set, a rock slope blasting protection scheme is established, so that rock slope blasting protection is achieved. According to the method, the error and the uncertainty of artificially establishing rock slope blasting protection measures are reduced.

Description

Technical Field

[0001] The present application relates to the field of slope blasting, and in particular to a rock slope blasting protection method, device, equipment, medium and product. Background Art

[0002] Rock slope blasting refers to the use of explosives or other explosive materials to artificially cause rock to break and loosen in rock slope engineering, thereby achieving the purpose of excavation, leveling or stabilizing the slope. This technology is widely used in road construction, mining, water conservancy project construction and various infrastructure construction. In order to prevent the flying rocks generated during blasting from causing harm to the surrounding environment and personnel, protection is carried out before blasting, that is, by setting up reasonable protective barriers, reducing the generation and spread of flying rocks, thereby protecting the safety of surrounding buildings, equipment and personnel.

[0003] In the past, when blasting rock slopes, blasting protection measures were usually formulated manually based on specific geological conditions, rock types, slope height and other factors. However, this manual method often relies on the experience and judgment of engineers and lacks scientificity and accuracy. As a result, various unexpected situations may occur during the blasting process. Summary of the invention

[0004] The purpose of this application is to provide a rock slope blasting protection method, device, equipment, medium and product, which can reduce the errors and uncertainties of artificially established rock slope blasting protection measures.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a rock slope blasting protection method, comprising:

[0007] Based on the field test explosion, a test explosion area parameter set is obtained, wherein the test explosion area parameter set includes a first parameter set and a second parameter set, wherein the first parameter set includes rock physical parameters of the test explosion area, and the second parameter set includes flying rock parameters and flying rock physical parameters of the test explosion area;

[0008] Establishing a blasting model based on the type of field test explosion in the test explosion area and a corresponding blasting model parameter set;

[0009] Inputting the first parameter set into the blasting model, performing simulated blasting in the test blasting area, and obtaining a third parameter set, wherein the third parameter set includes simulated flying rock parameters and simulated flying rock physical parameters;

[0010] Comparing the parameter values ​​in the second parameter set and the third parameter set in sequence, and adjusting the blasting model parameter set based on the comparison result to obtain the optimized blasting model;

[0011] Inputting the fourth parameter set into the optimized blasting model, performing simulated blasting in the blasting area, and obtaining a fifth parameter set, wherein the fourth parameter set includes rock physical parameters in the blasting area;

[0012] Based on the fifth parameter set, a rock slope blasting protection scheme is established to achieve rock slope blasting protection, wherein the fifth parameter set includes optimizing flying rock parameters and optimizing flying rock physical parameters.

[0013] In a second aspect, the present application provides a rock slope blasting protection device, comprising:

[0014] An acquisition module, used for acquiring a test explosion zone parameter set based on a field test explosion, wherein the test explosion zone parameter set includes a first parameter set and a second parameter set, wherein the first parameter set includes rock physical parameters of the test explosion zone, and the second parameter set includes flying rock parameters and flying rock physical parameters of the test explosion zone;

[0015] A first establishing module is used to establish a blasting model based on the type of field test explosion in the test explosion area and a corresponding blasting model parameter set;

[0016] A first input module is used to input the first parameter set into the blasting model, perform simulated blasting in the test blasting area, and obtain a third parameter set, wherein the third parameter set includes simulated flying rock parameters and simulated flying rock physical parameters, and wherein the fourth parameter set includes rock physical parameters in the blasting area;

[0017] A comparison module, used for comparing the parameter values ​​in the second parameter set and the third parameter set in sequence, and adjusting the blasting model parameter set based on the comparison result to obtain the optimized blasting model;

[0018] A second input module is used to input the fourth parameter set into the optimized blasting model to obtain a fifth parameter set, wherein the fourth parameter set includes rock physical parameters of the blasting area;

[0019] The second establishing module is used to establish a rock slope blasting protection plan based on the fifth parameter set to achieve rock slope blasting protection, wherein the fifth parameter set includes optimizing flying rock parameters and optimizing flying rock physical parameters.

[0020] In a third aspect, the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of any one of the rock slope blasting protection methods described above.

[0021] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the rock slope blasting protection methods described above.

[0022] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of any one of the rock slope blasting protection methods described above.

[0023] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0024] The present application provides a method, device, equipment, medium and product for blasting protection of rock slopes. The method for blasting protection of rock slopes obtains a test explosion zone parameter set based on a field test explosion, and the test explosion zone parameter set includes a first parameter set and a second parameter set; a blasting model is established based on the type of field test explosion in the test explosion zone and the corresponding blasting model parameter set; the first parameter set is input into the blasting model to obtain a third parameter set; the second parameter set is compared with the parameter values ​​in the third parameter set in sequence, and the blasting model parameter set is adjusted based on the comparison result to obtain the optimized blasting model to ensure the accuracy and reliability of the model. The fourth parameter set is input into the optimized blasting model to obtain a fifth parameter set; based on the fifth parameter set, a rock slope blasting protection scheme is established to achieve rock slope blasting protection. The rock slope blasting protection method provided in this application, through the blasting model obtained by simulation and optimization using real data, can predict parameters consistent with the actual blasting scenario, thereby accurately predicting the blasting results, and formulating protection measures based on the blasting results, thereby improving the safety and reliability of rock slope blasting and reducing potential risks and losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is an application environment diagram of a rock slope blasting protection method in one embodiment of the present application;

[0027] Figure 2 A schematic diagram of a process flow of a rock slope blasting protection method provided in one embodiment of the present application;

[0028] Figure 3A geographical morphological characteristic map of the first blasting area of ​​a rock slope blasting protection method provided in one embodiment of the present application;

[0029] Figure 4 A geographical morphological characteristic map of a second blasting area of ​​a rock slope blasting protection method provided in one embodiment of the present application;

[0030] Figure 5 A geographical morphological characteristic map of the third blasting area of ​​a rock slope blasting protection method provided in one embodiment of the present application;

[0031] Figure 6 A schematic diagram of a slope structure of a rock slope blasting protection method provided in one embodiment of the present application;

[0032] Figure 7 A schematic diagram of the functional modules of a rock slope blasting protection device provided in one embodiment of the present application;

[0033] Figure 8 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] The rock slope blasting protection method provided in the embodiment of the present application can be applied to Figure 1In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be set up separately, integrated on the server 104, or placed on the cloud or other servers. The terminal 102 can send the test explosion area parameter set to be processed to the server 104. After the server 104 receives the test explosion area parameter set to be processed, for the test explosion area parameter set to be processed, the server 104 establishes a blasting model based on the type of field test explosion in the test explosion area and the corresponding blasting model parameter set; inputs the first parameter set into the blasting model to obtain a third parameter set; compares the second parameter set with the parameter values ​​in the third parameter set in turn, and adjusts the blasting model parameter set based on the comparison result to obtain the optimized blasting model; inputs the fourth parameter set into the optimized blasting model to obtain a fifth parameter set; and establishes a rock slope blasting protection plan based on the fifth parameter set. The server 104 can feedback the obtained rock slope blasting protection measures to the terminal 102. In addition, in some embodiments, the rock slope blasting protection method can also be implemented independently by the server 104 or the terminal 102. For example, the terminal 102 can directly process the test blasting area parameter set to be processed, or the server 104 can obtain the test blasting area parameter set to be processed from the data storage system, process the test blasting area parameter set to be processed and establish rock slope blasting protection measures.

[0037] The terminal 102 may be, but is not limited to, various desktop computers, laptop computers, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0038] In an exemplary embodiment, Figure 2 As shown, a rock slope blasting protection method is provided. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server 104 in the example is used as an example to illustrate the method, which includes the following steps S201 to S206. Among them:

[0039] In step S201, based on the field test explosion, a test explosion area parameter set is obtained, the test explosion area parameter set includes a first parameter set and a second parameter set, wherein the first parameter set includes rock physical parameters of the test explosion area, and the second parameter set includes flying rock parameters and flying rock physical parameters of the test explosion area.

[0040] In one embodiment, the types of field test explosions include pre-splitting blasting, deep hole step blasting, and shallow hole step blasting. In actual test explosion operations, according to the specific conditions of the blasting area, one of the above three types of blasting is selected for blasting, wherein pre-splitting blasting, deep hole step blasting, and shallow hole step blasting correspond to the first blasting area, the second blasting area, and the third blasting area, respectively, and the test explosion areas of the first blasting area, the second blasting area, and the third blasting area are respectively selected for field test explosions.

[0041] Specifically, pre-splitting blasting is to ensure the stability, smoothness and flatness of the slope after blasting, and to reduce the amount of slope finishing work. Therefore, the blasting area for pre-splitting blasting generally has hard rocks with obvious cracks or joints. A series of pre-drilled pre-splitting holes are arranged on the slope contour line of the main blasting area, and explosives are loaded in these holes for blasting to form a continuous crack, so as to accurately control the direction and range of rock fracture, thereby effectively preventing the damage to the slope structure caused by excessive vibration during the main blasting, and at the same time ensuring the quality of the slope surface. For example, if geological data shows that the rock is hard, cracks are developed, and the slope angle is large, such as 63°, pre-splitting blasting is given priority.

[0042] Deep hole step blasting is suitable for slopes with large heights, usually greater than 5 meters, requiring segmented blasting, and where the rock is relatively hard but cracks are not obvious. For example, if the step height is greater than 5 meters and geological data show that the rock is relatively hard but cracks are not obvious, deep hole step blasting is selected.

[0043] Shallow hole step blasting is suitable for slopes with small height, usually less than 5 meters, and soft or medium-hard rocks that are easy to break. If there are sensitive buildings around the blasting area, such as cemeteries and scenic spots, choose shallow hole step blasting with small vibrations and less damage to surrounding buildings. For example, if the step height is less than 5 meters, and geological data shows that the rock hardness is low, and there are scenic spots around, choose shallow hole step blasting.

[0044] It can be understood that when performing blasting operations, it is first necessary to understand the geographical features of the blasting area. In this application, three different blasting areas are selected, namely: the first blasting area, the second blasting area and the third blasting area. The geographical features of these three blasting areas are shown in Figure 3-5, and the first blasting area, the second blasting area and the third blasting area correspond to pre-splitting blasting, deep hole step blasting and shallow hole step blasting respectively. In the actual field test explosion process, it is not necessary to conduct a comprehensive test of the entire blasting area. A small area in the blasting area can be selected as the test explosion area. By conducting field test explosions in the selected test explosion area, a data basis is provided for the blasting protection of the entire blasting area, which can not only ensure the success rate of the formal blasting, but also minimize the impact on the surrounding environment and personnel safety. The first blasting area, the second blasting area and the third blasting area correspond to the first test explosion area, the second test explosion area and the third test explosion area respectively.

[0045] In one embodiment, the first parameter set includes rock physical parameters of the test explosion area, wherein the rock physical parameters of the test explosion area include compressive strength of the test explosion area, elastic modulus of the test explosion area, cohesion of the test explosion area, friction angle of the test explosion area and porosity of the test explosion area; the second parameter set includes flying parameters of flying rocks in the test explosion area and physical parameters of flying rocks in the test explosion area, wherein the flying parameters of flying rocks in the test explosion area include flying rock velocity in the test explosion area and flying rock range in the test explosion area, and the physical parameters of flying rocks in the test explosion area include flying rock particle size in the test explosion area and flying rock weight in the test explosion area.

[0046] Specifically, compressive strength indicates the maximum compressive stress that a rock can withstand, exceeding which the rock will break or shatter. Elastic modulus indicates the ability of a rock to resist deformation, and a high elastic modulus means that the rock is harder and less likely to deform or break under an explosion. Porosity indicates the proportion of void space in a rock, and rocks with high porosity are more easily destroyed during an explosion because the explosion gas can fill the voids and exert pressure. Cohesion indicates the bonding force between particles inside a rock, and the ability to maintain its structural integrity even without external pressure. Rocks with high cohesion are difficult to break during blasting because these rocks have strong internal connections and require more energy to overcome such connections; high cohesion may also lead to lower blasting efficiency, that is, in order to achieve the same crushing effect, more explosives or optimized layout settings may be required to increase the effective transfer of energy. The friction angle indicates the magnitude of the frictional resistance between rock particles. The larger the friction angle, the rougher the rock. Rocks with a larger friction angle have greater friction between their fragments or pieces under the action of the shock wave generated by the blast, thereby limiting the movement distance of the flying rocks.

[0047] In addition, test explosion rock physical parameters can also include density, Poisson's ratio, and tensile strength. Among them, density refers to the mass of rock per unit volume, which affects the propagation of explosion energy and the degree of rock fragmentation. Poisson's ratio refers to the ratio of lateral strain to longitudinal strain when rock is subjected to force. For test explosion, this can affect the direction and mode of crack development.

[0048] Before step S201, the rock slope blasting protection method further includes the following steps:

[0049] S10. Obtain geological data, topographic data and environmental data of the test explosion area.

[0050] The rock type refers to the type of rock and its physical characteristics, which can be obtained through geological exploration reports or on-site sampling and analysis. The specific content of the rock type includes the hardness, density, and degree of development of cracks in the rock. The rock structure involves the structural characteristics inside the rock, such as cracks, joints, and bedding, which can be obtained through technical means such as geological radar or seismic wave reflection.

[0051] Topographic data mainly includes two elements: the actual angle of the slope and the height of the steps. The actual angle of the slope can be accurately measured and obtained through unmanned aerial photography or laser scanning technology. The height of the steps can be determined through topographic maps and field measurement data.

[0052] Environmental data covers information about surrounding facilities related to the project and information about objects that need to be protected underground and in the air. Through geographic information systems (GIS) or satellite images, the location and distance of preset facilities can be identified and located. These preset facilities include but are not limited to high-voltage power lines, houses and buildings, road traffic, scenic spots, construction sites, etc. In addition, through underground line detectors and air traffic control data, further information about underground cables, pipelines, and flight routes can be obtained to ensure that these environmental factors are fully considered during geological exploration and engineering operations to avoid unnecessary impact and damage to surrounding facilities and the environment.

[0053] S11. Input geological data, topographic data and environmental data into the database.

[0054] S12. Analyze the geological data based on the rock mechanics model to obtain geological data analysis results.

[0055] Specifically, rock mechanics models are used to calculate parameters of different rock types, such as compressive strength and elastic modulus, and to evaluate the impact of the degree of fracture development on the blasting effect.

[0056] S13. Analyze the terrain data based on the three-dimensional slope model to obtain terrain data analysis results.

[0057] The 3D model of the slope is generated by 3D modeling software, the slope stability is calculated, and the angle and depth of the drilling are calculated based on the step height and slope angle.

[0058] S14. Analyze the environmental data based on the geographic information system to obtain environmental data analysis results.

[0059] A safety range map is drawn up through the geographic information system to determine the maximum range and impact area of ​​flying rocks, assess the impact of vibrations on surrounding buildings, and calculate the safety distance.

[0060] S15. Select the type of site test explosion based on the analysis results of geological data, terrain data and environmental data of the test explosion area.

[0061] For example, the expansion and reconstruction of National Highway A from Section B to Section C covers three main blasting areas, which are divided into the first blasting area, the second blasting area and the third blasting area. The geographical features of these three blasting areas can be found in Figure 3-5 .

[0062] The geographical location of the first blasting area is described as follows:

[0063] The rock is hard, with a slope angle of about 63°. East of the first blasting area: about 50 meters away from the nearest brick-concrete structure house, about 181 meters away from the D highway; west of the first blasting area: close to the mountain, the terrain is undulating, showing obvious uneven characteristics; south of the first blasting area: close to the construction site, various preparations are currently being carried out to ensure the smooth progress of the project; north of the first blasting area: about 31 meters away from the 10KV high-voltage line, these distances have been accurately measured; underground of the second blasting area: there are no important protection objects, because the national defense optical cable has been moved in advance to ensure the safety of underground facilities; above the second blasting area: there are also no important protection objects, providing sufficient space for the blasting project.

[0064] The geographical location of the second blasting area is described as follows:

[0065] The rock is relatively hard, with a slope height of about 9 meters. To the east of the second blasting area: it is adjacent to the construction site and is about 349 meters away from the D highway; to the west of the second blasting area: it is about 37 meters away from the flood control dam under construction, and it is necessary to ensure that there will be no impact on power facilities during the blasting project; to the south of the second blasting area: the construction site, where various preparatory work is currently underway to ensure the smooth progress of the project; to the north of the second blasting area: it is about 185 meters away from the 35KV high-voltage line; underground in the second blasting area: there are no important protected objects; above the second blasting area: there are no important protected objects.

[0066] The geographical location of the third blasting area is described as follows:

[0067] The rock is relatively soft, with a slope height of about 4 meters. To the east of the third blasting area: it is adjacent to the construction site and about 49 meters away from the flood control dam under construction; to the west of the third blasting area: it is about 21 meters away from the nearest cemetery and about 41 meters away from scenic spot A and a brick-concrete structure house. These distances have been precisely measured; to the south of the third blasting area: it is about 332 meters away from the brick-concrete structure house of the hydropower station of company B; to the north of the third blasting area: the construction site, where various preparatory work is currently being carried out to ensure the smooth progress of the project, and it is about 94 meters away from the 35KV high-voltage line; underground in the third blasting area: there are no important protected objects; above the third blasting area: there are no important protected objects.

[0068] By acquiring the geological data, topographic data and environmental data of the first blasting area, the second blasting area and the third blasting area, and executing steps S10-S15, it can be learned that pre-splitting blasting is selected for the field test blasting in the first blasting area, deep hole step blasting is selected for the field test blasting in the second blasting area, and shallow hole step blasting is selected for the field test blasting in the third blasting area.

[0069] In one embodiment, when the field test explosion is a pre-splitting explosion, step S201 further includes the following steps:

[0070] A1. Obtain the first parameter set of the first test explosion area, that is, the rock physical parameters of the first test explosion area.

[0071] Specifically, the rock physical parameters of the test explosion area include the compressive strength, elastic modulus, cohesion, friction angle and porosity of the test explosion area. The rock is regarded as a collection of a large number of particles through the discrete element method, and each particle is given a specific mass, size and shape. By simulating the contact and movement between particles, mechanical parameters such as cohesion and friction angle are extracted.

[0072] Further, use UAV flight planning software, such as DJI GS Pro or Pix4Dcapture, to plan the flight path to ensure that the entire target area is covered and sufficient overlap is obtained. Shoot along the planned path at a predetermined altitude and speed. In addition to oblique images, orthophotos can also be obtained as a supplement. After downloading all the photos taken, check the quality of the photos and remove those that are blurry, underexposed, or have other quality issues. Make sure that each photo has accurate geolocation information (GPS coordinates). Import all oblique images into image processing software, such as Pix4Dmapper or Agisoft Metashape. The image processing software automatically identifies common feature points between different photos and constructs a sparse point cloud based on these points to generate a dense point cloud. Create triangular patches from the dense point cloud to form a three-dimensional surface. Based on the three-dimensional model, export a digital elevation model or a digital surface model. The digital elevation model represents the height of the bare ground surface, while the digital surface model includes the height of all surface objects such as buildings and vegetation. Load the digital elevation model or digital surface model file in GIS and use built-in tools or write a script to calculate the slope of each grid cell. Based on the elevation information provided by the digital elevation model or digital surface model, the maximum slope change in a specific area is determined, and the angle of the slope is calculated. For example, the slope angle of the first blasting area is calculated to be 63°.

[0073] Before the pre-splitting blasting, the drilling equipment is controlled to drill along the first slope of the first test blasting area, and the drilling inclination angle is the same as the slope angle.

[0074] The drilling depth formula is as follows:

[0075]

[0076] Among them, H represents the step height, α represents the drilling inclination angle, and h represents the over-depth value of the blasthole.

[0077] The pre-splitting hole parameters include drilling depth, drilling diameter, drilling inclination, and hole spacing. The hole spacing is selected to ensure the continuity of the pre-splitting line.

[0078] For example, Figure 6 As shown, Figure 6 It is a schematic diagram of the slope structure. In the first blasting area, the step height H = 10.0m; the borehole diameter D1 = 90mm; the borehole inclination α = 63°; the super-depth value is usually 0.5~2m, and a larger value is suitable for hard rock, otherwise a smaller value is suitable, for example, h = 0.6m; the borehole depth L = (H / sinα) + h = 11.8m; the hole spacing: a = (10~20)×D1 = 0.9m~1.8m; the pre-blasting layer thickness W = 1.2m~2.0m.

[0079] Furthermore, the time interval between detonation of explosives is controlled so that each pre-crack hole is detonated in sequence. The uncoupled method is used to load explosives, i.e., the diameter of the explosives is smaller than the hole diameter. This method of loading can reduce the pressure of the explosion energy directly acting on the hole wall, which helps to improve the uniformity and controllability of crack formation.

[0080] The property parameters of test explosives include the charge density at the blasthole line and the charge amount per hole.

[0081] The calculation formula of charge density at the blasthole line of pre-splitting blasting is as follows:

[0082] q y =k y ×a y ;

[0083] The calculation formula for the single-hole charge of pre-splitting blasting is as follows:

[0084] Q y =q y ×L;

[0085] Where, L is the drilling depth; k y is the explosive consumption per unit area of ​​rock for pre-splitting blasting (g / m 2 );a y is the hole distance; hole distance a y It is related to the rock properties and pore size, and is usually selected as 8 to 12 times the pore size.

[0086] By adjusting the charge density to ensure proper energy distribution, and taking into account safety factors, the plugging length is set to limit the gas overflow rate, thereby enhancing the blasting effect. For example, the charge density is adjusted to 0.53kg / m, the plugging length L2=w=2.0m; the charge length: L1=L-L2=9.8m. The pre-splitting hole uses uncoupled interval charging, which is divided into three sections, namely: a weakened charging section of 2.0m at the top, a normal charging section in the middle, and a reinforced charging section of 1.5m at the bottom. The φ32mm emulsion explosive roll is tied to the detonating cord and bamboo strips in the pre-splitting hole. After the preparation work is completed, the detonating cord is ignited in a predetermined delay sequence to start the pre-splitting blasting process. By controlling the detonation time interval, each pre-splitting hole is detonated in turn to form a clear crack, thereby guiding the rock in the main blasting area to break along the expected direction.

[0087] A2. Based on the pre-splitting blasting, a second parameter set is obtained, namely, the flying parameters of the flying rocks in the test blasting area and the physical parameters of the flying rocks in the test blasting area of ​​the first test blasting area.

[0088] Specifically, the flight parameters of flying rocks in the test blasting area include the flying rock speed and the flying rock range in the test blasting area, and the physical parameters of flying rocks in the test blasting area include the flying rock particle size and the flying rock weight in the test blasting area.

[0089] High-speed cameras are deployed at the blasting site to record videos at a speed of thousands of frames per second. Image analysis is performed on the captured videos to automatically identify and track the position changes of flying rocks. The speed of flying rocks is calculated by the position difference between consecutive frames, and the range of flying rocks is determined based on the final landing point. Image processing technology is used to segment flying rocks, extract the contour information of individual flying rocks, and then calculate their size, i.e., particle size. The weight of flying rocks is calculated by combining the particle size of flying rocks with the density of the material. LiDAR equipment can also be deployed in the blasting area to monitor the three-dimensional position of flying rocks in real time at a safe distance. LiDAR provides high-precision distance measurement and is suitable for dynamic target tracking in complex environments. Multiple scan data are integrated to construct the three-dimensional motion trajectory of flying rocks. The speed of flying rocks is calculated by the timestamp information on the motion trajectory, and the range of flying rocks is determined based on the final position of flying rocks.

[0090] For example, the first test explosion area includes the following parameter data:

[0091] The stratum in the first test blasting area is medium-hard sandstone.

[0092] Rock physical parameters of the test area:

[0093] Compressive strength = 120 MPa, elastic modulus = 20 GPa, cohesion = 7 MPa, friction angle = 35°, porosity = 15%. The above compressive strength, elastic modulus, cohesion, friction angle, and porosity are all average values ​​measured in the test explosion area.

[0094] Explosive property parameters in the first test blasting area:

[0095] Blast hole line charge density = 1.25g / cm 3 ; Single hole charge = 1.0kg;

[0096] Flying parameters of flying rocks in the first test explosion area:

[0097] Test explosion flying stone speed = 20m / s;

[0098] Maximum range of flying stones: 38m; Average range of flying stones: 25m;

[0099] The coordinates of the farthest point where the flying rocks landed are: 45° east-northeast, and the distance from the detonation point is: 38m.

[0100] Physical parameters of flying stone:

[0101] Large flying stones >50cm 3 ; 5 pieces in total; the weight of large flying stones accounts for 10% of the total.

[0102] Medium-sized flystone particle size is 20 to 50 cm 3 ; A total of 30 pieces; the weight of medium-sized flying stones accounts for 70% of the total.

[0103] Small flying stone particle size <20cm 3 ; A total of 10 pieces; the weight of small flying stones accounts for 20% of the total.

[0104] In one embodiment, when the field test explosion is deep hole step blasting, step S201 further includes the following steps:

[0105] B1. Obtaining the first parameter set of the second test explosion area, namely, the rock physical parameters of the second test explosion area.

[0106] B2. Based on deep hole step blasting, a second parameter set is obtained, namely, the flying parameters of flying rocks in the test blasting area and the physical parameters of flying rocks in the test blasting area of ​​the first test blasting area.

[0107] Before the deep hole step blasting, the drilling equipment is controlled to drill along the second slope of the second test blasting area.

[0108] Specifically, the entire slope is divided into multiple horizontal steps. The height of each step is determined according to the rock properties and engineering requirements, usually 8m to 15m. Starting from the step at the bottom of the slope, blasting operations are carried out in sequence upwards to ensure that each step blasting is completed before entering the next step blasting. The detonation time interval of each step is usually 30 milliseconds to 100 milliseconds to control the propagation speed of the blasting wave. The high-pressure gas and shock wave generated by the explosion quickly propagate to the surrounding rocks, causing cracks to form and expand inside the rock until it breaks. The height of each step determines the drilling depth and charge. The drilling depth is generally 8m to 20m. The width of the step platform needs to consider the operating space of mechanical equipment, which is usually set to 6m to 15m.

[0109] The total detonation time is calculated as follows:

[0110] T = (N-1) × Δt;

[0111] Wherein, N represents the number of blasting holes, and Δt represents the detonation time interval (in milliseconds).

[0112] The formula for calculating the amount of explosives is as follows:

[0113] Q=0.3×D 2 ×H1;

[0114] Among them, Q represents the amount of explosives (in kilograms), D represents the hole diameter (in millimeters), and H1 represents the hole depth (in meters).

[0115] For example, the second test explosion area includes the following parameter data:

[0116] The strata in the second test explosion area are soft soil mixed with gravel.

[0117] Rock physical parameters of the test area:

[0118] Compressive strength = 95 MPa, elastic modulus = 26 GPa, cohesion = 8 MPa, friction angle = 37°, porosity = 18%.

[0119] Explosive property parameters in the second test blasting area:

[0120] Blast hole line charge density = 1.25g / cm 3 ; Single hole charge = 1.5kg.

[0121] Flying parameters of flying rocks in the second test explosion area:

[0122] Maximum range of flying stones: 55m; Average range of flying stones: 35m;

[0123] The coordinates of the farthest point where flying rocks landed are 30° west-southwest, and the flying rocks are mainly concentrated within a range of 50m.

[0124] Physical parameters of flying stone:

[0125] Test explosion flying stone speed = 18m / s;

[0126] Large flying stone particle size>80cm 3 ; A total of 8 pieces; the weight of large flying stones accounts for 15% of the total.

[0127] Medium-sized flystone particle size is 30 to 80 cm 3 ; A total of 20 pieces; the weight of medium-sized flying stones accounts for 60% of the total.

[0128] Small flying stone particle size <30cm 3 ; A total of 15 pieces; the weight of small flying stones accounts for 25% of the total.

[0129] In one embodiment, when the field test explosion is shallow hole step blasting, step S201 further includes the following steps:

[0130] C1. Obtaining the first parameter set of the third test explosion area, namely, the rock physical parameters of the third test explosion area.

[0131] C2. Based on the shallow hole step blasting, the second parameter set is obtained, namely, the flying parameters of flying rocks in the test blasting area and the physical parameters of flying rocks in the test blasting area of ​​the third test blasting area.

[0132] Before the shallow hole step blasting, the drilling equipment is controlled to drill along the third slope of the test blasting area. The entire working surface is divided into multiple horizontal steps. The height of each step is determined according to the rock properties and engineering requirements, usually 2m to 5m. Starting from the bottom step, blasting operations are carried out upwards in sequence. The height of each step determines the drilling depth and charge amount, which is generally 2-5m.

[0133] For example, the third test explosion area includes the following parameter data:

[0134] The stratum in the third test explosion area is hard shale.

[0135] Rock physical parameters of the test area:

[0136] Compressive strength = 95 MPa, elastic modulus = 25 GPa, cohesion = 6 MPa, friction angle = 30°, porosity = 20%.

[0137] Explosive property parameters in the third test blasting area:

[0138] Blast hole line charge density = 1.15g / cm 3 ; Single hole charge = 2.0kg.

[0139] Flying parameters of flying rocks in the third test explosion area:

[0140] Maximum range of flying stones: 65m; Average range of flying stones: 45m;

[0141] The main distribution direction of flying rocks is 45° west-northwest, where flying rocks are more concentrated.

[0142] Physical parameters of flying stone:

[0143] Test explosion flying stone speed = 70m / s;

[0144] Large flying stone particle size>100cm 3 ; A total of 15 pieces; the weight of large flying stones accounts for 20% of the total;

[0145] Medium-sized flystone particle size is 50 to 100 cm 3 ; A total of 30 pieces, the weight of medium-sized flying stones accounts for 50% of the total;

[0146] Small flying stone particle size <50cm 3 ; A total of 15 pieces, the weight of small flying stones accounts for 30% of the total.

[0147] In step S202, a blasting model is established based on the type of field test explosion and the corresponding blasting model parameter set.

[0148] In one embodiment, the blasting model parameter set includes simulated explosive property parameters and simulated hole layout design parameters.

[0149] Specifically, the blasting model parameters also include auxiliary parameters, which include but are not limited to model size and slope. A single-row 4-hole step explosion model is established, with a model size of 150m×100m×30m and a slope of 60°. LS-DYNA is used for numerical simulation, with the bottom boundary as a fixed boundary and the side boundary as a free boundary. The calculation step is 0.001s. The model parameters of the corresponding blasting model are different for different types of field test explosions. In the blasting model parameter set, the simulated explosive property parameters include explosive type, blasthole line charge density, single hole charge, and detonation sequence. The simulated hole layout design parameters include hole spacing, row spacing, drilling depth, and super depth. Different types of explosives have different explosive properties, such as TNT, ammonium nitrate explosive, and emulsion explosive. The blasthole line charge density represents the mass of explosives in the blasthole per unit length, and this parameter affects the concentration of explosion energy. The detonation sequence represents the detonation time interval between each blasthole, which determines the propagation mode of the explosion wave. The hole spacing represents the distance between adjacent blastholes, which affects the uniformity of rock crushing. The row spacing refers to the distance between the front and rear rows of blastholes, which together with the hole spacing determines the hole pattern. The drilling depth refers to the total length of the blasthole, which determines the charge amount. The over-depth refers to the part of the blasthole bottom that exceeds the actual crushing range to prevent unbroken rocks from remaining at the bottom.

[0150] In step S203, the first parameter set is input into the blasting model to obtain a third parameter set, wherein the third parameter set includes simulated flying rock parameters and simulated flying rock physical parameters.

[0151] Specifically, the third parameter set includes simulated flying rock flight parameters and simulated flying rock physical parameters, wherein the simulated flying rock flight parameters include simulated flying rock speed and simulated flying rock range, and the simulated flying rock physical parameters include simulated flying rock particle size and simulated flying rock weight.

[0152] In step S204, the parameter values ​​in the second parameter set and the third parameter set are compared in sequence, and the blasting model parameter set is adjusted based on the comparison result to obtain the optimized blasting model.

[0153] In one embodiment, step S204 further includes the following sub-steps:

[0154] S2041. Based on the comparison result between the flying rock velocity in the test blasting area and the simulated flying rock velocity, adjust at least one of the charge density of the blasthole line, the charge amount of each hole, and the detonation sequence.

[0155] S2042. Based on the comparison result between the flying rock range in the test blasting area and the simulated flying rock range, adjust at least one of the hole spacing, row spacing and drilling depth.

[0156] S2043. Based on the comparison result between the flying rock particle size in the test blasting area and the simulated flying rock particle size, adjust the explosive type and / or charge density of the blasthole line.

[0157] S2044. Based on the comparison result between the flying rock weight in the test blasting area and the simulated flying rock weight, adjust at least one of the explosive type, charge density of the blasthole line, charge amount per single hole and detonation sequence.

[0158] For example, when the simulated flying rock velocity is greater than the flying rock velocity in the test blasting area, the amount of explosives in the unit length of the blast hole can be reduced to reduce the intensity of the shock wave generated by the explosion, or the delayed detonation technology can be used to gradually release the explosion energy instead of a one-time explosion, so that the initial velocity of the flying rock can be effectively controlled, and vice versa. When the flying rock range in the test blasting area is greater than the simulated flying rock range, you can choose to shorten the drilling depth, or reduce the hole spacing and row spacing, because reducing the hole spacing and row spacing can make the explosion energy more concentrated, which helps to control the dispersion range of the flying rock. Deepening or shortening the drilling depth affects the rock crushing mode and the flight trajectory of the flying rock. Different types of explosives have different crushing effects on rocks. For example, emulsion explosives usually produce smaller fragments, while ammonium nitrate explosives may produce larger flying rocks. By changing the charge density, the degree of rock crushing can be affected, and the particle size distribution of the flying rocks can be controlled. A higher charge density may lead to excessive crushing or large flying rocks, while a lower charge density may not be able to fully crush the rock. By adjusting the charge density, the distribution of the explosion energy in the rock can be controlled, thereby affecting the size and weight of the flying rocks. The charge amount of a single hole directly affects the total amount of energy released by each blasthole, thus determining the degree of fragmentation. A reasonable detonation sequence can guide the effective transfer of explosive energy and avoid the concentration of energy in certain areas, resulting in uneven fragmentation and the size of flystones. Excessive charge amount may lead to local excessive fragmentation, forming larger and heavier flystones. By optimizing the detonation sequence, stress waves can be superimposed on each other, promoting uniform fragmentation of rocks.

[0159] In step S205, the fourth parameter set is input into the optimized blasting model to obtain a fifth parameter set, wherein the fourth parameter set includes rock physical parameters of the blasting area.

[0160] Specifically, the fourth parameter set includes rock physical parameters of the blasting zone, wherein the rock physical parameters of the blasting zone include compressive strength of the blasting zone, elastic modulus of the blasting zone, cohesion of the blasting zone, friction angle of the blasting zone and porosity of the blasting zone; the fifth parameter set includes optimized flying rock flight parameters and optimized flying rock physical parameters, wherein the optimized flying rock flight parameters include optimized flying rock speed and optimized flying rock range, and the optimized flying rock physical parameters include optimized flying rock particle size and optimized flying rock weight.

[0161] It should be noted that the purpose of obtaining the first parameter set is to obtain the third parameter set by inputting these parameters into the blasting model. The third parameter set contains the flying rock parameters predicted by the model, which will be compared with the second parameter set of the actual field test explosion. The second parameter set represents the rock physical parameters of the actual test explosion area. By comparing the second parameter set and the third parameter set, the accuracy of the model can be evaluated and the corresponding optimization adjustment can be made accordingly. The rock physical parameters in the fourth parameter set correspond to the rock physical parameters of the entire blasting area. Due to the large scale of the actual blasting area, direct comprehensive testing may consume a lot of time and resources. Therefore, a small area in the blasting area is selected for test explosion to obtain the fourth parameter set. In this way, preliminary testing and parameter acquisition can be carried out in a smaller range, thereby reducing resource consumption and improving efficiency. The parameter acquisition method of the fourth parameter set is similar to that of the first parameter set, and will not be repeated here. The main difference is that the area involved in the fourth parameter set is the entire blasting area, while the first parameter set involves the test explosion area. In this way, the parameters can be initially acquired and tested in a smaller test blast area, and then these parameters can be input into the blast model to predict the flying rock parameters of the entire blast area.The parameters in the fifth parameter set are used to establish the protective structure model.

[0162] For example, the fourth parameter set is input into the optimized blasting model, and the blasting simulation is carried out in the blasting area to obtain the fifth parameter set, where the maximum speed of the splashing rocks is 80 m / s, the average speed at the boundary end is 16.53 m / s, the particle size is 100-500 mm, and the rock volume is 0.5-2.6 m 3 , the maximum flight distance is 120m. The particle size distribution of splashing stones is shown in Table 1:

[0163] Table 1

[0164] Particle size / mm 0-50 50-100 100-200 200-300 300-400 400-500 500-700 700-900 Statistical value / % 6.89 7.25 9.92 7.68 7.98 8.67 16.69 34.92

[0165] In step S206, a rock slope blasting protection scheme is established based on the fifth parameter set to achieve rock slope blasting protection, wherein the fifth parameter set includes optimizing flying rock parameters and optimizing flying rock physical parameters.

[0166] In one embodiment, step S206 further includes the following sub-steps:

[0167] S2061. Establish a protection structure model based on protection structure model parameters, wherein the protection structure model parameters include a simulated protection net mesh size, a simulated protection net material, and a simulated protection net layout method.

[0168] S2062. Input the fifth parameter set into the protection structure model to obtain a rock slope blasting protection scheme, wherein the rock slope blasting protection scheme includes mesh size of the blasting area protection net, material of the blasting area protection net, and layout method of the blasting area protection net.

[0169] Specifically, the protection structure model is established by the discrete element method. The parameters of the protection structure model include the mesh size of the simulated protection net, the material of the simulated protection net and the layout of the simulated protection net. The mesh size of the simulated protection net refers to the distance between two adjacent wires in the protection net. Different mesh sizes are suitable for blocking gravel or falling rocks of different sizes. Larger meshes can reduce the amount of material used, but may allow smaller rocks to pass through, while smaller meshes can provide better protection, but will also increase cost and weight. The material of the simulated protection net is crucial to the strength, durability and adaptability of the protection net. Commonly used materials include high-strength steel wire rope, galvanized steel wire, etc. The layout of the simulated protection net involves how the protection net is installed and fixed on the slope, as well as the installation position of the protection net. It can be vertically suspended, inclined laid or embedded.

[0170] It should be noted that the discrete element method is mainly used to define the contact rules between particles, which determines how they interact with each other. For the simulation of flying rocks and protective nets, the collision rules when flying rocks hit the protective nets are defined, including elastic collision, plastic deformation, etc. The friction coefficient is set to consider the influence of the surface roughness of the flying rocks on the contact force. According to the fifth parameter set (flying rock speed, flying rock range, flying rock particle size and flying rock weight), the initial position and movement direction of the flying rocks are set. If there are other external loads (such as wind force, earthquake force), they should also be applied at this stage. The parameters in the fourth parameter set are input into the protective structure model, and the discrete element method simulation program is started to obtain the fifth parameter set. The fifth parameter set includes optimizing flying rock flight parameters and optimizing flying rock physical parameters. Optimizing flying rock flight parameters includes optimizing flying rock speed and optimizing flying rock range. Optimizing flying rock physical parameters includes optimizing flying rock particle size and optimizing flying rock weight. The fifth parameter set is input into the established protective structure model. The protective structure model can simulate the flight trajectory and impact energy of flying rocks during the blasting process. Through repeated simulation and optimization, the most matching protection scheme is obtained to ensure the effective protection of surrounding personnel and equipment safety during the blasting process. Among them, the mesh size is determined according to the flying rock particle size and range, and it can block most flying rocks without excessively increasing the material cost. According to the flying rock speed, flying rock particle size, flying rock range and flying rock weight, the material with sufficient strength and good durability is determined to ensure that the protective net can continue to provide protection within the expected service life. In addition, the protective net design can withstand the energy of flying rock impact and reduce the harm to personnel and equipment behind the protective net.

[0171] The total kinetic energy of falling rocks hitting the flexible protective net is as follows:

[0172]

[0173] Where m represents the flying stone mass and v represents the flying stone velocity.

[0174] For example, the density of the stone is 2500 kg / m 3 , the most unfavorable volume is selected as 2.6m 3 , after calculation, the total kinetic energy is 1376.54KJ, and the energy level requirements of the protection system are shown in Table 2:

[0175] Table 2

[0176]

[0177] According to the total kinetic energy value and the requirements and specifications of the protection system energy level, the PPS-200 protection net is adopted. The span of a single protection net is 10m and the height is 6m. The protection net is composed of two layers of ring net and wire rope grid net. The ring net is used to block large-size flying stones, and the grid net intercepts small-size flying stones. The models of the front and rear two layers of protection nets are: RN / 7 / 3 / 300 / 5×6 / T, G / H / 2.2 / 60 / 3×10, the diameter of the ring net is 3mm, the grid net is high-strength steel wire, the diameter is 2.2mm, and the diameter of the inscribed circle is 60mm. Arrange a multi-level protection grid frame with an installation angle of 75° between the protection net and the slope. Set up a safety net 120m away from the blasting center, and arrange one layer every 10m towards the blasting center. A total of four layers are arranged to increase the interception rate and reduce the damage of flying stones to the environment.

[0178] In a specific embodiment, a single-row 4-hole step blasting model is established, the model size is 150m×100m×30m, the slope is 60°, and the rock density is 2500kg / m 3 , elastic modulus is 30GPa, Poisson's ratio is 0.25, friction coefficient is 0.5, and compressive strength is 80MPa. The explosion hole diameter is 120mm, the hole spacing is 6m, the row spacing is 4m, the hole depth is 15m, the charge length is 10m, the single hole charge is 80kg, and the delay between holes is 20ms. LS-DYNA is used for numerical simulation. The main calculation unit size is 0.2m, and the remaining area is 0.5m. The bottom boundary is a fixed boundary, the side boundary is a free boundary, and the step size is 0.001s. After calculation, it can be obtained that the maximum speed of the splashing stone is 80m / s, the particle size is 100-500mm, the maximum flight distance is 120m, and the flight angle is 30°-50°.

[0179] It is recommended to choose a rigid steel wire mesh with an aperture of 150mm×150mm for the safety net, and set up the safety net 120m away from the detonation point. The mesh size is ≤5cm to ensure effective protection against flying rocks from blasting. The net thickness is at least 8mm, and 8mm is used. The protective net should be set up along the working area around the blasting area, 10 to 15m away from the edge of the blasting area, and set up multiple layers (at least two layers), with the upper and lower nets overlapping.

[0180] According to the rock slope blasting protection method of the present application, the following Figure 3-Figure 5 The first blasting area, the second blasting area and the third blasting area shown are established for protection.

[0181] Establish protection in the first blasting area as follows:

[0182] North side: A protective net is set up along the line direction on one side of the 10KV high-voltage line, with a height of 4 to 5m and an extension length of at least 10m covering both ends of the high-voltage line.

[0183] East side: A protective net is set up along the shoulder on one side of the highway, with a height of no less than 3m, and warning signs are hung to ensure the safety of passing vehicles.

[0184] Establish protection in the second blasting area as follows:

[0185] North side: A protective net is set up along the line direction on one side of the 10KV high-voltage line, with a height of 4 to 5m and an extension length of at least 10m covering both ends of the high-voltage line.

[0186] West side: In the direction of the flood control channel dam, a 4m high vertical protection net is set up, and the protection net is 10 to 15m away from the dam.

[0187] The protection established in the third blasting area is as follows:

[0188] North side: set up a protective net along the line direction on one side of the 10KV high-voltage line, with a height of 4 to 5 meters, and an extension length covering at least 10 meters at both ends of the high-voltage line. Set up a 6m high vertical protective net near the brick-concrete structure area.

[0189] West side: In the direction of the cemetery and tourist attractions, a 5m high vertical protective net is set up, and an additional protective net is installed. The additional protective net is arranged at an angle of 30° to 45°.

[0190] East side: Two layers of protective nets are arranged along the outer side of the flood control dam, with a height of 1.5m and a width of 1m.

[0191] The rock slope blasting protection method of the present application can formulate blasting design plans more accurately and reduce the errors and uncertainties of human judgment. The parameter set obtained through the test explosion can reflect the physical and mechanical properties of the rock and the energy release during the explosion process, providing reliable data support for the establishment of the blasting model. At the same time, by continuously optimizing the blasting model, the accuracy and reliability of the blasting design can be further improved, and the risks and hazards that may arise during the blasting process can be reduced. In addition, the rock slope blasting protection method proposed in the present application can also flexibly adjust the protection measures according to the specific site conditions and blasting requirements, thereby improving the protection effect and economic benefits.

[0192] Based on the same inventive concept, the embodiment of the present application also provides a device for implementing the rock slope blasting protection mentioned above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the rock slope blasting protection device provided below can refer to the limitations of the rock slope blasting protection method above, and will not be repeated here.

[0193] In an exemplary embodiment, Figure 7 As shown, a rock slope blasting protection device is provided, comprising:

[0194] The acquisition module 710 is used to acquire a test explosion area parameter set based on a field test explosion, wherein the test explosion area parameter set includes a first parameter set and a second parameter set, wherein the first parameter set includes rock physical parameters of the test explosion area, and the second parameter set includes flying rock parameters and flying rock physical parameters of the test explosion area;

[0195] A first establishing module 720 is used to establish a blasting model based on the type of the field test explosion in the test explosion area and a corresponding blasting model parameter set;

[0196] A first input module 730 is used to input the first parameter set into the blasting model, perform simulated blasting in the test blasting area, and obtain a third parameter set, wherein the third parameter set includes simulated flying rock parameters and simulated flying rock physical parameters;

[0197] A comparison module 740 is used to compare the parameter values ​​in the second parameter set and the third parameter set in sequence, and adjust the blasting model parameter set based on the comparison result to obtain the optimized blasting model;

[0198] The second input module 750 inputs the fourth parameter set into the optimized blasting model, performs simulated blasting in the blasting area, and obtains a fifth parameter set, wherein the fourth parameter set includes rock physical parameters in the blasting area;

[0199] The second establishing module 760 is used to establish a rock slope blasting protection scheme based on the fifth parameter set to achieve rock slope blasting protection, wherein the fifth parameter set includes optimizing flying rock parameters and optimizing flying rock physical parameters.

[0200] As an optional implementation, the field test explosion includes: the field test explosion type in the first blasting area is pre-splitting blasting, the field test explosion type in the second blasting area is deep hole step blasting, and the field test explosion type in the third blasting area is shallow hole step blasting.

[0201] As an optional implementation, the rock physical parameters of the test explosion area include the test explosion area compressive strength, the test explosion area elastic modulus, the test explosion area cohesion, the test explosion area friction angle and the test explosion area porosity;

[0202] The flying parameters of the flying rocks in the test blasting area include the flying rock speed and the flying rock range in the test blasting area, and the flying rock physical parameters in the test blasting area include the flying rock particle size and the flying rock weight in the test blasting area;

[0203] The simulated flying stone flight parameters include simulated flying stone speed and simulated flying stone range, and the simulated flying stone physical parameters include simulated flying stone particle size and simulated flying stone weight;

[0204] The blasting model parameter set includes simulated explosive property parameters and simulated hole layout design parameters, wherein the simulated explosive property parameters include explosive type, blasthole line charge density, single hole charge, and detonation sequence, and the simulated hole layout design parameters include hole spacing, row spacing, drilling depth, and over-depth.

[0205] As an optional implementation, the comparison module 740 is specifically configured to:

[0206] Based on the comparison result of the flying rock velocity in the test explosion area and the simulated flying rock velocity, adjusting at least one of the charge density of the blasthole line, the charge amount of the single hole and the detonation sequence;

[0207] Based on the comparison result of the flying rock range of the test explosion area and the simulated flying rock range, adjusting at least one of the hole spacing, the row spacing and the drilling depth;

[0208] Based on the comparison result between the flystone particle size in the test explosion area and the simulated flystone particle size, adjusting the explosive type and / or the charge density of the blasthole line;

[0209] Based on the comparison result between the flying rock weight in the test explosion area and the simulated flying rock weight, at least one of the explosive type, the charge density of the blasthole line, the charge amount of the single hole and the detonation sequence is adjusted.

[0210] As an optional implementation, the second establishing module 760 is specifically configured to:

[0211] Establishing a protection structure model based on protection structure model parameters, wherein the protection structure model parameters include a simulated protection net mesh size, a simulated protection net material, and a simulated protection net layout method;

[0212] The fifth parameter set is input into the protection structure model to obtain a rock slope blasting protection scheme, which includes the mesh size of the blasting area protection net, the material of the blasting area protection net and the layout method of the blasting area protection net.

[0213] As an optional implementation, the rock physical parameters of the blasting zone include the compressive strength of the blasting zone, the elastic modulus of the blasting zone, the cohesion of the blasting zone, the friction angle of the blasting zone and the porosity of the blasting zone;

[0214] The optimization of flying stone flight parameters includes optimizing flying stone speed and optimizing flying stone range, and the optimization of flying stone physical parameters includes optimizing flying stone particle size and optimizing flying stone weight.

[0215] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 8 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store a set of test explosion area parameters. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a rock slope blasting protection method is implemented.

[0216] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0217] In an exemplary embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0218] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0219] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0220] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0221] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0222] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0223] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0224] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A rock slope blasting protection method, characterized in that: The rock slope blasting protection method comprises: Based on the field test explosion, a test explosion area parameter set is obtained, wherein the test explosion area parameter set includes a first parameter set and a second parameter set, wherein the first parameter set includes rock physical parameters of the test explosion area, and the second parameter set includes flying rock parameters and flying rock physical parameters of the test explosion area; Establishing a blasting model based on the type of field test explosion in the test explosion area and a corresponding blasting model parameter set; Inputting the first parameter set into the blasting model, performing simulated blasting in the test blasting area, and obtaining a third parameter set, wherein the third parameter set includes simulated flying rock parameters and simulated flying rock physical parameters; Comparing the parameter values ​​in the second parameter set and the third parameter set in sequence, and adjusting the blasting model parameter set based on the comparison result to obtain the optimized blasting model; Inputting the fourth parameter set into the optimized blasting model, performing simulated blasting in the blasting area, and obtaining a fifth parameter set, wherein the fourth parameter set includes rock physical parameters in the blasting area; Based on the fifth parameter set, a rock slope blasting protection scheme is established to achieve rock slope blasting protection, wherein the fifth parameter set includes optimizing flying rock parameters and optimizing flying rock physical parameters.

2. The rock slope blasting protection method according to claim 1 is characterized in that: The field test explosion includes: the field test explosion type of the first blasting area is pre-splitting blasting, the field test explosion type of the second blasting area is deep hole step blasting, and the field test explosion type of the third blasting area is shallow hole step blasting.

3. The rock slope blasting protection method according to claim 1, characterized in that: The rock physical parameters of the test explosion area include the compressive strength of the test explosion area, the elastic modulus of the test explosion area, the cohesion of the test explosion area, the friction angle of the test explosion area and the porosity of the test explosion area; The flying parameters of the flying rocks in the test blasting area include the flying rock speed and the flying rock range in the test blasting area, and the flying rock physical parameters in the test blasting area include the flying rock particle size and the flying rock weight in the test blasting area; The simulated flying stone flight parameters include simulated flying stone speed and simulated flying stone range, and the simulated flying stone physical parameters include simulated flying stone particle size and simulated flying stone weight; The blasting model parameter set includes simulated explosive property parameters and simulated hole layout design parameters, wherein the simulated explosive property parameters include explosive type, blasthole line charge density, single hole charge, and detonation sequence, and the simulated hole layout design parameters include hole spacing, row spacing, drilling depth, and over-depth.

4. The rock slope blasting protection method according to claim 3 is characterized in that: Comparing the parameter values ​​in the second parameter set with those in the third parameter set in sequence, and adjusting the model parameters based on the comparison results, including: Based on the comparison result of the flying rock velocity in the test explosion area and the simulated flying rock velocity, adjusting at least one of the charge density of the blasthole line, the charge amount of the single hole and the detonation sequence; Based on the comparison result of the flying rock range of the test explosion area and the simulated flying rock range, adjusting at least one of the hole spacing, the row spacing and the drilling depth; Based on the comparison result between the flystone particle size in the test explosion area and the simulated flystone particle size, adjusting the explosive type and / or the charge density of the blasthole line; Based on the comparison result between the flying rock weight in the test explosion area and the simulated flying rock weight, at least one of the explosive type, the charge density of the blasthole line, the charge amount of the single hole and the detonation sequence is adjusted.

5. The rock slope blasting protection method according to claim 1, characterized in that: Based on the fifth parameter set, a rock slope blasting protection scheme is established to achieve rock slope blasting protection, including: Establishing a protection structure model based on protection structure model parameters, wherein the protection structure model parameters include a simulated protection net mesh size, a simulated protection net material, and a simulated protection net layout method; The fifth parameter set is input into the protection structure model to obtain a rock slope blasting protection scheme, which includes the mesh size of the blasting area protection net, the material of the blasting area protection net and the layout method of the blasting area protection net.

6. The rock slope blasting protection method according to claim 1, characterized in that: The rock physical parameters of the blasting zone include the compressive strength of the blasting zone, the elastic modulus of the blasting zone, the cohesion of the blasting zone, the friction angle of the blasting zone and the porosity of the blasting zone; The optimization of flying stone flight parameters includes optimizing flying stone speed and optimizing flying stone range, and the optimization of flying stone physical parameters includes optimizing flying stone particle size and optimizing flying stone weight.

7. A rock slope blasting protection device, characterized in that: The rock slope blasting protection device comprises: An acquisition module, used for acquiring a test explosion zone parameter set based on a field test explosion, wherein the test explosion zone parameter set includes a first parameter set and a second parameter set, wherein the first parameter set includes rock physical parameters of the test explosion zone, and the second parameter set includes flying rock parameters and flying rock physical parameters of the test explosion zone; A first establishing module is used to establish a blasting model based on the type of field test explosion in the test explosion area and a corresponding blasting model parameter set; A first input module is used to input the first parameter set into the blasting model, perform simulated blasting in the test blasting area, and obtain a third parameter set, wherein the third parameter set includes simulated flying rock parameters and simulated flying rock physical parameters, and wherein the fourth parameter set includes rock physical parameters in the blasting area; A comparison module, used for comparing the parameter values ​​in the second parameter set and the third parameter set in sequence, and adjusting the blasting model parameter set based on the comparison result to obtain the optimized blasting model; A second input module is used to input the fourth parameter set into the optimized blasting model to obtain a fifth parameter set, wherein the fourth parameter set includes rock physical parameters of the blasting area; The second establishing module is used to establish a rock slope blasting protection plan based on the fifth parameter set to achieve rock slope blasting protection, wherein the fifth parameter set includes optimizing flying rock parameters and optimizing flying rock physical parameters.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the rock slope blasting protection method described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the rock slope blasting protection method described in any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the rock slope blasting protection method described in any one of claims 1 to 6 are implemented.

Images