A double-liquid grouting system for shield machine

Abstract

The present invention relates to a double-liquid grouting system for a shield machine. The double-liquid grouting system for a shield machine comprises: a rear supporting trailer, which is used to be connected to the rear of the shield machine main machine; a liquid A mixing station, which is arranged on the rear supporting trailer and is used to prepare liquid A; a raw material storage bin, which is arranged on the rear supporting trailer and is used to supply raw materials to the liquid A mixing station; a water pipe, which is connected to the liquid A mixing station and is used to inject water into the liquid A mixing station; a liquid A pipeline, which is connected to the liquid A mixing station and is used to transport liquid A to the front of the shield machine; a liquid B storage tank, which is arranged on the rear supporting trailer and is used to store liquid B; a liquid B pipeline, which is connected to the liquid B storage tank and is used to transport liquid B to the front of the shield machine. Since the grouting systems are all arranged on the rear supporting trailer, the slurry produced by the liquid A mixing station can be directly transported to the liquid A pipeline, and the prepared slurry can be used as needed, which shortens the transportation process of the slurry, avoids long-distance transportation, reduces slurry loss, and reduces grouting costs.

Description

Technical Field

[0001] The invention relates to a double-liquid grouting system for a shield machine and belongs to the field of shield construction. Background Art

[0002] During the excavation process of the shield machine, there will be a certain construction gap between the pipe segments and the soil. If these construction gaps are not filled in time, it will easily cause surface subsidence, landslides and other problems. Therefore, grouting is needed to reinforce the soil around the pipe segments and maintain the stability of the soil around the pipe segments.

[0003] At present, grouting methods are mainly divided into single-liquid grouting and double-liquid grouting. The slurry of single-liquid grouting takes a long time to solidify, the slurry is easy to lose, easy to precipitate and precipitate water, and has poor stability; while the slurry of double-liquid grouting has a short coagulation time, and the slurry has high strength after solidification, which can greatly reduce the disturbance and settlement of the formation. Therefore, double-liquid grouting is increasingly widely used in shield construction. Among them, the two liquids are liquid A and liquid B, liquid A is generally slurry, and liquid B is generally water glass.

[0004] At present, the basic process of double-liquid grouting is as follows: first, the mixing station on the ground mixes the slurry raw materials to make slurry, and then the prepared slurry is transported to the slurry transport vehicle at the tunnel entrance through a pipeline. The slurry transport vehicle transfers the slurry to the slurry storage tank behind the shield machine. Finally, the grouting pump pumps the corresponding slurry in the slurry storage tank into the building gap between the pipe segment and the excavated soil, and fills and reinforces the soil around the pipe segment through the slurry being fully mixed and solidified. As the length of the tunnel excavation increases, the distance between the mixing station and the shield machine will become farther and farther. During the grouting process, the slurry needs to be transported over long distances, and the slurry needs to be continuously stirred during transportation to prevent it from settling and segregating. This not only leads to the loss and waste of slurry during transportation, but also has low slurry transportation efficiency and high energy consumption, which increases the grouting cost. Summary of the invention

[0005] The purpose of the present invention is to provide a double-liquid grouting system for a shield machine, so as to solve the technical problems of low slurry transportation efficiency and high energy consumption in the double-liquid grouting process in the prior art.

[0006] To achieve the above purpose, the technical solution of the double-liquid grouting system of the shield machine of the present invention is:

[0007] The shield machine double-liquid grouting system comprises a rear supporting trailer for connecting to the rear of the shield machine main body, on which a liquid A mixing station, a liquid B storage tank and a raw material storage bin are arranged; the liquid A mixing station is used to prepare liquid A, and the liquid A mixing station is connected with a water pipe for injecting water into the liquid A mixing station and a liquid A pipeline for transporting liquid A to the front of the shield machine; the liquid B storage tank is used to store liquid B, and the liquid B storage tank is connected with a liquid B pipeline for transporting liquid B to the front of the shield machine; the raw material storage bin is used to supply raw materials to the liquid A mixing station; the liquid A storage tank is connected in parallel to the liquid A pipeline; at least two liquid A mixing stations are arranged; the operating conditions of the grouting system are divided into three situations according to actual conditions: (1) the slurrying of the first mixing station is completed, the slurrying of the second mixing station is not completed, and grouting is in progress; when the slurrying of the first mixing station is completed, the first mixing station performs grouting, and when After the slurry in the first mixing station is used up, if the slurry in the second mixing station is prepared, the second mixing station will carry out grouting; if the slurry in the second mixing station has not been completed after the slurry in the first mixing station is used up, the A liquid storage tank will carry out grouting; (2) The mixing at the first mixing station is completed, but the mixing at the second mixing station is not completed, and the grouting is stopped; the slurry in the first mixing station is transported to the A liquid storage tank for storage. When the slurry in the A liquid storage tank reaches the upper limit, the first mixing station stops transporting the slurry to the A liquid storage tank and the next round of slurrying is suspended; (3) The mixing at the first mixing station is not completed, and the mixing at the second mixing station is not completed, and grouting is carried out; the A liquid storage tank directly carries out grouting. During the grouting process of the A liquid storage tank, if the slurry in the first or second mixing station is prepared, the grouting is switched to the first or second mixing station.

[0008] The beneficial effects are as follows: the grouting system of the present invention is arranged on the rear supporting trailer, so that the slurry produced by the A liquid mixing station can be directly transported to the A liquid pipeline, and the slurry can be taken and used at any time, shortening the slurry transportation process, avoiding long-distance transportation, reducing slurry loss, and reducing grouting costs. Moreover, slurrying in the tunnel also avoids environmental pollution; the A liquid storage tank is used to store spare slurry. When slurrying at the A liquid mixing station, the A liquid is transported to the front of the shield machine through the A liquid storage tank to ensure uninterrupted construction; since the space on the rear supporting trailer is relatively small, the size of the A liquid mixing station 21 on the rear supporting trailer is relatively small, and at least two A liquid mixing stations are set up to ensure that the slurrying speed is greater than the grouting speed, thereby ensuring uninterrupted construction.

[0009] As a further improvement, the A liquid storage tank is a stirring tank.

[0010] The beneficial effect is that such a design can avoid the slurry from separating out.

[0011] As a further improvement, the A liquid storage tank is connected to the water pipe.

[0012] The beneficial effect is that the concentration of liquid A can be adjusted by such a design.

[0013] As a further improvement, all the A liquid mixing stations share the A liquid pipeline.

[0014] The beneficial effects are: simplifying the system and facilitating the control of each A liquid mixing station to deliver slurry to the front of the shield machine.

[0015] As a further improvement, it also includes a screw conveyor, and the raw material storage bin supplies raw materials to the A liquid mixing station through the screw conveyor.

[0016] The beneficial effect is that such a design realizes automatic feeding and reduces labor intensity.

[0017] As a further improvement, the B liquid storage tank is connected to the water pipe.

[0018] The beneficial effect is that such a design can adjust the concentration of liquid B.

[0019] As a further improvement, the liquid outlets of the A liquid mixing station and the B liquid storage tank are provided with filters.

[0020] The beneficial effect is that the filter prevents larger foreign matter from entering the pipeline.

[0021] As a further improvement, a weighing module is provided on the A liquid mixing station.

[0022] The beneficial effect is: the function of the weighing module is to weigh the weight of the raw materials and water added to the A liquid mixing station. When the weight of the slurry in the A liquid mixing station reaches the upper limit, the raw material storage bin and the water pipe stop adding raw materials and water to the A liquid mixing station 21. When the weight of the slurry in the A liquid mixing station reaches the lower limit, the A liquid mixing station stops outputting slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the double-liquid grouting system of the shield machine of the present invention;

[0024] In the figure: 10, the first valve; 11, the B liquid storage tank; 12, the liquid level sensor; 13, the first filter; 14, the second valve; 15, the first injection pump; 16, the raw material storage bin; 17, the second filter; 18, the screw conveyor; 19, the water pipe; 20, the first weighing module; 21, the A liquid mixing station; 22, the slurry detection module; 23, the flow meter; 24, the third valve; 25, the second weighing module; 26, the third filter; 27, the fourth valve; 28, the second injection pump; 29, the fifth valve; 30, the sixth valve; 31, the A liquid storage tank; 32, the seventh valve; 33, the mixing module; 34, the fourth filter; 35, the third weighing module; 36, the eighth valve; 37, the third injection pump; 38, the ninth valve; 39, the A liquid pipeline; 40, the B liquid pipeline. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms such as "first" and "second" and other relational terms that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. In addition, the terms "front", "back", "up", "down", "left" and "right" are based on the orientation and positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention, rather than indicating that the device or component referred to must have a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0028] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0029] Embodiment 1 of the double-liquid grouting system for a shield machine of the present invention:

[0030] like Figure 1 As shown, the double-liquid grouting system of the shield machine includes a rear supporting trailer (not shown), which is used to be connected to the rear of the shield machine main body; the rear supporting trailer is provided with an A liquid mixing station 21, a raw material storage bin 16, an A liquid storage tank 31 and a B liquid storage tank 11.

[0031] In this embodiment, the raw material storage bin 16 is used to supply raw materials in powder form to the liquid A mixing station 21. Preferably, a screw conveyor 18 is provided between the liquid A mixing station 21 and the raw material storage bin 16, and the raw material storage bin 16 conveys raw materials to the liquid A mixing station 21 through the screw conveyor 18, so as to realize automatic feeding and reduce labor intensity.

[0032] In this embodiment, a second filter 17 is provided at the discharge port of the raw material storage bin 16 to prevent a large volume of raw materials from entering the A liquid mixing station 21 .

[0033] In this embodiment, a first weighing module 20 is provided on the raw material storage bin 16. The first weighing module 20 is used to weigh the weight of the raw materials in the raw material storage bin 16 in real time, and when the weight of the raw materials is lower than a set value, remind the staff to replenish the raw materials in time.

[0034] In this embodiment, since the space on the rear supporting trailer is relatively small, the size of the A liquid mixing station 21 on the rear supporting trailer is relatively small. Considering the slurry production volume of the A liquid mixing station 21 and the required grouting volume, two A liquid mixing stations 21 are set to ensure that the slurry production speed is greater than the grouting speed, thereby ensuring uninterrupted construction; two corresponding screw conveyors 18 are set, and the two A liquid mixing stations 21 share a raw material storage bin 16 and an A liquid pipeline. In other embodiments, the number of A liquid mixing stations can be set as needed.

[0035] In this embodiment, the two A liquid mixing stations 21 have the same structure and are arranged in parallel, and one of them is used as an example for explanation. The A liquid mixing station 21 is connected to a water pipe 19 and an A liquid pipeline 39, and the A liquid pipeline 39 is used to transport A liquid to the front of the shield machine; a third valve 24 is provided on the water pipe 19, and the third valve 24 is used to control whether the water pipe 19 injects water into the A liquid mixing station 21; water and raw materials are added to the A liquid mixing station 21 and fully stirred to produce A liquid, which is cement slurry. Among them, the water source of the water pipe can use the water source on the rear supporting trailer.

[0036] In this embodiment, a flow meter 23 is provided on the water pipe 19 upstream of the third valve 24 to monitor the water injection flow rate of the water pipe 19 to the A liquid mixing station.

[0037] In this embodiment, a slurry detection module 22 is provided on the A liquid mixing station 21. The function of the slurry detection module 22 is to detect the viscosity, specific gravity and other parameters of the stirred A liquid, and transmit the detection results to the control system to determine whether the slurry is usable.

[0038] In this embodiment, a second weighing module 25 is provided on the A liquid mixing station 21. The function of the second weighing module is to weigh the weight of the raw materials and water added to the A liquid mixing station 21 and transmit it to the control system. When the weight of the slurry in the A liquid mixing station 21 reaches the upper limit, the raw material storage bin 16 and the water pipe 19 stop adding raw materials and water to the A liquid mixing station 21. When the weight of the slurry in the A liquid mixing station 21 reaches the lower limit, the fourth valve 27 is closed, and the A liquid mixing station 21 stops outputting slurry.

[0039] In this embodiment, a third filter 26 is installed at the liquid outlet of the A liquid mixing station 21. The function of the third filter 26 is to prevent large foreign matter from entering the A liquid pipeline 39. The A liquid pipeline 39 is provided with a second injection pump 28 and a fifth valve 29.

[0040] In this embodiment, the A liquid pipeline 39 is connected in parallel with the A liquid storage tank 31 through a spare pipeline, a sixth valve 30 is provided on the spare pipeline upstream of the A liquid storage tank 31, and an eighth valve 36, a third injection pump 37 and a ninth valve 38 are provided on the spare pipeline downstream of the A liquid storage tank 31. Among them, the third injection pump 37 is located between the eighth valve 36 and the ninth valve 38, and can protect the third injection pump 37 when the third injection pump 37 is not working.

[0041] In this embodiment, a stirring module 33 is provided on the A liquid storage tank 31, that is, the A liquid storage tank 31 is a stirring tank to prevent the slurry from precipitating. In this embodiment, the A liquid storage tank 31 is connected to the water pipe 19, and the water pipe 19 is provided with a seventh valve 32, which is used to control whether to inject water into the A liquid storage tank 31 to adjust the concentration of the slurry.

[0042] In this embodiment, the liquid outlet of the A liquid storage tank 31 is provided with a fourth filter 34, and the fourth filter 34 is used to prevent foreign objects with a large volume from entering the A liquid pipeline 39. In this embodiment, the A liquid storage tank 31 is provided with a third weighing module 35, and the function of the third weighing module 35 is to weigh the A liquid input into the A liquid storage tank 31 and transmit it to the control system. When the weight of the slurry in the A liquid storage tank 31 reaches the upper limit, the A liquid mixing station 21 stops inputting slurry into the A liquid storage tank 31. When the weight of the slurry in the A liquid storage tank 31 reaches the lower limit, the eighth valve 36 is closed, and the A liquid storage tank 31 stops outputting slurry.

[0043] In this embodiment, the B liquid storage tank 11 stores the B liquid, which is water glass. The B liquid storage tank 11 is connected to a water pipe 19, on which a first valve 10 is provided, and the first valve 10 is used to control whether to inject water into the B liquid storage tank 11 to adjust the concentration of the water glass. The B liquid storage tank 11 is connected to a B liquid pipeline 40, on which a second valve 14 and a first injection pump 15 are provided.

[0044] In this embodiment, a first filter 13 is provided at the liquid outlet of the B liquid storage tank 11 . The function of the first filter 13 is to prevent foreign matter of a larger volume from entering the B liquid pipeline 40 .

[0045] In this embodiment, a liquid level sensor 12 is provided on the B liquid storage tank 11. When the liquid level is lower than the lower limit, the staff is reminded to replenish the B liquid in time. When the liquid level is higher than the upper limit, the replenishment of the B liquid into the B liquid storage tank 11 is stopped.

[0046] In this embodiment, considering that the amount of liquid B is small and does not need to be stirred, only one liquid B storage tank 11 is used to store the liquid B.

[0047] In this embodiment, the two A liquid mixing stations 21 are respectively the first mixing station and the second mixing station. The grouting operation conditions can be divided into three conditions according to the actual situation:

[0048] (1) The slurry preparation at the first mixing station is completed, but the slurry preparation at the second mixing station is not completed, and grouting is in progress. When the slurry preparation at the first mixing station is completed, the fifth valve 29 and the fourth valve 27 of the first mixing station are opened, and the liquid A in the first mixing station is transported to the front of the shield machine through the second injection pump 28. When the slurry in the first mixing station is used up, the fourth valve 27 of the first mixing station is closed. If the slurry preparation in the second mixing station is completed at this time, the fourth valve 27 of the second mixing station is opened, and the liquid A in the second mixing station is transported to the front of the shield machine through the second injection pump 28. If the slurry preparation in the second mixing station is not completed after the slurry in the first mixing station is used up, the second injection pump 28 and the fifth valve 29 are closed, and the eighth valve 36, the ninth valve 38 and the third injection pump 37 are opened to transport the stored slurry in the liquid A storage tank 31 to the front of the shield machine.

[0049] When the A liquid in the first mixing station is used up, the raw material storage bin 16 starts to transfer the raw materials to the first mixing station. When the weight of the raw materials in the first mixing station reaches the design value, the screw conveyor 18 is closed and the raw materials are stopped from being transported to the first mixing station. The third valve 24 injects water into the first mixing station, and the flow meter 23 records the amount of water injected into the first mixing station. When the amount of water reaches the design value, the third valve 24 is closed and the injection of water into the first mixing station is stopped. At the same time, when the weight measured by the second weighing module 25 reaches the upper limit of the set value, the third valve 24 and the screw conveyor 18 must be closed. After the raw materials and water are injected, the next round of mixing and slurrying begins.

[0050] (2) The mixing of the first mixing station is completed, the mixing of the second mixing station is not completed, and the grouting is stopped. At this time, the fifth valve 29 is closed, the sixth valve 30 is opened, and the slurry in the first mixing station is transported to the A liquid storage tank 31 for storage. The third weighing module 35 is used to weigh whether the weight of the A liquid in the A liquid storage tank 31 reaches the design upper limit. If it reaches the design upper limit, the sixth valve 30, the second injection pump 28 and the fourth valve 27 are all closed, the first mixing station stops transporting the slurry to the A liquid storage tank 31, and the next round of slurrying is suspended. If the slurry in the first mixing tank is fully transported to the A liquid storage tank 31, and the liquid level in the A liquid storage tank 31 has not reached the design upper limit, the sixth valve 30, the second injection pump 28 and the fourth valve 27 are all closed, and the first mixing station starts the next round of slurrying.

[0051] (3) The mixing of the first mixing station is not completed, the mixing of the second mixing station is not completed, and the grouting is still in progress. Then the eighth valve 36, the ninth valve 38 and the third injection pump 37 are opened to transport the stored slurry in the A liquid storage tank 31 to the front of the shield machine. During the slurry transportation process in the A liquid storage tank 31, if the slurry preparation of the first mixing station or the second mixing station is completed, the eighth valve 36, the ninth valve 38 and the third injection pump 37 are closed, and the A liquid storage tank 31 stops transporting slurry to the front of the shield machine, and switches to the first mixing station or the second mixing station to transport slurry to the front of the shield machine.

[0052] The grouting system of the present invention is arranged on the rear supporting trailer, so that the slurry produced by the A liquid mixing station can be directly transported to the A liquid pipeline, the slurry making speed and the slurry ratio can be quickly adjusted according to the working conditions, and the slurry can be used as needed, shortening the slurry transportation process, avoiding long-distance transportation, reducing slurry loss, and reducing grouting costs. Moreover, slurry making in the tunnel also meets environmental protection requirements.

[0053] Embodiment 2 of the double-liquid grouting system for a shield machine of the present invention:

[0054] The difference between this embodiment and embodiment 1 is that in embodiment 1, a liquid A storage tank 31 is connected in parallel to the liquid A pipeline 39, and the liquid A storage tank 31 is used to store spare slurry. When the liquid A mixing station 21 is slurrying, the liquid A is transported to the front of the shield machine through the liquid A storage tank 31. In this embodiment, no liquid A storage tank is provided, but more liquid A mixing stations are provided to ensure that the slurrying amount is greater than the grouting amount.

[0055] Embodiment 3 of the double-liquid grouting system for a shield machine of the present invention:

[0056] The difference between this embodiment and embodiment 1 is that in embodiment 1, the liquid A storage tank 31 is a stirring tank to prevent slurry precipitation. In this embodiment, the liquid A storage tank is a vibration tank to prevent slurry precipitation. In other embodiments, the liquid A storage tank can be a rotary tank, and a quick connector is provided on the rotary tank to facilitate connection with the pipeline.

[0057] Embodiment 4 of the double-liquid grouting system for a shield machine of the present invention:

[0058] The difference between this embodiment and embodiment 1 is that in embodiment 1, two A liquid mixing stations 21 share the A liquid pipeline 39. In this embodiment, based on the fact that two A liquid mixing stations are set up, two A liquid pipelines are set up, and the A liquid pipelines correspond to the A liquid mixing stations one by one, and the ends of the two A liquid pipelines merge with the end of the B liquid pipeline.

[0059] Embodiment 5 of the double-liquid grouting system for a shield machine of the present invention:

[0060] The difference between this embodiment and embodiment 1 is that in embodiment 1, the raw material storage bin 16 supplies raw materials to the liquid A mixing station 21 via a screw conveyor 18. In this embodiment, the raw materials in the raw material storage bin are manually delivered to the liquid A mixing station. In other embodiments, the raw materials may also be transported by a belt conveyor.

[0061] Embodiment 6 of the double-liquid grouting system for a shield machine of the present invention:

[0062] The difference between this embodiment and embodiment 1 is that in embodiment 1, a filter is provided at the liquid outlet of the A liquid mixing station 21. In this embodiment, the filter is provided at the feed inlet of the A liquid mixing station.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. The shield machine double liquid grouting system is characterized by: The invention comprises a rear supporting trailer connected to the rear of the shield machine main body, on which a liquid A mixing station, a liquid B storage tank and a raw material storage bin are arranged; the liquid A mixing station is used to prepare liquid A, and the liquid A mixing station is connected with a water pipe for injecting water into the liquid A mixing station and a liquid A pipeline for transporting liquid A to the front of the shield machine; the liquid B storage tank is used to store liquid B, and the liquid B storage tank is connected with a liquid B pipeline for transporting liquid B to the front of the shield machine; the raw material storage bin is used to supply raw materials to the liquid A mixing station; the liquid A storage tank is connected in parallel to the liquid A pipeline; there are two liquid A mixing stations, which are the first mixing station and the second mixing station respectively; the operating conditions of the grouting system are divided into three situations according to the actual situation: (1) the slurrying of the first mixing station is completed, the slurrying of the second mixing station is not completed, and the grouting is in progress; when the slurrying of the first mixing station is completed, the first mixing station is carrying out the grouting work (1) When the slurry in the first mixing station is used up, if the slurry in the second mixing station is prepared, the second mixing station will carry out grouting; if the slurry in the second mixing station has not been prepared after the slurry in the first mixing station is used up, the A liquid storage tank will carry out grouting; (2) The mixing at the first mixing station is completed, but the mixing at the second mixing station is not completed, and the grouting is stopped; the slurry in the first mixing station is transported to the A liquid storage tank for storage. When the slurry in the A liquid storage tank reaches the upper limit, the first mixing station stops transporting the slurry to the A liquid storage tank and the next round of slurrying is suspended; (3) The mixing at the first mixing station is not completed, and the mixing at the second mixing station is not completed, and grouting is carried out; the A liquid storage tank directly carries out grouting. During the grouting process of the A liquid storage tank, if the slurry in the first or second mixing station is prepared, the grouting is switched to the first mixing station or the second mixing station for grouting.

2. The shield machine double-liquid grouting system according to claim 1, characterized in that: The A liquid storage tank is a stirring tank.

3. The shield machine double-liquid grouting system according to claim 1 or 2, characterized in that: The A liquid storage tank is connected to the water pipe.

4. The shield machine double-liquid grouting system according to claim 1, characterized in that: All the A liquid mixing stations share the A liquid pipeline.

5. The shield machine double-liquid grouting system according to claim 1 or 2, characterized in that: It also includes a screw conveyor, through which the raw material storage bin supplies raw materials to the A liquid mixing station.

6. The shield machine double-liquid grouting system according to claim 1 or 2, characterized in that: The B liquid storage tank is connected to the water pipe.

7. The shield machine double-liquid grouting system according to claim 1 or 2, characterized in that: The liquid outlets of the A liquid mixing station and the B liquid storage tank are provided with filters.

8. The shield machine double-liquid grouting system according to claim 1 or 2, characterized in that: The A liquid mixing station is provided with a weighing module.

Images