Loose earth grouting reinforcing equipment

Abstract

The present application belongs to the technical field of tunnel construction, and particularly relates to a fluffy soil grouting reinforcement equipment which comprises a lining trolley, a grouting machine, a grouting pressure pipe, a grouting pipe, a square shell and a blocking slide plate. After segmental assembly in a tunnel is completed, the grouting pipe is passed through a grouting hole at the top of the lining trolley, so that the top end of the grouting pipe abuts against a waterproof plate of the tunnel. The grouting machine passes grouting liquid prepared in advance into the grouting pipe through the grouting pressure pipe, and then the grouting liquid is injected into the vault of the tunnel from the top end of the grouting pipe. After grouting is completed, the blocking slide plate is pushed to slide in the square shell, so that the through slot is dislocated from the inner ring of the grouting pipe, and the bottom of the grouting pipe is blocked by the blocking slide plate. The grouting liquid in the grouting pipe is blocked and cannot slide down, so that the probability of voids at the top of the grouting pipe is reduced, and the grouting reinforcement effect and waterproof performance are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel construction, in particular to a fluffy soil grouting reinforcement equipment. BACKGROUND

[0002] Shield construction has become the main construction method of urban tunnel construction, and the shield machine lays the supporting segment while tunneling. The ground in the city has a large number of buildings, especially in the fluffy soil layer around the tunnel, which increases the pressure on the tunnel, and in order to prevent groundwater from penetrating into the tunnel, grouting reinforcement needs to be carried out in time after the segment assembly is completed.

[0003] After the segment assembly in the tunnel is completed, the grouting hole at the top of the lining trolley is drilled by using a geological drilling machine, the grouting pipe is passed through the grouting hole, the top end of the grouting pipe is abutted to the waterproof plate of the tunnel, the grouting machine passes the prepared grouting liquid into the grouting pipe through the grouting pressure pipe, and then the grouting liquid is injected into the tunnel from the top end of the grouting pipe. After the grouting liquid is completely solidified, the excess part of the grouting pipe is cut off, and then the lining trolley advances to continue the repeated grouting.

[0004] During grouting reinforcement, in order to improve the construction efficiency, the grouting pressure pipe is separated from the grouting pipe after the grouting liquid is initially solidified, and the grouting reinforcement work of the next grouting hole is carried out. Although the grouting liquid has been initially solidified and cannot flow, the grouting liquid inside the grouting pipe will slide downward along the grouting pipe under the action of gravity, causing a gap at the top of the grouting pipe, and reducing the grouting reinforcement effect and waterproof performance.

[0005] Therefore, the present application provides a fluffy soil grouting reinforcement equipment. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the fluffy soil grouting reinforcement equipment comprises a lining trolley, a grouting machine, a grouting pressure pipe, a grouting pipe and a plugging unit; the top surface of the lining trolley is uniformly provided with a plurality of grouting holes, the inside of the grouting hole is slidably installed with a grouting pipe, the bottom of the grouting pipe is provided with a plugging unit, the bottom of the plugging unit is communicated with a grouting pressure pipe, the bottom of the lining trolley is provided with a grouting machine, and the low end of the grouting pressure pipe is communicated with the grouting machine.

[0008] The plugging unit comprises a square shell and a plugging slide plate; the top surface of the square shell is communicated with a grouting pipe, the bottom surface of the square shell is communicated with a grouting pressure pipe, the inside of the square shell is slidably installed with the plugging slide plate, and the middle of one end of the plugging slide plate is provided with a through slot; in operation, after the segmental lining of the tunnel is completed, drilling is performed at the top grouting hole of the lining trolley by using a geological drilling machine, the grouting pipe is passed through the grouting hole, the top end of the grouting pipe is abutted against the waterproof plate of the tunnel, the grouting liquid prepared by the grouting machine is fed into the grouting pipe through the grouting pressure pipe, and then the grouting liquid is injected into the vault of the tunnel from the top end of the grouting pipe; after the grouting is completed, the plugging slide plate is pushed to slide in the inside of the square shell, so that the through slot is dislocated with the inner ring of the grouting pipe, the bottom of the grouting pipe is blocked by the plugging slide plate, the grouting pressure pipe is separated from the bottom of the square shell, and the next grouting and reinforcement work is performed; the bottom of the grouting pipe is blocked by the plugging slide plate, so that the grouting liquid in the inside of the grouting pipe is blocked and cannot slide down, thereby reducing the probability of the gap at the top of the grouting pipe, and improving the grouting and reinforcement effect and the waterproof performance.

[0009] Preferably, a plurality of fixed flanges are welded to the inside top surface of the lining trolley, the inner ring of the fixed flange is sleeved on the outer ring of the grouting hole, the bottom surface of the fixed flange is bolted with a positioning flange, the top and bottom of the square shell are rotatably installed with an internal thread sleeve, the internal thread sleeve at the top is threadedly matched with the bottom of the positioning flange, the internal thread sleeve at the bottom is threadedly installed with a ball valve, the bottom of the ball valve is communicated with a grouting pressure gauge, and the bottom of the grouting pressure gauge is communicated with the grouting pressure pipe; the grouting pipe is positioned and fixed by bolted connection between the fixed flange and the positioning flange, the probability of shaking of the grouting pipe during grouting is reduced, and the stability of the grouting and reinforcement is improved; the ball valve is convenient for workers to timely adjust the flow rate of the grouting liquid and cut off the grouting liquid; the grouting pressure gauge is convenient for workers to monitor the pressure change of the grouting in real time, thereby being convenient for workers to judge the filling degree change of the grouting.

[0010] Preferably, an annular groove is formed in the top surface of the fixed flange, and a hollow rubber pad is fixedly connected in the inside of the annular groove; since the top of the lining trolley is an arc surface, the welding between the fixed flange and the top of the lining trolley is prone to gaps, causing leakage of the grouting liquid; in operation, when the fixed flange is welded to the top of the lining trolley, the hollow rubber pad in the inside of the annular groove is deformed by extrusion, the gaps between the fixed flange and the lining trolley are filled, meanwhile, the inner ring of the hollow rubber pad is deformed by extrusion into the inside of the fixed flange, the inner ring of the hollow rubber pad extrudes the outer wall of the grouting pipe, the gaps between the fixed flange and the lining trolley are sealed, and the gaps between the grouting pipe and the fixed flange are sealed, thereby reducing the probability of leakage of the grouting liquid.

[0011] Preferably, the outer ring of the fixed flange is fixedly connected with multiple inserts, and the inside of the inserts is fixedly connected with magnets; when the workers weld the fixed flange, other workers need to cooperate to pre-fix the fixed flange, and then use the electric welder to full weld between the outer ring of the fixed flange and the top wall of the lining trolley; during work, the inner ring of the fixed flange is aligned with the grouting hole, the fixed flange is attached to the top wall of the lining trolley, the magnets inside the inserts are attracted to the top wall of the lining trolley, the fixed flange is preliminarily fixed, thereby reducing the cooperation of other workers and facilitating the welding work of the workers.

[0012] Preferably, the top end of the grouting pipe is provided with an overflow groove, and the top outer ring of the grouting pipe is provided with multiple overflow ports; during work, the top end of the grouting pipe is placed on the waterproof plate of the tunnel, the grouting machine sends the grouting liquid into the inside of the grouting pipe, and the grouting liquid is discharged from the overflow groove and the overflow ports; through the overflow groove, the resistance of the waterproof plate of the tunnel to the top end of the grouting pipe is reduced, thereby improving the efficiency of the grouting liquid flowing out of the inside of the grouting pipe.

[0013] Preferably, the both sides of the blocking slide plate are fixedly connected with guide rods, the guide rods slide through the square shell, the opening side top surface of the guide rod is rotationally installed with a screw rod, the top of the side of the sliding direction of the blocking slide plate is fixedly connected with a threaded block, the screw rod rotationally penetrates the threaded block, and the screw rod is in threaded cooperation with the threaded block; during work, after grouting is completed, the workers rotate the screw rod to mobilize the blocking slide plate to slide, so that the blocking slide plate closes the bottom of the grouting pipe; through the screw rod driving the blocking slide plate to slide, the difficulty of the workers pushing the blocking slide plate to slide is reduced.

[0014] Preferably, the top of the inner ring of the square shell is fixedly connected with an elastic ring table, the top surface of the elastic ring table is in contact with the bottom surface of the grouting pipe, the outer ring of the elastic ring table is fixedly connected with multiple elastic strips, and the low end of the elastic strip is fixedly connected with the inner wall of the square shell; during work, when the square shell is installed to the bottom of the positioning flange through the internal thread sleeve, the top surface of the elastic ring table is brought into contact with the bottom of the grouting pipe, the elastic ring table is pressed against the bottom of the grouting pipe under the elastic force of the elastic strips, thereby reducing the probability of the grouting liquid in the inside of the grouting pipe entering between the positioning flange and the grouting pipe.

[0015] Preferably, the inner ring of the through groove is fixedly connected with multiple arc-shaped cutters, and the cross section of the arc-shaped cutter is triangular; during work, when the blocking slide plate slides to cut off the through hole in the middle of the square shell, the multiple arc-shaped cutters are driven to move to divide and block the flowing grouting liquid; through the arranged arc-shaped cutters, the sharpness of the inner ring of the through groove is improved, thereby improving the efficiency of blocking the grouting liquid.

[0016] Preferably, the inner circle blade of the arc-shaped cutter is provided with a plurality of notches, and the side wall of the notch is provided with an arc-shaped chamfer; the cutter blade of the arc-shaped cutter is serrated through the notches, and the arc-shaped chamfer improves the sharpness of the side of the notch, thereby improving the overall sharpness of the arc-shaped cutter; after the grouting liquid solidifies, the serrated blade of the arc-shaped cutter facilitates the staff to push the blocking slide plate to cut off the solidified grouting liquid.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The porous soil grouting reinforcement equipment, through the lining trolley, the grouting machine, the grouting pressure pipe, the grouting pipe, the square shell and the blocking slide plate; after the segment assembly in the tunnel is completed, drilling is performed at the top grouting hole of the lining trolley by using a geological drilling machine, the grouting pipe is passed through the grouting hole, the top end of the grouting pipe abuts against the waterproof plate of the tunnel, the grouting machine passes the prepared grouting liquid into the grouting pipe through the grouting pressure pipe, and then the grouting liquid is injected into the tunnel vault from the top end of the grouting pipe; after grouting is completed, the blocking slide plate is pushed to slide in the square shell, so that the through groove is dislocated from the inner circle of the grouting pipe, the blocking slide plate blocks the bottom of the grouting pipe, the grouting pressure pipe is separated from the bottom of the square shell, and the next grouting reinforcement work is performed; the bottom of the grouting pipe is blocked by the blocking slide plate, so that the grouting liquid in the grouting pipe is blocked and cannot slide down, thereby reducing the probability of voids at the top of the grouting pipe, and improving the grouting reinforcement effect and waterproof performance.

[0019] 2. The porous soil grouting reinforcement equipment, through the hollow rubber pad, the inlay block and the magnet; the magnet in the inlay block is attracted to the top wall of the lining trolley, the fixing flange is preliminarily fixed, the fixing flange is welded to the top of the lining trolley, the hollow rubber pad in the annular groove is deformed by extrusion, the gap between the fixing flange and the lining trolley is filled, at the same time, the inner circle of the hollow rubber pad is deformed by extrusion into the fixing flange, the inner circle of the hollow rubber pad extrudes the outer wall of the grouting pipe, the gap between the fixing flange and the lining trolley is sealed, and the gap between the grouting pipe and the fixing flange is sealed, thereby reducing the probability of leakage of the grouting liquid. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below with reference to the drawings.

[0021] Figure 1 is a perspective view of the embodiment one of the present application;

[0022] Figure 2 is a perspective view of the blocking unit in the embodiment one of the present application;

[0023] Figure 3 is a sectional view of the blocking unit in the embodiment one of the present application;

[0024] Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0025] Figure 5 This is an exploded view of the sealing unit in Embodiment 1 of the present invention;

[0026] Figure 6 This is a perspective view of the arc-shaped cutter in Embodiment 1 of the present invention;

[0027] Figure 7 This is a partial cross-sectional view of the shell in Embodiment 2 of the present invention;

[0028] In the diagram: 1. Lining trolley; 2. Grouting machine; 3. Grouting pressure pipe; 4. Grouting pipe; 5. Grouting hole; 6. Square shell; 7. Sealing slide plate; 8. Through groove; 9. Fixed flange; 10. Positioning flange; 11. Internal threaded fitting; 12. Ball valve; 13. Grouting pressure gauge; 14. Annular groove; 15. Hollow rubber gasket; 16. Insert; 17. Magnet; 18. Overflow groove; 19. Overflow port; 20. Guide rod; 21. Screw; 22. Threaded block; 23. Elastic ring platform; 24. Elastic strip; 25. Arc cutter; 26. Groove; 27. Annular rubber strip. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1

[0031] like Figures 1 to 3 As shown in the embodiment of the present invention, a loose soil grouting reinforcement device includes a lining trolley 1, a grouting machine 2, a grouting pressure pipe 3, a grouting pipe 4, and a sealing unit; the top surface of the lining trolley 1 is evenly provided with a plurality of grouting holes 5, the grouting pipe 4 is slidably installed inside the grouting holes 5, the bottom of the grouting pipe 4 is provided with a sealing unit, the bottom of the sealing unit is connected to the grouting pressure pipe 3, the bottom of the lining trolley 1 is provided with the grouting machine 2, and the bottom end of the grouting pressure pipe 3 is connected to the grouting machine 2;

[0032] The plugging unit comprises a square shell 6 and a plugging sliding plate 7; the top surface of the square shell 6 is communicated with a grouting pipe 4, the bottom surface of the square shell 6 is communicated with a grouting pressure pipe 3, the inside of the square shell 6 is slidingly installed with the plugging sliding plate 7, and a through slot 8 is formed in the middle of one end of the plugging sliding plate 7; in working, after the segmental assembly of the pipe in the tunnel is completed, drilling is carried out at the top grouting hole 5 of the lining trolley 1 by using a geological drilling machine, the grouting pipe 4 is passed through the grouting hole 5, the top end of the grouting pipe 4 is abutted against the waterproof plate of the tunnel, the grouting machine 2 passes the prepared grouting liquid into the grouting pipe 4 through the grouting pressure pipe 3, and then the grouting liquid is injected into the vault of the tunnel from the top end of the grouting pipe 4; after the grouting is completed, the plugging sliding plate 7 is pushed to slide in the inside of the square shell 6, so that the through slot 8 is dislocated with the inner ring of the grouting pipe 4, the plugging sliding plate 7 blocks the bottom of the grouting pipe 4, the grouting pressure pipe 3 is separated from the bottom of the square shell 6, and the next grouting and reinforcement work is carried out; the bottom of the grouting pipe 4 is blocked by the plugging sliding plate 7, so that the grouting liquid in the inside of the grouting pipe 4 is blocked and cannot slide down, thereby the probability of the gap generated at the top of the grouting pipe 4 is reduced, and then the grouting and reinforcement effect and the waterproof performance are improved.

[0033] As shown in Figure 2 , Figure 3 and Figure 5 , a plurality of fixed flanges 9 are welded to the inside top surface of the lining trolley 1, the inner ring of the fixed flange 9 is sleeved on the outer ring of the grouting hole 5, the bottom surface of the fixed flange 9 is bolted with a positioning flange 10, the top and bottom of the square shell 6 are rotationally installed with an inner thread sleeve 11, the top inner thread sleeve 11 is threadedly matched with the bottom of the positioning flange 10, the bottom inner thread sleeve 11 is threadedly installed with a ball valve 12, the bottom of the ball valve 12 is communicated with a grouting pressure gauge 13, and the bottom of the grouting pressure gauge 13 is communicated with the grouting pressure pipe 3; the grouting pipe 4 is positioned and fixed by bolted connection between the fixed flange 9 and the positioning flange 10, the probability of shaking of the grouting pipe 4 during grouting is reduced, and the stability of the grouting and reinforcement is improved; the ball valve 12 is convenient for the staff to timely adjust the flow rate of the grouting liquid and cut off the grouting liquid; the grouting pressure gauge 13 is convenient for the staff to monitor the pressure change of the grouting in real time, thereby the staff can conveniently judge the filling degree change of the grouting.

[0034] As shown in Figure 2 , Figure 3 and Figure 5As shown, the top surface of the fixed flange 9 is provided with an annular groove 14, and a hollow rubber pad 15 is fixed in the annular groove 14. Because the top of the lining trolley 1 is an arc surface, a gap is easily generated between the fixed flange 9 and the top of the lining trolley 1 when welding, which causes the leakage of the grouting liquid. When the fixed flange 9 is welded to the top of the lining trolley 1, the hollow rubber pad 15 in the annular groove 14 is deformed by extrusion, the gap between the fixed flange 9 and the lining trolley 1 is filled, and the inner ring of the hollow rubber pad 15 is deformed by extrusion to the inside of the fixed flange 9, so that the inner ring of the hollow rubber pad 15 extrudes the outer wall of the grouting pipe 4, which not only seals the gap between the fixed flange 9 and the lining trolley 1, but also seals the gap between the grouting pipe 4 and the fixed flange 9, thereby reducing the probability of leakage of the grouting liquid.

[0035] As shown in Figure 2 , Figure 3 and Figure 5 , the outer ring of the fixed flange 9 is surrounded by a plurality of inserts 16, and the inserts 16 are fixedly connected with magnets 17. When the fixed flange 9 is welded by the worker, other workers need to cooperate to preliminarily fix the fixed flange 9, and then use the electric welding machine to fully weld the outer ring of the fixed flange 9 and the top wall of the lining trolley 1. In work, the inner ring of the fixed flange 9 is aligned with the grouting hole 5, and the fixed flange 9 is attached to the top wall of the lining trolley 1, so that the magnets 17 in the inserts 16 are attracted to the top wall of the lining trolley 1, and the fixed flange 9 is preliminarily fixed, thereby reducing the cooperation of other workers and facilitating the welding work of the workers.

[0036] As shown in Figure 2 , Figure 3 and Figure 5 , the top end of the grouting pipe 4 is provided with an overflow groove 18, and a plurality of overflow ports 19 are arranged around the outer ring of the top of the grouting pipe 4. In work, the top end of the grouting pipe 4 is placed on the waterproof plate of the tunnel, the grouting machine 2 sends the grouting liquid into the inside of the grouting pipe 4, and the grouting liquid is discharged from the overflow groove 18 and the overflow ports 19. By arranging the overflow groove 18, the blockage of the top end of the grouting pipe 4 by the waterproof plate of the tunnel is reduced, thereby improving the efficiency of the grouting liquid flowing out of the inside of the grouting pipe 4.

[0037] As shown in Figure 2 , Figure 3 and Figure 5As shown, the two sides of the sealing slide plate 7 are fixedly connected with guide rods 20, the guide rods 20 slide through the square shell 6, the opening side top surface of the guide rod 20 is rotationally installed with a screw rod 21, the side top of the sliding direction of the sealing slide plate 7 is fixedly connected with a threaded block 22, the screw rod 21 rotationally penetrates the threaded block 22, and the screw rod 21 is in threaded cooperation with the threaded block 22; in working, after grouting is completed, the staff rotates the screw rod 21 to mobilize the sealing slide plate 7 to slide, so that the sealing slide plate 7 closes the bottom of the grouting pipe 4; the sealing slide plate 7 is driven to slide by the screw rod 21, which reduces the difficulty of the staff to push the sealing slide plate 7 to slide.

[0038] As shown in Figures 4 to 5 As shown, the inner ring top of the square shell 6 is fixedly connected with an elastic ring table 23, the top surface of the elastic ring table 23 is in contact with the bottom surface of the grouting pipe 4, the outer ring of the elastic ring table 23 is fixedly connected with a plurality of elastic strips 24, and the bottom ends of the elastic strips 24 are fixedly connected with the inner wall of the square shell 6; in working, when the square shell 6 is installed to the bottom of the positioning flange 10 through the internal thread sleeve 11, the top surface of the elastic ring table 23 is brought into contact with the bottom of the grouting pipe 4, the elastic ring table 23 is pressed against the bottom of the grouting pipe 4 under the elastic force of the elastic strips 24, thereby reducing the probability of the grouting liquid in the grouting pipe 4 entering between the positioning flange 10 and the grouting pipe 4.

[0039] As shown in Figures 4 to 6 As shown, the inner ring of the through groove 8 is fixedly connected with a plurality of arc-shaped cutters 25, and the cross section of the arc-shaped cutter 25 is triangular; in working, when the sealing slide plate 7 slides to cut off the through hole in the middle of the square shell 6, the plurality of arc-shaped cutters 25 are driven to move to segment and block the flowing grouting liquid; the sharpness of the inner ring of the through groove 8 is improved through the arranged arc-shaped cutters 25, thereby improving the efficiency of blocking the grouting liquid.

[0040] As shown in Figure 6 As shown, a plurality of notches 26 are formed in the inner ring blade edge of the arc-shaped cutter 25, and an arc-shaped chamfer is formed in the side wall of the notch 26; the blade edge of the arc-shaped cutter 25 is serrated through the notch 26, the arc-shaped chamfer is formed, the sharpness of the side of the notch 26 is improved, and thus the overall sharpness of the arc-shaped cutter 25 is improved; after the grouting liquid solidifies, the serrated blade edge of the arc-shaped cutter 25 facilitates the staff to push the sealing slide plate 7 to cut off the solidified grouting liquid.

[0041] Embodiment two

[0042] As shown in Figure 7As shown, the comparative example one, wherein another embodiment of the present application is: the internal top surface and bottom surface of the square shell 6 are fixed with a plurality of annular rubber strips 27, the inner circle of the annular rubber strip 27 is sleeved on the outer circle of the through hole in the middle of the square shell 6, and the annular rubber strip 27 is in sliding fit with the outer wall of the blocking slide plate 7; By setting the annular rubber strip 27, the grouting liquid is blocked in the through hole in the middle of the square shell 6, which reduces the grouting liquid into the gap between the square shell 6 and the blocking slide plate 7, thereby reducing the probability of adhesion between the square shell 6 and the blocking slide plate 7 caused by the solidification of the grouting liquid, and then improving the smoothness of the sliding of the blocking slide plate 7.

[0043] When working: after the pipe segment assembly in the tunnel is completed, drilling is carried out at the grouting hole 5 on the top of the lining trolley 1 by using a geological drilling machine; the inner circle of the fixed flange 9 is aligned with the grouting hole 5, and the fixed flange 9 is attached to the top wall of the lining trolley 1, so that the magnet 17 inside the inlay 16 is attracted to the top wall of the lining trolley 1, the fixed flange 9 is preliminarily fixed, the hollow rubber pad 15 inside the annular groove 14 is deformed by extrusion, and the gap between the fixed flange 9 and the lining trolley 1 is filled, at the same time, the inner circle of the hollow rubber pad 15 is deformed by extrusion into the inside of the fixed flange 9; the fixed flange 9 and the lining trolley 1 are welded; the positioning flange 10 is installed to the bottom of the fixed flange 9 by using a bolt; the grouting pipe 5 passes through the positioning flange 10 and the grouting hole 5, and the top end of the grouting pipe 4 is abutted to the waterproof plate of the tunnel; the inner circle of the hollow rubber pad 15 extrudes the outer wall of the grouting pipe 4, and the hollow rubber pad 15 not only seals the gap between the fixed flange 9 and the lining trolley 1, but also seals the gap between the grouting pipe 4 and the fixed flange 9;

[0044] When the square shell 6 is installed to the bottom of the positioning flange 10 through the internal thread assembly 11, the top surface of the elastic ring table 23 is brought into contact with the bottom of the grouting pipe 4, and the elastic ring table 23 is deformed by extrusion to the bottom of the grouting pipe 4 under the elastic force of the elastic strip 24; the ball valve 12 is installed to the bottom of the square shell 6, and then the grouting pressure gauge 13 is installed to the bottom of the ball valve 12, and the grouting pressure gauge 13 is communicated with the grouting machine 2 by using the grouting pressure pipe 3;

[0045] The grouting liquid passes through the grouting pressure pipe 3, the grouting pressure gauge 13, the ball valve 12 and the square shell 6 in sequence by the grouting machine 2, enters the inside of the grouting pipe 4, and then is injected into the vault of the tunnel from the top end of the grouting pipe 4; at the same time, the staff monitors the pressure change of grouting in real time through the grouting pressure gauge 13, so as to judge the filling condition of the grouting liquid;

[0046] After the grouting is completed, the worker closes the ball valve 12, rotates the screw rod 21, adjusts the sliding of the blocking slide plate 7, so that the through slot 8 is dislocated with the inner ring of the grouting pipe 4, the blocking slide plate 7 blocks the bottom of the grouting pipe 4, the grouting pressure pipe 3 is separated from the bottom of the square shell 6, and the next grouting reinforcement work is carried out; the bottom of the grouting pipe 4 is blocked by the blocking slide plate 7, so that the grouting liquid in the grouting pipe 4 is blocked and cannot slide down, thereby reducing the probability of voids at the top of the grouting pipe 4, and then improving the effect of grouting reinforcement and waterproof performance.

[0047] The above front, rear, left, right, top and bottom are based on the drawings of the specification Figure 1 As a standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and the like.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application.

[0049] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A bulk soil grouting reinforcement apparatus, characterized by: The utility model provides a lining trolley (1), grouting machine (2), grouting pressure pipe (3), grouting pipe (4) and blocking unit, the top of lining trolley (1) evenly is equipped with a plurality of grouting hole (5), the inside sliding installation of grouting hole (5) has grouting pipe (4), the bottom of grouting pipe (4) is provided with blocking unit, the bottom of blocking unit is connected with grouting pressure pipe (3), the bottom of lining trolley (1) is provided with grouting machine (2), the low end of grouting pressure pipe (3) is connected with grouting machine (2), The blocking unit includes a square shell (6) and a blocking slide plate (7). The top surface of the square shell (6) is connected with the grouting pipe (4). The bottom surface of the square shell (6) is connected with the grouting pressure pipe (3). The inside of the square shell (6) is slidingly installed with the blocking slide plate (7). One end of the blocking slide plate (7) is provided with a through slot (8). Both sides of the blocking slide plate (7) are fixedly connected with guide rods (20). The guide rods (20) slidingly penetrate the square shell (6). The top surface of the opening side of the guide rod (20) is rotatably installed with a screw rod (21). The top of the side of the sliding direction of the blocking slide plate (7) is fixedly connected with a threaded block (22). The screw rod (21) rotatably penetrates the threaded block (22). The screw rod (21) is threadedly connected with the threaded block (22). The inner ring of the through slot (8) is fixedly connected with a plurality of arc-shaped cutters (25). The cross section of the arc-shaped cutters (25) is triangular. The inner ring blade of the arc-shaped cutters (25) is provided with a plurality of notches (26). The side wall of the notches (26) is provided with an arc-shaped chamfer.

2. A bulk soil grouting reinforcement apparatus according to claim 1, characterized in that: The inside top surface of the lining trolley (1) is welded with a plurality of fixed flanges (9). The inner ring of the fixed flanges (9) is sleeved on the outer ring of the grouting hole (5). The bottom surface of the fixed flanges (9) is bolted with a positioning flange (10). The top and bottom of the square shell (6) are rotatably installed with internally-threaded sleeves (11). The top internally-threaded sleeve (11) is threadedly connected with the bottom of the positioning flange (10). The bottom internally-threaded sleeve (11) is threadedly installed with a ball valve (12). The bottom of the ball valve (12) is connected with a grouting pressure gauge (13). The bottom of the grouting pressure gauge (13) is connected with the grouting pressure pipe (3).

3. A bulk soil grout reinforcement apparatus according to claim 2, wherein: The top surface of the fixed flange (9) is provided with an annular groove (14). The inside of the annular groove (14) is fixedly connected with a hollow rubber pad (15).

4. A bulk soil grout injection reinforcement apparatus according to claim 2, wherein: The outer ring of the fixed flange (9) is fixedly connected with a plurality of inserts (16). The inside of the inserts (16) is fixedly connected with magnets (17).

5. A bulk soil grout injection reinforcement apparatus according to claim 1, wherein: The top end of the grouting pipe (4) is provided with an overflow groove (18). The top outer ring of the grouting pipe (4) is provided with a plurality of overflow openings (19).

6. A bulk soil grout injection reinforcement apparatus according to claim 1, wherein: The inner ring top of the square shell (6) is fixedly connected with an elastic ring table (23). The top surface of the elastic ring table (23) is in contact with the bottom surface of the grouting pipe (4). The outer ring of the elastic ring table (23) is fixedly connected with a plurality of elastic strips (24). The low end of the elastic strip (24) is fixedly connected with the inner wall of the square shell (6).

7. A bulk soil grout injection reinforcement apparatus according to claim 1, wherein: The inner top surface and bottom surface of the square shell (6) are fixed with a plurality of annular rubber strips (27), the inner ring of the annular rubber strip (27) is sleeved on the outer ring of the through hole in the middle of the square shell (6), and the annular rubber strip (27) is in sliding fit with the outer wall of the blocking sliding plate (7).

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