System and method for preparing synchronous grouting material by using shield muck

Abstract

The invention discloses a system for preparing a synchronous grouting material by utilizing shield muck, and relates to the technical field of shield muck recycling. The system for preparing the synchronous grouting material by utilizing the shield muck comprises a stirring bin, a plurality of material bins and a plurality of additive bins, wherein the material bins and the additive bins are connected with the stirring bin through pipelines; different types of raw materials are stored in the material bins respectively, different types of additives are stored in the additive bins respectively, and the material bins and the additive bins convey the raw materials and the additives into the stirring bin through pipelines; an electric stirring assembly is arranged in the stirring bin, raw materials and additives are stirred and mixed through the electric stirring assembly to form a grouting material, and the grouting material is discharged from one side of the bottom of the stirring bin. Shield muck resources can be efficiently utilized, and environmental pollution is reduced; in addition, the whole preparation process is automatically controlled by the system, the prepared synchronous grouting material has good engineering performance, and the grouting requirement of underground engineering can be met.

Description

Technical Field

[0001] The invention relates to the technical field of shield slag resource utilization, and in particular to a system and method for preparing synchronous grouting materials by utilizing shield slag. Background Art

[0002] Shield construction is a widely used technology in underground engineering construction such as subways and tunnels. However, a large amount of slag is generated during the shield construction process, which is usually regarded as waste. With the acceleration of urbanization and the continuous expansion of underground engineering, the amount of shield slag is also increasing. These large amounts of accumulated shield slag not only cause serious environmental pollution problems, but also waste precious land resources and bring great pressure to the social and ecological environment.

[0003] At present, the treatment of shield slag mainly relies on traditional landfill, filling or using it as building materials. However, these methods have many problems and cannot meet the needs of modern society for environmental protection and efficient use of resources: Land resource occupation issues: Landfill is one of the most common ways to deal with shield waste. However, landfill requires a lot of land resources, especially in urban areas where land resources are scarce, which makes this method particularly uneconomical. In addition, the choice of landfill sites is strictly limited. Once the site is not properly selected, it may cause geological disasters or secondary damage to the surrounding environment.

[0004] Environmental pollution risks: Shield slag contains a certain amount of chemical substances (such as heavy metal ions, organic matter, etc.). If it is directly landfilled or piled up, it may seep into groundwater or soil, causing water and soil pollution, and thus threatening the ecosystem and human health. In addition, slag piled in the open air may also generate dust or mud due to wind and rain, further aggravating the pollution of air and water sources.

[0005] Unstable engineering quality: The physical and chemical properties of shield waste are significantly different from those of traditional fill or construction materials. For example, the particle size distribution of shield waste particles is wide and has strong agglomeration, which makes it prone to uniformity and stability problems when used directly as fill or construction materials. These problems may lead to a decline in project quality and even cause safety hazards.

[0006] Resource waste problem: Shield slag is essentially composed of natural materials such as soil, rock, sand and gravel, and can become a valuable resource after proper treatment. However, traditional treatment methods often ignore this point and fail to fully tap the potential value of shield slag, resulting in a huge waste of resources. Summary of the invention

[0007] In order to solve the above problems, the present invention proposes a system and method for preparing synchronous grouting materials using shield slag, aiming to transform shield slag into high-quality grouting materials that can be used in foundation reinforcement, waterproof layer treatment and other fields through a scientific and reasonable process flow. This method can not only effectively reduce the pollution of shield slag to the environment, but also improve the utilization rate of resources, providing a new solution for the green construction of underground projects.

[0008] The technical solution adopted by the present invention is: A system for preparing synchronous grouting materials using shield slag, the system comprising a mixing bin, a plurality of material bins and a plurality of additive bins connected to the mixing bin by pipelines; the plurality of material bins respectively store raw materials of different categories, the plurality of additive bins respectively store additives of different categories, the material bins and the additive bins transport the raw materials and additives to the mixing bin via pipelines; an electric stirring assembly is provided in the mixing bin, the raw materials and additives are stirred and mixed by the electric stirring assembly to form grouting materials, and the grouting materials are discharged from one side of the bottom of the mixing bin.

[0009] Furthermore, the mixing bin is a mixing barrel with a hollow cylindrical structure, and a plurality of feed pipe joints are provided on the top and the outer wall around the top of the mixing barrel, and a slurry outlet pipe is provided on one side of the bottom, and the pipe joint and the slurry outlet pipe are connected to the inside of the mixing barrel.

[0010] Furthermore, the electric stirring assembly is divided into multiple groups, and each group of electric stirring assemblies includes a driving motor fixedly installed on the top of the mixing barrel, and an agitator located inside the mixing barrel and connected to the driving motor; the agitator includes a stirring rod rotatably installed in the mixing barrel, the top end of the stirring rod is fixedly connected to the driving motor, and a spiral stirring blade is installed on the stirring rod.

[0011] Furthermore, a vibrator is installed on the mixing barrel, and a vibrating motor of the vibrator is fixedly installed on the top outside the mixing barrel. A vibrating rod of the vibrator is located in the mixing barrel, and its top is connected to the vibrating motor.

[0012] Further, the material bin includes a first material bin, a second material bin, a third material bin, a fourth material bin, a fifth material bin and a sixth material bin; the additive bin includes a first additive bin and a second additive bin; a plurality of material bins are circumferentially arranged above the mixing bin, and a plurality of additives are installed on the top of the mixing bin; Each material bin and each additive bin is a hollow cylindrical structure, and a discharge pipe joint is provided at the center of the bottom and a feed pipe joint is provided at the center of the top. The discharge pipe joint of each material bin is connected to the mixing bin through a material transport pipe, and each additive bin is connected to the mixing bin through a discharge pipe joint.

[0013] Furthermore, a first spherical automatic switch valve is provided at the discharge pipe joint of each material bin and each additive bin; and a second spherical automatic switch valve is provided at the slurry discharge pipe of the mixing barrel.

[0014] Furthermore, the system for preparing synchronous grouting materials using shield slag also includes a PLC controller and a weighing unit; the mixing barrel is placed on the weighing unit, and the weighing unit is an electronic scale; the PLC controller is electrically connected to the weighing unit, the driving motor of the electric stirring assembly, the first spherical automatic switch valve and the second spherical automatic switch valve.

[0015] A method for preparing synchronous grouting material by using shield slag, the method is based on the above-mentioned system for preparing synchronous grouting material by using shield slag, and comprises the following steps: Step 1, the first material bin, the second material bin, the third material bin, the fourth material bin, the fifth material bin, and the sixth material bin are respectively packed with different raw materials, and shield slag, cement, fly ash, sand, water, and sodium-based bentonite are packed in sequence; the first additive bin and the second additive bin are respectively packed with different additives, and water reducer and flocculant are packed in sequence; Step 2: The material bins inject raw materials into the mixing bin in the order of the first to the sixth. During the injection process of each material bin, the weighing unit feeds back the signal to the PLC controller to control the ball-shaped automatic switch valve to ensure the correct injection percentage of each type of raw material; Step 3: After the raw material injection is completed, the PLC controller controls the additive bin to inject additives as needed according to the data fed back by the weighing unit; Step 4, the PLC controller controls the driving motors of the multiple electric stirring components to make the electric stirring components stir and mix the raw materials and additives to form grouting materials, and indirectly starts the vibrator to vibrate the grouting materials during the grouting process; Step 5: After the slurry mixing is completed, the PLC controller controls the ball switch valve at the slurry outlet pipe to open, and the grouting material in the mixing chamber is transported to the shield machine grouting pipe through the slurry outlet pipe.

[0016] Furthermore, the water reducing agent is a polycarboxylic acid water reducing agent with a water reducing efficiency of 20%-25%, and the flocculant is hydroxyethyl cellulose.

[0017] Furthermore, the ratio of the mass of water in the grouting material to the total mass of the cementitious material is 1.3:1; the weight percentage of each component in the raw materials to the total mass of the solid part is: cement 9.3%, fly ash 18.5%, sodium bentonite 2.3%, medium sand 27.8%, slag 41.7%, water reducer 0.3%, and flocculant 0.1%.

[0018] The beneficial effects of the present invention are: 1. Reduce environmental pollution: Avoid land, water and air pollution caused by landfill and stacking. Closed automatic system handles the slag and reduces the impact of dust and mud on the environment.

[0019] 2. Save land resources: reduce the demand for landfill sites, ease the shortage of urban land resources, improve land use efficiency, and convert waste soil into usable materials for engineering projects.

[0020] 3. Improve engineering quality: optimize the performance of grouting materials, ensure uniformity and stability, and meet engineering requirements such as foundation reinforcement and water-proof layer treatment. Solve the problem of wide particle size distribution and strong agglomeration of shield slag to improve construction quality.

[0021] 4. Improve resource utilization: realize efficient resource utilization of shield slag and promote the development of circular economy. Reduce the use of other raw materials, save resources and reduce production costs.

[0022] 5. High degree of automation and convenient operation: PLC controller is combined with weighing unit to accurately control material ratio and ensure the quality of grouting materials. Multiple groups of agitators and vibrators work together to improve production efficiency and reduce the complexity of manual operation.

[0023] 6. Broad application prospects: Synchronous grouting materials are suitable for a variety of engineering scenarios such as subways, tunnels, bridges, etc., especially in foundation reinforcement and waterproof layer treatment. It conforms to the concept of green construction and helps environmentally friendly engineering construction.

[0024] 7 Significant economic benefits: Reduce the cost of shield slag treatment, reduce landfill costs and transportation expenses. Create economic value, convert slag into building materials, and reduce dependence on purchased materials.

[0025] 8. Outstanding social benefits: Promote sustainable development, reduce resource waste and environmental pollution, and help build an ecological civilization. Fill in the technical gaps, promote technological progress in the industry, and provide innovative solutions for underground engineering construction.

[0026] In summary, the present invention prepares high-quality synchronous grouting materials by resource utilization of shield slag, which has significant advantages in environmental protection, resource conservation, and improvement of engineering quality, and has both economic and social benefits, and has broad application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the system of the present invention; Figure 2 It is a structural schematic diagram of the mixing bin of the present invention; Figure 3 This is a schematic diagram of the internal structure of the mixing bin of the present invention; Figure 4 It is a structural schematic diagram of the stirrer and the vibrating rod of the present invention; Figure 5 It is a structural schematic diagram of the material bin of the present invention; Figure 6 This is a schematic diagram of the structure of the additive bin of the present invention; In the figure, 1 is a mixing bin, 2 is a first material bin, 3 is a second material bin, 4 is a third material bin, 5 is a fourth material bin, 6 is a fifth material bin, 7 is a sixth material bin, 8 is a first additive bin, 9 is a second additive bin, 10 is a slurry mixing barrel, 11 is a first feed pipe joint, 12 is a slurry discharge pipe, 13 is a driving motor, 14 is an agitator, 15 is a stirring rod, 16 is a stirring blade, 17 is a vibrator, 18 is a vibrating rod, 19 is a vibrating motor, 20 is a discharge pipe joint, 21 is a second feed pipe joint, 22 is a material transport pipe, 23 is a first spherical automatic switch valve, 24 is a second spherical automatic switch valve, 25 is a weighing unit, and 26 is a PLC controller. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] This embodiment proposes a system for preparing synchronous grouting materials using shield slag, aiming to transform shield slag into high-quality grouting materials that can be used in fields such as foundation reinforcement and waterproof layer treatment through a scientific and reasonable process flow. This method can not only effectively reduce the pollution of shield slag to the environment, but also improve the utilization rate of resources, providing a new solution for the green construction of underground projects.

[0031] Specifically, Figure 1As shown, the system for preparing synchronous grouting materials using shield slag includes a mixing bin 1, and six material bins and two additive bins connected to the mixing bin 1 by pipeline. Among them, the material bins include a first material bin 2, a second material bin 3, a third material bin 4, a fourth material bin 5, a fifth material bin 6 and a sixth material bin 7, and the material bins store different types of raw materials respectively; the raw materials include shield slag, cement, fly ash, sand, water, and sodium-based bentonite. The additive bin includes a first additive bin 8 and a second additive bin 9, which store water reducers and flocculants respectively. The material bin and the additive bin transport the raw materials and additives to the mixing bin 1 through pipelines. The mixing bin 1 is used to mix and prepare grouting materials; an electric stirring assembly is provided in the mixing bin 1, which stirs and mixes the raw materials and additives through the electric stirring assembly to form grouting materials, and the grouting materials are discharged from one side of the bottom of the mixing bin 1.

[0032] like Figure 1 and Figure 2 As shown, the mixing chamber 1 in this embodiment is a mixing barrel 10 of a hollow cylindrical structure, and a plurality of first feed pipe joints 11 are provided on the top and the outer wall around the top of the mixing barrel 10, and a slurry outlet pipe 12 is provided on one side of the bottom thereof, and the pipe joints and the slurry outlet pipe 12 are connected to the inside of the mixing barrel 10. Figure 3 and Figure 4 As shown, the mixing bin 1 is a mixing barrel 10 with a hollow cylindrical structure, and the upper cover of the mixing barrel 10 is removable to facilitate replacement and cleaning of the internal structure; eight first feed pipe joints 11 are provided on the top and the outer wall around the top of the mixing barrel 10, and a slurry outlet pipe 12 is provided on one side of the bottom. The pipe joint and the slurry outlet pipe 12 are connected to the inside of the mixing barrel 10, and a second spherical automatic switch valve 24 is provided at the slurry outlet pipe 12 of the mixing barrel 10 to control the discharge of grouting material. There are three groups of electric stirring components, which are arranged in a circle at equal angles with the vertical center of the mixing barrel 10 as the axis; each group of electric stirring components includes a driving motor 13 fixedly mounted on the top of the mixing barrel 10, and an agitator 14 located inside the mixing barrel 10 and connected to the driving motor 13, and the driving motor 13 drives the agitator 14 to rotate; the agitator 14 includes a stirring rod 15 rotatably mounted in the mixing barrel 10 through a bearing, the top of the stirring rod 15 is fixedly connected to the driving motor 13, and a stirring blade 16 in the shape of a spiral line is installed on the stirring rod 15. In addition, a vibrator 17 is also installed on the mixing barrel 10, and a vibrating motor 19 of the vibrator 17 is fixedly mounted on the top of the mixing barrel 10, and a vibrating rod 18 of the vibrator 17 is located inside the mixing barrel 10, and the top of the vibrating rod 18 is connected to the vibrating motor 19, which is used to assist in vibration to improve the uniformity of the slurry. The mixing chamber 1 is responsible for mixing various raw materials and additives to prepare uniform grouting material. The agitator 14 and the vibrator 17 work together to ensure the uniformity and stability of the slurry.

[0033] like Figure 1 and Figure 5 As shown, the six material bins in this embodiment are arranged circumferentially above the mixing bin 1, and the first material bin 2, the second material bin 3, the third material bin 4, the fourth material bin 5, the fifth material bin 6 and the sixth material bin 7 are all hollow cylindrical structures, and a discharge pipe joint 20 is provided at the center of the bottom, and a second feed pipe joint 21 is provided at the center of the top. The discharge pipe joint 20 of each material bin is connected to the first feed pipe joint 11 on the outer wall of the top peripheral side of the mixing bin 1 through a material transport pipe 22, so that raw materials such as shield slag, cement, fly ash, sand, water, sodium-based bentonite, etc. can be transported to the mixing bin 1. In addition, considering the control problem, a first spherical automatic switch valve 23 is provided at the discharge pipe joint 20 of each material bin in this embodiment to provide the mixing bin 1 with proportioned raw materials as needed.

[0034] Similarly, if Figure 1 and Figure 6 As shown, in this embodiment, two additives are installed at the top of the mixing bin 1, the first additive bin 8 and the second additive bin 9 are both hollow cylindrical structures, and a discharge pipe joint 20 is provided at the center of the bottom, and a second feed pipe joint 21 is provided at the center of the top. The discharge pipe joint 20 of each additive bin is connected to the first feed pipe joint 11 at the top of the mixing bin 1, so that additives such as water reducer and flocculant can be transported to the mixing bin 1. In addition, considering the control problem, in this embodiment, a first spherical automatic switch valve 23 is provided at the discharge pipe joint 20 of each additive bin, and the water reducer and flocculant are added to the mixing bin 1 as needed.

[0035] Further, as a preferred technical solution of this embodiment, Figure 1 As shown, in this embodiment, the system for preparing synchronous grouting materials using shield slag also includes a PLC controller 26 and a weighing unit 25; the mixing barrel 10 is placed on the weighing unit 25, and the weighing unit 25 is an electronic scale; the PLC controller 26 is electrically connected to the weighing unit 25, the driving motor 13 of the electric stirring assembly, the first spherical automatic switch valve 23, and the second spherical automatic switch valve 24. Among them, the weighing unit 25 monitors the overall weight of the mixing bin 1 and the slurry therein in real time, and feeds back the data to the PLC controller 26 for controlling the amount of raw materials and additives added. The PLC controller 26 controls the opening and closing of each first spherical automatic switch valve 23 and the second spherical automatic switch valve 24 according to the data fed back by the weighing unit 25, and adjusts the amount of materials and additives added; at the same time, the PLC controller 26 controls the start and stop of the agitator 14 to ensure that the preparation process of the grouting material proceeds smoothly.

[0036] Based on the above-mentioned system for preparing synchronous grouting material using shield slag, this embodiment also proposes a method for preparing synchronous grouting material using shield slag, which includes the following steps: Step 1, the first material warehouse 2, the second material warehouse 3, the third material warehouse 4, the fourth material warehouse 5, the fifth material warehouse 6, and the sixth material warehouse 7 are respectively packed with different raw materials, and shield slag, cement, fly ash, sand, water, and sodium-based bentonite are packed in sequence; the first additive warehouse 8 and the second additive warehouse 9 are respectively packed with different additives, and water reducer and flocculant are packed in sequence.

[0037] Step 2, the material bins inject raw materials into the mixing bin 1 in the order of the first to the sixth. During the injection process of each material bin, the weighing unit 25 feeds back the signal to the PLC controller 26 to control the spherical automatic switch valve to ensure the correct injection percentage of each type of raw material.

[0038] Step 3: After the raw material injection is completed, the PLC controller 26 controls the additive bin to inject additives as needed according to the data fed back by the weighing unit 25.

[0039] Among them, the water reducing agent uses a polycarboxylate water reducing agent with a water reducing efficiency of 20%-25%, and the flocculant uses hydroxyethyl cellulose. The ratio of the mass of water in the grouting material to the total mass of the cementitious material is 1.3:1; the weight percentage of each component in the raw materials to the total mass of the solid part is: cement 9.3%, fly ash 18.5%, sodium bentonite 2.3%, medium sand 27.8%, slag 41.7%, water reducing agent 0.3%, flocculant 0.1%.

[0040] Step 4, the PLC controller 26 controls the driving motors 13 of the multiple electric stirring assemblies to enable the electric stirring assemblies to stir and mix the raw materials and additives to form grouting materials, and indirectly starts the vibrator 17 to vibrate the grouting materials during the mixing process.

[0041] Step 5, after the slurry mixing is completed, the PLC controller 26 controls the ball switch valve at the slurry outlet pipe 12 to open, and the grouting material in the mixing chamber 1 is transported to the shield machine grouting pipe through the slurry outlet pipe 12.

[0042] It should be noted that the electrical equipment mentioned in this embodiment, such as: drive motor, agitator, vibrator, spherical automatic switch valve, PLC controller, electronic scale, etc. are commercially available finished equipment and can be selected and purchased according to actual construction needs.

[0043] In summary, the system of preparing synchronous grouting materials from shield slag makes use of shield slag as a resource to prepare high-quality synchronous grouting materials. It has significant advantages in environmental protection, resource conservation, and improvement of engineering quality. It has both economic and social benefits and has broad application prospects and promotion value.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A system for preparing synchronous grouting materials using shield slag, characterized in that: The system for preparing synchronous grouting materials using shield slag includes a mixing bin, a plurality of material bins and a plurality of additive bins connected to the mixing bin by pipelines; the plurality of material bins respectively store raw materials of different categories, the plurality of additive bins respectively store additives of different categories, the material bins and the additive bins transport the raw materials and additives to the mixing bin via pipelines; an electric stirring assembly is provided in the mixing bin, which stirs and mixes the raw materials and additives by the electric stirring assembly to form grouting materials, and the grouting materials are discharged from one side of the bottom of the mixing bin.

2. The system for preparing synchronous grouting materials using shield slag according to claim 1 is characterized in that: The mixing bin is a mixing barrel with a hollow cylindrical structure. A plurality of feed pipe joints are arranged on the top and the outer wall around the top of the mixing barrel. A slurry outlet pipe is arranged on one side of the bottom. The pipe joint and the slurry outlet pipe are connected to the inside of the mixing barrel.

3. The system for preparing synchronous grouting material using shield slag according to claim 2 is characterized in that: The electric stirring components are divided into multiple groups, and each group of electric stirring components includes a driving motor fixedly installed on the top of the mixing barrel, and an agitator located inside the mixing barrel and connected to the driving motor; the agitator includes a stirring rod rotatably installed in the mixing barrel, the top end of the stirring rod is fixedly connected to the driving motor, and a spiral stirring blade is installed on the stirring rod.

4. The system for preparing synchronous grouting material using shield slag according to claim 2 is characterized in that: The mixing barrel is also provided with a vibrator, a vibrating motor of the vibrator is fixedly mounted on the top of the mixing barrel, a vibrating rod of the vibrator is located in the mixing barrel, and a top of the vibrating rod is connected to the vibrating motor.

5. The system for preparing synchronous grouting material using shield slag according to claim 3 is characterized in that: The material bins include a first material bin, a second material bin, a third material bin, a fourth material bin, a fifth material bin and a sixth material bin; the additive bins include a first additive bin and a second additive bin; a plurality of material bins are circumferentially arranged above the mixing bin, and a plurality of additives are installed on the top of the mixing bin; Each material bin and each additive bin is a hollow cylindrical structure, and a discharge pipe joint is provided at the center of the bottom and a feed pipe joint is provided at the center of the top. The discharge pipe joint of each material bin is connected to the mixing bin through a material transport pipe, and each additive bin is connected to the mixing bin through a discharge pipe joint.

6. The system for preparing synchronous grouting material using shield slag according to claim 5 is characterized in that: A first spherical automatic switch valve is provided at the discharge pipe joint of each material bin and each additive bin; a second spherical automatic switch valve is provided at the slurry discharge pipe of the slurry mixing barrel.

7. The system for preparing synchronous grouting material using shield slag according to claim 6 is characterized in that: The system for preparing synchronous grouting materials using shield slag also includes a PLC controller and a weighing unit; the slurry mixing bucket is placed on the weighing unit, and the weighing unit is an electronic scale; the PLC controller is electrically connected to the weighing unit, the driving motor of the electric stirring assembly, the first spherical automatic switch valve and the second spherical automatic switch valve.

8. A method for preparing synchronous grouting material using shield slag, the method is based on the system for preparing synchronous grouting material using shield slag according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1, the first material bin, the second material bin, the third material bin, the fourth material bin, the fifth material bin, and the sixth material bin are respectively packed with different raw materials, and shield slag, cement, fly ash, sand, water, and sodium-based bentonite are packed in sequence; the first additive bin and the second additive bin are respectively packed with different additives, and water reducer and flocculant are packed in sequence; Step 2: The material bins inject raw materials into the mixing bin in the order of the first to the sixth. During the injection process of each material bin, the weighing unit feeds back the signal to the PLC controller to control the ball-shaped automatic switch valve to ensure the correct injection percentage of each type of raw material; Step 3: After the raw material injection is completed, the PLC controller controls the additive bin to inject additives as needed according to the data fed back by the weighing unit; Step 4, the PLC controller controls the driving motors of the multiple electric stirring components to make the electric stirring components stir and mix the raw materials and additives to form grouting materials, and indirectly starts the vibrator to vibrate the grouting materials during the grouting process; Step 5: After the slurry mixing is completed, the PLC controller controls the ball switch valve at the slurry outlet pipe to open, and the grouting material in the mixing chamber is transported to the shield machine grouting pipe through the slurry outlet pipe.

9. The method for preparing synchronous grouting material using shield slag according to claim 8, characterized in that: The water reducing agent is a polycarboxylate water reducing agent with a water reducing efficiency of 20%-25%, and the flocculant is hydroxyethyl cellulose.

10. The method for preparing synchronous grouting material using shield slag according to claim 8, characterized in that: The ratio of the mass of water in the grouting material to the total mass of the cementitious material is 1.3:1; the weight percentage of each component in the raw materials to the total mass of the solid part is: cement 9.3%, fly ash 18.5%, sodium bentonite 2.3%, medium sand 27.8%, slag 41.7%, water reducer 0.3%, and flocculant 0.1%.

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