A shield tunnel compaction grouting equipment

Abstract

The invention discloses a shield tunnel compaction grouting equipment, comprising an underground tunnel and a grouting device, wherein the grouting device moves in the underground tunnel to grout the underground tunnel; the grouting device comprises a grouting pipe and a grouting machine body, a grouting hole is provided on the side wall of the underground tunnel, the grouting hole corresponds to the grouting pipe, the grouting machine body injects slurry into the corresponding grouting hole through the grouting pipe, and the grouting pipe is installed on the grouting machine body through a grouting mechanism; when the invention is in use, the grouting mechanism is installed on the grouting machine body, and the grouting mechanism is driven to move when the grouting machine body moves, and the position of the grouting pipe is changed by the grouting mechanism, so as to inject slurry into the grouting hole provided on the side wall of the underground tunnel, so as to play the role of timely grouting to stabilize the structure of the underground tunnel and enhance the safety of the shield tunnel.

Description

Technical Field

[0001] The invention belongs to the technical field of shield tunnels, and in particular relates to a shield tunnel compaction grouting device. Background Art

[0002] With the acceleration of urbanization, road construction projects have become increasingly large. During the expansion and construction of underground road facilities, cracks or fissures are prone to occur inside the shield tunnel. The potential safety hazards caused by cracks cannot be ignored. Therefore, it is necessary to grout and reinforce the cracked areas of the shield tunnel to ensure the safety of the shield tunnel.

[0003] Compacted grouting refers to pouring a thick slurry into the holes drilled in the foundation soil in advance and squeezing it towards the soil, forming slurry bubbles at the grouting site, and the diffusion of the slurry compresses the surrounding soil. The slurry completely replaces the soil in the grouting range, and there is a large plastic deformation zone in the vicinity of the grouting. The soil in the area far from the slurry bubble undergoes elastic deformation, so the density of the soil increases significantly, achieving the purpose of strengthening the structural strength in the shield tunnel area;

[0004] However, the existing compaction grouting is usually carried out one by one through a grouting machine, and the slurry is injected into the grouting holes pre-drilled in the shield tunnel. For the grouting of the top area and the larger area of ​​the side wall, the efficiency of grouting one by one is relatively low, and the grouting operation in the top area is also relatively inconvenient. The overall grouting reinforcement time is relatively long, which brings hidden dangers to the safety of operators and the shield tunnel area. Summary of the invention

[0005] The purpose of the present invention is to provide a shield tunnel compaction grouting equipment to solve the problem that for grouting in the top area and a larger area of ​​the side wall, the efficiency of grouting one by one is relatively low, the grouting operation in the top area is also relatively inconvenient, and the overall grouting reinforcement time is long, which brings hidden dangers to the safety of operators and the shield tunnel area.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A shield tunnel compaction grouting device comprises an underground tunnel and a grouting device, wherein the grouting device moves in the underground tunnel to grout the underground tunnel; the grouting device comprises a grouting pipe and a grouting machine body, grouting holes are opened on the side wall of the underground tunnel, the grouting holes correspond to the grouting pipes, the grouting machine body injects slurry into the corresponding grouting holes through the grouting pipes, and the grouting pipes are installed on the grouting machine body through a grouting mechanism.

[0008] Preferably, the grouting mechanism comprises an arc track, the arc track is hollowed out, and a plurality of grouting heads are slidably mounted thereon, the grouting heads are connected to the grouting machine body through a grouting pipe, and the grouting pipe is a corrugated pipe;

[0009] A rotating column is rotatably installed on one side of the grouting machine body, and the rotating column is fixedly connected to the inner wall of the arc track through a bracket. A gear ring is fixedly connected to the outer surface of the rotating column, and a gear is meshed and transmitted on the outer side of the gear ring. The gear is fixedly installed on the output shaft of the driving motor, and the driving motor is fixedly installed on the side wall of the grouting machine body.

[0010] Preferably, the grouting pipes are divided into two groups, the two groups of grouting pipes are symmetrically distributed on both sides of the bracket, and two groups of grouting heads are provided on the arc track, and the grouting pipes correspond to the grouting heads one by one.

[0011] A central pipe is provided in the middle of the rotating column, and a plurality of grouting pipes are converged and connected to the central pipe. The central pipe is connected to the grouting machine body via a rotating joint.

[0012] Preferably, the grouting head includes a grouting end and a sliding seat, the sliding seat is slidably mounted on an arc track, and a flexible tube passes through the sliding seat, one end of the flexible tube is connected to the grouting pipe, and the other end is connected to the grouting end, the grouting end is arranged into a T-shaped structure, and a telescopic rod is hinged on the larger end of the two ends of the grouting end, and the base of the telescopic rod is fixed on the sliding seat.

[0013] Preferably, at least two telescopic rods are provided, and the telescopic rods are evenly arranged along the circumference of the grouting end.

[0014] Preferably, an annular sealing ring is embedded in the larger end of the two ends of the grouting end, and the sealing ring is located on the side away from the flexible tube.

[0015] Preferably, a transmission mechanism is provided on the sliding seat, and the transmission mechanism includes small transmission teeth, and the small transmission teeth are rotatably mounted on the side of the sliding seat, and the small transmission teeth are connected to a driving motor fixed on the sliding seat, and a tooth portion meshing with the small transmission teeth is provided on the side wall of the arc track.

[0016] Technical effects and advantages of the present invention: Compared with the prior art, the shield tunnel compaction grouting equipment proposed by the present invention has the following advantages:

[0017] 1. When the present invention is in use, the grouting mechanism is installed on the grouting machine body. When the grouting machine body moves, the grouting mechanism is driven to move. The grouting mechanism is used to change the position of the grouting pipe, so as to inject slurry into the grouting holes opened on the side wall of the underground tunnel, thereby playing the role of timely grouting to stabilize the underground tunnel structure and enhance the safety of the shield tunnel.

[0018] 2. The present invention sets an arc track in the grouting mechanism to allow the grouting head to slide in the arc track, thereby adjusting the grouting position, and multiple grouting heads can work synchronously after adjusting their positions to align with the grouting holes. Compared with grouting reinforcement one by one, the grouting efficiency of the present application has obvious advantages, so it has a high practical promotion value.

[0019] 3. The present invention designs the structure of the grouting head so that when the grouting head grouts the grouting hole, the controller first controls the electric telescopic rod to extend, and the telescopic rod drives the grouting end to be inserted into the grouting hole. The end of the T-shaped grouting end can cover the end face of the grouting hole, thereby reducing the splashing of excessive grouting and adjusting it to overflow from the gap between the grouting end and the grouting hole. On the one hand, it reduces the waste of slurry. Once it is found that slurry overflows from the grouting end, it indicates that the grouting is completed and the grouting is stopped immediately. On the other hand, it reduces the situation of excessive grouting and spraying from the grouting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a three-dimensional structure of an embodiment of the present invention.

[0021] Figure 2 For the embodiment of the present invention Figure 1 A schematic diagram of the enlarged local structure in the middle.

[0022] Figure 3 It is a schematic diagram of the structure of an embodiment of the present invention when viewed from the front.

[0023] Figure 4 It is a schematic structural diagram of an embodiment of the present invention when viewed from the side.

[0024] Figure 5 For the embodiment of the present invention Figure 4 Schematic diagram of the cross-sectional structure of BB. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The present invention provides Figure 1-5 A shield tunnel compaction grouting equipment is shown.

[0027] Embodiment 1:

[0028] The invention comprises an underground tunnel 1 and a grouting device, wherein the grouting device moves in the underground tunnel 1 to perform grouting on the underground tunnel 1; the grouting device comprises a grouting pipe 2 and a grouting machine body 3, a grouting hole 4 is provided on the side wall of the underground tunnel 1, the grouting hole 4 corresponds to the grouting pipe 2, the grouting machine body 3 injects slurry into the corresponding grouting hole 4 through the grouting pipe 2, and the grouting pipe 2 is installed on the grouting machine body 3 through a grouting mechanism 5. When in use, the grouting mechanism 5 is installed on the grouting machine body 3, and the grouting mechanism 5 is driven to move when the grouting machine body 3 moves, and the position of the grouting pipe 2 is changed by the grouting mechanism 5, so as to inject slurry into the grouting hole 4 provided on the side wall of the underground tunnel 1, so as to play the role of timely grouting to stabilize the structure of the underground tunnel 1 and enhance the safety of the shield tunnel.

[0029] Furthermore, the grouting mechanism 5 includes an arc track 51, the arc track 51 is hollowed out, and a plurality of grouting heads 52 are slidably mounted, the grouting heads 52 are connected to the grouting machine body 3 through a grouting pipe 2, and the grouting pipe 2 is a corrugated pipe;

[0030] A rotating column 53 is rotatably installed on one side of the grouting machine body 3. The rotating column 53 is fixedly connected to the inner wall of the arc track 51 through a bracket 54. A gear ring 55 is fixedly connected to the outer surface of the rotating column 53. A gear 56 is meshed and driven on the outer side of the gear ring 55. The gear 56 is fixedly installed on the output shaft of a driving motor 57. The driving motor 57 is fixedly installed on the side wall of the grouting machine body 3. Since the top, side walls and bottom of the shield tunnel need to be punched and grouted for reinforcement, the present application sets an arc track 51 in the grouting mechanism 5 to allow the grouting head 52 to slide in the arc track 51, thereby adjusting the grouting position, and multiple grouting heads 52 can work synchronously after adjusting their positions to align with the grouting holes 4. Compared with grouting reinforcement one by one in turn, the grouting efficiency of the present application is obviously superior, so it has a high practical promotion value; at the same time, the grouting pipe 2 made of corrugated pipe is moved along with the grouting head 52. The elastic change of the row length allows the grouting head 52 to move more smoothly; when grouting is required for the grouting hole 4 at the top or bottom, it is only necessary to start the driving motor 57 installed on the side wall of the grouting body 3. The driving motor 57 can drive the rotating column 53 to rotate through the meshing transmission of the gear 56. The rotating column 53 drives the entire arc track 51 to rotate through the bracket 54, so as to realize the grouting position adjustment of the grouting head 52 in the circumferential direction, which is convenient and fast; the outer surface of the arc track 51 matches the inner circle of the underground tunnel 1.

[0031] Furthermore, the grouting pipes 2 are divided into two groups, and the two groups of grouting pipes 2 are symmetrically distributed on both sides of the bracket 54. Two groups of grouting heads 52 are provided on the arc track 51, and the grouting pipes 2 correspond to the grouting heads 52 one by one.

[0032] A central pipe 6 is provided in the middle of the rotating column 53, and a plurality of the grouting pipes 2 are converged and connected to the central pipe 6, and the central pipe 6 is connected to the grouting machine body 3 via a rotating joint. Through the multiple-group design of the grouting pipes 2 and the grouting heads 52, the area covered by the grouting heads 52 is further increased, so that the grouting holes 4 within the area can be grouted at one time, and the adjustment efficiency is further increased, or the multiple groups of grouting heads 52 and grouting pipes 2 can be used as alternatives, and when one group is damaged, another group can be used as a substitute, thereby extending the effective operation time of the entire grouting mechanism 5; and the setting of the rotating structure ensures that the grouting mechanism 5 will not interfere with the normal slurry delivery of the grouting machine body 3 when rotating.

[0033] Embodiment 2:

[0034] The difference between Implementation 2 and Implementation 1 is that the grouting head 52 includes a grouting end 521 and a sliding seat 522, the sliding seat 522 is slidably installed on an arc track, and a flexible tube 523 passes through the sliding seat 522, one end of the flexible tube 523 is connected to the grouting pipe 2, and the other end is connected to the grouting end 521, the grouting end 521 is arranged in a T-shaped structure, and a telescopic rod 524 is hinged on the larger end of the two ends of the grouting end 521, and the base of the telescopic rod 524 is fixed on the sliding seat 522. By designing the structure of the grouting head 52, when the grouting head 52 is grouting the grouting hole 4, the controller is first used to control the electric telescopic rod 524 to extend, and the telescopic rod 524 drives the grouting end 521 to be inserted into the grouting hole 4. The end of the T-shaped grouting end 521 can cover the end face of the grouting hole 4, weakening the excessive splashing of grouting, and adjusting it to overflow from the gap between the grouting end 521 and the grouting hole 4. On the one hand, the waste of slurry is reduced. Once it is found that there is slurry from If the grouting end 521 overflows, it means that the grouting is completed and the grouting is stopped immediately; on the other hand, it reduces the situation of excessive grouting and spraying grout from the grouting holes 4; the setting of the flexible tube 523 ensures the connectivity between the grouting end 521 and the grouting pipe 2 in the telescopic state, and extends the telescopic distance of the grouting end 521; the grouting end 521 in the retracted state of the telescopic rod 524 has a certain distance from the shield tunnel and is not easy to interfere, thereby facilitating the sliding position adjustment action of the sliding seat 522 in the arc track 51.

[0035] Furthermore, at least two telescopic rods 524 are provided, and the telescopic rods 524 are evenly arranged along the circumference of the grouting end 521. The multiple telescopic rods 524 are distributed circumferentially, which enhances the support effect on the grouting end 521, increases the strength of the grouting structure at this location, and ensures the smooth progress of grouting.

[0036] Furthermore, an annular sealing ring 525 is embedded in the larger end of the two ends of the grouting end 521, and the sealing ring is located on the side away from the flexible tube 523. The annular sealing ring 525 contacts the surface of the grouting hole 4 before the T-shaped grouting end 521, so that it is elastically deformed under the thrust of the telescopic rod 524 and fits in the empty space of the grouting hole 4, thereby enhancing the sealing of the grouting hole 4 and further reducing the overflow and waste of slurry.

[0037] Embodiment 3:

[0038] The sliding seat 522 is provided with a transmission mechanism 7, and the transmission mechanism 7 includes a small transmission tooth 71. The small transmission tooth 71 is rotatably mounted on the side of the sliding seat 522, and the small transmission tooth 71 is connected to a driving motor 72 fixed on the sliding seat 522. The side wall of the arc track 51 is provided with a tooth portion 73 that meshes with the small transmission tooth 71.

[0039] When in use, the controller controls the corresponding transmission mechanism 7 to work, so as to adjust the position of the corresponding sliding seat 522. The specific working process is as follows: the controller controls the determined driving motor 72 to start, and the driving motor 72 drives the connected small transmission tooth 71 to rotate. The small transmission tooth 71 engages with the tooth portion 73 on the arc track 51 in a rotating state, so that the small transmission tooth 71 converts the rotational motion on the tooth portion 73 into the position movement of the sliding seat 522, thereby adjusting the position of the connected grouting end 521 and the telescopic rod 524 on the arc track 51, greatly improving the accuracy and freedom of the position adjustment of the grouting end 521, and further improving the efficiency of grouting reinforcement of the shield tunnel; it should be noted that the sliding seat 522 is limited in the arc track 51 and can only slide along the arc track 51, and cannot produce displacement in other directions.

[0040] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shield tunnel compaction grouting device, comprising an underground tunnel (1) and a grouting device, characterized in that: The grouting device moves in the underground tunnel (1) to perform grouting on the underground tunnel (1); the grouting device comprises a grouting pipe (2) and a grouting machine body (3); a grouting hole (4) is provided on the side wall of the underground tunnel (1); the grouting hole (4) corresponds to the grouting pipe (2); the grouting machine body (3) injects slurry into the corresponding grouting hole (4) through the grouting pipe (2); the grouting pipe (2) is mounted on the grouting machine body (3) via a grouting mechanism (5); The grouting mechanism (5) comprises an arc track (51), the arc track (51) is hollowed out and has a plurality of grouting heads (52) slidably mounted thereon, the grouting heads (52) are connected to the grouting machine body (3) via a grouting pipe (2), and the grouting pipe (2) is a corrugated pipe; A rotating column (53) is rotatably mounted on one side of the grouting machine body (3); the rotating column (53) is fixedly connected to the inner wall of the arc track (51) via a bracket (54); a gear ring (55) is fixedly connected to the outer surface of the rotating column (53); a gear (56) is meshed and driven on the outer side of the gear ring (55); the gear (56) is fixedly mounted on the output shaft of a driving motor (57); and the driving motor (57) is fixedly mounted on the side wall of the grouting machine body (3).

2. A shield tunnel compaction grouting equipment according to claim 1, characterized in that: The grouting pipes (2) are divided into two groups, and the two groups of grouting pipes (2) are symmetrically distributed on both sides of the bracket (54). Two groups of grouting heads (52) are provided on the arc track (51), and the grouting pipes (2) correspond to the grouting heads (52) one by one. A central pipe (6) is provided in the middle of the rotating column (53), and a plurality of grouting pipes (2) are converged and connected to the central pipe (6). The central pipe (6) is connected to the grouting machine body (3) via a rotating joint.

3. The shield tunnel compaction grouting equipment according to claim 2, characterized in that: The grouting head (52) comprises a grouting end (521) and a sliding seat (522). The sliding seat (522) is slidably mounted on the arc track (51), and a flexible tube (523) runs through the sliding seat (522). One end of the flexible tube (523) is connected to the grouting pipe (2), and the other end is connected to the grouting end (521). The grouting end (521) is arranged in a T-shaped structure. A telescopic rod (524) is hinged on the larger end of the two ends of the grouting end (521), and the base of the telescopic rod (524) is fixed on the sliding seat (522).

4. The shield tunnel compaction grouting equipment according to claim 3, characterized in that: At least two telescopic rods (524) are provided, and the telescopic rods (524) are evenly arranged along the circumference of the grouting end head (521).

5. The shield tunnel compaction grouting equipment according to claim 4, characterized in that: An annular sealing ring (525) is embedded in the larger end of the two ends of the grouting end (521), and the sealing ring is located on the side away from the flexible tube (523).

6. The shield tunnel compaction grouting equipment according to claim 5, characterized in that: The sliding seat (522) is provided with a transmission mechanism (7), the transmission mechanism (7) comprising a small transmission tooth (71), the small transmission tooth (71) being rotatably mounted on a side of the sliding seat (522), the small transmission tooth (71) being connected to a driving motor (72) fixed on the sliding seat (522), and a tooth portion (73) meshing with the small transmission tooth (71) being provided on a side wall of the arc track (51).

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