A grouting material recovery system in a synchronous grouting pipe when a shield machine stops running

Abstract

The present invention discloses a system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running, characterized in that the system includes not only a grouting material storage tank, a grouting pump, and a grouting pipe for storing slurry in the synchronous grouting system of the shield machine, but also additional components such as a water storage tank, a recovery pipe for recovering slurry and water, a waste liquid recovery tank for storing waste water, and a water pump. The system also includes a spherical valve switch for controlling the flow direction of liquid inside the system. The system can recover the slurry in the grouting pipe when the shield machine suspends construction, avoiding the problem of slurry solidification inside the grouting pipe, and reducing the loss of slurry by recycling the slurry. The system can be automatically operated and completed when the shield machine suspends construction, without adding extra workload or affecting normal construction operations.

Description

Technical Field

[0001] The invention relates to the technical field of shield tunnel construction, and in particular to a system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running. Background Art

[0002] During the construction of shield tunnels, shield machines will inevitably encounter various emergencies, such as the need to replace tools or other parts, so shield machines often stop during tunnel excavation. In this case, the synchronous grouting system of the shield machine will also stop running, causing the grouting material in the grouting pipe to no longer flow. When the shield machine is shut down for a long time, the slurry will gradually solidify during this period and block the grouting pipe. Once the grouting pipe is blocked, it is very difficult to clear it, which makes it impossible for the synchronous grouting system to continue to operate normally, seriously affecting the construction progress, increasing construction costs, and even inducing other engineering accidents. Therefore, how to solve the problem of preventing grouting from being blocked due to slurry solidification during the shutdown process of the shield machine is crucial to the smooth construction of shield tunnels.

[0003] At present, during the construction of shield tunnels, shield machines are often equipped with spare grouting pipes. Once the grouting pipes are blocked, the spare grouting pipes will be immediately replaced to continue the synchronous grouting work. However, this method is actually only a temporary solution and not a fundamental solution. The grouting pipes that a shield machine can be equipped with are always limited, and it is inevitable that the spare grouting pipes will also be blocked during construction. In this case, the only option is to dredge the grouting pipes or even replace them, which is bound to greatly increase the difficulty of construction and affect the construction progress. In view of the above, the present invention proposes a system for automatically recovering grouting materials in the synchronous grouting pipe when the shield machine stops running to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running, which has a reasonable structure, effectively prevents the slurry in the grouting pipe from solidifying, and has good use effect.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running, comprising a shield shell, a grouting pump, a grouting pipe, an input pipe, and a mortar storage tank. The grouting pump is arranged inside the shield machine, and the shield shell is the external shell of the shield machine. The inlet end of the grouting pump is connected to the mortar storage tank through the input pipe, and the outlet end of the grouting pump is connected to the end of the shield shell through the grouting pipe; the grouting pipe is connected to the outside of the tunnel segment, and a bypass mechanism is provided on the side of the grouting pump, and the bypass mechanism comprises a water pump, and the inlet end of the water pump is connected to the inlet end of the grouting pump through an inlet pipe, and the outlet end of the water pump is connected to the outlet end of the grouting pump through an outlet pipe.

[0006] Furthermore, a mortar recovery tank is provided at the inlet end of the grouting pump, and the end of the grouting pipe is connected to the mortar recovery tank through a recovery pipe, and a control valve 1 is provided on the top of the mortar recovery tank.

[0007] Furthermore, a control valve 2 is provided at the inlet end of the grouting pump, and the control valve 2 is arranged on the input pipe. A control valve 3 is provided on the inlet pipe, and a control valve 4 is provided on the outlet pipe. The control valve 3 is arranged close to the control valve 2, and the control valve 4 is arranged close to the grouting pipe.

[0008] Furthermore, a water storage tank is provided at the starting end of the input pipe through a water pipe, a control valve five is provided between the mortar storage tank and the input pipe end, a control valve six is ​​provided on the water pipe, and the control valve six is ​​arranged close to the control valve five.

[0009] Furthermore, a waste liquid recovery tank is provided on one side of the recovery pipe through a branch pipe, and a control valve seven is provided on the branch pipe, and the control valve seven is arranged close to the recovery pipe.

[0010] Furthermore, the mortar recovery tank and the mortar storage tank are both provided with a stirring device.

[0011] The advantages of the present invention over the prior art are as follows: (1) Compared with a synchronous grouting system which only includes a mortar storage tank, a grouting pipe and a slurry pump device, the present invention can recover the slurry in the grouting pipe when the shield machine is shut down, thereby preventing the slurry in the pipe from solidifying and clogging the grouting pipe; (2) The present invention can also recycle the recovered mortar to reduce the loss of slurry; (3) The entire system of the present invention is automated and integrated, and can automatically complete all work content when the shield machine is shut down without interfering with the normal operation of the shield machine; (4) The present invention achieves the purpose of recovering slurry by using a water pump to inject water, which is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a structural schematic diagram of a system for recovering grouting materials in a synchronous grouting pipe when a shield machine stops running.

[0013] As shown in the figure: 1. Stratum; 2. Mortar storage tank; 3. Water storage tank; 4. Shield; 5. Recovery pipe; 6. Tunnel segment; 7. Grouting pipe; 8. Grouting pump; 9. Waste liquid recovery tank; 10. Mortar recovery tank; 11. Water pump; 12. Input pipe; 13. Inlet pipe; 14. Outlet pipe; 15. Control valve one; 16. Control valve two; 17. Control valve three; 18. Control valve four; 19. Water pipe; 20. Control valve five; 21. Control valve six; 22. Branch pipe; 23. Control valve seven; 24. Control valve eight; 25. Control valve nine. DETAILED DESCRIPTION

[0014] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0015] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0016] A system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running, comprising a shield shell 4, a grouting pump 8, a grouting pipe 7, an input pipe 12, and a mortar storage tank 2, wherein the grouting pump 8 is arranged inside the shield machine, the shield shell 4 is the external shell of the shield machine, the inlet end of the grouting pump 8 is connected to the mortar storage tank 2 through the input pipe 12, and the outlet end of the grouting pump 8 is connected to the end of the shield shell 4 through the grouting pipe 7; the grouting pipe 7 is connected to the outside of the tunnel segment 6, and a bypass mechanism is provided on the side of the grouting pump 8, and the bypass mechanism comprises a water pump 11, the inlet end of the water pump 11 is connected to the inlet end of the grouting pump 8 through an inlet pipe 13, and the outlet end of the water pump 11 is connected to the outlet end of the grouting pump 8 through an outlet pipe 14.

[0017] The inlet end of the grouting pump 8 is provided with a mortar recovery tank 10, and the end of the grouting pipe 7 is also connected to the mortar recovery tank 10 through a recovery pipe 5. A control valve 15 is provided on the upper part of the mortar recovery tank 10; the inlet end of the grouting pump 8 is provided with a control valve 2 16, and the control valve 2 16 is arranged on the input pipe 12, the inlet pipe 13 is provided with a control valve 3 17, and the outlet pipe 14 is provided with a control valve 4 18, the control valve 3 17 is arranged close to the control valve 2 16, and the control valve 4 18 is arranged close to the grouting pipe 7; the input pipe 12 starts The end is also connected with a water storage tank 3 through a water pipe 19, the mortar storage tank 2 and the input pipe 12 end are provided with a control valve 5 20, the water pipe 19 is provided with a control valve 6 21, and the control valve 6 21 is arranged near the control valve 5 20; one side of the recovery pipe 5 is also connected with a waste liquid recovery tank 9 through a branch pipe 22, and the branch pipe 22 is provided with a control valve 7 23, and the control valve 7 23 is arranged near the recovery pipe 5; the end of the grouting pipe 7 is provided with a control valve 8 24; the recovery pipe 5 is provided with a control valve 9 25, which is arranged near the grouting pipe 7. The mortar recovery tank 10 and the mortar storage tank 2 are both provided with a stirring device;

[0018] Working principle: The system can recycle the slurry in the grouting pipe 7 when the shield machine suspends construction, avoiding the problem of slurry solidification inside the grouting pipe 7, and reducing the loss of slurry by recycling the slurry. The system can be automatically completed when the shield machine suspends construction, without adding extra workload and affecting normal construction operations.

[0019] The purpose of the present invention is to provide a system for automatically recovering mortar in the synchronous grouting pipe 7 when the shield machine stops running, according to the shortcomings of the above-mentioned prior art. The system can prevent the grouting pipe 7 from being blocked by adding a water injection system, a slurry circulation system, a recovery pipe 5 and a waste liquid recovery tank 9 on the basis of the original synchronous grouting system. When the shield machine is running, the grouting pump 8 extracts the slurry in the mortar storage tank 2 through the input pipe 12, and injects it into the outside of the tunnel segment 6 through the grouting pipe 7. When the shield machine stops, the control valve 8 24 is closed, the control valve 9 25 is opened, and the control valve 1 15 on the recovery pipe 5 is opened, and the mortar is discharged into the mortar recovery tank 10 for standby by injecting water into the grouting pipe 7; specifically, when the shield tunnel is constructed, the mortar storage tank 2 and the water storage tank 3 are respectively set on the ground surface. When the shield tunnel is constructed, the slurry in the mortar storage tank 2 sequentially passes through the underground mortar recovery tank 10, the grouting pump 8 and the grouting pipe 7 from the input pipe 12 to the tail of the shield shell 4 for synchronous grouting. When the shield machine is shut down, first turn off the grouting pump 8, turn on the water pump 11, open the control valve 15 on the recovery pipe 5, inject water from the water storage tank 3 into the grouting pipe 7, squeeze the slurry into the mortar recovery tank 10 through the recovery pipe 5, and continue to stir in the mortar recovery tank 10 to prevent the slurry from solidifying. After the slurry in the grouting pipe 7 is drained, close the control valve 15. At this time, there is no more slurry in the grouting pipe 7, thereby avoiding the problem of slurry solidifying in the grouting pipe 7 when construction is suspended.

[0020] When the shield machine needs to be restarted, first turn off the water pump 11, close the control valve three 17 and the control valve four 18, switch the water outlet tank back to the mortar storage tank 2, that is, close the control valve six 21, open the control valve five 20, then open the control valve two 16, start the grouting pump 8, open the branch pipe 22 and the control valve seven 23 to connect the recovery pipe 5 with the waste liquid recovery tank 9, re-inject slurry into the grouting pipe 7 to squeeze the water into the waste liquid recovery tank 9, and discharge the water in the grouting pipe 7 into the waste liquid recovery tank 9. After the drainage is completed, close the control valve seven 23 of the waste liquid recovery tank 9, close the control valve nine 25, open the control valve eight 24, and restart the synchronous grouting work to the outside of the tunnel segment 6. The slurry originally recovered in the mortar recovery tank 10 can be put into use again, avoiding the waste of slurry.

[0021] The present invention and its implementation methods are described above, and such description is not restrictive. The specific implementation methods are only part of the embodiments of the present invention, not all of the embodiments, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and implementation method similar to the technical solution without creativity, which should fall within the protection scope of the present invention.

Claims

1. A system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running, comprising a shield shell (4), a grouting pump (8), a grouting pipe (7), an input pipe (12), and a mortar storage tank (2), characterized in that: The grouting pump (8) is arranged inside the shield machine, and the shield shell (4) is the outer shell of the shield machine. The inlet end of the grouting pump (8) is connected to the mortar storage tank (2) through an inlet pipe (12), and the outlet end of the grouting pump (8) is connected to the end of the shield shell (4) through a grouting pipe (7); the grouting pipe (7) is connected to the outside of the tunnel segment (6), and a bypass mechanism is provided on the side of the grouting pump (8), and the bypass mechanism includes a water pump (11), the inlet end of the water pump (11) is connected to the inlet end of the grouting pump (8) through an inlet pipe (13), and the outlet end of the water pump (11) is connected to the outlet end of the grouting pump (8) through an outlet pipe (14). A mortar recovery tank (10) is provided at the inlet end of the grouting pump (8), and the end of the grouting pipe (7) is connected to the mortar recovery tank (10) via a recovery pipe (5). A control valve one (15) is provided on the upper part of the mortar recovery tank (10). One side of the recovery pipe (5) is also connected to a waste liquid recovery tank (9) via a branch pipe (22). A control valve seven (23) is provided on the branch pipe (22), and the control valve seven (23) is arranged close to the recovery pipe (5). A control valve eight (24) is provided at the end of the grouting pipe 7; a control valve nine (25) is provided at the end of the recovery pipe (5), and the control valve nine (25) is arranged close to the grouting pipe (7).

2. According to claim 1, a system for automatically recovering mortar in a synchronous grouting pipe when a shield machine stops running, characterized in that: The inlet end of the grouting pump (8) is provided with a second control valve (16), which is arranged on the input pipe (12), the inlet pipe (13) is provided with a third control valve (17), and the outlet pipe (14) is provided with a fourth control valve (18), the third control valve (17) is arranged close to the second control valve (16), and the fourth control valve (18) is arranged close to the grouting pipe (7).

3. The automatic mortar recovery system in the synchronous grouting pipe when the shield machine stops running according to claim 1 is characterized in that: The starting end of the input pipe (12) is also connected to a water storage tank (3) via a water delivery pipe (19); a control valve five (20) is provided between the mortar storage tank (2) and the end of the input pipe (12); a control valve six (21) is provided on the water delivery pipe (19); and the control valve six (21) is arranged close to the control valve five (20).

4. The automatic mortar recovery system in the synchronous grouting pipe when the shield machine stops running according to claim 1 is characterized in that: The mortar recovery tank (10) and the mortar storage tank (2) are both provided with stirring devices.

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