Grouting system of tunnel boring machine

Abstract

The invention discloses a grouting system of a tunnel boring machine. The grouting system comprises a grouting pump, a grouting pipeline and a supporting pipeline. The grouting pipeline comprises a grouting main pipe, a plurality of grout distribution connectors and a plurality of grouting branch pipes, the grouting main pipe is connected with the grouting branch pipes through the grout distribution connectors, grout control electromagnetic valves are arranged in the grout distribution connectors, the grouting main pipe comprises a grout inlet end and a grout outlet end, and the grout inlet end is connected with the grout outlet end. And the slurry inlet end of the grouting main pipe is connected to the grouting pump. Through the arrangement of the structure, during use, the grouting pipeline is provided with the grouting main pipe, the multiple flow dividing connectors and the multiple grouting branch pipes, so that the connecting mode between the pipelines is clear, the problems of winding and the like can be avoided, and when a grouting system goes wrong, the grouting system can be prevented from being damaged; and maintenance and troubleshooting can be carried out more easily. Besides, due to the fact that the electromagnetic valve is arranged, the grouting process can be automatically controlled, and manual control over grouting is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of grouting systems, and particularly to a grouting system for a tunnel boring machine. Background Art

[0002] The grouting system of a tunnel boring machine is a crucial part during tunnel construction. It is mainly used to fill the gaps between the tunnel wall and the surrounding rock and soil masses during tunnel boring, performing various functions such as strengthening the formation, preventing water seepage, and controlling surface settlement. In recent years, with the acceleration of China's urbanization process, the supporting construction of municipal infrastructure projects has also advanced by leaps and bounds. In municipal infrastructure projects, the underground pipeline project, as the "lifeline project" of production and life, its construction quality is directly related to the safety and reliability of the project. In the work of laying municipal pipelines, a jacking device is usually used to form a pipeline laying channel, and then the supporting pipeline is set in the pipeline laying channel. Then, the gap between the pipeline and the pipeline laying channel is filled through the grouting system to ensure the stability of the pipeline structure and the project quality. At the same time, during the pipe jacking construction process, bentonite slurry is injected into the gap between the pipe jacking and the surrounding soil through the grouting system, which can also reduce the friction between the pipe wall and the soil during the pipe jacking process, greatly reducing the thrust required for jacking. This not only makes the pipe jacking construction easier to carry out, but also effectively prevents the soil from collapsing due to excessive friction, further ensuring the construction safety and project quality.

[0003] However, in the existing grouting system, the pipeline is complex, and multiple grouting pipes are required to correspond to each grouting channel respectively. During use, problems such as entanglement are likely to occur between the pipes.

[0004] Therefore, the present invention provides a grouting pipeline for a tunnel boring machine, which has a simple structure and can avoid problems such as entanglement. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a grouting system for a tunnel boring machine, which has a simple structure and can avoid problems such as entanglement.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0007] The present invention discloses a grouting system for a tunnel boring machine, including: a grouting pump, a grouting pipeline, and a supporting pipeline; the grouting pipeline includes a grouting main pipe, a plurality of slurry distribution connectors, and a plurality of grouting branch pipes. The grouting main pipe is connected to the grouting branch pipes through the slurry distribution connectors. A slurry control solenoid valve is provided in the slurry distribution connectors. The grouting main pipe includes a slurry inlet end and a slurry outlet end, and the slurry inlet end of the grouting main pipe is connected to the grouting pump; the grouting pipeline is arranged inside the supporting pipeline, and the supporting pipeline is provided with a grouting port, and the grouting branch pipes communicate with the grouting port.

[0008] As an improvement of the present invention, it further includes a stirring container and a reflux pipeline. The reflux pipeline includes a reflux input end and a reflux output end. The reflux input end is connected to the slurry output end of the grouting main pipe, and the reflux output end is connected to the stirring container.

[0009] As an improvement of the present invention, it further includes a water pump, a water distribution connector and a cleaning water pipe. The cleaning water pipe is connected to the grouting branch pipe through the water distribution connector. A water control solenoid valve is provided in the water distribution connector, and one end of the cleaning water pipe is connected to the water pump.

[0010] As an improvement of the present invention, the grouting branch pipe is an annular grouting pipe.

[0011] As an improvement of the present invention, the slurry distribution connector includes a slurry inlet connector and a slurry outlet connector. The grouting main pipe is connected to the grouting branch pipe through the slurry inlet connector, and the grouting branch pipe communicates with the grouting port through the slurry outlet connector.

[0012] As an improvement of the present invention, the grouting branch pipe is provided with a grouting inlet and a grouting outlet. The grouting inlet communicates with the grouting main pipe through the slurry inlet connector and the slurry outlet connector.

[0013] As an improvement of the present invention, the grouting branch pipe is provided with a water injection port, and the water injection port communicates with the cleaning water pipe through the water distribution connector.

[0014] As an improvement of the present invention, the grouting port communicates with the grouting outlet through the slurry outlet connector.

[0015] As an improvement of the present invention, the slurry control solenoid valve is an electromagnetic ball valve.

[0016] As an improvement of the present invention, the water control solenoid valve is an electromagnetic ball valve.

[0017] The beneficial effects of the present invention are as follows: Through the above structural settings, during use, the grouting pipeline is provided with the grouting main pipe, several slurry distribution connectors and several grouting branch pipes, making the connection method between the pipelines clear and obvious, which can not only avoid problems such as entanglement, but also make it easier to maintain and troubleshoot when problems occur in the grouting system. Moreover, because the solenoid valve is provided, the grouting process can be automatically controlled without manual control of grouting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. The accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings. In addition, the drawings are not drawn to a scale of 1:1, and the relative sizes of the various elements are only schematically drawn in the drawings and not necessarily drawn according to the actual scale.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the grouting system of the tunnel boring machine of the present invention;

[0021] Figure 2 It is a schematic sectional view of the grouting system of the tunnel boring machine of the present invention;

[0022] Figure 3 It is an exploded view of the grouting system of the tunnel boring machine of the present invention;

[0023] Figure 4 is Figure 3 An enlarged schematic view of area A;

[0024] Figure 5 It is an exploded view of a part of the grouting system of the tunnel boring machine of the present invention from the first perspective;

[0025] Figure 6 It is an exploded view of a part of the grouting system of the tunnel boring machine of the present invention from the second perspective.

[0026] Explanation of the reference numerals:

[0027] 100, grouting pump; 200, grouting pipeline; 300, mixing container; 400, return pipeline; 500, water pump; 600, water distribution connector; 700, cleaning water pipe; 800, support pipeline; 210, main grouting pipe; 211, slurry inlet end; 212, slurry outlet end; 220, slurry distribution connector; 221, slurry control solenoid valve; 222, slurry inlet connector; 223, slurry outlet connector; 230, branch grouting pipe; 231, grouting inlet; 232, grouting outlet; 233, water injection port; 410, return input end; 420, return output end; 610, water control solenoid valve; 810, grouting port. Detailed implementation manners

[0028] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These 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 specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0030] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0031] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "join", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] In this application, unless otherwise clearly stipulated and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0034] Referring to Figures 1 to 6 , a grouting system for a tunnel boring machine, comprising: a grouting pump 100, a grouting pipeline 200 and a support pipeline 800; the grouting pipeline 200 includes a grouting main pipe 210, a plurality of slurry distribution connectors 220 and a plurality of grouting branch pipes 230, the grouting main pipe 210 is connected to the grouting branch pipes 230 through the slurry distribution connectors 220, a slurry control solenoid valve 221 is provided in the slurry distribution connectors 220, the grouting main pipe 210 includes a slurry inlet end 211 and a slurry outlet end 212, and the slurry inlet end 211 of the grouting main pipe 210 is connected to the grouting pump 100; the grouting pipeline 200 is disposed in the support pipeline 800, and the support pipeline 800 is provided with a grouting port 810, and the grouting branch pipes 230 communicate with the grouting port 810.

[0035] With the above structure set up, during use, by setting the grouting main pipe 210, several slurry distribution connectors 220, and several grouting branch pipes 230, the grouting pipeline 200 can avoid problems such as entanglement. Moreover, because the slurry control solenoid valve 221 is provided, the grouting process can be automatically controlled without manual control of grouting. Since each slurry control solenoid valve 221 is independently controlled, the on-off of one or more of the grouting branch pipes 230 can be arbitrarily controlled according to requirements, thereby controlling the flow direction of the slurry. The grouting pump 100 extracts grouting materials (such as bentonite slurry, etc.) from the storage container by mechanical, hydraulic, or pneumatic means, etc., and conveys them to the grouting pipeline 200 at a set pressure. The main function of the grouting main pipe 210 is to guide the slurry conveyed from the grouting pump 100 to the slurry distribution connector 220. Due to the relatively large outlet pressure of the grouting pump 100, the grouting main pipe 210 needs to have sufficient strength to withstand the pressure of the slurry, and at the same time, its inner wall should be as smooth as possible to reduce the resistance of the slurry during transportation. The slurry distribution connector 220 plays a role in distributing the slurry, and the slurry control solenoid valve 221 provided in its internal structure can control the flow of the slurry to the grouting branch pipes 230. The grouting branch pipes 230 convey the diverted slurry to the specific parts of the tunnel boring machine that need grouting. These parts may be the strata around the tunnel wall, the gaps between the segments and the strata, etc. The number and layout of the grouting branch pipes 230 are usually determined according to the design of the tunnel boring machine and the actual grouting requirements to ensure that the slurry can be evenly filled into the target area. During the tunnel boring process, the surrounding strata will be disturbed, resulting in a decrease in the stability of the strata. By injecting the slurry into the strata through the grouting system, the voids in the strata can be filled, and the density and strength of the strata can be improved. For example, in soft soil strata, grouting can bond loose sand or silty soil particles together to form a relatively stable structure, effectively preventing the strata from collapsing and providing a safe working environment for tunnel boring. When the tunnel passes through an aquiferous stratum, the influx of groundwater will bring great difficulties to the boring work. The grouting system can inject a waterproof slurry into the strata or the gaps between the segments and the strata to form a water-stop curtain to prevent groundwater from entering the tunnel interior. For example, in some water-rich sandy pebble strata, injecting chemical slurry can effectively block the channels of groundwater after the slurry solidifies, reduce the seepage volume in the tunnel, and ensure the smooth progress of tunnel construction. For a tunnel constructed by the shield method, after the segment assembly is completed, there may be certain gaps between the segments and the strata. The grouting system can inject the slurry into these gaps to make the segments closely fit with the strata, evenly transmit the strata pressure, and improve the stability of the segments. At the same time, filling the gaps also helps to reduce the deformation and settlement of the segments and ensure the forming quality of the tunnel.In addition, during the pipe jacking construction process, bentonite slurry is injected into the gap between the pipe jacking and the surrounding soil through the grouting system, which can also reduce the friction between the pipe wall and the soil during the pipe jacking process, greatly reducing the thrust required for jacking. This not only makes the pipe jacking construction easier to carry out, but also effectively prevents the soil from collapsing due to excessive friction, further ensuring the construction safety and project quality.

[0036] In this embodiment, a mixing container 300 and a return pipeline 400 are further included. The return pipeline 400 includes a return input end 410 and a return output end 420. The return input end 410 is connected to the slurry outlet end 212 of the grouting main pipe 210, and the return output end 420 is connected to the mixing container 300. Through the setting of the above structure, during use, the setting of the return pipeline 400 enables the slurry flowing out from the slurry outlet end 212 of the grouting main pipe 210 to return to the mixing container 300 through the return output end 420. During the grouting process, situations such as the grouting volume exceeding the demand or the need to adjust the composition of the grouting material may occur. Through this return method, the unused grouting slurry can be recycled, avoiding waste of the slurry. When it is necessary to pause the grouting, the slurry can flow back to the mixing container 300 through the return pipeline 400, enabling the slurry to circulate between the grouting pipeline 200 and the return pipeline 400, and preventing the slurry from solidifying due to the stop of flow. After the grouting work is completed, cleaning liquid can also be injected into the grouting main pipe 210, and the cleaning liquid will carry the remaining material in the grouting main pipe 210 and return to the mixing container 300 through the return pipeline 400. This can not only clean the grouting main pipe 210, but also clean the return pipeline 400, facilitating the maintenance of the entire system.

[0037] In this embodiment, it further includes a water pump 500, a water distribution connector 600, and a cleaning water pipe 700. The cleaning water pipe 700 is connected to the grouting branch pipe 230 through the water distribution connector 600. A water control solenoid valve 610 is provided in the water distribution connector 600. One end of the cleaning water pipe 700 is connected to the water pump 500. Through the above structural arrangement, during use, clean water can be injected into the grouting branch pipe 230 through the water pump 500, the water distribution connector 600, and the cleaning water pipe 700, so as to clean the residual slurry in the grouting branch pipe 230, prevent the residual slurry from solidifying in the grouting branch pipe 230, and extend the service life of the grouting branch pipe 230. The water control solenoid valve 610 provided in the water distribution connector 600 can accurately control whether clean water flows into the grouting branch pipe 230. When cleaning work is required, by controlling the water control solenoid valve 610 to open, clean water can flow to the grouting branch pipe 230; while in the normal grouting stage or when cleaning is not required, the water control solenoid valve 610 is closed to prevent water from entering and avoid interfering with the grouting work, ensuring the normal switching and orderly operation of the system functions.

[0038] In this embodiment, the grouting branch pipe 230 is an annular grouting pipe. Through the above structural arrangement, during use, since the cross-section of the tunnel is usually circular, the shape of the annular grouting pipe matches the tunnel structure. This matching structural design can better fit the tunnel wall, enabling the slurry to be more accurately injected into the voids behind the tunnel wall.

[0039] In this embodiment, the slurry distribution connector 220 includes a slurry inlet connector 222 and a slurry outlet connector 223. The grouting main pipe 210 is connected to the grouting branch pipe 230 through the slurry inlet connector 222, and the grouting branch pipe 230 communicates with the grouting port 810 through the slurry outlet connector 223. Through the above structural arrangement, during use, the overall function of the slurry distribution connector 220 (including the slurry inlet connector 222 and the slurry outlet connector 223) is to integrate the grouting main pipe 210, the grouting branch pipe 230, and the grouting port 810 into a complete grouting system. These three components cooperate with each other, enabling the slurry to be accurately injected into the target position (from the slurry outlet connector 223 to the grouting port 810) after passing through reasonable distribution (from the slurry inlet connector 222 to the grouting branch pipe 230) from the source (from the grouting equipment to the grouting main pipe 210). This collaborative working method can improve the efficiency and accuracy of grouting. For example, in the reinforcement grouting of underground projects, the slurry can be accurately injected into the pores or fractures of the formation to be reinforced, thereby effectively improving the strength and stability of the formation.

[0040] In this embodiment, the grouting branch pipe 230 is provided with a grouting inlet 231 and a grouting outlet 232, and the grouting inlet 231 is connected to the grouting main pipe 210 through the slurry inlet connector 222 and the slurry outlet connector 223. With the above structural arrangement, during use, this clear connection method enables easier maintenance and fault troubleshooting when problems occur in the grouting system. If a certain grouting branch pipe 230 becomes blocked or the grouting effect is not good, the pipeline section from the grouting inlet 231 to the grouting outlet 232 can be checked first. By checking whether the connection between the slurry outlet connector 223 and the grouting inlet 231 is tight and whether the internal channel is unobstructed, etc., the problem location can be quickly located, improving the reliability and maintainability of the entire grouting system and further enhancing the user experience.

[0041] In this embodiment, the grouting branch pipe 230 is provided with a water injection port 233, and the water injection port 233 is connected to the cleaning water pipe 700 through the water distribution connector 600. With the above structural arrangement, during use, after the local grouting work is completed, some of the grouting branch pipes 230 need to be cleaned to prevent the remaining grouting material from solidifying and accumulating in the pipeline, which may affect the quality of the next grouting and the service life of the pipeline. The setting of the water injection port 233 provides an inlet for the cleaning water to enter the grouting branch pipe 230. By connecting the cleaning water pipe 700 to the water injection port 233 through the water distribution connector 600, when cleaning is required, the cleaning water can enter the grouting branch pipe 230 from the water pump 500 through the cleaning water pipe 700, the water distribution connector 600, and the water injection port 233. By utilizing the fluidity and scouring force of water, the grouting material remaining in the pipeline can be washed away. By specifically connecting the cleaning water pipe 700 to the water injection port 233 of the grouting branch pipe 230, the grouting branch pipe 230 can be cleaned targeted without affecting other parts that do not need to be cleaned (such as the grouting main pipe 210). The water control solenoid valve 610 in the water distribution connector 600 can precisely control whether the cleaning water enters the water injection port 233, thereby achieving precise control of the cleaning process.

[0042] In this embodiment, the grouting port 810 communicates with the grouting outlet 232 through the slurry outlet connector 223. With the above structure, during use, the design of the grouting port 810 and the slurry outlet connector 223 enables the grouting pipeline 200 to be better integrated with the support pipeline 800. This connection method can adapt to the characteristics such as the sizes and materials of different types of the grouting pipeline 200 and the support pipeline 800. For example, when replacing the grouting pipeline 200 or the support pipeline 800 with different specifications, as long as the interface design of the slurry outlet connector 223 is reasonable, it is easy to achieve compatible connection between the new pipelines, ensuring the normal operation of the grouting system.

[0043] In this embodiment, the slurry control solenoid valve 221 is an electromagnetic ball valve. With the above structure, during use, the electromagnetic ball valve adopts spherical sealing, and the sealing contact area between the sphere and the valve seat is relatively small, and a relatively large sealing specific pressure can be formed when closed, thus effectively preventing medium leakage. In contrast, for some other solenoid valves, such as electromagnetic butterfly valves, although their sealing performance is also good, the sealing of the butterfly valve mainly relies on the rubber sealing ring or metal sealing pair between the butterfly plate and the valve body. During long-term use or under harsh working conditions, the sealing ring may age and wear, thus affecting the sealing effect; while the spherical sealing structure of the electromagnetic ball valve is relatively more stable and reliable, and can maintain good sealing performance for a long time.

[0044] In this embodiment, the water control solenoid valve 610 is an electromagnetic ball valve. With the above structure, during use, during the rotation of the sphere of the electromagnetic ball valve, the friction force between the sphere and the valve seat is small, and the moment of inertia of the sphere is relatively small. Therefore, the operating torque is not large, and the required electromagnetic force is also relatively small, and the opening and closing actions can be achieved quickly and easily. For some solenoid valves such as electromagnetic diaphragm valves, their diaphragm and other components are prone to fatigue and damage during long-term frequent actions and need to be replaced regularly. In contrast, the electromagnetic ball valve has lower maintenance costs and longer service life.

[0045] As described above are one or more embodiments provided in combination with specific contents, and it is not determined that the specific implementation of the present invention is only limited to these descriptions. Any method, structure, etc. similar or identical to the present invention, or several technical deductions or replacements made on the premise of the concept of the present invention, should be regarded as the protection scope of the present invention.

Claims

1. A grouting system for a tunnel boring machine, characterized in that Including: A grouting pump (100), a grouting pipeline (200) and a support pipeline (800); the grouting pipeline (200) includes a grouting main pipe (210), a plurality of slurry distribution connectors (220) and a plurality of grouting branch pipes (230), the grouting main pipe (210) is connected to the grouting branch pipe (230) through the slurry distribution connector (220), a slurry control solenoid valve (221) is provided in the slurry distribution connector (220), the grouting main pipe (210) includes a slurry inlet end (211) and a slurry outlet end (212), and the slurry inlet end (211) of the grouting main pipe (210) is connected to the grouting pump (100); the grouting pipeline (200) is arranged in the support pipeline (800), and the support pipeline (800) is provided with a grouting port (810), and the grouting branch pipe (230) communicates with the grouting port (810).

2. The grouting system of the tunnel boring machine according to claim 1, characterized in that, It further includes a mixing container (300) and a reflux pipeline (400), the reflux pipeline (400) includes a reflux input end (410) and a reflux output end (420), the reflux input end (410) is connected to the slurry outlet end (212) of the grouting main pipe (210), and the reflux output end (420) is connected to the mixing container (300).

3. The grouting system of the tunnel boring machine according to claim 1, characterized in that, It further includes a water pump (500), a water distribution connector (600) and a cleaning water pipe (700), the cleaning water pipe (700) is connected to the grouting branch pipe (230) through the water distribution connector (600), a water control solenoid valve (610) is provided in the water distribution connector (600), and one end of the cleaning water pipe (700) is connected to the water pump (500).

4. The grouting system of the tunnel boring machine according to claim 3, characterized in that, The grouting branch pipe (230) is an annular grouting pipe.

5. The grouting system of the tunnel boring machine according to claim 4, wherein, The slurry distribution connector (220) includes a slurry inlet connector (222) and a slurry outlet connector (223), the grouting main pipe (210) is connected to the grouting branch pipe (230) through the slurry inlet connector (222), and the grouting branch pipe (230) communicates with the grouting port (810) through the slurry outlet connector (223).

6. The grouting system of the tunnel boring machine according to claim 5, characterized in that, The grouting branch pipe (230) is provided with a grouting inlet (231) and a grouting outlet (232), and the grouting inlet (231) communicates with the grouting main pipe (210) through the slurry inlet connector (222) and the slurry outlet connector (223).

7. The grouting system of the tunnel boring machine according to claim 5, characterized in that, The grouting branch pipe (230) is provided with a water injection port (233), and the water injection port (233) communicates with the cleaning water pipe (700) through the water distribution connector (600).

8. The grouting system of the tunnel boring machine according to claim 6, characterized in that, The grouting port (810) communicates with the grouting outlet (232) through the slurry outlet connector (223).

9. The grouting system of the tunnel boring machine according to claim 1, characterized in that, The slurry control solenoid valve (221) is an electromagnetic ball valve.

10. The grouting system of the tunnel boring machine according to claim 3, characterized in that, The water control solenoid valve (610) is an electromagnetic ball valve.

Images