Drilling hole wall reinforcing method

Abstract

The invention discloses a drill hole wall reinforcing method which comprises the following steps: filling repairing slurry into a slurry spraying pump, starting a lifting mechanism to drive a hole protector to gradually descend in a drill hole, peeping the hole wall of each part of the drill hole by using a night vision panoramic camera, and transmitting a hole wall image to a control system in real time; when the recognition module of the control system recognizes that a crack exists in the current hole wall image, the hole protector stops descending, the control system controls the rotating base to rotate, after the nozzle is aligned with the crack position, the guniting pump is started to conduct guniting repairing on the hole wall at the crack position, and meanwhile the lifting mechanism drives the hole protector to ascend and descend properly so that the crack can be completely covered with grout. According to the method, the purposes of accurate detection, positioning and quantitative guniting repair and improvement of the pore-forming rate can be achieved, the cost of repeated drilling due to scrapped deep holes can be reduced, and the cost is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine rock drilling and borehole detection, and particularly relates to a method for reinforcing the borehole wall. Background Art

[0002] There are often original defects such as holes and cracks inside the ore rock mass, which are likely to cause the initiation, development and penetration of cracks, leading to the collapse of the borehole wall. Therefore, it is usually necessary to grout and support the borehole, and the grouting methods include grouting during the drilling process and grouting after the hole is formed. Grouting during the drilling process injects slurry into the hole through the drill pipe or grouting pipe, and grouts while drilling; grouting after the hole is formed is to grout the borehole wall or the bottom of the hole through the pre-buried grouting pipe after the drilling is completed. However, the above grouting methods reinforce the entire borehole and cannot make targeted local reinforcement, which will undoubtedly increase the reinforcement cost, and the grouting equipment is complex, and there are often problems such as the hole wall being broken due to excessive pressure. Summary of the Invention

[0003] The main purpose of the present invention is to provide a method for reinforcing the borehole wall, aiming to achieve accurate detection and positioning of borehole cracks, realize quantitative shotcreting repair, and achieve the purpose of saving resources and reducing borehole costs.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A borehole wall reinforcement device includes a lifting mechanism, a hole protector and a control system. The lifting mechanism drives the hole protector to lift and lower in the borehole. The hole protector includes a base and a rotating seat rotatably arranged at the bottom of the base. A driving motor for driving the rotating seat to vertically rotate in the borehole is arranged on the base. A night vision panoramic camera for obtaining the image of the borehole wall is installed on the rotating seat. Two pressing plates are symmetrically arranged on the side of the rotating seat. The outer side surface of the pressing plate is an arc surface adapted to the borehole wall of the borehole. A driving member for driving the two pressing plates to approach or move away from the borehole wall is arranged on the rotating seat. A grouting pump and a nozzle are arranged on the rotating seat. The nozzle is connected to the grouting pump and the spraying direction is towards the borehole wall. The control system is connected to the lifting mechanism, the driving motor, the night vision panoramic camera, the driving member and the grouting pump.

[0005] Specifically, the lifting mechanism includes a walking trolley arranged outside the borehole and a winch arranged on the walking trolley. The lifting rope of the winch is connected to the top of the base.

[0006] Specifically, a battery for supplying power to the grouting pump, the night vision panoramic camera and the driving member is arranged inside the rotating seat.

[0007] Specifically, the shape of the rotating seat is cylindrical.

[0008] Specifically, a distance sensor is further provided at the bottom of the rotating base.

[0009] Specifically, the driving members are two hydraulic cylinders.

[0010] A method for reinforcing the borehole wall includes the following steps: Pour the repair slurry into the grouting pump, start the lifting mechanism to drive the hole protector to gradually descend in the borehole, use the night vision panoramic camera to observe the borehole walls at various positions, and transmit the images of the borehole walls to the control system in real time. When the recognition module of the control system recognizes that there are cracks in the current borehole wall image, the hole protector stops descending. The control system controls the rotation of the rotating base to align the nozzle with the crack position, and then starts the grouting pump to spray and repair the borehole wall at the crack position. At the same time, the lifting mechanism drives the hole protector to rise and fall appropriately to ensure that the slurry completely covers the crack. After that, the control system controls the rotation of the rotating base so that one of the pressing plates is aligned with the crack position, and then the driving members drive the two pressing plates to abut against the respective opposite borehole walls to compact the slurry, accelerating the adhesion and curing of the slurry to the crack. Then, the driving members drive the two pressing plates to retract and disengage from the borehole wall, and the repair effect is observed again. When it is observed that the cracks in the borehole wall have been completely repaired, the lifting mechanism drives the hole protector to continue descending in the borehole until the observation and repair of the entire borehole wall are completed.

[0011] Compared with the prior art, at least one embodiment of the present invention has the following beneficial effects: 1. The entire reinforcement device includes two parts: a lifting mechanism and a hole protector. The hole protector is equipped with a night vision panoramic camera and a grouting pump. When the lifting mechanism drives the hole protector to rise and fall in the borehole, the night vision panoramic camera observes the borehole to obtain the position of the crack, realizing quantitative and accurate spraying and repair. The entire device has a simple structure, is light and flexible, does not require inserting a grouting pipe into the borehole, and does not require a complex high-pressure grouting system.

[0012] 2. The pressing plates can be telescoped by the driving members, can adapt to repairing borehole walls with various diameters, can meet the requirements of different projects, make up for the gap in the borehole grouting and hole protection technology, and greatly improve the stability and integrity of the borehole.

[0013] 3. This method observes the borehole through the night vision panoramic camera to obtain the position of the crack. At the same time, combined with the lifting of the lifting mechanism and the rotation of the rotating base, the nozzle can be driven to move up, down, left and right, realizing full-round spraying coverage of the crack position. It can not only achieve accurate detection and positioning of the crack, but also realize quantitative spraying and repair, achieving the purpose of saving resources and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 is a working schematic diagram of the drilling hole wall reinforcement device provided by the embodiment of the present invention; Figure 2 is a top view of the drilling hole wall reinforcement device provided by the embodiment of the present invention; Figure 3 is an internal schematic diagram of the rotating seat provided by the embodiment of the present invention; Wherein: 1. Hole protector; 101. Base; 102. Rotating seat; 103. Driving motor; 2. Pressure plate; 3. Hydraulic cylinder; 4. Nozzle; 5. Walking trolley; 6. Drilling hole; 7. Winch; 8. Night vision panoramic camera; 9. Battery; 10. Distance sensor; 11. Grout pump; 12. Lifting rope. Specific embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0018] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0019] SeeFigures 1 - 3 , a borehole wall reinforcement device, comprising a lifting mechanism, a hole protector 1 and a control system. The lifting mechanism is used to drive the hole protector 1 to lift and lower in the borehole 6. The hole protector 1 includes a base 101 and a rotating seat 102 rotatably arranged at the bottom of the base 101. A driving motor 103 for driving the rotating seat 102 to rotate vertically (rotate along the circumferential direction of the borehole) in the borehole is provided on the base 101. A night vision panoramic camera 8 for obtaining a 360° image of the hole wall (composed of a plurality of cameras arranged on the side of the rotating seat 102) is installed on the rotating seat 102. Two pressing plates 2 are symmetrically arranged on the side of the rotating seat 102. The outer side surface of the pressing plate 2 is an arc surface adapted to the hole wall of the borehole. A driving member for driving the two pressing plates 2 to approach or move away from the hole wall is provided on the rotating seat 102. A grout spraying pump 11 and a nozzle 4 are provided on the rotating seat 102. The nozzle 4 is connected to the grout spraying pump 11 and the spraying direction is towards the corresponding hole wall. The control system is connected to the lifting mechanism, the night vision panoramic camera 8, the driving motor 103, the driving member and the grout spraying pump 11. The night vision panoramic camera 8 can conduct panoramic detection in the borehole, obtain a 360° image of the hole wall, transmit the hole image to the operator's receiving end, and determine information such as the trace length, attitude and orientation of the joint fissures through the image processing end (recognition module) of the control system.

[0020] When using the above reinforcement device to repair the borehole, pour the repair grout into the grout spraying pump 11, start the lifting mechanism to drive the hole protector 1 to gradually descend in the borehole, use the night vision panoramic camera 8 to observe each part of the hole wall of the borehole, and transmit the hole wall image to the control system in real time and display it on the display screen in real time for construction personnel to observe; When the recognition module of the control system recognizes that there are fissures to be repaired in the current hole wall image, the hole protector 1 stops descending. The control system controls the rotating seat 102 to rotate so that the nozzle 4 is aligned with the fissure position, and then starts the grout spraying pump 11 to spray and repair the hole wall at the fissure position. At the same time, the lifting mechanism drives the hole protector 1 to rise and fall appropriately so that the grout completely covers the fissure; After that, the control system controls the rotating seat 102 to rotate so that one of the pressing plates 2 is aligned with the fissure position, and the driving member drives the two pressing plates 2 to abut against the respective opposite hole walls to compact the grout and accelerate the adhesion and curing of the grout to the fissure; After that, the driving member drives the two pressing plates 2 to retract and disengage from the hole wall, and observe the repair effect for the second time. When it is observed that the hole wall fissures have been completely repaired, the lifting mechanism drives the hole protector 1 to continue to descend in the borehole until the observation of the entire hole wall of the borehole and the repair of the existing fissures are completed.

[0021] In this embodiment, the entire reinforcement device includes a lifting mechanism and a hole protector 1. The hole protector 1 is equipped with a night vision panoramic camera 8 and a grouting pump 11. When the lifting mechanism drives the hole protector 1 to lift and lower in the drill hole, the night vision panoramic camera 8 peeks into the drill hole to obtain the position of the fissure, realizing quantitative and precise grouting repair. The entire device has a simple structure, is light and flexible, does not require inserting a grouting pipe into the drill hole, and does not require a complex high-pressure grouting system either.

[0022] In addition, the pressing plate 2 can be telescoped by a driving member, which can adapt to repairing hole walls of various diameters and meet the requirements of different projects, making up for the gap in the hole protection technology of drilling grouting and greatly improving the stability and integrity of the drill hole. Combining the lifting of the lifting mechanism and the rotation of the rotating seat 102, the nozzle 4 can be driven to move up, down, left, and right, realizing full-round grouting coverage of the fissure position. It can not only achieve precise detection and positioning of the fissure, but also realize quantitative grouting repair, achieving the purpose of saving resources and reducing costs.

[0023] See Figure 1 , it can be understood that the lifting mechanism includes a walking trolley 5 arranged outside the drill hole and a winch 7 arranged on the walking trolley 5. The walking trolley 5 includes a vehicle frame and wheels arranged at the bottom of the vehicle frame. The lifting rope 12 of the winch 7 is connected to the top of the base 101. The winch 7 can be an electric winch 7 or a hydraulic winch 7. During operation, move the walking trolley 5 to the orifice of the drill hole to be repaired, debug the device and pour the repair slurry into the grouting pump 11 at the same time. Start the winch 7 to lower the hole protector 1. After the recognition module recognizes the fissure, the lifting is paused, the nozzle 4 nozzle is adjusted, and the grouting pump 11 is started. If the coverage is good, start the drive motor to push the pressing plate 2 and observe the repair effect again after compaction.

[0024] To ensure that the hole protection work can be carried out efficiently and accurately in a dark hole, the main control board of the winch 7 is controlled by the signal of the control system. When a fissure in the hole wall is detected, the lifting is paused to achieve full-automatic detection and positioning. Continue to use the night vision panoramic camera 8 to detect inside the hole, and a 360° image of the hole wall can be obtained. The fissure image inside the hole is transmitted to the operator's receiving end, and the nozzle position is adjusted through image processing while determining the shape, size, and orientation information of the pores, so as to achieve efficient and accurate detection and positioning.

[0025] In this embodiment, when a hole to be detected and repaired is found, the device can be moved to an appropriate position at the orifice of the hole to be detected and repaired by means of the trolley. The operation is simple and labor-saving, which can effectively prevent the collapse of the drill hole and the loosening of the rock mass, reduce the infiltration of groundwater at the same time, improve the drill hole environment, and is applicable to various geological environments, such as fractured rock masses, soft strata, etc. The telescopic pressing plate 2 can adapt to repairing hole walls of various diameters and meet the requirements of different projects.

[0026] See Figure 1 and Figure 3, Specifically, a battery 9 for powering the shotcrete pump 11, the night vision panoramic camera 8, and the driving member is provided inside the rotating base 102. The entire rotating base 102 is cylindrical in shape, and the driving members are two hydraulic cylinders 3. A distance sensor 10 is also provided at the bottom of the rotating base 102.

[0027] In this embodiment, to ensure that the sprayed hole protection material can firmly adhere to the wall and accelerate curing, a telescopic pressing plate 2 is used. The hole protection material sprayed on the hole wall is evenly smeared by means of pushing, and the rotating base 102 is rotated to apply pressure in multiple directions to make the hole protection material present a more uniform and compact state. Inside the hole, to prevent the hole protector 1 from colliding with the rock blocks that fall across or protrude when descending, a distance sensor 10 is provided to detect abnormal protrusions on the hole wall. When an obstacle is within the sensing range, an alarm is given through a buzzer alarm, and the equipment lifting is automatically paused. Through the design of the human-machine interface and the optimization of the operating system, the equipment automatically detects start and stop using programming algorithms, making the operation simpler and more intuitive, and reducing the operation complexity and technical requirements of the construction personnel.

[0028] Meanwhile, if the above-mentioned invention of the present disclosure discloses or involves components or structural members that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (for example, manufactured by integral casting process) (except where it is obviously impossible to adopt the integral forming process).

[0029] In addition, unless otherwise stated, the terms used to represent the positional relationship or shape in any of the above-mentioned technical solutions disclosed by the present invention include states or shapes that are approximate, similar, or close to it. Any component provided by the present invention can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0030] The above embodiments are merely examples clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the embodiments here. And the obvious changes or variations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A method for reinforcing a borehole wall, using a borehole wall reinforcement device for reinforcement, characterized in that: The reinforcement device comprises a lifting mechanism, a hole protector (1) and a control system, wherein the lifting mechanism drives the hole protector (1) to lift and lower in a borehole (6), the hole protector (1) comprises a base (101), a rotating base (102) rotatably arranged at the bottom of the base (101), the base (101) is provided with a driving motor (103) for driving the rotating base (102) to rotate vertically in the borehole (6), the rotating base (102) is provided with a night vision panoramic camera (8) for acquiring an image of the borehole wall, the rotating base (102) is provided with a spraying pump (11) and a nozzle (4), the nozzle (4) is connected to the spraying pump (11), and the spraying direction is toward the borehole wall, and the control system is connected to the lifting mechanism, the driving motor (103), the night vision panoramic camera (8), and the spraying pump (11); The method comprises the following steps: injecting repair slurry into a spraying pump (11), starting a lifting mechanism to drive a hole protector (1) to gradually descend in a borehole (6), using a night vision panoramic camera (8) to spy on the borehole wall at various locations, and transmitting the borehole wall image to a control system in real time; When the recognition module of the control system recognizes that there is a crack in the current hole wall image, the hole protector (1) stops descending, and the control system controls the rotating seat (102) to rotate so that the nozzle (4) is aligned with the crack position, and then the spraying pump (11) is started to spray the hole wall at the crack position for repair. At the same time, the lifting mechanism drives the hole protector (1) to rise and fall appropriately so that the slurry completely covers the crack, thereby achieving drilling reinforcement.

2. The method for reinforcing the borehole wall according to claim 1, characterized in that: Two pressing plates (2) are symmetrically arranged on the side of the rotating seat (102), the outer side surfaces of the pressing plates (2) being arc-shaped surfaces adapted to the hole wall of the drill hole (6), and a driving member for driving the two pressing plates (2) to move closer to or away from the hole wall is arranged on the rotating seat (102).

3. After the slurry completely covers the crack, the control system controls the rotating seat (102) to rotate so that one of the pressing plates (2) is aligned with the crack position, and the driving member drives the two pressing plates (2) to abut against the respective opposite hole walls to compact the slurry, thereby accelerating the adhesion and solidification of the slurry to the crack; Afterwards, the driving member drives the two pressing plates (2) to be retracted and separated from the hole wall. When it is observed that the cracks in the hole wall have been completely repaired, the lifting mechanism drives the hole protector (1) to continue to descend in the borehole until the entire borehole wall is inspected and the existing cracks are repaired.

4. The method for reinforcing the borehole wall according to claim 1, characterized in that: The lifting mechanism comprises a trolley (5) arranged outside the drilling hole (6) and a winch (7) arranged on the trolley (5), and a lifting rope (12) of the winch (7) is connected to the top of the base (101).

5. The method for reinforcing the borehole wall according to claim 2, characterized in that: A battery (9) for supplying power to the spray pump (11), the night vision panoramic camera (8), and the driving member is provided inside the rotating seat (102).

6. The method for reinforcing the borehole wall according to claim 1, characterized in that: The rotating seat (102) is formed in a cylindrical shape.

7. The method for reinforcing the borehole wall according to claim 1, characterized in that: A distance sensor (10) is also provided at the bottom of the rotating seat (102).

8. The method for reinforcing the borehole wall according to claim 2, characterized in that: The driving components are two hydraulic cylinders (3).

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