A device and method for pre-reinforcement of a goaf section highway

Abstract

The present invention discloses an advance pre-reinforcement device and method for a goaf section highway, which relates to the technical field of grouting reinforcement; the device comprises an anchor rod member, on which a closed connecting member is fixedly installed, the anchor rod member is used to be buried in the soil above the goaf section to reinforce the soil above the goaf section; the anchor rod member is installed with a drilling auxiliary member; a retained anchor rod detection member is installed inside the drilling auxiliary member; the anchor rod detection member is used to detect anchor rods near the inside of the goaf section; a suction chamber is used in conjunction with an energized sheet, which can facilitate staff to understand the comprehensiveness of grouting and ensure that the slurry of each grouting anchor rod can be continuous and integrated after grouting; so as to solve the problem that the current advance pre-reinforcement device for a goaf section highway is not convenient for staff to know the grouting flow diffusion position, and there is a risk of squeezing and colliding the anchor rods inside the goaf.

Description

Technical Field

[0001] The invention relates to the technical field of grouting reinforcement, in particular to a device and method for pre-reinforcement of a goaf section highway. Background Art

[0002] In actual highway construction, grouting reinforcement is usually required to prevent the highway from sinking after construction. Grouting anchors are a common reinforcement tool. By injecting cement slurry into the cracks in the ground, the ground is filled and reinforced to improve the stability of subsequent road construction. However, the current grouting anchors do not make it easy for workers to know the location of grouting flow and diffusion, nor to judge the comprehensiveness of grouting. The grouting amount is usually determined by manual experience. At the same time, the upper layer of slurry is prone to seepage downward, which makes it difficult to absorb the leaked slurry from the lower layer to replenish the upper filling layer. Direct overfilling of slurry will cause the weight of the goaf to be too large, further affecting safety. When grouting reinforcement is carried out, there is a risk of squeezing and colliding with the anchor rods inside the goaf, which is not convenient for automatic monitoring and protection. Because in goaf areas such as artificial culverts, the inner wall of the goaf is also drilled with anchor rods for reinforcement and protection. When the grouting drilling depth is large, it directly collides and squeezes the anchor rods reinforced on the inner wall of the goaf, which will directly affect the stability of the goaf and further affect the quality of roadbed construction.

[0003] To this end, we propose a device and method for pre-reinforcement of highway in goaf sections. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for advance pre-reinforcement of a goaf section road, so as to solve the problem raised in the above background technology that the current advance pre-reinforcement device for a goaf section road is not convenient for workers to know the grouting flow diffusion position, and there is a risk of squeezing and colliding the anchor rods inside the goaf.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for pre-reinforcement of a goaf section highway, comprising an anchor member, on which a closed connector is fixedly mounted, the anchor member being used to be buried in the soil above the goaf section to reinforce the soil above the goaf section; a drilling auxiliary member being mounted on the anchor member;

[0006] A retained anchor rod detection component is installed inside the drilling auxiliary component; the anchor rod detection component is used to detect anchor rods inside the goaf section;

[0007] A drilling clutch is installed on the anchor rod; the drilling clutch is used to control the feeding stop; a slurry fixed point is inserted into the anchor rod; the slurry fixed point is used to position the slurry supply;

[0008] The anchor rod comprises: a grouting anchor rod, on which an indicator light is fixedly mounted; the grouting anchor rod is provided with a through hole for grouting circulation; and the grouting anchor rod is used to be inserted into the soil above the goaf section.

[0009] Preferably, the anchor rod also includes: a suction chamber, a suction chamber is provided at the bottom of the grouting anchor rod, and a circle of through holes is provided on the outside of the suction chamber on the grouting anchor rod; the suction chamber is used to suck back the slurry; a suction hole is provided on the pipe wall of the grouting anchor rod; two power-carrying plates are fixedly installed inside the suction hole, and a gap is provided between the two power-carrying plates; the two power-carrying plates and the indicator light are connected in series with a power supply.

[0010] Preferably, the anchor rod further comprises: a suction pipe, the suction pipe is fixedly mounted on the grouting anchor rod; the suction pipe is externally connected to a suction pump; the suction pipe is connected to the suction chamber.

[0011] Preferably, the closed connecting piece includes: a closed tube, which is fixedly sleeved on the grouting anchor rod; the outer side of the bottom of the closed tube is an inclined structure; a closed flange is fixedly mounted on the closed tube, and a circle of through holes is provided on the outer side of the closed flange; the circle of through holes on the closed flange is used to insert bolts for installation on the ground.

[0012] Preferably, the drilling auxiliary component includes: a drilling head, which is installed on the grouting anchor rod; the end of the drilling head is a bevel structure; the drilling head is provided with a spiral blade; a power connection plate is fixedly installed on the inner side of the drilling head, and the inner side of the power connection plate is a bevel structure; the drilling head and the power connection plate are made of titanium metal.

[0013] Preferably, the anchor rod detection part includes: a detection ball sleeve, which is threadedly connected to the drilling head; an adapter ball head is sleeved inside the detection ball sleeve; a circle of pulling springs is fixedly installed on the top of the adapter ball head, and a circle of pulling springs has a V-shaped spring structure; the ends of a circle of pulling springs are respectively fixedly installed on the inner side of the detection ball sleeve; a telescopic shaft is slidably inserted on the adapter ball head, and a detection magnet is fixedly installed on the end of the telescopic shaft, and a conductive coating is provided on the outside of the detection magnet; a tension spring is sleeved on the telescopic shaft, and the tension spring on the telescopic shaft is connected between the adapter ball head and the detection magnet.

[0014] Preferably, the drilling rig clutch includes: a fixed cylinder, which is threadedly connected to the grouting anchor rod; a connecting column is slidably inserted on the fixed cylinder; the connecting column is used to connect the drilling rig; an electromagnet is fixedly installed inside the connecting column; a circle of positioning blocks is slidably inserted on the connecting column, and a circle of positioning blocks are respectively inserted on the inner side of the fixed cylinder; the electromagnet is used to magnetically attract the positioning blocks; outward-expanding spring pieces are respectively fixedly installed on the inner sides of a circle of the positioning blocks, and the ends of a circle of outward-expanding spring pieces are respectively attached to the outside of the electromagnet.

[0015] Preferably, the slurry fixed point part includes: a grouting regulating pipe, which is slidably inserted into the inside of the grouting anchor rod; a material pump connector is fixedly installed at the tail of the grouting regulating pipe; and the material pump connector is used to threadably connect the slurry outlet pipe joint of the grouting pump.

[0016] Preferably, the slurry fixing part also includes: a slurry outlet groove, a circle of slurry outlet groove is opened on the outside of the front end of the grouting adjustment tube; two retaining rings are fixedly installed on the front end of the grouting adjustment tube, and the two retaining rings are respectively located on both sides of a circle of slurry outlet groove; the retaining ring is sleeved inside the grouting anchor rod.

[0017] A method for pre-reinforcement of a goaf section highway, comprising the following steps:

[0018] 1) Use multiple grouting anchors to insert them into the ground, and manually lift the grouting adjustment pipe to adjust the height of the grouting channel and control the grouting position;

[0019] 2) When the slurry leaks to the outside of the suction chamber on the grouting anchor rod adjacent to the grouting anchor rod being grouted, the slurry liquid level in the suction chamber gradually rises. When the slurry liquid surface contacts the two energized plates, the moisture in the slurry conducts the circuit, and the indicator light lights up to indicate the slurry diffusion range.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention adopts a suction chamber in conjunction with an energized plate, which can facilitate the staff to understand the comprehensiveness of grouting, ensure that the slurry can be continuously integrated after grouting of each grouting anchor rod, ensure the reinforcement effect, and facilitate the staff to stop grouting work in time to avoid exceeding the grouting amount. It is convenient for the staff to perform back suction when excessive grouting seeps close to the inner wall of the goaf, which can improve the flexibility of actual grouting operations, avoid the problem that traditional grouting anchor rods can only apply pressure and are not convenient for knowing the diffusion range of the slurry, and can actively back suction part of the seeped slurry, and can subsequently grout from top to bottom again to reduce the problem of uneven density caused by downward leakage. At the same time, the back suction method can avoid excessive slurry consumption and increase the burden on the goaf, and the back-absorbed slurry can be collected and reused.

[0022] The use of anchor rod detection parts can be used to detect the safety during the grouting exploration process, to avoid the situation in which the drilling auxiliary parts continue to drill downwards after approaching the anchor rods originally reinforced in the goaf during the grouting exploration process, which will damage the reinforced anchor rods in the goaf and aggravate safety hazards. It ensures that this structure only targets the soil in the goaf during the exploration process, and can be more suitable for the construction of ground roads built above underground goaf roads or roadbeds above culverts. In conjunction with the drilling rig clutch, the drilling rig power can be disconnected in time, and the exploration can be stopped in time to avoid further damage.

[0023] The use of slurry fixed-point parts allows workers to flexibly adjust the grouting position, and can make real-time adjustments based on the situation. At the same time, grouting can be carried out locally on the grouting anchor rods using the slurry outlet grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a device for pre-reinforcement of a goaf section highway according to the present invention;

[0025] Figure 2 This is a cross-sectional view of the internal structure of a device for pre-reinforcement of a goaf section highway according to the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the closed connector of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the anchor rod of the present invention;

[0028] Figure 5 For the present invention Figure 3 A magnified view of the structure of the middle B region;

[0029] Figure 6 For the present invention Figure 2 A magnified view of the structure of the middle C region;

[0030] Figure 7 For the present invention Figure 3 A magnified view of the structure of the middle E region;

[0031] Figure 8 This is a schematic diagram of the structure of the drilling rig clutch of the present invention;

[0032] Figure 9 For the present invention Figure 3 A magnified view of the structure of the middle G region;

[0033] Figure 10 This is a schematic diagram of the structure of the slurry fixed point component of the present invention.

[0034] In the figure: 1. Anchor rod component; 101. Grouting anchor rod; 102. Indicator light; 1011. Suction chamber; 1012. Suction hole; 1013. Power supply plate; 103. Suction tube; 2. Closed connector; 201. Closing cylinder; 202. Closing flange; 3. Drilling auxiliary component; 301. Drilling head; 302. Power supply plate; 4. Anchor rod detection component; 401. Detection ball sleeve; 402. Adapter ball head; 403. Pulling spring; 404. Telescopic shaft; 405. Detection magnet; 5. Drilling rig clutch component; 501. Fixed cylinder; 502. Connecting column; 503. Electromagnet; 504. Positioning plug; 505. Outward expansion spring; 6. Slurry fixed point component; 601. Grouting adjustment pipe; 6011. Slurry outlet groove; 602. Material pump connector; 603. Retaining ring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 10 As shown:

[0037] The present invention provides a technical solution: an advance pre-reinforcement device for a goaf section highway, comprising an anchor rod member 1, a closed connecting member 2 fixedly mounted on the anchor rod member 1, the anchor rod member 1 being used to be buried in the soil above the goaf section to reinforce the soil above the goaf section; a drilling auxiliary member 3 is mounted on the anchor rod member 1; a retained anchor rod detection member 4 is mounted inside the drilling auxiliary member 3; the anchor rod detection member 4 is used to detect anchor rods near the inside of the goaf section; a drilling rig clutch member 5 is mounted on the anchor rod member 1; the drilling rig clutch member 5 is used to control the stop of feeding; a slurry fixed point member 6 is inserted into the anchor rod member 1; the slurry fixed point member 6 is used to position the supply of slurry; the anchor rod member 1 comprises: a grouting anchor rod 101 and an indicator light 102, the grouting anchor rod 101 is fixedly mounted with the indicator light 102; the grouting anchor rod 101 is provided with a through hole for grouting circulation; the grouting anchor rod 101 is used to be inserted into the soil above the goaf section.

[0038] Among them, the anchor rod 1 also includes: a suction chamber 1011, a suction hole 1012 and an energizing plate 1013. The suction chamber 1011 is provided at the bottom of the grouting anchor rod 101, and a circle of through holes is provided on the outside of the suction chamber 1011 on the grouting anchor rod 101; the suction chamber 1011 is used to suck back the slurry; a suction hole 1012 is provided on the pipe wall of the grouting anchor rod 101; two energizing plates 1013 are fixedly installed inside the suction hole 1012, and a space is provided between the two energizing plates 1013; the two energizing plates 1013 and the indicator light 102 are connected in series with a power supply; the anchor rod 1 also includes: a suction pipe 103, a suction pipe 103 is fixedly installed on the grouting anchor rod 101; the suction pipe 103 is externally connected to a suction pump; the suction pipe 103 is connected to the suction chamber 101 1; The closed connector 2 includes: a closed tube 201 and a closed flange 202, the closed tube 201 is fixedly sleeved on the grouting anchor rod 101; the outer side of the bottom of the closed tube 201 is a slope structure; the closed flange 202 is fixedly installed on the closed tube 201, and a circle of through holes is provided on the outer side of the closed flange 202; the circle of through holes on the closed flange 202 is used to insert bolts to be installed on the ground. The use of the closed connector 2 can improve the anti-leakage effect of the grouting anchor rod 101 during grouting, and can improve the sealing. The closed tube 201 can be close to the opening at the ground. The anchor rod 1 can realize rapid grouting and filling work. At the same time, the use of the suction chamber 1011 in combination with the power supply sheet 1013 can facilitate the staff to understand the comprehensiveness of the grouting, and can facilitate work The personnel stop grouting work in time to avoid the grouting amount exceeding the standard. While the weight of the goaf is excessively increased, the excessive grouting pressure can easily push the inner wall of the goaf directly, causing the inner wall of the goaf to collapse. The structure is simple to operate and can quickly provide prompts. At the same time, it can facilitate back suction when excessive grouting seeps close to the inner wall of the goaf, which can improve the flexibility of the actual grouting operation of the structure and avoid the problem that traditional grouting anchor rods can usually only give pressure and are not convenient for knowing the slurry diffusion range. The structure can be used in multiple distributions during actual use. As the grouting proceeds, the through holes for grouting circulation distributed on the grouting anchor rod 101 can grout outward, and the slurry diffuses to the suction cavity 1 on the grouting anchor rod 101 adjacent to the grouting anchor rod 101 being grouting. 011 outside, slurry gradually accumulates in the adjacent grouting holes, and the slurry liquid level in the suction chamber 1011 gradually rises. When the slurry rises and flows through the suction hole 1012, because the water content in the slurry is large, the two conducting pieces 1013 can be energized and conducted. At this time, the indicator light 102 can light up to remind the staff that the slurry distribution continuity meets the standard and the grouting can be stopped to ensure that the slurry can be continuously combined after grouting each grouting anchor rod 101 to ensure the reinforcement effect. At the same time, it also avoids continuing to grout at this time, causing the slurry to further pressurize downward and exceed the weight standard. It should be noted that the resistivity of the muddy water in the slurry is 15-20Ω·cm, which can achieve conductivity, and the power supply voltage meets the working conditions of the indicator light 102;At the same time, during grouting, the slurry that leaks downward under the action of gravity from the upper layer continues to gather downward. If the two energized plates 1013 are at the bottom of the grouting hole at this time, the staff can start the suction pump connected to the suction pipe 103. At this time, the suction chamber 1011 can actively suck back some of the leaked slurry, allowing grouting to be performed again from top to bottom to reduce the problem of uneven density caused by downward leakage. At the same time, the back-suction method can avoid excessive slurry consumption and increase the burden on the goaf. The sucked-back slurry can be collected and reused.

[0039] The drilling auxiliary component 3 includes: a drilling head 301 and a power connection plate 302. The drilling head 301 is threadedly connected to the grouting anchor rod 101. The end of the drilling head 301 has an inclined surface structure. The drilling head 301 is provided with a spiral blade. The inner side of the drilling head 301 is fixedly mounted with a power connection plate 302, and the inner side of the power connection plate 302 has an inclined surface structure. The drilling head 301 and the power connection plate 302 are made of titanium metal. The end of the grouting anchor rod 101 is provided with a thread for docking the drilling head 301. Before drilling, the drilling head 301 is threadedly connected and assembled to the grouting anchor rod 101. The anchor rod detection component 4 includes: Detection ball sleeve 401, adaptation ball head 402, pulling spring piece 403, telescopic shaft 404 and detection magnet 405, the detection ball sleeve 401 is threadedly connected to the drilling head 301; the adaptation ball head 402 is sleeved inside the detection ball sleeve 401; a circle of pulling spring pieces 403 is fixedly installed on the top of the adaptation ball head 402, and the circle of pulling spring pieces 403 are V-shaped spring piece structures; the ends of the circle of pulling spring pieces 403 are respectively fixedly installed on the inner side of the detection ball sleeve 401; the telescopic shaft 404 is slidably inserted on the adaptation ball head 402, and the end of the telescopic shaft 404 is fixedly installed with a detection magnet 405. The outer side of the detection magnet 405 is provided with a conductive coating; a tension spring is sleeved on the telescopic shaft 404, and the tension spring on the telescopic shaft 404 is connected between the adapter ball head 402 and the detection magnet 405; the drilling rig clutch 5 includes: a fixed cylinder 501, a connecting column 502, an electromagnet 503, a positioning plug 504 and an outward-expanding spring piece 505, the fixed cylinder 501 is threadedly connected to the grouting anchor rod 101; a connecting column 502 is slidably inserted on the fixed cylinder 501; the connecting column 502 is used to connect the drilling rig; an electromagnet 503 is fixedly installed inside the connecting column 502; the connecting column 502 is used to connect the drilling rig; the connecting column 502 is used to connect the drilling rig; the connecting column 503 is fixedly installed inside the connecting column 502; the connecting column 503 ... fixedly installed inside the connecting column 501; the connecting column 503 is fixedly installed inside the connecting column 502; the connecting column 503 is fixedly installed inside the connecting column 501; the connecting column 503 is fixedly installed inside the connecting column 501; the connecting column 503 is fixedly installed inside the connecting column 501; the connecting column 503 is fixedly installed inside the connecting column 501; the connecting column 503 is fixedly installed inside the connecting column 501; the connecting column A circle of positioning blocks 504 is slidably plugged into the connecting column 502, and a circle of positioning blocks 504 are respectively plugged into the inner side of the fixed cylinder 501; the electromagnet 503 is used to magnetically attract the positioning blocks 504; an outward-expanding spring piece 505 is fixedly installed on the inner side of each circle of positioning blocks 504, and the ends of each circle of outward-expanding spring pieces 505 are respectively attached to the outer side of the electromagnet 503; the electromagnet 503 is connected in series with the conductive coating on the outer side of the detection magnet 405 and the power supply 302 through wires; the grouting anchor rod 101 and the drilling head 301 are provided with a wire installation groove for routing wires;The grouting anchor rod 101 and the drilling head 301 are provided with installation grooves for routing. The anchor rod detection part 4 can be used to detect the safety during the grouting exploration process, so as to avoid the drilling auxiliary part 3 continuing to drill downward after approaching the anchor rod originally reinforced in the goaf during the grouting exploration process, causing damage to the reinforced anchor rod in the goaf and aggravating the safety hazard. It ensures that this structure only targets the soil in the goaf during the exploration process, which can be more suitable for the construction of ground roads or road subgrades above culverts built above underground goaf roads. Such goafs usually have an anchor rod system on the inner wall for upper reinforcement, and the surface soil needs to be further reinforced when grouting reinforcement is performed above the goaf. This structure can ensure the safety of grouting reinforcement and reduce the risk of anchor rod damage. At the same time, this structure can cooperate with the drilling rig clutch part 5 to control the disconnection of the drilling rig power in time, and can control the stop of exploration in time to avoid further increase of damage. The structure is more reasonable and can improve This improves safety and also serves to alert workers to the need to shut down the machine. Because the anchor rod is made of ferrous metal, the anchor rod will attract the detection magnet 405. Once attracted by the anchor rod, the detection magnet 405 moves, causing the outer coating to contact the contact plate 302. The electromagnet 503 then electromagnetically attracts the positioning plug 504, causing it to retract inward and no longer be inserted into the fixed barrel 501 for positioning. At this point, the drilling rig's power cannot be properly rotated and transmitted, and the connecting column 502 inside the fixed barrel 501 is in an idling and sliding state, allowing workers to quickly shut down the machine.

[0040] Example 2, on the basis of Example 1, the slurry fixed point part 6 includes: a grouting regulating pipe 601 and a material pump connector 602, the grouting regulating pipe 601 is slidably inserted into the grouting anchor 101; the tail of the grouting regulating pipe 601 is fixedly installed with a material pump connector 602; the material pump connector 602 is used to threadably connect the slurry outlet pipe joint of the grouting pump; the slurry fixed point part 6 also includes: a slurry outlet groove 6011 and a retaining ring 603, the outer side of the front end of the grouting regulating pipe 601 is provided with a circle of slurry outlet groove 6011; the front end of the grouting regulating pipe 601 is fixedly installed with two retaining rings 603, and the two retaining rings 603 are respectively It is located on both sides of a circle of slurry outlet grooves 6011; the retaining ring 603 is sleeved on the inside of the grouting anchor rod 101, and the use of the slurry fixed point part 6 can facilitate the staff to flexibly adjust the grouting position, and can be adjusted in real time according to the situation. At the same time, the slurry outlet grooves 6011 are used to locally grout the grouting anchor rod 101, which can have better penetration pressure and promote slurry penetration. The structure is simple to operate and can be quickly operated by hand. When manual grouting is required, the fixed cylinder 501 can be directly rotated and disassembled, and the grouting adjustment tube 601 can be manually held to adjust the height of the slurry outlet groove 601 to control the grouting position.

[0041] A method for pre-reinforcement of highway in mined-out sections:

[0042] 1) Multiple grouting anchor rods 101 are inserted into the ground, and the height of the grouting channel 601 is adjusted by manually holding the grouting adjustment pipe 601 to control the grouting position;

[0043] 2) When the slurry leaks to the outside of the suction chamber 1011 on the grouting anchor 101 adjacent to the grouting anchor 101 being grouted, the slurry liquid level in the suction chamber 1011 gradually rises. When the slurry liquid surface contacts the two conducting plates 1013, the moisture in the slurry conducts the circuit, and the indicator light 102 lights up to indicate the slurry diffusion range.

[0044] The working principle of this embodiment is as follows: First, connect the connecting column 502 to the drilling rig, control the grouting anchor rod 101 to move downward to cooperate with the drilling head 301, drill into the ground, and control the drilling head 301 to advance and rotate the drilling rig. When the detection magnet 405 is not magnetically attracted, the pulling spring piece 403 can keep the adapter ball head 402 centered to avoid interference with the test. Once the drilling head 301 directly squeezes or the side of the drilling head 301 is pressed against the anchor rod, as long as the distance is too close, because the anchor rod is iron metal, the anchor rod will attract the detection magnet 405. After the detection magnet 405 is attracted by the anchor rod, If the detection magnet 405 is facing the anchor rod, the detection magnet 405 will move to the side of the anchor rod, driving the telescopic shaft 404 to lengthen the tension spring sleeved on the outside of the telescopic shaft 404. If the side of the drilling head 301 is against the anchor rod, the detection magnet 405 can swing to one side, and the adapting ball head 402 can be rotated for multi-directional adaptation. At this time, the outer coating of the detection magnet 405 will be attached to the contact piece 302, and the electromagnet 503 can electromagnetically absorb a circle of the positioning plug 504, driving the positioning plug 504 to retract, and no longer plugged into the inner side of the fixed tube 501 for positioning. At this time, the drilling rig The power cannot be normally rotated and transmitted, and the connecting column 502 inside the fixed cylinder 501 is in the effect of idling sliding. The staff can quickly operate the shutdown. According to the filling area, multiple drilling heads 301 can be inserted into the ground respectively, and then the fixed cylinder 501 can be rotated and unscrewed. The material pump connector 602 is threadedly connected to the grouting pipe joint of the grouting pump. The grouting regulating pipe 601 is manually held to adjust the height of the grouting groove 6011 to control the grouting position. After the grouting is completed, the grouting anchor rod 101 is directly left in the ground to assist in reinforcement. As the grouting proceeds, the grouting anchor rod 1 The through holes for grouting circulation distributed on 01 can grout outward. When the slurry diffuses to the outside of the suction cavity 1011 on the grouting anchor rod 101 adjacent to the grouting anchor rod 101 being grouted, the slurry gradually accumulates in the adjacent grouting holes, and the slurry liquid level in the suction cavity 1011 gradually rises. When the slurry rises and flows through the suction hole 1012, the two power-on pieces 1013 can be energized and conducted because of the large water content in the slurry. At this time, the indicator light 102 can light up to remind the staff that the slurry distribution continuity has reached the standard and the grouting can be stopped.

[0045] During grouting, the slurry that leaks downward under the action of gravity from the upper layer continues to gather downward. The staff can start the suction pump connected to the suction pipe 103. At this time, the suction chamber 1011 can actively suck back part of the leaked slurry, and then grouting can be performed again from top to bottom to promote the filling effect of the upper slurry, so as to reduce the problem of uneven density caused by downward leakage.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pre-reinforcement device for a goaf section highway, comprising an anchor member (1), on which a closed connector (2) is fixedly mounted, characterized in that: The anchor rod (1) is used to be buried in the soil above the goaf section to reinforce the soil above the goaf section; a drilling auxiliary component (3) is installed on the anchor rod (1); A retained anchor rod detection component (4) is installed inside the drilling auxiliary component (3); the anchor rod detection component (4) is used to detect anchor rods inside the goaf section; A drilling rig clutch (5) is installed on the anchor rod (1); the drilling rig clutch (5) is used to control the feeding stop; a slurry fixed point part (6) is inserted into the anchor rod (1); the slurry fixed point part (6) is used to position the slurry supply; The anchor rod (1) comprises: a grouting anchor rod (101), an indicator light (102) fixedly mounted on the grouting anchor rod (101); a through hole for grouting circulation is provided on the grouting anchor rod (101); the grouting anchor rod (101) is used to be inserted into the soil above the goaf section; The anchor rod (1) further comprises: a suction cavity (1011); the bottom of the grouting anchor rod (101) is provided with a suction cavity (1011); and the grouting anchor rod (101) is provided with a circle of through holes located outside the suction cavity (1011); the suction cavity (1011) is used to suck back slurry; a suction hole (1012) is provided on the pipe wall of the grouting anchor rod (101); two power supply plates (1013) are fixedly installed inside the suction hole (1012), and a space is provided between the two power supply plates (1013); the two power supply plates (1013) and the indicator light (102) are connected in series to a power supply; The drilling auxiliary component (3) comprises: a drilling head (301), the drilling head (301) being mounted on a grouting anchor rod (101); the end of the drilling head (301) being a bevel structure; a spiral blade being provided on the drilling head (301); a power connection plate (302) being fixedly mounted on the inner side of the drilling head (301), and the inner side of the power connection plate (302) being a bevel structure; the drilling head (301) and the power connection plate (302) being made of titanium metal; The anchor rod detection component (4) comprises: a detection ball sleeve (401), the detection ball sleeve (401) is threadedly connected to the drilling head (301); an adapter ball head (402) is sleeved inside the detection ball sleeve (401); a circle of pulling springs (403) is fixedly installed on the top of the adapter ball head (402), and the circle of pulling springs (403) are respectively V-shaped spring structures; the ends of the circle of pulling springs (403) are respectively fixedly installed on the inner side of the detection ball sleeve (401); a telescopic shaft (404) is slidably inserted on the adapter ball head (402), and a detection magnet (405) is fixedly installed on the end of the telescopic shaft (404), and a conductive coating is provided on the outer side of the detection magnet (405); a tension spring is sleeved on the telescopic shaft (404), and the tension spring on the telescopic shaft (404) is connected between the adapter ball head (402) and the detection magnet (405).

2. The advance pre-reinforcement device for a goaf section highway according to claim 1, characterized in that: The anchor rod (1) further comprises: a suction pipe (103); the suction pipe (103) is fixedly mounted on the grouting anchor rod (101); the suction pipe (103) is externally connected to a suction pump; and the suction pipe (103) is in communication with a suction chamber (1011).

3. The advance pre-reinforcement device for a mined-out section highway according to claim 1, characterized in that: The closed connector (2) comprises: a closed tube (201), the closed tube (201) being fixedly sleeved on the grouting anchor rod (101); the outer side of the bottom of the closed tube (201) being an inclined surface structure; a closed flange (202) being fixedly mounted on the closed tube (201), and a circle of through holes being provided on the outer side of the closed flange (202); and bolts being inserted into the circle of through holes on the closed flange (202) for mounting on the ground.

4. The advance pre-reinforcement device for a mined-out section of a highway according to claim 1, characterized in that: The drilling rig clutch (5) comprises: a fixed cylinder (501), the fixed cylinder (501) being threadedly connected to the grouting anchor rod (101); a connecting column (502) being slidably plugged into the fixed cylinder (501); the connecting column (502) being used to connect to the drilling rig; an electromagnet (503) being fixedly installed inside the connecting column (502); a circle of positioning plugs (504) being slidably plugged into the connecting column (502), and the circle of positioning plugs (504) are respectively plugged into the inner side of the fixed cylinder (501); the electromagnet (503) is used to magnetically attract the positioning plug (504); a circle of the positioning plug (504) is respectively fixedly installed with an outward-expanding spring piece (505) on the inner side, and the end of a circle of the outward-expanding spring piece (505) is respectively attached to the outer side of the electromagnet (503); the electromagnet (503) is respectively connected to the conductive coating on the outer side of the detection magnet (405) and the power supply (302) in series through a wire.

5. The advance pre-reinforcement device for a mined-out section highway according to claim 1, characterized in that: The slurry fixed point component (6) comprises: a grouting regulating pipe (601), the grouting regulating pipe (601) being slidably inserted into the interior of the grouting anchor rod (101); a material pump connector (602) being fixedly mounted at the tail end of the grouting regulating pipe (601); the material pump connector (602) being used for threaded connection to a slurry outlet pipe joint of a grouting pump.

6. The advance pre-reinforcement device for a mined-out section of a highway according to claim 5, characterized in that: The slurry fixed point member (6) further comprises: a slurry outlet groove (6011), wherein a circle of the slurry outlet groove (6011) is provided on the outer side of the front end of the grouting regulating pipe (601); two retaining rings (603) are fixedly mounted on the front end of the grouting regulating pipe (601), and the two retaining rings (603) are respectively located on both sides of the circle of the slurry outlet groove (6011); and the retaining rings (603) are sleeved inside the grouting anchor rod (101).

7. A method for pre-reinforcement of a goaf section highway, using the pre-reinforcement device for a goaf section highway according to claim 6, characterized in that: The steps include: 1) Multiple grouting anchor rods (101) are inserted into the ground respectively, and the height of the grouting channel (6011) is adjusted by manually holding the grouting adjustment pipe (601) to control the grouting position; 2) When the slurry leaks to the outside of the suction chamber (1011) on the grouting anchor rod (101) adjacent to the grouting anchor rod (101) being grouted, the slurry liquid level in the suction chamber (1011) gradually rises. When the slurry liquid surface contacts the two conducting plates (1013), the moisture in the slurry conducts the circuit, and the indicator light (102) lights up to indicate the slurry diffusion range.

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