Method and device for transporting cement paste of shield tunneling machine through pipeline

Abstract

The invention relates to a method and a device for transporting cement paste of a shield tunneling machine through a pipeline, and belongs to the field of urban underground engineering construction. According to the technical scheme, the method comprises the following steps that S01, cement paste is mixed in a ground mixing workshop, the mixed cement paste is conveyed into a transfer tank, and a stirring mechanism of the transfer tank is started; s02, after the cement slurry in the transfer tank exceeds 1 / 3, a transfer pump is started to convey the cement slurry into the shield tunneling machine; s03, after the slurry in the mortar tank of the shield tunneling machine exceeds 1 / 4, adding the liquid B for stirring and mixing, and starting to propel the shield tunneling machine and injecting the double-liquid slurry; s04, after the cement slurry required by each ring is conveyed and before the cement slurry of the next ring is conveyed, the pipeline is cleaned, through the pipeline, transport vehicles in the tunnel can be reduced, potential traffic safety hazards are reduced, meanwhile, the flow of the slurry transported by the pipeline is higher than that of the slurry transported by a tank car, the transport efficiency is improved, water does not need to be added to moisten the pipe in the whole slurry transport process, and the cement slurry proportion is guaranteed from the source; and the pipelines are cleaned in each shift, so that the cement consolidation phenomenon is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of urban underground engineering construction, and in particular to a method and a device for transporting cement slurry of a shield machine through a pipeline. Background Art

[0002] With the rapid development of shield machine manufacturing technology, more and more shield construction projects such as railways, highways, municipal engineering, and pipeline corridors are being constructed using the shield method. However, the traditional shield synchronous single-liquid grouting technology in shield construction has not been effectively improved due to a series of problems such as long mortar consolidation time, easy dilution under water-rich strata, volume shrinkage after consolidation leading to segment floating, surface subsidence, and tunnel leakage. In particular, the single-liquid grouting method is not sufficient to meet the construction requirements for engineering projects with high settlement requirements and complex surface environment. Therefore, double-liquid slurry (cement slurry + water glass) with high early strength, short setting time, and good filling properties is more commonly used in tunnels constructed by the shield method.

[0003] The use of double-liquid grouting can effectively control the floating of the segments, control the quality of the formed tunnel segments, and improve the forming effect of the tunnel. At the same time, it can improve the settlement control accuracy of the surface and surrounding structures, and has significant social and economic benefits.

[0004] However, since the cement slurry in the dual-liquid slurry of the shield machine's simultaneous grouting consumes a large amount during the construction process, the conventional use of multiple mixing trucks for transportation will result in low transportation efficiency, high equipment costs, significant impact on the quality of the cement slurry, high traffic pressure in the tunnel, and greater safety hazards and environmental pollution. The above problems are particularly obvious in shield tunnels constructed over long distances. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a method and device for transporting shield machine cement slurry through a pipeline that is easy to transport and clean, thereby solving the problems in the prior art of low transportation efficiency, high equipment cost, significant impact on cement slurry quality, high traffic pressure in the tunnel, significant safety hazards and environmental pollution.

[0006] The technical solution adopted by the present invention is as follows: First, A method for transporting cement slurry of a shield machine through a pipeline, comprising the following steps: S01. The ground mixing workshop mixes cement slurry, and the mixed cement slurry is transported to the transfer tank, and the stirring mechanism of the transfer tank is started; S02. When the cement slurry in the transfer tank exceeds 1 / 3, start the transfer pump to transport cement slurry into the shield machine; S03, when the slurry in the shield machine mortar tank exceeds 1 / 4, the shield machine starts to advance and inject double liquid slurry; S04. After the cement slurry required for each ring is transported, the pipeline is cleaned before the next ring of cement slurry is transported. The set pipeline can reduce the number of transport vehicles in the tunnel, effectively reducing traffic safety hazards. At the same time, the slurry flow rate of pipeline transportation is higher than that of tank truck transportation, which greatly improves the transportation efficiency. There is no need to add water to the pipe during the slurry transportation process, which ensures the cement slurry ratio from the source, and the pipeline is cleaned every shift to reduce cement solidification.

[0007] Preferably, step S01 includes the following steps: S0101. According to the established ratio, the bentonite slurry making unit first prepares and reserves the bentonite slurry. When the cement slurry making unit mixes and stirs the components of the cement slurry at high speed, the prepared bentonite slurry is first mixed, then the clean water is mixed, then the stabilizer is mixed, and finally the cement powder is added through the screw conveyor; S0102. The prepared cement slurry is stored in 2.4m³ mixing tanks. Each set of cement slurry mixing tank uses a 40m³ / h transfer hose pump for transportation. There are 2 sets of cement slurry transportation units in total, with a transfer and transportation capacity of 80m³ / h. S0103. Start the mixing mechanism in the transfer tank and notify the ground mixing station to start slurrying. When there is 1 / 3 cement slurry in the transfer tank, start the transfer pump to slurry into the shield machine.

[0008] Preferably, step S04 includes the following steps: S0401-1. Stop the transfer pump, close the slurry inlet and outlet ball valves, and prepare for pressure relief; S0402-1. Open the pressure relief ball valve to relieve the pressure in the pipeline; S0403-1. Use a wrench to remove the ball outlet cover of the ball outlet mechanism, put the cleaning ball into the pipeline, and use a tool to push the cleaning ball to the front end of the ball valve at the slurry outlet; S0404-1. Reinstall the ball outlet cover and close the pressure relief ball valve; S0405-1. Start the transfer pump to start delivering slurry. While delivering slurry, push the cleaning ball forward to clean the pipeline; S0406-1. After the transfer pump runs for one minute, turn off the transfer pump, repeat steps S0401-1 and S0402-1, open the ball opening end cover, check whether the cleaning ball has entered the pipeline, and at the same time, judge whether the cleaning ball has entered the pipeline according to the slurry flow rate of the pipeline. If the cleaning ball has not entered the pipeline, put the cleaning ball deeper into the pipeline and repeat S0404-1 and S0405-1; S0407-1. Observe the slurry flow rate, pressure gauge and flow meter data in the mortar tank. If the flow rate increases and the pressure decreases, it means that the cleaning ball has hit the ball receiving mechanism. The pipeline is not disassembled during the use stage, and the slurry is directly pumped into the mortar tank; S0408-1. Disassemble the ball receiving mechanism and take out the cleaning ball; S0409-1. Assemble the ball catching mechanism.

[0009] Preferably, step S04 includes the following steps: S0401-2. Use a wrench to remove the end cover of the ball release port of the serving mechanism, put several cleaning balls one by one into the fixed plate with holes of the serving mechanism, and replace the end cover of the ball release port; S0402-2. When the pipeline needs to be cleaned with a cleaning ball, stop the transfer pump, close the slurry inlet and outlet ball valves, and prepare to release the pressure; S0403-2. Open the pressure relief valve at the cement slurry tank of the shield machine to relieve the pressure in the pipeline, or open the pressure relief valve at the ball end pipeline to relieve the pressure; S0404-2. Rotate the ball-serving mechanism wheel to push the fixed plate, so that the cleaning ball falls into the slurry pipe through the thickened pipe, and use the counter to determine whether the cleaning ball has fallen into place; S0405-2. Open the slurry inlet and outlet ball valves, start the transfer pump, start conveying the slurry, and push the cleaning ball forward while conveying the slurry to clean the slurry pipeline; S0406-2. Observe the flow rate and pressure gauge data. If the flow rate decreases and the pressure increases, it means that the cleaning ball has been driven into the slurry pipeline. The slurry pipeline should not be disassembled during the use stage, and the slurry should be directly driven into the mortar tank; S0407-2. Observe the flow and pressure gauge data. If the flow increases and the pressure decreases, it means that the cleaning ball has been hit into the ball receiving mechanism. The pipeline should not be disassembled during use, and the slurry should be directly pumped into the mortar tank.

[0010] Preferably, the cleaning ball is a rubber ball, and the outer wall of the rubber ball can abut against the inner wall of the pipeline.

[0011] In the second aspect, a device for transporting cement slurry for shield machines via pipelines is provided, which is used to implement the methods S0401-1 to S0409-1 mentioned in the first aspect, and includes a transfer tank, a stirring mechanism is provided in the transfer tank, a transfer pump is connected to the transfer tank discharge port, the transfer pump is connected to a pipeline, the other end of the pipeline is used to connect to the shield machine, and a ball serving mechanism and a ball receiving mechanism are provided on the pipeline.

[0012] Preferably, two ends of the ball-serving mechanism are respectively connected to the pipeline and the transfer pump, and the ball-serving mechanism includes a detachable ball-releasing port end cover.

[0013] Preferably, the ball receiving mechanism includes a slurry pipe and a ball receiving pipe, both ends of the slurry pipe are connected to the pipeline, one end of the ball receiving pipe is connected to the middle section of the slurry pipe, and the other end is a detachable seal, the ball receiving pipe is located below the slurry pipe, and an arc-shaped guide plate is also provided in the slurry pipe, and the arc-shaped guide plate is used to guide the cleaning ball into the ball receiving pipe.

[0014] Preferably, the ball receiving pipeline also includes a pressure relief ball valve.

[0015] In the third aspect, a device for transporting cement slurry for shield machines via pipelines is provided, which is used to implement methods S0401-2 to S0407-2 mentioned in the first aspect, and includes a transfer tank, a stirring mechanism is provided in the transfer tank, a transfer pump is connected to the discharge port of the transfer tank, the transfer pump is connected to the pipeline, the other end of the pipeline is used to connect to the shield machine, a ball serving mechanism and a ball receiving mechanism are provided on the pipeline, the ball serving mechanism includes a roulette wheel, the roulette wheel is connected to a fixed plate with holes, each hole on the fixed plate can hold a cleaning ball, and the ball receiving pipeline can accommodate a plurality of cleaning balls.

[0016] It can be seen from the above technical solutions that the advantages of the present invention are: through the set pipeline, the number of transport vehicles in the tunnel can be reduced, effectively reducing traffic safety hazards. At the same time, the slurry flow rate of pipeline transportation is higher than that of tank truck transportation, which greatly improves the transportation efficiency. The slurry transportation does not require water to moisten the pipe during the whole process, which ensures the cement slurry ratio from the source, and the pipeline is cleaned every shift to reduce cement solidification. Through the set ball-serving mechanism and ball-receiving mechanism, the cleaning of the inside of the pipeline can be completed without disassembling the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of steps S0401-1 and S0402-1 in Examples 1 and 2 of the specific implementation of the present invention.

[0019] Figure 2 It is a schematic diagram of step S0403-1 in Examples 1 and 2 of the specific implementation of the present invention.

[0020] Figure 3 It is a schematic diagram of step S0404-1 in Examples 1 and 2 of the specific implementation of the present invention.

[0021] Figure 4 It is a schematic diagram of step S0405-1 in Examples 1 and 2 of the specific implementation manner of the present invention.

[0022] Figure 5 It is a schematic diagram of step S0408-1 in Examples 1 and 2 of the specific implementation of the present invention.

[0023] Figure 6 It is a schematic diagram of step S0409-1 in Examples 1 and 2 of the specific implementation of the present invention.

[0024] Figure 7 It is a schematic diagram of Examples 3 and 4 of the specific implementation methods of the present invention.

[0025] Figure 8 It is a partial structural schematic diagram of the fixing plate in Examples 3 and 4 of the specific implementation manner of the present invention.

[0026] In the figure: 1. transfer tank; 2. stirring mechanism; 3. transfer pump; 4. slurry inlet ball valve; 5. slurry outlet ball valve; 6. pressure relief ball valve; 7. ball launching mechanism; 8. ball outlet end cover; 9. cleaning ball; 10. ball receiving mechanism; 11. pipeline; 12. slurry pipeline; 13. ball receiving pipeline; 14. guide plate; 15. wheel; 16. counter; 17. fixing plate; 18. thickened pipeline. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0028] Embodiment 1: like Figure 1-Figure 6 As shown, a method for transporting cement slurry of a shield machine through a pipeline comprises the following steps: S01, the ground mixing workshop mixes cement slurry, the mixed cement slurry is transported to the transfer tank 1, and the stirring mechanism 2 of the transfer tank 1 is started; S0101. According to the established ratio, the bentonite slurry making unit first prepares and reserves the bentonite slurry. When the cement slurry making unit mixes and stirs the components of the cement slurry at high speed, the prepared bentonite slurry is first mixed, then the clean water is mixed, then the stabilizer is mixed, and finally the cement powder is added through the screw conveyor; S0102. The prepared cement slurry is stored in 2.4m³ mixing tanks. Each set of cement slurry mixing tank uses a 40m³ / h transfer hose pump for transportation. There are 2 sets of cement slurry transportation units in total, with a transfer and transportation capacity of 80m³ / h. S0103, start the mixing mechanism 2 in the transfer tank 1, notify the ground mixing station to start slurrying, and when there is 1 / 3 cement slurry in the transfer tank 1, start the transfer pump 3 to slurry into the shield machine; S02, when the cement slurry in the transfer tank 1 exceeds 1 / 3, start the transfer pump 3 to transport the cement slurry into the shield machine; S03, when the slurry in the shield machine mortar tank exceeds 1 / 4, the shield machine starts to advance and inject double liquid slurry; S04. After the cement slurry required for each ring is transported, the pipeline 11 is cleaned before the next ring of cement slurry is transported.

[0029] In this way, the number of transport vehicles in the tunnel can be reduced through the pipeline 11, which effectively reduces the potential traffic safety hazards. At the same time, the flow rate of slurry transported by the pipeline 11 is higher than that of tank trucks, which greatly improves the transportation efficiency. No water is needed to moisten the pipe during the whole slurry transportation process, which ensures the cement slurry ratio from the source. In addition, the pipeline 11 is cleaned every shift to reduce cement solidification. S0401-1, stop the transfer pump 3, close the slurry inlet ball valve 4 and the slurry outlet ball valve 5, and prepare for pressure relief; S0402-1. Open the pressure relief ball valve 6 to relieve the pressure in the pipeline 11; S0403-1. Use a wrench to dismantle the ball outlet cover 8 of the ball outlet mechanism 7, put the cleaning ball 9 into the pipeline 11, and use a tool to push the cleaning ball 9 to the front end of the slurry outlet ball valve 5; S0404-1. Reinstall the ball outlet cover 8 and close the pressure relief ball valve 6; S0405-1, start the transfer pump 3 to start conveying slurry, and at the same time push the cleaning ball 9 forward to clean the pipeline 11; S0406-1, after the transfer pump 3 runs for one minute, turn off the transfer pump 3, repeat steps S0401-1, S0402-1, open the ball opening end cover 8, check whether the cleaning ball 9 has entered the pipeline 11, and at the same time, according to the slurry flow rate of the shield machine mortar tank pipeline 11, it can also be judged whether the cleaning ball 9 has entered the pipeline 11. If the cleaning ball 9 has not entered the pipeline 11, put the cleaning ball 9 deeper into the pipeline 11, and repeat S0404-1, S0405-1; S0407-1. Observe the slurry flow rate in the mortar tank, the pressure gauge of the pipeline 11, and the flow meter data. If the flow rate increases and the pressure decreases, it means that the cleaning ball 9 has been hit into the ball receiving mechanism 10. The pipeline 11 is not disassembled during the use stage, and the slurry is directly driven into the mortar tank; S0408-1, disassemble the ball receiving mechanism 10 and take out the cleaning ball 9; S0409-1. Assemble the ball catching mechanism 10.

[0030] With such arrangement, the inside of the pipeline 11 can be cleaned without disassembling the pipeline 11 through the provided ball serving mechanism 7 and the ball receiving mechanism 10 .

[0031] In this embodiment, a DN100 galvanized pipeline is laid from the transfer tank 1 to the shield machine section tunnel.

[0032] In this embodiment, a rubber ball is used as the cleaning ball 9 , and the outer wall of the rubber ball can abut against the inner wall of the pipe 11 .

[0033] Embodiment 2: like Figure 7 As shown, a method for transporting cement slurry of a shield machine through a pipeline is different from the first embodiment in that step S04 includes the following steps: S0401-2. Use a wrench to dismantle the ball release port end cover 8 of the ball launch mechanism 7, place a plurality of cleaning balls 9 one by one into the perforated fixing plate 17 of the ball launch mechanism 7, and reinstall the ball release port end cover 8; S0402-2. When the pipeline 11 needs to be cleaned with the cleaning ball 9, the transfer pump 3 is stopped, the slurry inlet ball valve 4 and the slurry outlet ball valve 5 are closed, and pressure relief is prepared; S0403-2. Open the pressure relief valve at the cement slurry tank of the shield machine to relieve the pressure on pipeline 11, or open the pressure relief valve at the ball end pipeline to relieve the pressure; S0404-2, rotating the wheel 15 of the ball-serving mechanism 7, pushing the fixed plate 17, so that the cleaning ball 9 falls into the slurry pipe 12 through the thickened pipe 18, and judging whether the cleaning ball 9 falls into place by the counter 16; S0405-2, open the slurry inlet ball valve 4 and the slurry outlet ball valve 5, start the transfer pump 3, start to transport the slurry, and push the cleaning ball 9 forward while transporting the slurry to clean the slurry pipeline 12; S0406-2. Observe the flow rate and pressure gauge data. If the flow rate decreases and the pressure increases, it means that the cleaning ball 9 has been driven into the slurry pipe 12. The slurry pipe 12 is not disassembled during the use stage, and the slurry is directly driven into the mortar tank; S0407-2. Observe the flow rate and pressure gauge data. If the flow rate increases and the pressure decreases, it means that the cleaning ball 9 has been hit into the ball receiving mechanism 10. During the use phase, the pipeline 11 is not disassembled and the slurry is directly driven into the mortar tank.

[0034] Embodiment three: A device for transporting cement slurry for a shield machine via a pipeline, used to implement the method mentioned in the above-mentioned embodiment 1, comprises a transfer tank 1, a stirring mechanism 2 is arranged in the transfer tank 1, a transfer pump 3 is connected to the discharge port of the transfer tank 1, the transfer pump 3 is connected to a pipeline 11, the other end of the pipeline 11 is used to connect to the shield machine, and a ball-serving mechanism 7 and a ball-receiving mechanism 10 are arranged on the pipeline 11.

[0035] In this embodiment, two ends of the ball-launching mechanism 7 are respectively connected to the pipeline 11 and the transfer pump 3 , and the ball-launching mechanism 7 includes a detachable ball-release port end cover 8 .

[0036] In this embodiment, the ball receiving mechanism 10 includes a slurry pipe 12 and a ball receiving pipe 13. Both ends of the slurry pipe 12 are connected to the pipeline 11. One end of the ball receiving pipe 13 is connected to the middle section of the slurry pipe 12, and the other end is a detachable seal. The ball receiving pipe 13 is located below the slurry pipe 12. An arc-shaped guide plate 14 is also provided in the slurry pipe 12. The arc-shaped guide plate 14 is used to guide the cleaning ball 9 into the ball receiving pipe 13.

[0037] In this embodiment, the ball receiving pipe 13 further includes a pressure relief ball valve 6 .

[0038] Embodiment 4: A device for transporting cement slurry of a shield machine through a pipeline, used to implement the method mentioned in the above-mentioned embodiment 2, such as Figure 7 and Figure 8 As shown, it includes a transfer tank 1, a stirring mechanism 2 is arranged in the transfer tank 1, a transfer pump 3 is connected to the discharge port of the transfer tank 1, the transfer pump 3 is connected to the pipeline 11, the other end of the pipeline 11 is used to connect the shield machine, and a ball serving mechanism 7 and a ball receiving mechanism 10 are arranged on the pipeline 11. The ball serving mechanism 7 includes a roulette 15, and the roulette 15 is connected to a fixed plate 17 with holes. Each hole position on the fixed plate 17 can place a cleaning ball 9, and the ball receiving pipe 13 can accommodate a plurality of cleaning balls 9, which also includes a counter 16 and a thickened pipe 18 for facilitating the falling of the cleaning balls 9.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for transporting cement slurry of a shield machine through a pipeline, characterized in that: The following steps are involved: S01, mixing cement slurry in the ground mixing workshop, conveying the mixed cement slurry into the transfer tank (1), and starting the mixing mechanism (2) of the transfer tank (1); S02, when the cement slurry in the transfer tank (1) exceeds 1 / 3, start the transfer pump (3) to transport the cement slurry into the shield machine; S03, when the slurry in the shield machine mortar tank exceeds 1 / 4, the shield machine starts to advance and inject double liquid slurry; S04. After the cement slurry required for each ring is transported, the pipeline (11) is cleaned before the next ring of cement slurry is transported.

2. The method for transporting cement slurry of a shield machine through a pipeline according to claim 1, characterized in that: Step S01 includes the following steps: S0101. According to the established ratio, the bentonite slurry making unit first prepares and reserves the bentonite slurry. When the cement slurry making unit mixes and stirs the components of the cement slurry at high speed, the prepared bentonite slurry is first mixed, then the clean water is mixed, then the stabilizer is mixed, and finally the cement powder is added through the screw conveyor; S0102. The prepared cement slurry is stored in 2.4m³ mixing tanks. Each set of cement slurry mixing tank uses a transfer hose pump for transportation, with a total of 2 sets of cement slurry transportation units; S0103. Start the mixing mechanism (2) in the transfer tank (1) and notify the ground mixing station to start conveying slurry. When there is 1 / 3 cement slurry in the transfer tank (1), start the transfer pump (3) to pump slurry into the shield machine.

3. The method for transporting cement slurry of a shield machine through a pipeline according to claim 1, characterized in that: Step S04 includes the following steps: S0401-1. Stop the transfer pump (3), close the slurry inlet ball valve (4) and the slurry outlet ball valve (5), and prepare for pressure relief; S0402-1. Open the pressure relief ball valve (6) to relieve the pressure in the pipeline (11); S0403-1. Use a wrench to remove the ball outlet cover (8) of the ball outlet mechanism (7), put the cleaning ball (9) into the pipeline (11), and use a tool to push the cleaning ball (9) to the front end of the slurry outlet ball valve (5); S0404-1. Reinstall the ball outlet cover (8) and close the pressure relief ball valve (6); S0405-1. Start the transfer pump (3) to start conveying the slurry, and at the same time push the cleaning ball (9) forward to clean the pipeline (11); S0406-1, after the transfer pump (3) has been running for one minute, the transfer pump (3) is turned off, and steps S0401-1 and S0402-2 are repeated. The ball opening end cover (8) is opened to check whether the cleaning ball (9) has entered the pipeline (11). At the same time, it can also be determined whether the cleaning ball (9) has entered the pipeline (11) based on the slurry discharge flow rate of the shield machine pipeline (11). If the cleaning ball (9) has not entered the pipeline (11), the cleaning ball (9) is placed deeper into the pipeline (11), and steps S0404-1 and S0405-1 are repeated. S0407-1. Observe the slurry flow rate, pressure gauge and flow meter data in the mortar tank. If the flow rate increases and the pressure decreases, it means that the cleaning ball (9) has been hit into the ball receiving mechanism (10). During the use stage, the pipeline (11) is not disassembled and the slurry is directly pumped into the mortar tank; S0408-1. Disassemble the ball receiving mechanism (10) and take out the cleaning ball (9); S0409-1. Assemble the ball receiving mechanism (10).

4. The method for transporting cement slurry of a shield machine through a pipeline according to claim 1, characterized in that: Step S04 includes the following steps: S0401-2. Use a wrench to dismantle the ball release port end cover (8) of the ball launching mechanism (7), place a plurality of cleaning balls (9) one by one into the holed fixing plate (17) of the ball launching mechanism (7), and replace the ball release port end cover (8); S0402-2. When the pipeline (11) needs to be cleaned using a cleaning ball (9), the transfer pump (3) is stopped, and the slurry inlet ball valve (4) and the slurry outlet ball valve (5) are closed to prepare for pressure relief; S0403-2. Open the pressure relief valve at the cement slurry tank of the shield machine to relieve the pressure on the pipeline (11), or open the pressure relief valve at the ball-launching end pipeline to relieve the pressure; S0404-2, rotating the wheel (15) of the ball-serving mechanism (7) to push the fixed plate (17), so that the cleaning ball (9) passes through the thickened pipe (18) and falls into the slurry pipe (12), and judging whether the cleaning ball (9) has fallen into place by using the counter (16); S0405-2, open the slurry inlet ball valve (4) and the slurry outlet ball valve (5), start the transfer pump (3), start to transport the slurry, and at the same time push the cleaning ball (9) forward to clean the slurry pipeline (12); S0406-2. Observe the flow rate and pressure gauge data. If the flow rate decreases and the pressure increases, it means that the cleaning ball (9) has been driven into the slurry pipe (12). The slurry pipe (12) is not opened during use, and the slurry is directly driven into the mortar tank. S0407-2. Observe the flow rate and pressure gauge data. If the flow rate increases and the pressure decreases, it means that the ball has hit the ball receiving mechanism (10). During the use phase, the pipeline (11) is not disassembled and the slurry is directly pumped into the mortar tank.

5. The method for transporting cement slurry for shield machines through pipelines according to any one of claims 3 or 4, characterized in that: The cleaning ball (9) is a rubber ball, and the outer wall of the rubber ball can abut against the inner wall of the pipeline (11).

6. A device for transporting cement slurry of a shield machine through a pipeline, characterized in that: A method for implementing the method according to any one of claims 1 to 3, comprising a transfer tank (1), a stirring mechanism (2) being arranged in the transfer tank (1), a transfer pump (3) being connected to a discharge port of the transfer tank (1), the transfer pump (3) being connected to a pipeline (11), the other end of the pipeline (11) being used for connecting to a shield machine, and a ball-serving mechanism (7) and a ball-receiving mechanism (10) being arranged on the pipeline (11).

7. The device for transporting cement slurry of a shield machine through a pipeline according to claim 6, characterized in that: The two ends of the ball launching mechanism (7) are respectively connected to the pipeline (11) and the transfer pump (3), and the ball launching mechanism (7) comprises a detachable ball release port end cover (8).

8. The device for transporting cement slurry of a shield machine through a pipeline according to claim 6, characterized in that: The ball receiving mechanism (10) comprises a slurry pipe (12) and a ball receiving pipe (13); both ends of the slurry pipe (12) are connected to the pipeline (11); one end of the ball receiving pipe (13) is connected to the middle section of the slurry pipe (12); the other end is a detachable sealing device; the ball receiving pipe (13) is located below the slurry pipe (12).

9. The device for transporting cement slurry of a shield machine through a pipeline according to claim 8, characterized in that: The ball receiving pipeline (13) further comprises a pressure relief ball valve (6).

10. A device for transporting cement slurry of a shield machine through a pipeline, characterized in that: The method for implementing the method of claim 4 comprises a transfer tank (1), wherein a stirring mechanism (2) is arranged in the transfer tank (1), a transfer pump (3) is connected to the discharge port of the transfer tank (1), the transfer pump (3) is connected to a pipeline (11), the other end of the pipeline (11) is used to connect to a shield machine, a ball-serving mechanism (7) and a ball-receiving mechanism (10) are arranged on the pipeline (11), the ball-serving mechanism (7) comprises a wheel (15), the wheel (15) is connected to a fixed plate (17) with holes, each hole position on the fixed plate (17) can be placed with a cleaning ball (9), and the ball-receiving pipeline (13) can accommodate a plurality of cleaning balls (9).

Images