Advanced pre-reinforcing device and method for goaf section road

Abstract

The invention discloses an advanced pre-reinforcement device and method for a goaf section road, and relates to the technical field of grouting reinforcement. Comprising an anchor rod piece, a closed connecting piece is fixedly installed on the anchor rod piece, and the anchor rod piece is used for being buried in soil above a goaf section to reinforce the soil above the goaf section; a drilling auxiliary part is mounted on the anchor rod part; an indwelling anchor rod detection piece is mounted in the drilling auxiliary piece; the anchor rod detection piece is used for detecting an anchor rod close to the interior of a goaf section; a suction cavity is matched with an electrifying sheet, so that a worker can conveniently know the grouting comprehensiveness, and it is ensured that slurry can be continuously integrated after grouting of each grouting anchor rod; the problems that according to an existing goaf section road advanced pre-reinforcing device, it is not convenient for workers to know the grouting casting diffusion position, and the risk that anchor rods on the inner side of a goaf are extruded and collided exists are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of grouting reinforcement, and specifically relates to an advanced pre-reinforcement device and method for a highway in a goaf area. Background Art

[0002] In actual highway construction work, in order to ensure the anti-subsidence of the highway after construction, it is usually necessary to carry out grouting reinforcement work on the roadbed in the goaf area. The grouting anchor rod is a common reinforcement tool. By injecting cement slurry into the ground gap, it is filled and reinforced to improve the stability of subsequent road surface construction. The current grouting anchor rod is not convenient for workers to know the position where the grout flows and spreads, and it is not convenient for workers to judge the comprehensiveness of grouting. Usually, it relies on manual experience to judge the grouting volume. At the same time, the upper slurry is easy to leak downward, and it is not convenient to suck back the leaked slurry from the lower layer to supplement the upper layer filling. Directly overfilling the slurry will cause the weight of the goaf to be too large, further affecting safety. When carrying out grouting reinforcement and probing downward, there is a risk of squeezing and colliding with the inner anchor rod of the goaf. It is not convenient for automatic monitoring and protection, because in goaf areas such as artificial culverts, anchor rods are also drilled into the inner wall of the goaf for reinforcement and protection. When the grouting drilling depth is relatively large, directly colliding and squeezing the anchor rods on the inner wall of the goaf will directly affect the stability of the goaf, and further affect the quality of the roadbed construction.

[0003] Therefore, we propose an advanced pre-reinforcement device and method for a highway in a goaf area. Summary of the Invention

[0004] The purpose of the present invention is to provide an advanced pre-reinforcement device and method for a highway in a goaf area, so as to solve the problems in the above background art that the current advanced pre-reinforcement device for a highway in a goaf area is not convenient for workers to know the position where the grout flows and spreads, and there is a risk of squeezing and colliding with the inner anchor rod of the goaf.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An advanced pre-reinforcement device for a highway in a goaf area, including an anchor rod member, a closed connecting member is fixedly installed on the anchor rod member, and the anchor rod member is used for being buried into the soil above the goaf area to reinforce the soil above the goaf area; a drilling assisting member is installed on the anchor rod member; A retaining anchor detecting member is installed inside the drilling assisting member; the anchor detecting member is used for detecting the anchor rod close to the inside of the goaf area; A drill clutch member is installed on the anchor rod member; the drill clutch member is used for controlling the stop of the feed; a slurry fixed-point member is inserted into the anchor rod member; the slurry fixed-point member is used for positioning and supplying the slurry; The anchor rod member includes: a grouting anchor rod, an indicator light is fixedly installed on the grouting anchor rod; a through hole for grout flow is provided on the grouting anchor rod; the grouting anchor rod is used for being inserted into the soil above the goaf area.

[0006] Preferably, the anchor rod member further includes: a suction cavity, a suction cavity is formed at the bottom of the grouting anchor rod, and a circle of through holes is provided on the grouting anchor rod outside the suction cavity; the suction cavity is used for sucking back the slurry; a suction hole is formed on the pipe wall of the grouting anchor rod; two energized pieces are fixedly installed inside the suction hole, and there is a gap between the two energized pieces; the two energized pieces and the indicator light are connected in series to the power supply.

[0007] Preferably, the anchor rod member further includes: a suction pipe, a suction pipe is fixedly installed on the grouting anchor rod; the suction pipe is externally connected to a suction pump; the suction pipe communicates with the suction cavity.

[0008] Preferably, the closing connector includes: a closing cylinder, the closing cylinder is fixedly sleeved on the grouting anchor rod; the outer side of the bottom of the closing cylinder is a bevel structure; a closing flange is fixedly installed on the closing cylinder, and a circle of through holes is provided on the outer side of the closing flange; a bolt is inserted into the circle of through holes on the closing flange for installation on the ground.

[0009] Preferably, the drilling assistance member includes: a drilling head, the drilling head is installed on the grouting anchor rod; the end of the drilling head is a bevel structure; a spiral blade is provided on the drilling head; a power connection piece is fixedly installed inside the drilling head, and the inner side of the power connection piece is a bevel structure; the drilling head and the power connection piece are made of titanium metal.

[0010] Preferably, the anchor rod detection member includes: a detection ball sleeve, the detection ball sleeve is threadedly connected to the drilling head; an adapter ball head is sleeved inside the detection ball sleeve; a circle of pulling elastic pieces is fixedly installed at the top of the adapter ball head, and the circle of pulling elastic pieces are respectively V-shaped elastic piece structures; the end parts of the circle of pulling elastic pieces are respectively fixedly installed on the inner side of the detection ball sleeve; a telescopic shaft is slidably inserted into the adapter ball head, and a detection magnet is fixedly installed at 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.

[0011] Preferably, the drilling machine clutch member includes: a fixed cylinder, the fixed cylinder is threadedly connected to the grouting anchor rod; a connecting column is slidably inserted into the fixed cylinder; the connecting column is used to connect the drilling machine; an electromagnet is fixedly installed inside the connecting column; a circle of positioning blocks is slidably inserted into the connecting column, and the circle of positioning blocks are respectively inserted into the inner side of the fixed cylinder; the electromagnet is used to magnetically attract the positioning blocks; a circle of outward expanding elastic pieces are fixedly installed on the inner side of the circle of positioning blocks, and the end parts of the circle of outward expanding elastic pieces are respectively attached to the outside of the electromagnet.

[0012] Preferably, the slurry fixed-point member includes: a grouting adjusting pipe, the grouting adjusting pipe is slidably inserted into the grouting anchor rod; a material pump connection head is fixedly installed at the tail of the grouting adjusting pipe; the material pump connection head is used for threadedly connecting the slurry outlet pipe joint of the grouting pump.

[0013] Preferably, the slurry positioning member further includes: a slurry outlet through groove, which is provided with a circular slurry outlet through groove on the outer side of the front end of the grouting adjustment pipe; two retaining rings are fixedly installed at the front end of the grouting adjustment pipe, and the two retaining rings are respectively located on both sides of the circular slurry outlet through groove; the retaining rings are sleeved inside the grouting anchor rod.

[0014] A method for advanced pre - reinforcement of a highway in a goaf area, the steps of which include: 1). Insert multiple grouting anchor rods into the ground respectively, manually hold the grouting adjustment pipe to lift and lower to adjust the height of the slurry outlet through groove, and control the grouting position; 2). When the slurry leaks to the outside of the suction cavity of the grouting anchor rod adjacent to the grouting anchor rod being grouted, the slurry level in the suction cavity gradually rises. When the slurry surface contacts the two energized pieces, the moisture in the slurry conducts the circuit, and the indicator light lights up to prompt the diffusion range of the slurry.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The present invention uses a suction cavity in cooperation with energized pieces, which can facilitate the staff to understand the comprehensiveness of grouting, ensure that the slurry can be continuously integrated after grouting each grouting anchor rod, guarantee the reinforcement effect, facilitate the staff to stop the grouting work in time, avoid excessive grouting volume, facilitate the back - suction work when the grouting infiltrates downward too much and approaches the inner wall of the goaf, can improve the flexibility of actual grouting operation, avoid the problem that traditional grouting anchor rods usually can only apply pressure and it is not easy to know the slurry diffusion range, can realize the active back - suction of part of the oozing slurry, can subsequently grout downward 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 use of slurry, increase the burden on the goaf, and the back - suctioned slurry can be collected and reused.

[0016] The use of the anchor rod detection member can be used to detect the safety during the down - hole exploration of grouting. Avoid during the down - hole exploration of grouting, after the drilling auxiliary member approaches the originally reinforced anchor rod in the goaf and still continues to drill downward, which may damage the reinforced anchor rod in the goaf and exacerbate the safety hazard. Ensure that this structure only targets the goaf soil during the down - hole exploration, and it is more suitable for roadbed construction of ground roads or culverts above underground goaf roads. Cooperating with the drill clutch member can timely control and disconnect the power of the drill, and can timely control to stop the down - hole exploration to avoid further increase of damage.

[0017] The use of the slurry positioning member can facilitate the staff to flexibly adjust the grouting position, which can be adjusted in real time according to the situation, and at the same time, use the slurry outlet through groove to grout locally for the grouting anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an advanced pre - reinforcement device for a highway in a goaf area of the present invention; Figure 2 Internal structure sectional view of a goaf section highway advanced pre - reinforcement device of the present invention; Figure 3 Schematic structural view of the closed connecting piece of the present invention; Figure 4 Schematic structural view of the anchor rod piece of the present invention; Figure 5 For the present invention Figure 3 Enlarged view of the structure of area B in Figure 6 For the present invention Figure 2 Enlarged view of the structure of area C in Figure 7 For the present invention Figure 3 Enlarged view of the structure of area E in Figure 8 Schematic structural view of the drill clutch part of the present invention; Figure 9 For the present invention Figure 3 Enlarged view of the structure of area G in Figure 10 Schematic structural view of the slurry fixed - point part of the present invention.

[0019] In the figure: 1. Anchor rod piece; 101. Grouting anchor rod; 102. Indicator light; 1011. Suction cavity; 1012. Suction hole; 1013. Energized piece; 103. Suction pipe; 2. Closed connecting piece; 201. Closed cylinder; 202. Closed flange; 3. Drilling auxiliary piece; 301. Drilling head; 302. Power - connecting piece; 4. Anchor rod detection piece; 401. Detection ball sleeve; 402. Adapted ball head; 403. Tensile elastic piece; 404. Telescopic shaft; 405. Detection magnet; 5. Drill clutch part; 501. Fixed cylinder; 502. Connecting column; 503. Electromagnet; 504. Positioning plug; 505. Outer - expanding elastic piece; 6. Slurry fixed - point part; 601. Grouting adjustment pipe; 6011. Slurry outlet groove; 602. Material pump connection head; 603. Retaining ring. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1 to 10 Shown as follows: The present invention provides a technical solution: an advanced pre-reinforcement device for a highway in a goaf area, including an anchor rod member 1, on which a closed connecting member 2 is fixedly installed. The anchor rod member 1 is used to be buried in the soil above the goaf area to reinforce the soil above the goaf area; a drilling assistance member 3 is installed on the anchor rod member 1; a retained anchor detection member 4 is installed inside the drilling assistance member 3; the anchor rod detection member 4 is used to detect the anchor rods close to the inside of the goaf area; a drill clutch member 5 is installed on the anchor rod member 1; the drill 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 and supply slurry; the anchor rod member 1 includes: a grouting anchor rod 101 and an indicator light 102, and the indicator light 102 is fixedly installed on the grouting anchor rod 101; 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 area.

[0022] Among them, the anchor rod member 1 further includes: a suction cavity 1011, a suction hole 1012, and an energized sheet 1013. A suction cavity 1011 is provided at the bottom of the grouting anchor rod 101, and a circle of through holes is provided on the grouting anchor rod 101 outside the suction cavity 1011; the suction cavity 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 energized sheets 1013 are fixedly installed inside the suction hole 1012, and there is a gap between the two energized sheets 1013; the two energized sheets 1013 and the indicator light 102 are connected in series to the power supply; the anchor rod member 1 further includes: a suction pipe 103, and the 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 communicates with the suction cavity 1011; the sealing connector 2 includes: a sealing cylinder 201 and a sealing flange 202, and the sealing cylinder 201 is fixedly sleeved on the grouting anchor rod 101; the outer bottom of the sealing cylinder 201 is a slope structure; a sealing flange 202 is fixedly installed on the sealing cylinder 201, and a circle of through holes is provided on the outside of the sealing flange 202; a bolt is inserted into the circle of through holes on the sealing flange 202 for installation on the ground. The use of the sealing connector 2 can improve the anti-leakage effect during the grouting of the grouting anchor rod 101 and can improve the sealing performance. The sealing cylinder 201 can closely adhere to the ground opening. The use of the anchor rod member 1 can achieve rapid grouting filling work. At the same time, by using the suction cavity 1011 in cooperation with the energized sheet 1013, it is convenient for the staff to understand the comprehensiveness of grouting, and it is convenient for the staff to stop the grouting work in time to avoid excessive grouting volume, which will cause excessive increase in the weight of the goaf. At the same time, excessive grouting pressure is also likely to directly push against the inner wall of the goaf, causing the inner wall of the goaf to collapse. The operation of this structure is simple, and it can give a prompt quickly. At the same time, it is convenient to perform a suction work when the grouting leaks excessively and approaches the inner wall of the goaf, which can improve the flexibility of the actual grouting operation of this structure and avoid the problem that traditional grouting anchor rods can only apply pressure and it is not convenient to know the diffusion range of the slurry. When this structure is actually used, multiple can be distributed for use. As the grouting progresses, the through holes for grouting circulation distributed on the grouting anchor rod 101 can grout and circulate outward. When the slurry diffuses to the outside of the suction cavity 1011 of 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 level in the suction cavity 1011 gradually rises. When the slurry rises and flows through the suction hole 1012, because the water content in the slurry is relatively large, the two energized sheets 1013 can be electrically conducted, and at this time the indicator light 102 can light up to give a prompt. The indicator light 102 prompts the staff that the continuity of the slurry distribution meets the standard, and the grouting can be stopped to ensure that the slurry can be continuously combined after each grouting anchor rod 101 is grouted, ensuring the reinforcement effect. At the same time, it also avoids continuous grouting at this time, causing the slurry to further exert pressure downward and the weight to exceed the standard. It should be noted that the mud resistivity in the slurry is 15 - 20 Ω·cm, which can achieve electrical conduction, and the power supply voltage meets the working requirements of the indicator light 102;Meanwhile, during grouting, the slurry that leaks downward under the action of gravity in the upper layer continuously gathers downward. If the positions of the two energized sheets 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 cavity 1011 can actively suck back a part of the oozing slurry, and then grout from top to bottom again to reduce the problem of uneven density caused by downward leakage. At the same time, the suction-back method can avoid excessive consumption of slurry and increase the burden on the goaf. The suctioned-back slurry can be collected and reused.;

[0023] Among them, the drilling auxiliary part 3 includes: a drilling head 301 and a power connection piece 302. The drilling head 301 is threadedly connected to the grouting anchor rod 101; the end of the drilling head 301 is a bevel structure; the drilling head 301 is provided with spiral blades; the power connection piece 302 is fixedly installed inside the drilling head 301, and the inner side of the power connection piece 302 is a bevel structure; the drilling head 301 and the power connection piece 302 are made of titanium metal; at the end of the grouting anchor rod 101, there is a thread for connecting the drilling head 301, and before drilling, the drilling head 301 is threadedly connected and assembled on the grouting anchor rod 101; the anchor rod detection part 4 includes: a detection ball sleeve 401, a matching ball head 402, a pulling elastic piece 403, a telescopic shaft 404 and a detection magnet 405. The detection ball sleeve 401 is threadedly connected to the drilling head 301; the matching ball head 402 is sleeved inside the detection ball sleeve 401; at the top of the matching ball head 402, a circle of pulling elastic pieces 403 is fixedly installed, and each of the circle of pulling elastic pieces 403 is a V-shaped elastic piece structure; the ends of the circle of pulling elastic 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 matching ball head 402, and the detection magnet 405 is fixedly installed at 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 matching ball head 402 and the detection magnet 405; the drill clutch part 5 includes: a fixed cylinder 501, a connecting column 502, an electromagnet 503, a positioning plug 504 and an outward expanding elastic piece 505. The fixed cylinder 501 is threadedly connected to the grouting anchor rod 101; the connecting column 502 is slidably inserted on the fixed cylinder 501; the connecting column 502 is used to connect the drill; the electromagnet 503 is fixedly installed inside the connecting column 502; a circle of positioning plugs 504 is slidably inserted on the connecting column 502, and each of the circle of positioning plugs 504 is inserted inside the fixed cylinder 501; the electromagnet 503 is used to magnetically attract the positioning plug 504; the inner sides of the circle of positioning plugs 504 are respectively fixedly installed with outward expanding elastic pieces 505, and the ends of the circle of outward expanding elastic pieces 505 are respectively attached to the outer side of the electromagnet 503; the electromagnet 503 is connected in series with the power supply through a wire with the conductive coating on the outer side of the detection magnet 405 and the power connection piece 302; on the grouting anchor rod 101 and the drilling head 301, there are wire installation grooves for routing wires;The grouting bolt 101 and the drilling head 301 are provided with installation grooves for wire routing. The bolt detection member 4 can be used to detect the safety during the process of grouting and probing downward. This can prevent the drilling auxiliary member 3 from continuously drilling downward after approaching the originally reinforced bolts in the goaf during the process of grouting and probing downward, which may damage the reinforced bolts in the goaf and exacerbate the potential safety hazards. This ensures that the present structure only targets the goaf soil during the downward probing process, and is more suitable for, for example, the construction of ground roads or roadbeds above culverts built above underground mined-out roads. Such goafs usually have bolt systems installed on their inner walls for upper reinforcement. When performing grouting reinforcement above the goaf, it is also necessary to further reinforce the surface soil. The present structure can ensure the safety of grouting reinforcement, reduce the potential hazard of bolt damage. At the same time, the present structure cooperates with the drill clutch member 5 to timely control the disconnection of the drill power, and can timely control the stop of the downward probing to avoid further increase in damage. The structure is more reasonable, can improve safety, and is also used to prompt the staff to need to stop the machine. Because the bolt is made of iron metal, at this time the bolt will attract the detection magnet 405. After the detection magnet 405 is attracted by the bolt, the detection magnet 405 moves, and the outer coating fits the power connection piece 302, and the electromagnet 503 can be electrified to attract the positioning block 504 in a circle, driving the positioning block 504 to retract and no longer being inserted inside the fixed cylinder 501 for positioning. At this time, the drill power cannot be normally rotated and transmitted, and the connecting column 502 inside the fixed cylinder 501 is in an idling and sliding state, and the staff can quickly operate to stop the machine.;

[0024] Embodiment 2, on the basis of Embodiment 1, the slurry fixed-point member 6 includes: a grouting adjustment pipe 601 and a slurry pump connection head 602. The grouting adjustment pipe 601 is slidably inserted inside the grouting bolt 101; a slurry pump connection head 602 is fixedly installed at the tail of the grouting adjustment pipe 601; the slurry pump connection head 602 is used for threaded connection with the slurry outlet pipe joint of the slurry pump; the slurry fixed-point member 6 further includes: a slurry outlet through groove 6011 and a retaining ring 603. A circle of slurry outlet through grooves 6011 is opened on the outer side of the front end of the grouting adjustment pipe 601; two retaining rings 603 are fixedly installed at the front end of the grouting adjustment pipe 601, and the two retaining rings 603 are respectively located on both sides of a circle of slurry outlet through grooves 6011; the retaining ring 603 is sleeved inside the grouting bolt 101. Using the slurry fixed-point member 6 can facilitate the staff to flexibly adjust the grouting position, which can be adjusted in real time according to the situation. At the same time, the slurry outlet through groove 6011 is used for local grouting of the grouting bolt 101, which can have better penetration pressure to promote the penetration of the slurry. The structure is simple to operate and can be quickly operated manually by hand. When manual grouting is required, the fixed cylinder 501 can be directly rotated and disassembled, and the staff can hold the grouting adjustment pipe 601 by hand to lift and adjust the height of the slurry outlet through groove 6011 to control the grouting position.

[0025] A method for advanced pre-reinforcement of a mined-out section highway: 1), Insert multiple grouting bolts 101 into the ground respectively. Manually hold the grouting adjustment pipe 601 and lift or lower it to adjust the height of the slurry outlet groove 6011 to control the grouting position; 2), When the slurry leaks to the outside of the suction cavity 1011 on the grouting bolt 101 adjacent to the grouting bolt 101 being grouted, the slurry level in the suction cavity 1011 gradually rises. When the slurry surface contacts the two energized pieces 1013, the moisture in the slurry conducts the circuit, and the indicator light 102 lights up to indicate the slurry diffusion range.

[0026] The working principle of this embodiment: First, connect the connecting column 502 to the drill rig, control the grouting bolt 101 to move down to cooperate with the drilling head 301, and drill into the ground. When the drill rig controls the drilling head 301 to advance and rotate for drilling, when the detection magnet 405 is not magnetically attracted, the pulling elastic piece 403 can keep the matching ball head 402 centered to avoid interfering with the test. Once the drilling head 301 directly squeezes or the side of the drilling head 301 abuts against the bolt, as long as the distance is too close, because the bolt is made of iron metal, at this time the bolt will attract the detection magnet 405. After the detection magnet 405 is attracted by the bolt, if the detection magnet 405 is directly facing the bolt, the detection magnet 405 will move towards the bolt side, driving the telescopic shaft 404 to stretch the spring sleeved outside the telescopic shaft 404. If the side of the drilling head 301 abuts against the bolt, the detection magnet 405 can swing to one side, and the matching ball head 402 can rotate for multi-directional matching. At this time, the coating outside the detection magnet 405 will fit the power-on piece 302, and the electromagnet 503 can be energized to magnetically attract the positioning insert block 504 in a circle, driving the positioning insert block 504 to retract and no longer be inserted inside the fixed cylinder 501 for positioning. At this time, the power of the drill rig cannot be normally rotated and transmitted, and the connecting column 502 inside the fixed cylinder 501 is in an idling and sliding state. The staff can quickly operate to stop the machine. According to the filling area, multiple drilling heads 301 can be inserted into the ground respectively, and then the fixed cylinder 501 is rotated and removed. The material pump connector 602 is threadedly connected to the slurry outlet pipe connector of the grouting pump. Manually hold the grouting adjustment pipe 601 and lift or lower it to adjust the height of the slurry outlet groove 6011 to control the grouting position. After grouting, the grouting bolt 101 is directly left in the ground to assist in reinforcement. As the grouting progresses, the through holes for slurry circulation distributed on the grouting bolt 101 can grout and circulate outward. When the slurry diffuses to the outside of the suction cavity 1011 on the grouting bolt 101 adjacent to the grouting bolt 101 being grouted, the slurry gradually accumulates in the adjacent grouting holes, and the slurry level in the suction cavity 1011 gradually rises. When the slurry rises and flows through the suction hole 1012, because the moisture content in the slurry is relatively large, the two energized pieces 1013 can be energized and conducted. At this time, the indicator light 102 can light up to prompt. The indicator light 102 prompts the staff that the continuity of the slurry distribution meets the standard, and the grouting can be stopped; When grouting, the slurry that leaks downward under the action of gravity in the upper layer continuously gathers downward. The staff can start the suction pump connected to the suction pipe 103. At this time, the suction cavity 1011 can actively suck back some of the leaked slurry, and then grout from top to bottom again to promote the filling effect of the slurry above and reduce the problem of uneven density caused by downward leakage.

[0027] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An advanced pre - reinforcement device for a highway in a goaf section, comprising an anchor rod member (1), and a closed connecting member (2) is fixedly installed on the anchor rod member (1), characterized in that: The anchor rod member (1) is used to be buried in the soil above the goaf area to reinforce the soil above the goaf area; a drilling assistance member (3) is installed on the anchor rod member (1); A retained anchor rod detector (4) is installed inside the drilling assistance member (3); the anchor rod detector (4) is used to detect the anchor rod near the inside of the goaf area; A drill clutch member (5) is installed on the anchor rod member (1); the drill 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 and supply the slurry; The anchor rod member (1) includes: a grouting anchor rod (101), and an indicator light (102) is fixedly installed 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 area; The anchor rod member (1) further includes: a suction cavity (1011), a suction cavity (1011) is opened at the bottom of the grouting anchor rod (101), and a circle of through holes is provided on the grouting anchor rod (101) outside the suction cavity (1011); the suction cavity (1011) is used to suck back the slurry; a suction hole (1012) is opened on the pipe wall of the grouting anchor rod (101); two energized sheets (1013) are fixedly installed inside the suction hole (1012), and there is a gap between the two energized sheets (1013); the two energized sheets (1013) and the indicator light (102) are connected in series to a power source.

2. The advanced pre-reinforcement device for a goaf-section highway according to claim 1, characterized in that: The anchor rod member (1) further 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) communicates with the suction cavity (1011).

3. The advanced pre-reinforcement device for a goaf-section highway according to claim 1, characterized in that: The sealing connection member (2) includes: a sealing cylinder (201), the sealing cylinder (201) is fixedly sleeved on the grouting anchor rod (101); the outer bottom of the sealing cylinder (201) is a bevel structure; a sealing flange (202) is fixedly installed on the sealing cylinder (201), and a circle of through holes is provided on the outside of the sealing flange (202); bolts are inserted into the circle of through holes on the sealing flange (202) for installation on the ground.

4. The advanced pre-reinforcement device for a goaf-section highway according to claim 1, characterized in that: The drilling assistance member (3) includes: a drill head (301), the drill head (301) is installed on the grouting anchor rod (101); the end of the drill head (301) is a bevel structure; a spiral blade is provided on the drill head (301); a connecting electric sheet (302) is fixedly installed inside the drill head (301), and the inner side of the connecting electric sheet (302) is a bevel structure; the drill head (301) and the connecting electric sheet (302) are made of titanium metal.

5. The advanced pre-reinforcement device for a goaf-section highway according to claim 4, wherein: The bolt detection component (4) includes: a detection ball sleeve (401) which 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 elastic pieces (403) is fixedly installed at the top of the adapter ball head (402), and the circle of pulling elastic pieces (403) are respectively in a V-shaped elastic piece structure; the end parts of the circle of pulling elastic pieces (403) are respectively fixedly installed on the inner side of the detection ball sleeve (401); a telescopic shaft (404) is slidably inserted into the adapter ball head (402), and a detection magnet (405) is fixedly installed at the end of the telescopic shaft (404), and a conductive coating is provided on the outside 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).

6. The advanced pre-reinforcement device for a goaf-section highway according to claim 1, characterized in that: The drill clutch component (5) includes: a fixed cylinder (501) which is threadedly connected to the grouting bolt (101); a connecting column (502) is slidably inserted into the fixed cylinder (501); the connecting column (502) is used to connect the drill; an electromagnet (503) is fixedly installed inside the connecting column (502); a circle of positioning blocks (504) is slidably inserted into the connecting column (502), and the circle of positioning blocks (504) are respectively inserted into the inner side of the fixed cylinder (501); the electromagnet (503) is used to magnetically attract the positioning blocks (504); a circle of outward expanding elastic pieces (505) are respectively fixedly installed on the inner sides of the circle of positioning blocks (504), and the end parts of the circle of outward expanding elastic pieces (505) are respectively attached to the outside of the electromagnet (503).

7. The advanced pre-reinforcement device for a mined-out section highway according to claim 1, characterized in that: The slurry fixed-point component (6) includes: a grouting adjustment pipe (601) which is slidably inserted into the grouting bolt (101); a slurry pump connection head (602) is fixedly installed at the tail of the grouting adjustment pipe (601); the slurry pump connection head (602) is used to be threadedly connected to the slurry outlet pipe joint of the grouting pump.

8. An advanced pre-reinforcement device for a highway in a goaf area according to claim 7, characterized in that: The slurry fixed-point component (6) further includes: a slurry outlet through groove (6011), a circle of slurry outlet through grooves (6011) are opened on the outer side of the front end of the grouting adjustment pipe (601); two retaining rings (603) are fixedly installed at the front end of the grouting adjustment pipe (601), and the two retaining rings (603) are respectively located on both sides of the circle of slurry outlet through grooves (6011); the retaining rings (603) are sleeved inside the grouting bolt (101).

9. A method for pre-reinforcing a highway in a goaf area in advance, using a device for pre-reinforcing a highway in a goaf area in advance as described in claim 8, characterized in that: The steps include: 1), Insert multiple grouting bolts (101) into the ground respectively, manually hold the grouting adjustment pipe (601) to lift and lower to adjust the height of the slurry outlet through groove (6011), and control the grouting position; 2), When the slurry leaks to the outside of the suction cavity (1011) on the grouting bolt (101) adjacent to the grouting bolt (101) being grouted, the slurry liquid level in the suction cavity (1011) gradually rises. When the slurry liquid surface contacts the two energized pieces (1013), the moisture of the slurry conducts the circuit, and the indicator light (102) lights up to prompt the slurry diffusion range.

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