Method and device for releasing crustal stress based on crustal stress visualization, electronic equipment and readable storage medium

Abstract

The invention provides a crustal stress visualization-based method and device for releasing crustal stress, electronic equipment and a readable storage medium. The method comprises the following steps: S1, acquiring an image of a target rock drilling area; s2, determining a visual ground stress partition map of the target rockburst section; s3, the distance L between the target rock burst section and the target rock drilling area is determined; s4, based on the visual ground stress partition map, drilling is conducted in the target rock drilling area according to the target route to release ground stress, and the drilling depth is L + c; s5, a visual ground stress partition map of the target rockburst section after drilling is obtained, whether a high ground stress area exists in the visual ground stress partition map of the target rockburst section after drilling is judged, if yes, the step S4 is executed, and if not, the step S5 is executed; if not, the crustal stress release is ended; by means of the method, it can be ensured that the target rockburst section does not have a high ground stress area, rockburst is avoided, and construction safety is improved.

Description

Technical Field

[0001] The present invention relates to a construction field, and in particular to a method, a device, an electronic device and a readable storage medium for releasing ground stress based on ground stress visualization. Background Art

[0002] The construction of highway tunnels can shorten the distance between cities, especially in mountainous or hilly areas. By building tunnels, people can avoid detouring on winding mountain roads, thus saving time and fuel consumption. In addition, tunnels can improve traffic efficiency, are not affected by bad weather, and ensure the continuity and stability of traffic.

[0003] At present, the common construction method for highway tunnels in my country is still the traditional drilling and blasting method, which involves tunnel excavation, initial support construction, secondary lining support construction and other processes that require a lot of manpower; when using the traditional drilling and blasting method, the hard and brittle surrounding rock with high ground stress is affected by the excavation disturbance, the elastic strain energy of the surrounding rock exceeds the energy storage limit, and the excess energy is released quickly, which is very likely to cause rock burst hazards. Rock bursts are often accompanied by surrounding rock cracking, loosening, spalling, rock fragments ejection, throwing, large-scale rock collapse or mine earthquakes and other disasters. While causing extremely serious damage to the tunnel face, it will also cause damage to excavation equipment and casualties, seriously affecting the construction progress, and may even cause problems such as over-excavation and support failure.

[0004] Therefore, in order to avoid rock bursts, affecting construction progress, and causing casualties, a new construction method is urgently needed. Summary of the invention

[0005] In view of this, in order to prevent the elastic strain energy of the surrounding rock from exceeding the energy storage limit and thus causing rock burst, the present invention proposes a method, device, electronic device and readable storage medium for releasing ground stress based on ground stress visualization.

[0006] The present invention provides a method for releasing ground stress based on ground stress visualization, comprising the following steps:

[0007] S1. Acquire an image of the target drilling area;

[0008] S2. Performing geostress zoning on the target rockburst section closest to the target rock drilling area, and mapping it on the image of the target rock drilling area, to obtain a visualized geostress zoning map of the target rockburst section;

[0009] The geostress zoning is divided into high geostress area, relatively high geostress area and general geostress area;

[0010] S3. Determine the distance L between the target rockburst section and the target drilling area;

[0011] S4. Based on the visualized geostress zoning map, drilling is performed in the target drilling area along the target route to release the geostress, and the drilling depth is L+c;

[0012] Among them, the target route is the boundary line between the higher ground stress area and the general ground stress area, c represents the depth correction value, c>0;

[0013] S5. Obtain a visualized geostress zoning diagram of the target rockburst section after drilling, and determine whether there is a high geostress area in the visualized geostress zoning diagram of the target rockburst section after drilling. If yes, return to step S4; if not, the geostress release is terminated.

[0014] Further, the distance L is determined by the following method:

[0015] Select any target point in the high ground stress area or relatively high ground stress area of ​​the target rockburst section, obtain the ultrasonic velocity value and time from any two detection points to the target point, and the distance between the two detection points, and calculate the distance L based on the above data. The calculation formula is as follows:

[0016]

[0017] x1=v1t1

[0018] x2=v2t2

[0019] Among them, x1 represents the distance from the first detection point to the target point, v1 and t1 correspond to the ultrasonic wave velocity and time from the first detection point to the target point, x2 represents the distance from the second detection point to the target point, v2 and t2 correspond to the ultrasonic wave velocity and time from the second detection point to the target point, and x represents the distance between the first detection point and the second detection point.

[0020] Furthermore, the target rockburst section is zoned for ground stress by the following method:

[0021] Obtain the ultrasonic velocity values ​​at each position of the target rockburst section and the reference wave velocity value V1, and compare the ultrasonic velocity values ​​at each position with the reference wave velocity value V1:

[0022] If the ultrasonic velocity value at a location is greater than 1.5V1, it is a high geostress area;

[0023] If the ultrasonic velocity value at a location is greater than 1.3V1 and less than or equal to 1.5V1, it is a high ground stress area;

[0024] If the ultrasonic velocity value at the grid is less than or equal to 1.3V1, it is a general geostress area;

[0025] The reference wave velocity value V1 is obtained by detecting the ultrasonic wave velocity value of a rock sample having the same lithology as the target rock drilling area.

[0026] Furthermore, before each drilling, the method also includes spraying cooling water on the surrounding rock on the target route in the target rock drilling area.

[0027] Accordingly, a device for releasing ground stress is also provided, comprising a vehicle body, a visual detection device, a control module, a rock drilling device, a first drive device and a second drive device;

[0028] The visualization detection device includes an ultrasonic detector and a camera, which are fixedly arranged on the first driving device and perform linear motion and rotational motion under the action of the first driving device. The ultrasonic detector is used to detect the ultrasonic velocity value of the target rock burst section and transmit it to the control module, and the camera is used to capture the image of the target rock drilling area and transmit it to the control module.

[0029] The control module is arranged in the vehicle body and is connected to the remote monitoring center through the wireless transmission module, and is used to receive ultrasonic velocity values ​​and images, and obtain a visualized geostress zoning map of the target rockburst section according to the method for releasing geostress based on geostress visualization, and transmit the visualized geostress zoning map to the remote monitoring center;

[0030] The rock drilling device is fixedly arranged on the second driving device and performs linear motion under the action of the second driving device. The rock drilling device is used to perform rock drilling according to a target route according to the method for releasing ground stress based on ground stress visualization under the control of the control module;

[0031] The first driving device and the second driving device are both installed on the vehicle body and are control-connected to the control module.

[0032] Further, the rock drilling device includes a rock drilling gun that can be driven to move forward and backward;

[0033] The rock drill gun comprises a drill bit, a connecting rod and a hollow rock drill gun body;

[0034] The connecting rod passes through the rock drill body and one end is fixedly connected to the drill bit. The connecting rod can be driven to rotate, and the rock drill body is fixedly arranged on the second driving device through a supporting seat.

[0035] Furthermore, a plurality of through holes are evenly arranged on the rock drilling gun body.

[0036] Furthermore, a cooling device is included for softening surrounding rocks on the target route and reducing the temperature of the drill bit, and the cooling device includes a water gun that can be driven to move forward and backward, a high-pressure water storage chamber, a water delivery assembly and a cooling water tank;

[0037] The cooling water tank is arranged in the vehicle body for cooling water; the water supply assembly is used to supply cooling water into the high-pressure water storage chamber; the high-pressure water storage chamber is connected to the water gun for providing high-pressure cooling water to the water gun, and the water gun is used to spray cooling water to the surrounding rock on the target route in the target rock drilling area and the drill bit.

[0038] Accordingly, an electronic device is also provided, comprising:

[0039] A memory and a processor, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the method for releasing ground stress based on ground stress visualization is implemented.

[0040] Correspondingly, a readable storage medium is also provided, in which computer instructions are stored. When the computer instructions are executed by a processor, the above-mentioned method for releasing ground stress based on ground stress visualization is implemented.

[0041] Beneficial effects of the present invention: The present invention maps the geostress distribution of the target rockburst section to the target rock drilling area, so that the geostress distribution of the target rockburst section can be visualized, which helps to grasp the stress distribution of the target rockburst section and provide a basis for subsequent advance drilling to release geostress; further, the present invention can also achieve gradual release of geostress in high geostress areas by drilling at the boundary between higher geostress areas and general geostress areas, thereby avoiding rockbursts. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0043] Figure 1 It is a flow chart of the present invention;

[0044] Figure 2 This is a schematic diagram of predicting rock burst points according to the present invention;

[0045] Figure 3 A schematic diagram of the distribution of geostress and the release of geostress by drilling according to the present invention;

[0046] Figure 4 Schematic diagram of the structure of the device for releasing ground stress in this embodiment;

[0047] Figure numerals: 1-body, 2-rock drilling device, 201-drill bit, 202-connecting rod, 203-rock drilling gun body, 3-ultrasonic detector, 4-camera, 5-second drive device, 6-first drive device, 7-water gun, 8-high-pressure water storage chamber, 9-water supply assembly, 10-cooling water tank. DETAILED DESCRIPTION

[0048] The present invention is further described below in conjunction with the accompanying drawings:

[0049] The present invention provides a method for releasing ground stress based on ground stress visualization, comprising the following steps:

[0050] S1. Acquire an image of a target drilling area; the target drilling area refers to a tunnel face, that is, a working face to be drilled;

[0051] S2. Perform geostress zoning on the target rockburst section closest to the target rock drilling area and map it on the image of the target rock drilling area to obtain a visualized geostress zoning map of the target rockburst section; the target rockburst section refers to a section in the surrounding rock to be excavated that is likely to cause rockburst in the tunnel to be excavated, as determined by experience or other existing methods, such as Figure 2 As shown;

[0052] The geostress zoning is divided into high geostress area, relatively high geostress area and general geostress area;

[0053] S3. Determine the distance L between the target rockburst section and the target drilling area;

[0054] S4. Based on the visualized geostress zoning map, drilling is performed in the target drilling area along the target route to release the geostress, and the drilling depth is L+c;

[0055] Among them, the target route is the boundary line between the higher ground stress area and the general ground stress area, c represents the depth correction value, c>0;

[0056] S5. Obtain a visualized geostress zoning diagram of the target rockburst section after drilling, and determine whether there is a high geostress area in the visualized geostress zoning diagram of the target rockburst section after drilling. If yes, return to step S4; if not, the geostress release is terminated.

[0057] After the ground stress is released, excavation construction can be carried out on the target rock drilling area until the ground stress needs to be released again, and steps S1-S5 are repeated;

[0058] Through the above method, the ground stress of the target rockburst section can be gradually released, avoiding sudden excavation that causes the surrounding rock to exceed the energy storage limit and cause rockburst, thereby improving the safety of construction.

[0059] In this embodiment, in step S1, an image of the target rock drilling area is obtained; the target rock drilling area is obtained to map the ground stress distribution of the target rock burst section in the image, so that the ground stress distribution of the target rock burst section is visualized. It is preferred to perform grid division in the obtained image, which can improve the accuracy of subsequent mapping of the ground stress state, such as Figure 3 As shown;

[0060] The present application does not limit the device for acquiring the image of the target rock drilling area, and preferably uses a geological detection camera to acquire the image; through the above steps, a basis can be provided for visualizing the ground stress distribution of the target rock burst section.

[0061] In this embodiment, in step S2, the target rockburst section closest to the target rock drilling area is subjected to geostress zoning, and the geostress zoning of the target rockburst section is mapped to the image of the target rock drilling area to obtain a visualized geostress zoning map of the target rockburst section;

[0062] The geostress zoning is divided into high geostress area, relatively high geostress area and general geostress area;

[0063] The target rockburst section is located in front of the tunnel face and is a section that has not been excavated in the longitudinal direction of the tunnel. The section has the same shape and size as the target rock drilling area, and the distances from each point to the target rock drilling area are the same. The process of mapping the ultrasonic velocity value obtained by detecting a plane to another plane of the same shape and size is a prior art and will not be described in detail here.

[0064] Specifically, the ultrasonic velocity values ​​at each position of the target rockburst section are obtained. If grid division is performed, the ultrasonic velocity values ​​at different grids corresponding to the target rockburst section positions are obtained. If there are grids without ultrasonic value settings, the grids without ultrasonic value settings can be estimated by the Kriging interpolation method based on the grids with ultrasonic velocity values ​​already set. The Kriging interpolation method is an existing technology and will not be described in detail here.

[0065] Changes in geostress will affect the elastic modulus and Poisson's ratio of the rock mass, and thus affect the propagation speed of ultrasound in the rock. Generally speaking, as geostress increases, the rock will become more compact, and the propagation speed of sound waves in it will increase. On the contrary, a decrease in geostress may lead to a decrease in the speed of sound. On the other hand, due to the anisotropy of the rock mass under different stress states, the propagation speed of ultrasound waves in different directions is different. In particular, when the rock mass is subjected to non-uniform or directional stress, the distribution of geostress will directly affect the opening and closing of cracks in the rock mass. Changes in its internal microstructure will cause differences in ultrasonic propagation characteristics (such as speed and attenuation) in different directions. High stress areas may cause rock cracks to close, making the propagation path of ultrasound waves more direct and increasing the speed of sound. For rocks that are continuously subjected to low stress or stress release areas, their cracks remain open, the sound wave propagation path becomes more complex, the speed of sound decreases, and the attenuation increases. Therefore, the stress state of the rock mass can be reflected by measuring the ultrasonic velocity value, which can provide a basis for subsequent geostress zoning and geostress visualization.

[0066] Get the reference wave velocity value V1, and compare the ultrasonic wave velocity value at each position with the reference wave velocity value V1:

[0067] If the ultrasonic velocity value of the position is greater than 1.5V1, it is a high ground stress area; further, the high ground stress area can be divided more finely, and the division standard is set according to the needs, which will not be repeated here;

[0068] If the ultrasonic velocity value at a location is greater than 1.3V1 and less than or equal to 1.5V1, it is a high ground stress area;

[0069] If the ultrasonic velocity value at the grid is less than or equal to 1.3V1, it is a general geostress area;

[0070] The reference wave velocity value V1 is obtained by detecting the ultrasonic wave velocity value of a rock sample with the same lithology as the target rock drilling area. The process assumes that the rock sample with the same lithology as the target rock drilling area is only subjected to self-weight stress.

[0071] Since geostress can be regarded as composed of self-weight stress and tectonic stress, self-weight stress refers to the stress generated by the rock mass itself. Since it is regularly distributed, it will appear as a relatively uniform and consistent wave velocity or waveform change in ultrasonic testing; tectonic stress is the stress generated by geological tectonic movement, which is usually non-uniform and unstable. In ultrasonic testing, tectonic stress will cause local changes in ultrasonic wave velocity and waveform, which are different from the changes caused by self-weight stress.

[0072] By comparing the measured ultrasonic velocity value with the reference wave velocity value under the stress of deadweight only, the areas under different tectonic stresses between the surrounding rocks can be divided. The higher the tectonic stress between the surrounding rocks, the higher the ground stress, and the higher the ground stress, the more likely it is that rock burst will occur.

[0073] Through the above method, the ground stress can be accurately divided into regions without causing damage to the surrounding rock, and a basis can be provided for releasing the ground stress through drilling.

[0074] In this embodiment, in step S3, the distance L between the target rockburst section and the target rock drilling area is determined;

[0075] The distance L is determined by the following method: randomly selecting a target point in the high ground stress area or relatively high ground stress area of ​​the target rockburst section, obtaining the ultrasonic velocity value and time from any two detection points to the target point, and the distance between the two detection points, and calculating the distance L based on the above data, and the calculation formula is as follows:

[0076]

[0077] x1=v1t1

[0078] x2=v2t2

[0079] Among them, x1 represents the distance from the first detection point to the target point, v1 and t1 respectively represent the ultrasonic wave velocity and time during the process from the first detection point to the target point, x2 represents the distance from the second detection point to the target point, v2 and t2 respectively represent the ultrasonic wave velocity and time during the process from the second detection point to the target point, and x represents the distance between the first detection point and the second detection point. Figure 2 As shown;

[0080] Since the ultrasonic detector detects multiple groups of data at a detection point, if the distance is calculated directly based on one of the data, it cannot be guaranteed that the calculated distance is the vertical distance between the two surfaces. It may be a diagonal distance. By obtaining data from two detection points and the same target point, a triangle can be constructed. Further, according to the relevant theorem of triangles, the vertical distance from the target point to the target drilling area (tunnel face) can be calculated. The distance L calculated using the above method is more accurate.

[0081] To ensure the accuracy of the calculated distance L, the detection angle can be calculated according to each distance. The accuracy of the distance L can be judged by judging whether the detection angle conforms to the triangle theorem or whether it satisfies the actual detection angle. If it is accurate, drilling is performed based on the distance L. If it is inaccurate, the distance L is recalculated according to the above method. The detection angle refers to the acute angle formed by the line formed by the target point and the detection point and the target drilling area, that is, the acute angle formed by the line formed by the target point and the detection point and the tunnel face. The calculation formula is as follows:

[0082]

[0083] Among them, α represents the detection angle of the first detection point, and β represents the detection angle of the second detection point;

[0084] Since the target rockburst section is determined based on the location where the rockburst may occur, there may be errors if the distance is determined based on points in other geostress zones in the target rockburst section. It is more accurate to calculate the distance based on points in the high geostress zone, and by calculating the above-mentioned detection angle, the calculated distance can be verified to ensure that the calculated distance is the distance from the target drilling area to the area where the rockburst may occur (high geostress zone), providing data support for accurate drilling to release geostress.

[0085] In this embodiment, before each drilling, the surrounding rock on the target route in the target drilling area is also sprayed with cooling water. The present application does not limit the time, number of times and range of spraying cooling water. As long as cooling water is sprayed on the surrounding rock on the target route before each drilling to release the ground stress, whether to spray cooling water during the ground stress release process and whether to spray cooling water on the surrounding rock around the target route can be set according to experience and are not limited here. Preferably, cooling water is sprayed on the surrounding rock around the target route each time. The specific range of spraying cooling water can be set according to experience and is not repeated here. The purpose of spraying cooling water is to soften the surrounding rock. Spraying water to soften the surrounding rock can effectively reduce the uniaxial compressive strength of the rock, making the surrounding rock more susceptible to plastic deformation, thereby reducing the probability of rock burst.

[0086] In this embodiment, in step S4, based on the visualized geostress zoning map, drilling is performed in the target rock drilling area according to the target route to release the geostress, and drilling is performed starting from any point on the target route, and the drilling depth is L+c;

[0087] The target route is the boundary line between the higher ground stress area and the general ground stress area, c represents the depth correction value, c>0, c is set based on experience, and is preferably 0.5 meters;

[0088] Drilling target route Figure 3 As shown ( Figure 3 The darkest and second darkest parts are both high geostress areas, the third darkest part is relatively high geostress area, the lightest part is general geostress area, and the pressure relief trace is the boundary line between the relatively high geostress area and the general geostress area). The spacing between boreholes is determined based on experience, and uniform drilling is preferred;

[0089] During the drilling process, multiple drillings can be performed until the drilling depth meets L+c. The above method can effectively prevent the sudden change of surrounding rock stress in dangerous areas; during drilling, the drilling angle can be set according to needs to reduce the possibility of rock blocks jumping out;

[0090] The depth correction value is added to the drilling depth to ensure that the hole can cover and effectively release the stress around the high ground stress area and reduce the possibility of rock burst.

[0091] In this embodiment, in step S5, a visualized geostress zoning diagram of the target rockburst section after drilling is obtained, and it is determined whether there is a high geostress area in the visualized geostress zoning diagram of the target rockburst section after drilling. If yes, the process returns to step S4; if not, the geostress release ends;

[0092] Since the ground stress will be redistributed after drilling, the ground stress distribution state of the target rockburst section must be re-determined. If there is still a high ground stress area, drilling is carried out according to the new target route in the new visual ground stress zoning map until it is ensured that there is no high ground stress area in the target rockburst section closest to the target rock drilling area. The end standard for releasing ground stress can also be raised to no high ground stress area, but in this case, the time cost and financial cost of releasing ground stress are relatively high, and the end standard for releasing ground stress is preferably selected as no high ground stress area.

[0093] Accordingly, a device for releasing ground stress is also provided, comprising a vehicle body 1, a visual detection device, a control module, a rock drilling device 2, a first driving device 6 and a second driving device 5;

[0094] The visualization detection device includes an ultrasonic detector 3 and a camera 4, which are fixedly arranged on the first driving device 6 and perform linear motion and rotational motion under the action of the first driving device 6. The ultrasonic detector 3 is used to detect the ultrasonic velocity value of the target rock burst section and transmit it to the control module, and the camera 4 is used to take an image of the target rock drilling area and transmit it to the control module;

[0095] Specifically, the ultrasonic detector 3 and the camera 4 can realize the rotational motion through an automatic rotating device, and no limitation is made to the specific device herein;

[0096] The control module is arranged in the vehicle body 1 and is connected to the remote monitoring center through the wireless transmission module, and is used to receive ultrasonic velocity values ​​and images, and obtain a visualized geostress zoning diagram of the target rockburst section according to the method for releasing geostress based on geostress visualization, and transmit the visualized geostress zoning diagram to the remote monitoring center;

[0097] The remote monitoring center includes a monitoring server, a storage server and a touch display. The monitoring server is connected to the controller through a wireless transmission module, the storage server is connected to the monitoring server, and the touch display is connected to the monitoring server. The touch display is used to display a geostress zoning map and send control commands to the monitoring server, which in turn send control commands to the control module through the monitoring server, and the control module controls the corresponding device to complete the corresponding command.

[0098] The rock drilling device 2 is fixedly arranged on the second driving device 5 and performs linear motion under the action of the second driving device 5. The rock drilling device 2 is used to perform rock drilling according to the target route according to the method of releasing ground stress based on ground stress visualization under the control of the control module;

[0099] The first drive device 6 and the second drive device 5 are both installed on the vehicle body 1 and are connected to the control module. The linear motion of the first drive device 6 and the second drive device 5 can be achieved by the robotic arm and the propulsion beam. The structure of the robotic arm and the propulsion beam, and the connection relationship between the robotic arm and the propulsion beam and the vehicle body are existing structures, and their specific structures are not limited here.

[0100] Through the above-mentioned device, a visual image of the ground stress distribution of the target rockburst section can be obtained and transmitted to the remote monitoring center through the wireless transmission module. The control module can also be controlled by the remote monitoring center to control the rock drilling device to drill along the target route, further reducing the manpower cost invested in rock drilling to release ground stress and improving safety.

[0101] In this embodiment, the rock drilling device 2 includes a rock drilling gun that can be driven to move forward and backward. The rock drilling gun that can be driven to move forward and backward can be realized by a slide groove and an electric push rod. The rock drilling gun is set on a slide plate in the slide groove. The electric push rod pushes the slide plate to slide by extending and retracting to realize the forward and backward movement of the rock drilling gun. Figure 4 As shown, the device for achieving the forward and backward movement of the rock drill gun is not limited here;

[0102] The rock drill gun comprises a drill bit 201, a connecting rod 202 and a hollow rock drill gun body 203;

[0103] The connecting rod 202 passes through the rock drill body 203 and one end is fixedly connected to the drill bit 201. The connecting rod 202 can be driven to rotate. The rock drill body 203 is fixedly arranged on the first driving device 5 through a support seat. If the rock drill is moved forward and backward by a slide plate, the rock drill body 203 is fixedly arranged on the slide plate through a support seat. The slide plate is arranged in a slide groove, and the slide groove is arranged on the first driving device 5. The connecting rod 202 can be driven to rotate by a motor.

[0104] The rock drill gun is used to gradually drill holes in the area to be drilled to release the ground stress, thereby avoiding rock burst.

[0105] In this embodiment, a number of through holes are evenly arranged on the rock drilling gun body 203. After the gun body enters the rock mass, the holes of the gun body begin to communicate with the cracks or fissure systems inside the surrounding rock. Through the above-mentioned design, a channel can be created to guide and release ground stress, thereby improving construction safety.

[0106] In this embodiment, a cooling device is also included, which is used to soften the surrounding rock on the target route and reduce the temperature of the drill bit 201. The cooling device includes a water gun 7 that can be driven to move forward and backward, a high-pressure water storage chamber 8, a water supply component 9 and a cooling water tank 10; the water gun 7 can be driven to move forward and backward by a motor or a mechanical arm, and the device for achieving its forward and backward movement is not limited here;

[0107] The cooling water tank 10 is arranged in the vehicle body 1 and is used for cooling water; the water supply assembly 9 is used for supplying cooling water into the high-pressure water storage chamber 8, and the water supply assembly 9 includes a water supply pipe and a water pump, and the water pump is used for pumping the cooling water in the cooling water tank 10 to the high-pressure water storage chamber 8 through the water supply pipe; the high-pressure water storage chamber 8 is connected to the water gun 7 and is used for providing high-pressure cooling water to the water gun 7, and the water gun 7 is used for spraying cooling water to the surrounding rock on the target route in the target rock drilling area and the drill bit;

[0108] By means of the above device, the target rock drilling area can be softened to reduce the probability of rock burst.

[0109] Accordingly, an electronic device is also provided, comprising:

[0110] A memory and a processor, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the method for releasing ground stress based on ground stress visualization is implemented.

[0111] Correspondingly, a readable storage medium is also provided, in which computer instructions are stored. When the computer instructions are executed by a processor, the above-mentioned method for releasing ground stress based on ground stress visualization is implemented.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for releasing ground stress based on ground stress visualization, characterized in that: The following steps are involved: S1. Acquire an image of the target drilling area; S2. Performing geostress zoning on the target rockburst section closest to the target rock drilling area, and mapping it on the image of the target rock drilling area, to obtain a visualized geostress zoning map of the target rockburst section; The geostress zoning is divided into high geostress area, relatively high geostress area and general geostress area; S3. Determine the distance L between the target rockburst section and the target drilling area; S4. Based on the visualized geostress zoning map, drilling is performed in the target drilling area along the target route to release the geostress, and the drilling depth is L+c; Among them, the target route is the boundary line between the higher ground stress area and the general ground stress area, c represents the depth correction value, c>0; S5. Obtain a visualized geostress zoning diagram of the target rockburst section after drilling, and determine whether there is a high geostress area in the visualized geostress zoning diagram of the target rockburst section after drilling. If yes, return to step S4; if not, the geostress release is terminated.

2. The method for releasing ground stress based on ground stress visualization according to claim 1, characterized in that: The distance L is determined by the following method: Select any target point in the high ground stress area or relatively high ground stress area of ​​the target rockburst section, obtain the ultrasonic velocity value and time from any two detection points to the target point, and the distance between the two detection points, and calculate the distance L based on the above data. The calculation formula is as follows: x1=v1t1 x2=v2t2 Among them, x1 represents the distance from the first detection point to the target point, v1 and t1 correspond to the ultrasonic wave velocity and time from the first detection point to the target point, x2 represents the distance from the second detection point to the target point, v2 and t2 correspond to the ultrasonic wave velocity and time from the second detection point to the target point, and x represents the distance between the first detection point and the second detection point.

3. The method for releasing ground stress based on ground stress visualization according to claim 1, characterized in that: The target rockburst section is zoned for ground stress by the following method: Obtain the ultrasonic velocity values ​​at each position of the target rockburst section and the reference wave velocity value V1, and compare the ultrasonic velocity values ​​at each position with the reference wave velocity value V1: If the ultrasonic velocity value at a location is greater than 1.5V1, it is a high geostress area; If the ultrasonic velocity value at a location is greater than 1.3V1 and less than or equal to 1.5V1, it is a high ground stress area; If the ultrasonic velocity value at the grid is less than or equal to 1.3V1, it is a general geostress area; The reference wave velocity value V1 is obtained by detecting the ultrasonic wave velocity value of a rock sample having the same lithology as the target rock drilling area.

4. The method for releasing ground stress based on ground stress visualization according to any one of claims 1 to 3, characterized in that: Before each drilling, the process also includes spraying cooling water on the surrounding rock on the target route in the target drilling area.

5. A device for releasing ground stress, characterized in that: It includes a vehicle body, a visual detection device, a control module, a rock drilling device, a first drive device and a second drive device; The visualization detection device includes an ultrasonic detector and a camera, which are fixedly arranged on the first driving device and perform linear motion and rotational motion under the action of the first driving device. The ultrasonic detector is used to detect the ultrasonic velocity value of the target rock burst section and transmit it to the control module, and the camera is used to capture the image of the target rock drilling area and transmit it to the control module. The control module is arranged in the vehicle body and is connected to the remote monitoring center through the wireless transmission module, and is used to receive ultrasonic velocity values ​​and images, and obtain a visualized in-situ stress zoning diagram of the target rockburst section according to the in-situ stress release method based on in-situ stress visualization according to any one of claims 1 to 4, and transmit the visualized in-situ stress zoning diagram to the remote monitoring center; The rock drilling device is fixedly arranged on the second driving device and performs linear motion under the action of the second driving device. The rock drilling device is used to perform rock drilling according to a target route according to the method for releasing ground stress based on ground stress visualization according to any one of claims 1 to 4 under the control of the control module; The first driving device and the second driving device are both installed on the vehicle body and are control-connected to the control module.

6. The device for releasing ground stress according to claim 5, characterized in that: The rock drilling device includes a rock drilling gun that can be driven to move forward and backward; The rock drill gun comprises a drill bit, a connecting rod and a hollow rock drill gun body; The connecting rod passes through the rock drill body and one end is fixedly connected to the drill bit. The connecting rod can be driven to rotate, and the rock drill body is fixedly arranged on the second driving device through a supporting seat.

7. The device for releasing ground stress according to claim 6, characterized in that: A plurality of through holes are evenly arranged on the rock drilling gun body.

8. The device for releasing ground stress according to claim 5, characterized in that: It also includes a cooling device for softening surrounding rocks on the target route and reducing the temperature of the drill bit, the cooling device including a water gun that can be driven to move forward and backward, a high-pressure water storage chamber, a water delivery assembly and a cooling water tank; The cooling water tank is arranged in the vehicle body for cooling water; the water supply assembly is used to supply cooling water into the high-pressure water storage chamber; the high-pressure water storage chamber is connected to the water gun for providing high-pressure cooling water to the water gun, and the water gun is used to spray cooling water to the surrounding rock on the target route in the target rock drilling area and the drill bit.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the method for releasing ground stress based on ground stress visualization according to any one of claims 1 to 4 is implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores computer instructions, and when the computer instructions are executed by a processor, the method for releasing ground stress based on ground stress visualization according to any one of claims 1 to 4 is implemented.

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