Slurry discharging system for slurry pipeline of slurry shield and using method
By using a small mud tank and a connecting pipe system with valves in the slurry shield tunneling construction, the residual slurry in the mud pipe is actively extracted and collected into a large mud tank, which solves the problem of residual slurry discharge in the mud pipe during the simultaneous installation of box culverts and tunnels, achieving efficient and safe residual slurry treatment and reducing the pipeline erection height.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-26
- Publication Date
- 2026-04-17
AI Technical Summary
In the slurry shield tunneling construction where box culverts and tunnels are installed simultaneously, the problem of removing residual slurry from the slurry pipes was not effectively solved, resulting in contamination of the box culvert installation surface.
A slurry pipeline drainage system for slurry shield tunneling is adopted, including a small slurry tank and slurry discharge and inlet pipelines distributed vertically and vertically. The slurry discharge and inlet extension hoses are connected by a connecting pipe with a valve. The slurry pump actively extracts the excess slurry and collects it into the large slurry tank to avoid contaminating the installation surface of the box culvert.
This method enables efficient and safe discharge of residual slurry from the slurry pipe during the simultaneous installation of box culverts and tunnels, avoiding contamination of the box culvert installation surface, reducing the pipeline erection height, and improving construction efficiency.
Smart Images
Figure CN121875737A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shield tunnel engineering technology, specifically to a slurry pipeline drainage system for slurry shield tunnels and its usage method. Background Technology
[0002] Large-diameter slurry shield tunnels have been widely used and promoted in river-crossing and sea-crossing projects such as highways, railways, and integrated utility tunnels. Various technical challenges have emerged in these projects, posing numerous difficulties for construction. For example, a large-diameter slurry shield tunnel project under a harbor highway. The tunnel is approximately 3.1 km long with an outer diameter of 13.3 m for the tunnel segments, and includes a 10.8 m wide drop-bottom box culvert as the highway foundation. The tunnel segments are connected using CT joints without bolts, and a large slurry shield tunnel with a diameter of 13.72 m was selected for construction.
[0003] During the construction of a slurry shield tunneling machine, it is necessary to extend the slurry pipeline, which includes the slurry discharge pipeline and the slurry inlet pipeline. When extending the slurry pipeline, it is necessary to disconnect the connected slurry discharge extension hose and the slurry inlet extension hose, and then reconnect the corresponding slurry discharge pipe and the slurry inlet pipe. When disconnecting the pipes, a large amount of residual slurry will remain in the slurry discharge pipeline and the slurry inlet pipeline, which needs to be discharged.
[0004] Traditional slurry shield tunnels do not have box culverts. During pipeline extension, excess slurry is usually discharged directly into the tunnel. Then, slurry pumps located at the tail of the shield or downstream dam pump the slurry into a slurry tank on the trolley for storage. After the pipeline extension is completed, the slurry is pumped into the circulation pipeline and discharged from the tunnel.
[0005] However, in tunnels with box culverts, the residual slurry discharged into the tunnel will contaminate the installation surface of the box culvert, so traditional methods cannot be used for residual slurry recovery.
[0006] Based on the above background, there is an urgent need for a slurry pipe drainage system and its usage method for slurry shield tunneling to solve the problem of discharging residual slurry in the slurry pipe during the construction of slurry shield tunneling where box culverts and tunnels are installed simultaneously. Summary of the Invention
[0007] This invention addresses the shortcomings of existing technologies by providing a slurry pipe drainage system and its usage method for slurry shield tunneling, in order to solve the problem of discharging residual slurry from the slurry pipe during slurry shield tunneling construction where box culverts and tunnels are installed simultaneously.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A slurry drainage system for a slurry shield tunneling machine includes a small slurry tank on the first floor of the trolley and slurry drainage and inlet pipes arranged in staggered positions on the upper and lower floors, as well as a large slurry tank on the second floor of the upper trolley. The slurry drainage pipes are composed of a slurry drainage pipe and a slurry drainage extension hose connected together, and the slurry inlet pipes are composed of an inlet pipe and an inlet inlet hose connected together. The ends of the slurry drainage extension hose and the inlet inlet extension hose are respectively connected to the shield machine trolley, and their side walls are connected by a connecting pipe with a valve. The bottom of the inlet inlet extension hose is provided with an output pipe with a valve, and the top of the slurry drainage extension hose is provided with an air inlet pipe with a valve. A three-way pipe is provided in the small slurry tank. One pipe of the three-way pipe is used to connect to the small slurry tank and is provided with a sludge removal valve. One pipe is used to detachably connect to the output pipe. One pipe is used to connect to the slurry drainage hose and is provided with a slurry pump. The other end of the slurry drainage hose extends upward to the top of the open end of the large slurry tank.
[0010] To optimize the above technical solution, the specific measures also include: Furthermore, the slurry discharge pipe and the slurry discharge extension hose are connected by a connecting flange, and the slurry inlet pipe and the slurry inlet extension hose are connected by a connecting flange.
[0011] Furthermore, upstream and downstream gate valves are respectively provided on the upstream and downstream pipes on both sides of the connection between the slurry discharge pipe and the slurry discharge extension hose, and an air inlet pipe is provided at the top of the slurry discharge extension hose located between the upstream and downstream gate valves; upstream and downstream gate valves are respectively provided on the upstream and downstream pipes on both sides of the connection between the slurry inlet pipe and the slurry inlet extension hose, and an output pipe is provided at the bottom of the slurry inlet extension hose located between the upstream and downstream gate valves.
[0012] Furthermore, the output pipe is equipped with a discharge valve, and the pipe port in the tee pipe used to connect to the output pipe is equipped with a first quick connector, which is used to detachably connect to the output pipe.
[0013] Furthermore, it also includes an extension hose, wherein the first quick connector is used to connect one end of the extension hose, and the other end of the extension hose is provided with a third quick connector, which is used to detachably connect to the outlet of the output pipe.
[0014] Furthermore, the end of the tee pipe used to connect to the slurry discharge hose is provided with a second quick connector, which is used to detachably connect to the pipe opening of the slurry discharge hose.
[0015] Furthermore, it also includes an extension hose, the second quick connector is used to connect one end of the extension hose, and the other end of the extension hose is provided with a fourth quick connector, which is used to detachably connect to the pipe opening of the slurry discharge hose; the bottom of the small mud tank is arrayed with four lockable rollers.
[0016] Furthermore, the mud pump is installed inside the small mud tank via a mounting column, and the installation height of the mud pump is higher than the preset mud storage height of the small mud tank.
[0017] Furthermore, the connecting pipe includes two rigid pipes and one flexible pipe. The two rigid pipes are respectively installed on the side walls of the slurry discharge extension hose and the slurry inlet extension hose. The two rigid pipes are connected to each other through the flexible pipe, and a connecting valve is provided on each rigid pipe.
[0018] Furthermore, a method of use, applied to the above-mentioned slurry pipeline drainage system for slurry shield tunneling, is characterized by comprising the following steps: When the tunnel boring machine trolley has completed its excavation and it is necessary to extend the slurry discharge pipeline and the slurry inlet pipeline, first open the valve of the connecting pipe to connect the slurry discharge extension hose and the slurry inlet extension hose, open the valve of the output pipe, and open the sludge release valve on the tee pipe so that the pipeline can be depressurized to the small mud tank until no more slurry continues to flow out. Afterwards, close the residual slurry valve, open the air inlet pipe, and then start the mud pump. The residual slurry in the corresponding pipeline is pumped into the large mud tank through the slurry discharge hose by the mud pump. After the slurry is pumped out, turn off the mud pump, close the output pipe valve, disconnect the output pipe from the tee pipe, and open the slurry removal valve. At this time, the operators can disconnect the slurry discharge pipe from the slurry discharge extension hose and the slurry inlet pipe from the slurry inlet extension hose, and then reconnect the slurry discharge pipe and the slurry inlet pipe. Finally, install the slurry discharge extension hose and the slurry inlet extension hose accordingly. During the connection of the slurry discharge pipeline and the slurry inlet pipeline, the small mud tank continues to wait and collect the residual mud in the slurry discharge hose and the tee pipe.
[0019] The beneficial effects of this invention are: This invention connects the sidewalls of the slurry discharge extension hose and the slurry inlet extension hose with a valved connecting pipe, allowing them to be connected during slurry discharge. The slurry discharge extension hose has a valved air inlet pipe at the top, and the slurry inlet extension hose has a valved outlet pipe at the bottom, allowing them to be opened during slurry discharge, directly connecting to the atmosphere and a tee pipe. With the slurry extraction valve closed, a mud pump actively extracts the residual slurry from the slurry discharge and inlet pipes, which is then transported through the slurry discharge hose into a large mud tank. This solves the problem of residual slurry discharge in the mud pipes during slurry shield tunneling construction where box culverts and tunnels are installed simultaneously.
[0020] This invention utilizes a three-way pipe connected to a small mud tank and equipped with a residual slurry extraction valve. Before residual slurry extraction, the small mud tank can be connected to the discharge extension hose and the inlet extension hose, allowing the pipeline to be depressurized until no slurry flows out, thus completing the collection of residual slurry during the depressurization period. Furthermore, after the residual slurry extraction in the discharge and inlet pipelines is completed and the mud pump is shut down, the output pipe can be further closed and disconnected, and the residual slurry extraction valve can be opened. Then, the discharge pipe and the discharge extension hose, as well as the inlet pipe and the inlet extension hose, can be disconnected and reconnected. The small mud tank waits for and collects the residual slurry in the discharge hose and the three-way pipe, completely avoiding any potential contamination of the culvert installation surface by residual slurry.
[0021] The small mud box 16 in this invention has a small volume requirement, so its height can be reduced. Consequently, the installation height of the corresponding slurry discharge pipe and slurry inlet pipe can be reduced accordingly, thereby enabling the slurry discharge pipe and slurry inlet pipe to be efficiently extended, stably fixed on the ground, and safely and efficiently dismantled. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the connection of a slurry pipeline drainage system for a slurry shield tunneling machine proposed in this invention.
[0023] Reference numerals: 1. Tunnel boring machine trolley; 2. Grouting extension hose; 3. Grouting pipe; 4. Connecting flange; 5. Discharge extension hose; 6. Discharge pipe; 7. Air inlet pipe; 8. Connecting valve; 9. Excess discharge valve; 10. Excess extraction valve; 11. First quick connector; 12. Second quick connector; 13. Discharge hose; 14. Mud pump; 15. Large mud tank; 16. Small mud tank; 17. Upstream gate valve; 18. Downstream gate valve; 19. Connecting pipe; 20. T-connector. Detailed Implementation
[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0025] As attached Figure 1As shown in the figure, an embodiment of the present invention provides a slurry drainage system for a slurry shield tunneling machine, comprising a small slurry tank 16 located on the first floor of the trolley and slurry drainage and inlet pipes arranged in a staggered manner on the upper and lower floors, and a large slurry tank 15 located on the second floor of the upper trolley. The slurry drainage pipes are formed by connecting a slurry drainage pipe 6 and a slurry drainage extension hose 5, and the slurry inlet pipes are formed by connecting a slurry inlet pipe 3 and a slurry inlet extension hose 2. The ends of the slurry drainage extension hose 5 and the slurry inlet extension hose 2 are respectively connected to the shield tunneling machine trolley 1, and their side walls are connected by a connecting pipe with a valve. The bottom of the slurry inlet extension hose 2 is equipped with an output pipe with a valve, and the top of the slurry discharge extension hose 5 is equipped with an air inlet pipe 7 with a valve. The small mud tank 16 is equipped with a three-way pipe 20. One pipe of the three-way pipe 20 is used to connect to the small mud tank 16 and is equipped with a sludge extraction valve 10. Another pipe is used to detachably connect to the output pipe. The third pipe is used to connect to the slurry discharge hose 13 and is equipped with a mud pump 14. The other end of the slurry discharge hose 13 extends upward to the top of the open end of the large mud tank 15. The mud pump 14 is connected to the power supply equipment.
[0026] This invention connects the side walls of the slurry discharge extension hose 5 and the slurry inlet extension hose 2 through a connecting pipe 19 with a valve, allowing them to be connected during slurry discharge. The slurry discharge extension hose 5 is connected to the atmosphere and the tee pipe 20 through an air inlet pipe 7 with a valve at the top and an outlet pipe with a valve at the bottom of the slurry inlet extension hose 2, allowing them to be opened during slurry discharge. With the slurry extraction valve 10 closed, the slurry pump 14 actively extracts the slurry from the slurry discharge and inlet pipes, and then the slurry discharge hose 13 transmits it into the large slurry tank 15. This solves the problem of slurry discharge in the slurry pipe during the construction of a slurry shield tunnel where box culverts and tunnels are installed simultaneously. Meanwhile, through the pipe in the three-way pipe 20 that connects to the small mud tank 16 and is equipped with a residual slurry valve 10, the small mud tank 16 can be connected to the slurry discharge extension hose 5 and the slurry inlet extension hose 2 before the residual slurry is extracted, and the pipeline can be depressurized until no slurry flows out, thereby completing the collection of residual slurry during the depressurization period; after the residual slurry extraction in the slurry discharge pipeline and the slurry inlet pipeline is completed and the mud pump 14 is turned off, the output pipe can be further closed and disconnected, and the residual slurry valve 10 can be opened. Then, the slurry discharge pipe 6 and the slurry discharge extension hose 5, as well as the slurry inlet pipe 3 and the slurry inlet extension hose 2, can be disconnected and reconnected. The small mud tank 16 waits for and collects the residual slurry in the slurry discharge hose 13 and the three-way pipe 20, completely avoiding the possible pollution of the box culvert installation surface by the residual slurry.
[0027] In the above embodiment, the valve of the air inlet pipe 7 can be a high-pressure ball valve, which is intended to provide an air inlet channel when extracting residual slurry, so as to ensure that the slurry can be extracted smoothly. Its position is located at the highest point of the entire system.
[0028] In one specific embodiment based on the above, the slurry discharge pipe 6 and the slurry discharge extension hose 5 are connected by a connecting flange 4, and the slurry inlet pipe 3 and the slurry inlet extension hose 2 are connected by a connecting flange 4. In this embodiment, the connection flange 4 facilitates the assembly and disassembly of the slurry discharge pipe 6 and the slurry discharge extension hose 5, as well as the assembly and disassembly of the slurry inlet pipe 3 and the slurry inlet extension hose 2.
[0029] In another specific embodiment based on the above, upstream gate valve 17 and downstream gate valve 18 are respectively provided on the upstream and downstream pipes on both sides of the connection between the slurry discharge pipe 6 and the slurry discharge extension hose 5, and air inlet pipe 7 is provided at the top of the slurry discharge extension hose 5 located between the upstream gate valve 17 and the downstream gate valve 18; upstream gate valve 17 and downstream gate valve 18 are respectively provided on the upstream and downstream pipes on both sides of the connection between the slurry inlet pipe 3 and the slurry inlet extension hose 2, and output pipe is provided at the bottom of the slurry inlet extension hose 2 located between the upstream gate valve 17 and the downstream gate valve 18.
[0030] In this embodiment, by installing upstream gate valve 17 and downstream gate valve 18 on the upstream and downstream pipelines respectively, a section of the pipeline between the two can be blocked and isolated during discharge, thereby controlling and reducing the total amount and time of discharge, and improving operational efficiency. Simultaneously, by placing the air inlet pipe 7 at the top of the slurry discharge extension hose 5 located between the upstream gate valve 17 and downstream gate valve 18, and placing the output pipe at the bottom of the slurry inlet extension hose 2 located between the upstream gate valve 17 and downstream gate valve 18, it can be ensured that the air inlet pipe 7 and the output pipe are always in an effective working state.
[0031] In another specific embodiment based on the above, the output pipe is provided with a drain valve 9, and the pipe port of the tee pipe 20 used for connecting to the output pipe is provided with a first quick connector 11, which is used for detachably connecting the output pipe. Thus, the first quick connector 11 can be used for convenient assembly and disassembly of one pipe port of the tee pipe 20 and the output pipe; in this embodiment, the first quick connector 11 can be an existing butt connector.
[0032] In a further specific embodiment based on the above, an extension hose is also included. A first quick connector 11 is used to connect one end of the extension hose, and the other end of the extension hose is provided with a third quick connector for detachably connecting to the outlet pipe. In this embodiment, when the outlet pipe continues to move along the slurry inlet pipe, it can be extended and connected via the extension hose. Simultaneously, after the discharge is completed, the extension hose and outlet pipe can be directly separated, with the end of the extension hose suspended separately, and the small mud tank 16 waiting to collect the remaining mud in the extension hose.
[0033] In another specific embodiment based on the above, the end of the tee pipe 20 used for connecting to the slurry drainage hose 13 is provided with a second quick connector 12, which is used to detachably connect to the pipe opening of the slurry drainage hose 13. This allows for convenient assembly and disassembly between the tee pipe 20 and the slurry drainage hose 13.
[0034] In a further specific embodiment based on the above, an extension hose is also included. A second quick connector 12 is used to connect one end of the extension hose, and a fourth quick connector is provided at the other end of the extension hose. The fourth quick connector is used to detachably connect to the pipe opening of the discharge hose 13. The bottom of the small mud tank 16 has four lockable rollers arranged in an array. In this embodiment, the rollers can be used to move the small mud tank 16 as needed, following the position of the output pipe, and the extension hose can be used to indirectly connect the second quick connector 12 to the pipe opening of the discharge hose 13.
[0035] In another specific embodiment based on the above, the mud pump 14 is mounted inside the small mud tank 16 via a mounting column, and the installation height of the mud pump 14 is higher than the preset mud storage height of the small mud tank 16. In this embodiment, the mud pump 14 is mounted inside the small mud tank 16 via a mounting column, which reduces the space occupied by the device and facilitates the use of the mud pump 14.
[0036] In another specific embodiment based on the above, the connecting pipe 19 includes two rigid pipes and one flexible pipe. The two rigid pipes are respectively installed on the side walls of the slurry discharge extension hose 5 and the slurry inlet extension hose 2, and the two rigid pipes are connected by the flexible pipe. A connecting valve 8 is provided on each rigid pipe. In this embodiment, the connecting pipe 19 takes into account the synchronous deviation during retraction and extension, and adopts a combined rigid and flexible pipe structure. The extended flexible pipe is used to adjust the deviation and avoid pipe breakage.
[0037] A method of use, applied to the above-mentioned slurry pipeline drainage system for slurry shield tunneling, includes the following steps: When the tunnel boring machine trolley 1 has completed its excavation and it is necessary to extend the slurry discharge pipeline and the slurry inlet pipeline, first open the valve of the connecting pipe 19 to connect the slurry discharge extension hose 5 and the slurry inlet extension hose 2, open the valve of the output pipe, and open the sludge release valve 10 on the three-way pipe 20 so that the pipeline can be depressurized to the small mud tank 16 until no more slurry continues to flow out. After that, close the residual slurry valve 10, open the air inlet pipe 7, and then start the mud pump 14. The residual slurry in the corresponding pipeline is pumped into the large mud tank 15 through the mud pump 14 and the slurry discharge hose 13. After the slurry extraction is completed, turn off the mud pump 14, close the output pipe valve, disconnect the output pipe from the tee pipe 20, and open the slurry extraction valve 10. At this time, the operators can disconnect the slurry discharge pipe 6 from the slurry discharge extension hose 5, and the slurry inlet pipe 3 from the slurry inlet extension hose 2, and then reconnect the slurry discharge pipe 6 and the slurry inlet pipe 3. Finally, complete the installation of the slurry discharge extension hose 5 and the slurry inlet extension hose 2. During the connection of the slurry discharge pipeline and the slurry inlet pipeline, the small mud tank 16 continues to wait for and collect the residual mud in the slurry discharge hose 13 and the tee pipe 20.
[0038] In a further specific embodiment based on the above, when the small mud tank 16 reaches the preset capacity, when the three-way pipe 20 is connected to the output pipe, the valve of the output pipe is closed, the sludge extraction valve 10 is opened, and the mud pump 14 is started, so that the mud in the small mud tank 16 is pumped separately into the large mud tank 15.
[0039] One specific embodiment of the present invention is as follows: When the tunnel boring machine trolley 1 has completed its excavation and it is necessary to extend the slurry discharge pipeline and the slurry inlet pipeline, the bypass mode is first activated to drain the slag-containing mud from the circulating slurry discharge pipeline and the slurry inlet pipeline, so that the pipeline is filled with fresh slurry. At the same time, the existing sewage in the large mud tank 15 is drained by the mud sewage pumping system pre-equipped with the tunnel boring machine. Then, the upstream gate valve 17 and the downstream gate valve 18 of the slurry discharge pipeline and the slurry inlet pipeline are closed respectively to cut off the section of the slurry discharge pipeline and the slurry inlet pipeline that needs to be connected, thereby reducing the total amount of discharge and the time consumed. Next, open the connecting valve 8 on the connecting pipe 19 to connect the slurry discharge pipe and the slurry inlet pipe of this section. Through the first quick connector 11 and other structures, complete the connection between the output pipe and the tee pipe 20. Through the second quick connector 12 and other structures, complete the connection between the tee pipe 20 and the slurry discharge hose 13. Then open the residual discharge valve 9 and slightly open the residual extraction valve 10 to allow the slurry discharge pipe and the slurry inlet pipe of this section to depressurize to the small mud tank 16 until no slurry flows out naturally. Afterwards, close the residual slurry valve 10, open the air inlet pipe 7, and then start the mud pump 14. The residual slurry in the discharge pipe and the inlet pipe of this section is pumped into the large mud tank 15 through the discharge hose 13 via the mud pump 14. After the slurry extraction is completed, turn off the mud pump 14, close the discharge valve 9, disconnect the connection between the output pipe and the three-way pipe 20, open the discharge valve 10, and close the air inlet pipe 7 and the connecting valve 8. At this time, the operators can disconnect the connecting flange 4 between the slurry discharge pipe 6 and the slurry discharge extension hose 5, and the connecting flange 4 between the slurry inlet pipe 3 and the slurry inlet extension hose 2, and add a new slurry discharge pipe 6 and the slurry inlet pipe 3 to complete the connection. Then, rewind the slurry discharge extension hose 5 and the slurry inlet extension hose 2 and reconnect the ends of the new slurry discharge pipe 6 and the slurry inlet pipe 3. Then, open the respective upstream gate valve 17 and downstream gate valve 18, and use the mud and sewage pumping system equipped with the tunnel boring machine to pump the mud and water in the large mud tank 15 back to the circulation pipeline to complete the pipeline connection operation. During the connection of the slurry discharge pipeline and the slurry inlet pipeline, the small mud tank 16 continues to wait for and collect the residual mud in the slurry discharge hose 13 and the tee pipe 20.
[0040] The system of this invention can effectively perform drainage before dismantling, eliminating the situation of slurry spillage.
[0041] In this embodiment, the project can use DN500 slurry discharge pipe 6 and slurry inlet pipe 3. The mud pipeline can be ground-mounted and the total height of the installation should not exceed 2m. Considering the construction space, the height of the small mud box 16 can be greatly reduced to no more than 0.8m. Based on the changes in tunnel slope, the installation of T-pipe 20 and small mud tank 16 can solve problems such as pressure relief and incomplete pumping. The small mud tank 16 has a small volume and can be reduced to 5m³ as needed, with a height of 0.8m, and its planar shape can match the space of the trolley.
[0042] This invention solves the technical problem of mismatch in the layout scheme of ground-mounted low-headroom pipelines, effectively reducing the space occupied by the small mud tank 16. Excess mud is directly discharged into the large mud tank 15 through 13, realizing the transfer of mud. Moreover, because the small mud tank 16 has a small volume requirement, its height can be reduced. The corresponding slurry discharge pipeline and slurry inlet pipeline, which originally needed to be erected at a height of more than 2m, can be reduced to less than 1m. This allows the slurry discharge pipeline and slurry inlet pipeline to be efficiently extended, stably fixed on the ground, and safely and efficiently dismantled.
[0043] The system of this invention is based on a mud discharge system before the extension and dismantling of a low-height, non-suspended, large-diameter slurry shield tunnel mud pipeline. It is fundamentally different from systems that recover flushing wastewater from the tunnel into a circulation pipeline after the pipeline is extended, and is more convenient to promote and apply.
[0044] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in the invention are only for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.
[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0046] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that those skilled in the art will understand that various changes, modifications, substitutions, refinements, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations should be considered within the scope of protection of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A slurry pipeline drainage system for slurry shield tunneling, characterized in that: It includes a small mud tank (16) located on the first floor of the trolley and upper and lower staggered mud discharge and inlet pipes, as well as a large mud tank (15) located on the second floor of the upper trolley. The mud discharge pipe is composed of a mud discharge pipe (6) and a mud discharge extension hose (5), and the mud inlet pipe is composed of a mud inlet pipe (3) and a mud inlet extension hose (2). The ends of the mud discharge extension hose (5) and the mud inlet extension hose (2) are respectively connected to the shield machine trolley (1), and their side walls are connected by a connecting pipe (19) with a valve. The bottom of the hose (2) is provided with an output pipe with a valve, the top of the slurry discharge extension hose (5) is provided with an air inlet pipe (7) with a valve, the small mud tank (16) is provided with a three-way pipe (20), one pipe of the three-way pipe (20) is used to connect to the small mud tank (16) and is provided with a sludge extraction valve (10), one pipe is used to detachably connect to the output pipe, and one pipe is used to connect to the slurry discharge hose (13) and is provided with a mud pump (14). The other end of the slurry discharge hose (13) extends upward to the top of the opening at the top of the large mud tank (15).
2. The slurry pipeline drainage system for slurry shield tunneling according to claim 1, characterized in that: The discharge pipe (6) and the discharge extension hose (5) are connected by a connecting flange (4), and the inlet pipe (3) and the inlet extension hose (2) are connected by a connecting flange (4).
3. The slurry pipeline drainage system for slurry shield tunneling according to claim 1, characterized in that: On the upstream and downstream pipes on both sides of the connection between the slurry discharge pipe (6) and the slurry discharge extension hose (5), an upstream gate valve (17) and a downstream gate valve (18) are respectively provided. An air inlet pipe (7) is set at the top of the slurry discharge extension hose (5) between the upstream gate valve (17) and the downstream gate valve (18). On the upstream and downstream pipes on both sides of the connection between the slurry inlet pipe (3) and the slurry inlet extension hose (2), an upstream gate valve (17) and a downstream gate valve (18) are respectively provided. An output pipe is set at the bottom of the slurry inlet extension hose (2) between the upstream gate valve (17) and the downstream gate valve (18).
4. The slurry pipeline drainage system for slurry shield tunneling according to claim 1, characterized in that: The output pipe is equipped with a drain valve (9), and the pipe port of the three-way pipe (20) used to connect to the output pipe is equipped with a first quick connector (11), which is used to detachably connect to the output pipe.
5. A slurry pipeline drainage system for slurry shield tunneling according to claim 4, characterized in that: It also includes an extension hose, the first quick connector (11) is used to connect one end of the extension hose, and the other end of the extension hose is provided with a third quick connector, which is used to detachably connect to the outlet of the output pipe.
6. The slurry pipeline drainage system for slurry shield tunneling according to claim 1, characterized in that: The three-way pipe (20) is used to connect to the pipe end of the slurry discharge hose (13), and the second quick connector (12) is used to detachably connect to the pipe port of the slurry discharge hose (13).
7. A slurry pipeline drainage system for slurry shield tunneling according to claim 6, characterized in that: It also includes an extension hose, the second quick connector (12) for connecting one end of the extension hose, and the other end of the extension hose is provided with a fourth quick connector for detachably connecting to the pipe opening of the slurry discharge hose (13); the bottom of the small mud tank (16) is arrayed with four lockable rollers.
8. A slurry pipeline drainage system for slurry shield tunneling according to claim 1, characterized in that: The mud pump (14) is installed inside the small mud tank (16) by means of a mounting column, and the installation height of the mud pump (14) is higher than the preset mud storage height of the small mud tank (16).
9. A slurry pipeline drainage system for slurry shield tunneling according to claim 1, characterized in that: The connecting pipe (19) includes two rigid pipes and one flexible pipe. The two rigid pipes are respectively installed on the side walls of the slurry discharge extension hose (5) and the slurry inlet extension hose (2). The two rigid pipes are connected by the flexible pipe. A connecting valve (8) is provided on any rigid pipe.
10. A method of use, applied to the slurry pipeline drainage system for slurry shield tunneling as described in any one of claims 1 to 9, characterized in that, Includes the following steps: When the tunnel boring machine trolley (1) has completed its excavation and it is necessary to extend the slurry discharge pipeline and the slurry inlet pipeline, first open the valve of the connecting pipe (19), connect the slurry discharge extension hose (5) and the slurry inlet extension hose (2), open the valve of the output pipe, and open the sludge removal valve (10) on the three-way pipe (20) so that the pipeline can be depressurized to the small mud tank (16) until no more slurry continues to flow out; Afterwards, close the residual slurry valve (10), open the air inlet pipe (7), and start the mud pump (14). The residual slurry in the corresponding pipeline is pumped into the large mud tank (15) through the mud pump (14) via the slurry discharge hose (13). After the slurry is pumped out, turn off the mud pump (14), close the output pipe valve, disconnect the output pipe from the three-way pipe (20), and open the slurry valve (10). At this time, the operator can disconnect the slurry discharge pipe (6) from the slurry discharge extension hose (5) and the slurry inlet pipe (3) from the slurry inlet extension hose (2), and then connect the slurry discharge pipe (6) and the slurry inlet pipe (3), and then complete the installation of the slurry discharge extension hose (5) and the slurry inlet extension hose (2). During the connection of the slurry discharge pipeline and the slurry inlet pipeline, the small mud tank (16) continues to wait and collect the residual mud in the slurry discharge hose (13) and the three-way pipe (20).