Tunneling and slagging method and system

Abstract

The application discloses a tunnel slagging method and system, and relates to the technical field of tunnel construction, wherein the tunnel slagging method comprises the following steps: tunneling in the first direction of a subway preset line by a first shield machine from a first working well located in the middle of the subway preset line; tunneling in the second direction of the subway preset line by a second shield machine from a second working well located in the middle of the subway preset line; transporting the slag excavated by the first shield machine to a second vertical belt conveyor located in the second working well, and conveying the slag to the ground by the second vertical belt conveyor; and transporting the slag excavated by the second shield machine to a first vertical belt conveyor located in the first working well, and conveying the slag to the ground by the first vertical belt conveyor. The technical scheme of the application realizes bidirectional excavation and bidirectional slagging of the subway tunnel, greatly improves the efficiency of tunnel excavation, and shortens the construction period compared with the technical scheme of unidirectional excavation and unidirectional slagging.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and in particular to a method and system for tunnel muck removal. Background Technology

[0002] With the continuous development of underground engineering construction technology and tunnel boring equipment, tunnel boring machines are increasingly being used in tunnel construction. In subway tunnel excavation projects, since subway lines often require two lanes in both directions, double-tunnel excavation is necessary.

[0003] Currently, the typical arrangement for muck removal in subway tunnels is as follows: two tunnel boring machines (TBMs) are placed at the beginning or end of the subway line, and both TBMs excavate in the same direction. Rail transport is used inside the tunnel to transport the muck laterally to the tunnel entrance, where a vertical lifting mechanism is installed to lift the muck to the surface. This method is inefficient for long subway tunnels, such as intercity subway tunnels, resulting in low construction and muck removal efficiency and excessively long project durations. Summary of the Invention

[0004] The main objective of this invention is to provide a method for muck removal in tunnels, which aims to solve the problem of slow muck removal rate during the excavation of long subway tunnels.

[0005] To achieve the above objectives, the present invention proposes a tunnel muck removal method comprising the following steps:

[0006] The No. 1 tunnel boring machine will excavate from the No. 1 working shaft, located in the middle of the planned subway line, towards the first direction of the planned subway line. The No. 2 tunnel boring machine will excavate from the No. 2 working shaft, located in the middle of the planned subway line, towards the second direction of the planned subway line. The tail of the No. 1 tunnel boring machine will be located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft.

[0007] The excavated soil from the No. 1 tunnel boring machine is transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt. The excavated soil from the No. 2 tunnel boring machine is transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transported to the ground by the No. 1 vertical conveyor belt.

[0008] Optionally, after the step of using the No. 1 tunnel boring machine to excavate from the No. 1 working shaft located in the middle of the planned subway line toward the planned subway line in a first direction, the method further includes...

[0009] When the body of the No. 1 tunnel boring machine has completely entered the tunnel it is excavating, the No. 3 tunnel boring machine will be used to excavate from the No. 2 working shaft located in the middle of the subway pre-set line in the second direction towards the subway pre-set line. The No. 1 and No. 3 tunnel boring machines will excavate the first lane of the subway pre-set line in both directions. The tail of the No. 3 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft.

[0010] The excavated soil from the No. 1 and No. 3 tunnel boring machines were respectively transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transported to the ground by the No. 1 vertical conveyor belt.

[0011] Optionally, the step of transferring the excavated soil from the No. 1 shield tunneling machine and the No. 3 shield tunneling machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transporting it to the ground by the No. 1 vertical conveyor belt, includes:

[0012] The excavated soil from the No. 1 shield tunneling machine is unloaded onto the No. 1 extension conveyor belt connected to the tail of the No. 1 shield tunneling machine. The excavated soil from the No. 1 shield tunneling machine is then transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transported to the ground by the No. 1 vertical conveyor belt.

[0013] The excavated soil from the No. 3 tunnel boring machine is unloaded onto the No. 3 extension conveyor belt connected to the tail of the No. 3 tunnel boring machine. The No. 3 extension conveyor belt then transfers the excavated soil from the No. 3 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then the No. 1 vertical conveyor belt transports it to the ground.

[0014] Optionally, after the steps of unloading the excavated soil from the No. 1 tunnel boring machine to the No. 1 extension conveyor belt connected to the tail of the No. 1 tunnel boring machine, transferring the excavated soil from the No. 1 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft via the No. 1 extension conveyor belt, and then conveying it to the ground via the No. 1 vertical conveyor belt, the method further includes:

[0015] Determine whether the No. 1 tunnel boring machine has tunneled to the first predetermined depth;

[0016] If so, the No. 1 extension belt conveyor will be dismantled and replaced by the No. 1 continuous belt conveyor. The excavated soil from the No. 1 tunnel boring machine will be transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 1 continuous belt conveyor.

[0017] After the steps of unloading the excavated soil from the No. 3 tunnel boring machine to the No. 3 extension conveyor belt connected to the tail of the No. 3 tunnel boring machine, and then transferring the excavated soil from the No. 3 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transporting it to the surface by the No. 1 vertical conveyor belt belt, the method further includes:

[0018] Determine whether the No. 3 tunnel boring machine has tunneled to the third predetermined depth;

[0019] If so, the No. 3 extension belt conveyor will be dismantled and replaced by the No. 3 continuous belt conveyor. The excavated soil from the No. 3 tunnel boring machine will be transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 3 continuous belt conveyor.

[0020] Optionally, after the step of using the No. 2 tunnel boring machine to excavate from the No. 2 working shaft located in the middle of the pre-set subway line in a second direction toward the pre-set subway line, the method further includes:

[0021] When the body of the No. 2 tunnel boring machine is fully driven into the tunnel it is excavating, the No. 4 tunnel boring machine will be used to excavate from the No. 1 working shaft located in the middle of the subway line towards the first direction of the subway line. The No. 2 and No. 4 tunnel boring machines will excavate the second lane of the subway line in both directions. The tail of the No. 4 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft.

[0022] The excavated soil from the No. 2 and No. 4 tunnel boring machines were respectively transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt.

[0023] Optionally, the step of transferring the excavated soil from the No. 2 shield tunneling machine and the No. 4 shield tunneling machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transporting it to the ground by the No. 2 vertical conveyor belt, includes:

[0024] The excavated soil from the No. 2 shield tunneling machine is unloaded onto the No. 2 extension conveyor belt connected to the tail of the No. 2 shield tunneling machine. The excavated soil from the No. 2 shield tunneling machine is then transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and transported to the ground by the No. 2 vertical conveyor belt.

[0025] The excavated soil from the No. 4 tunnel boring machine is unloaded onto the No. 4 extension conveyor belt connected to the tail of the No. 4 tunnel boring machine. The excavated soil from the No. 4 tunnel boring machine is then transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt.

[0026] Optionally, after the step of unloading the excavated soil from the No. 2 tunnel boring machine to the No. 2 extension conveyor belt connected to the tail of the No. 2 tunnel boring machine, and then transferring the excavated soil from the No. 2 tunnel boring machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 2 extension conveyor belt, the method further includes:

[0027] Determine whether the No. 2 tunnel boring machine has tunneled to the second predetermined depth;

[0028] If so, dismantle the No. 2 extension belt conveyor and install the No. 2 continuous belt conveyor to replace the No. 2 extension belt conveyor. The excavated soil from the No. 2 tunnel boring machine will be transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 2 continuous belt conveyor.

[0029] After the step of unloading the excavated soil from the No. 4 tunnel boring machine to the No. 4 extension conveyor belt connected to the tail of the No. 4 tunnel boring machine, and then transferring the excavated soil from the No. 4 tunnel boring machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 4 extension conveyor belt, the method further includes:

[0030] Determine whether the No. 4 tunnel boring machine has tunneled to the fourth predetermined depth;

[0031] If so, the No. 4 extension belt conveyor will be dismantled and replaced by the No. 4 continuous belt conveyor. The excavated soil from the No. 4 tunnel boring machine will be transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 4 continuous belt conveyor.

[0032] This invention also proposes a tunnel muck removal system, which uses the aforementioned tunnel muck removal method for muck removal. The tunnel muck removal system includes a No. 1 shield machine and a No. 2 shield machine. The shield body of the No. 1 shield machine is located in the No. 1 working shaft in the middle of the planned subway line, and the shield body of the No. 2 shield machine is located in the No. 2 working shaft in the middle of the planned subway line. The No. 1 shield machine and the No. 2 shield machine have a first state where they have not fully entered the tunnel they are excavating, and a second state where they have fully entered the tunnel they are excavating.

[0033] When the No. 1 shield machine is in the first state, the tail of the No. 1 shield machine is located in the connecting tunnel between the No. 1 working shaft and the No. 2 working shaft or in the No. 2 working shaft. When the No. 2 shield machine is in the first state, the tail of the No. 2 shield machine is located in the connecting tunnel between the No. 1 working shaft and the No. 2 working shaft or in the No. 1 working shaft.

[0034] The tunnel muck removal system also includes a No. 1 vertical belt conveyor and a No. 2 vertical belt conveyor. The No. 1 vertical belt conveyor is located in the No. 1 working shaft, and the No. 2 vertical belt conveyor is located in the No. 2 working shaft. When the No. 1 shield machine and the No. 2 shield machine are in the first state, the No. 1 vertical belt conveyor is used to transport the muck excavated by the No. 2 shield machine to the ground, and the No. 2 vertical belt conveyor is used to transport the muck excavated by the No. 1 shield machine to the ground.

[0035] Optionally, when the No. 1 shield machine and the No. 2 shield machine are in the second state, the tunnel muck removal system also includes the No. 3 shield machine and the No. 4 shield machine;

[0036] The shield of the No. 3 tunnel boring machine is located in the No. 2 working shaft in the middle of the planned subway line. The tail of the No. 3 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft. The No. 3 tunnel boring machine and the No. 1 tunnel boring machine are located in the first lane of the planned subway line and are set in opposite directions.

[0037] The shield body of the No. 4 tunnel boring machine is located in the No. 1 working shaft in the middle of the planned subway line. The tail of the No. 4 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft. The No. 4 tunnel boring machine and the No. 2 tunnel boring machine are located in the second lane of the planned subway line and are set in opposite directions.

[0038] When the No. 1 and No. 2 tunnel boring machines are in the second state, the No. 1 vertical conveyor belt is used to transport the excavated soil from the No. 1 and No. 3 tunnel boring machines to the ground, and the No. 2 vertical conveyor belt is used to transport the excavated soil from the No. 2 and No. 4 tunnel boring machines to the ground.

[0039] Optionally, when the No. 1 shield machine and the No. 2 shield machine are in the first state, the tunnel muck removal system further includes a No. 1 extension belt conveyor and a No. 2 extension belt conveyor, the feed end of the No. 1 extension belt conveyor is connected to the discharge end of the No. 1 shield machine, and the feed end of the No. 2 extension belt conveyor is connected to the discharge end of the No. 2 shield machine.

[0040] At this time, the discharge end of the No. 1 extended belt conveyor is connected to the discharge end of the No. 2 vertical belt conveyor, and the No. 1 extended belt conveyor is used to transfer the excavated soil from the No. 1 tunnel boring machine to the No. 2 vertical belt conveyor; the discharge end of the No. 2 extended belt conveyor is connected to the feed end of the No. 1 vertical belt conveyor, and the No. 2 extended belt conveyor is used to transfer the excavated soil from the No. 2 tunnel boring machine to the No. 1 vertical belt conveyor.

[0041] When the No. 1 shield machine and the No. 2 shield machine are in the second state, the tunnel muck removal system also includes a No. 3 extension belt conveyor and a No. 4 extension belt conveyor. The feed end of the No. 3 extension belt conveyor is connected to the discharge end of the No. 3 shield machine, and the feed end of the No. 4 extension belt conveyor is connected to the discharge end of the No. 4 shield machine.

[0042] At this time, the discharge end of the No. 1 extended belt conveyor is connected to the feed end of the No. 1 vertical belt conveyor, and the discharge end of the No. 3 extended belt conveyor is connected to the feed end of the No. 1 vertical belt conveyor. The No. 1 vertical belt conveyor is used to transfer the excavated soil from the No. 1 and No. 3 tunnel boring machines to the No. 1 vertical belt conveyor. The discharge end of the No. 2 extended belt conveyor is connected to the feed end of the No. 2 vertical belt conveyor, and the discharge end of the No. 4 extended belt conveyor is connected to the feed end of the No. 2 extended belt conveyor. The No. 2 vertical belt conveyor is used to transfer the excavated soil from the No. 2 and No. 4 tunnel boring machines to the No. 2 vertical belt conveyor.

[0043] This invention relates to a tunnel muck removal method applied to a tunnel muck removal system. The method involves interrupting the tunnel line in the middle, excavating to the left using a first shield tunneling machine (TBM), and to the right using a second TBM, thereby achieving bidirectional synchronous excavation of the subway tunnel. The muck excavated by the first TBM is unloaded onto a first left-side extended conveyor belt, while the muck excavated by the second TBM is unloaded onto a second right-side extended conveyor belt. The muck is then transported via the first left-side and first right-side extended conveyor belts to the working shaft at the tunnel entrance. From there, a vertical conveyor belt in the working shaft lifts the muck to the surface for dumping. This method achieves bidirectional excavation and muck removal for the subway tunnel, significantly improving tunnel excavation efficiency and shortening the construction period compared to unidirectional excavation and muck removal techniques. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0045] Figure 1 This is a schematic flowchart of an embodiment of the tunnel muck removal method of the present invention;

[0046] Figure 2 This is a schematic flowchart of an embodiment of the tunnel muck removal method of the present invention;

[0047] Figure 3 This is a schematic flowchart of an embodiment of the tunnel muck removal method of the present invention.

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0051] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0052] In subway tunnel excavation projects, because subway lines often require two lanes in both directions, twin-tunnel excavation is necessary. Currently, the typical arrangement for muck removal in subway tunnels is as follows: two tunnel boring machines (TBMs) are placed at the starting or ending point of the subway line, and both TBMs excavate in the same direction. Rail transport is used inside the tunnels to transport muck laterally to the tunnel entrances, where vertical lifting mechanisms are then installed to lift the muck to the surface. This method is inefficient for long subway tunnels, such as intercity subway tunnels, resulting in low construction and muck removal efficiency and excessively long project durations.

[0053] Therefore, referring to Figure 1 This invention proposes a method for muck removal in tunnels, comprising the following steps:

[0054] S10: The No. 1 tunnel boring machine will excavate from the No. 1 working shaft, located in the middle of the pre-planned subway line, in the first direction towards the pre-planned subway line; the No. 2 tunnel boring machine will excavate from the No. 2 working shaft, located in the middle of the pre-planned subway line, in the second direction towards the pre-planned subway line; wherein, the tail of the No. 1 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft, and the tail of the No. 2 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft;

[0055] S20: Transfer the excavated soil from the No. 1 shield tunneling machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and transport it to the ground by the No. 2 vertical conveyor belt.

[0056] The planned subway line, also known as the pre-excavated subway line, runs from the starting point through various stations to the end point. This tunnel muck removal method is applicable to long tunnel excavation projects, such as intercity tunnels, which extend from one city to another. Given the length of these routes, using a tunnel boring machine (TBM) for unidirectional excavation and muck removal would often result in excessively long project durations. The technical solution of this invention involves excavating a No. 1 working shaft and a No. 2 working shaft at intervals along the middle of the pre-excavated subway line before using a TBM. A connecting tunnel is excavated at the bottom of the No. 1 and No. 2 working shafts to connect them. Then, a vertical lifting mechanism can be used to hoist the TBM and other necessary equipment into the bottom of the No. 1 and No. 2 working shafts.

[0057] Before proceeding to step S10, the following steps are also included:

[0058] S11: Place the shield body of the No. 1 tunnel boring machine in the No. 1 working shaft, and assemble the No. 1 tunnel boring machine into several sections of trolley.

[0059] S12: Place the shield of the No. 2 tunnel boring machine in the No. 2 working shaft, and assemble the No. 2 tunnel boring machine into several sections of trolley.

[0060] The tunnel boring machine (TBM) trolley is a major component of the TBM, typically consisting of 5-7 sections. The trolley primarily stores the TBM's auxiliary facilities, such as the operator's cab, power system, hydraulic system, excavation transport system, and grouting system. Therefore, after the trolleys for TBMs No. 1 and No. 2 are assembled, the TBM body has a certain length. The shield of TBM No. 1 is positioned in the No. 1 working shaft, facing the first direction of the planned subway line. When the length of the trolley assembled by TBM No. 1 is less than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of TBM No. 1 extends into the connecting tunnel between the two shafts. When the length of the trolley assembled by TBM No. 1 is greater than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of TBM No. 1 extends into the No. 2 working shaft. The shield of the No. 2 tunnel boring machine (TBM) is located inside the No. 2 working shaft and positioned facing the second direction of the planned subway line. Since subway lines often require two lanes in both directions, the No. 2 and No. 1 TBMs are arranged parallel and staggered. The No. 1 TBM is located in the first lane, and the No. 2 TBM is located in the second lane, parallel to the first lane, to prevent interference between the bodies of the No. 2 and No. 1 TBMs. The first direction is the direction from the middle of the planned subway line towards the starting point, and the second direction is the direction from the middle of the planned subway line towards the ending point. When the length of the trolley assembled by the No. 2 TBM is less than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of the No. 2 TBM extends into the connecting tunnel between the two working shafts. When the length of the trolley assembled by the No. 2 TBM is greater than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of the No. 2 TBM extends into the No. 1 working shaft.

[0061] It should be noted that the number of trolleys assembled by the No. 1 and No. 2 tunnel boring machines can be the same, such as assembling five trolleys at the same time, or they can be different, such as assembling five trolleys for the No. 1 tunnel boring machine and assembling six trolleys for the No. 2 tunnel boring machine, as long as the space at the bottom of the working shaft meets the assembly requirements.

[0062] Reference Figure 2 Before proceeding to step S10, the following steps are also included:

[0063] S13: Install the No. 1 vertical belt conveyor in the No. 1 working shaft and the No. 2 vertical belt conveyor in the No. 2 working shaft.

[0064] Since the feed end of the No. 1 vertical belt conveyor is opposite to the discharge end of the No. 2 tunnel boring machine, the No. 1 vertical belt conveyor is used to receive the excavated soil output by the No. 2 tunnel boring machine and lift it to the ground.

[0065] The excavated soil from TBM-1 can be transferred to TBM-2 via battery-powered vehicles, or a horizontal conveyor belt can be installed between them to transfer the excavated soil from TBM-1 to TBM-2. The method for transferring excavated soil between TBM-2 and TBM-1 is the same as that between TBM-1 and TBM-2.

[0066] In summary, the tunnel muck removal method of this invention interrupts the planned subway line in the middle section through working shafts No. 1 and No. 2. A tunnel boring machine (TBM) No. 1 excavates from working shaft No. 1 in the middle of the planned subway line in a first direction, while a tunnel boring machine (TBM No. 2) excavates from working shaft No. 2 in the middle of the planned subway line in a second direction. The muck excavated by TBM No. 1 is transferred to vertical conveyor belt No. 2 in working shaft No. 2 and then transported to the surface. Similarly, the muck excavated by TBM No. 2 is transferred to vertical conveyor belt No. 1 in working shaft No. 1 and then transported to the surface. This allows for bidirectional excavation and muck removal simultaneously in the middle of the planned subway line, towards both the starting and ending points, improving the excavation and muck removal speed of the subway tunnel and thus shortening the project duration.

[0067] Furthermore, refer to Figure 3 After the step of using the No. 1 tunnel boring machine to excavate from the No. 1 working shaft located in the middle of the pre-set subway line towards the pre-set subway line in a first direction, the method further includes:

[0068] S30: When the body of the No. 1 shield machine has completely entered the tunnel it is excavating, the No. 3 shield machine is used to excavate from the No. 2 working shaft located in the middle of the subway pre-set line towards the second direction of the subway pre-set line. The No. 1 shield machine and the No. 3 shield machine excavate the first lane of the subway pre-set line in both directions; wherein, the tail of the No. 3 shield machine is located in the connecting tunnel between the No. 1 working shaft and the No. 2 working shaft or in the No. 1 working shaft;

[0069] S40: The excavated soil from the No. 1 shield tunneling machine and the No. 3 shield tunneling machine are respectively transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transported to the ground by the No. 1 vertical conveyor belt.

[0070] It is not difficult to understand that when the No. 1 tunnel boring machine is fully driven into the tunnel it is excavating, the space of the connecting tunnel between the No. 1 and No. 2 working shafts is freed up, and there is space in the first lane to install the No. 3 tunnel boring machine.

[0071] Therefore, the following steps are included before step S30:

[0072] S31: Place the shield of the No. 3 tunnel boring machine into the No. 2 working shaft, and assemble the No. 3 tunnel boring machine into several sections of trolley.

[0073] The number of trolleys assembled by the No. 3 tunnel boring machine is determined by the underground space of the No. 1 and No. 2 working shafts. When the length of the trolleys assembled by the No. 3 tunnel boring machine is less than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of the No. 3 tunnel boring machine extends into the connecting tunnel between the No. 1 and No. 2 working shafts. When the length of the trolleys assembled by the No. 3 tunnel boring machine is greater than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of the No. 3 tunnel boring machine extends into the No. 1 working shaft.

[0074] In this embodiment, the No. 1 tunnel boring machine (TBM) excavates in the first direction of the first lane, and the No. 3 TBM excavates in the second direction of the first lane. At this time, the feed end of the No. 1 vertical conveyor belt is opposite to the discharge ends of both the No. 1 and No. 3 TBMs. The No. 1 vertical conveyor belt can be used to receive the excavated soil from the No. 1 and No. 3 TBMs and lift the soil to the ground, thereby improving the utilization rate of the No. 1 vertical conveyor belt.

[0075] Among them, the No. 1 and No. 3 tunnel boring machines can be connected to the No. 1 vertical conveyor belt via battery-powered vehicles to transfer the excavated soil output by the No. 1 and No. 3 tunnel boring machines to the No. 1 vertical conveyor belt.

[0076] In one embodiment, an extension conveyor belt is provided between the No. 1 shield tunneling machine / No. 3 shield tunneling machine and the No. 1 vertical conveyor belt, through which the excavated soil output by the No. 1 shield tunneling machine and the No. 3 shield tunneling machine is transferred to the No. 1 vertical conveyor belt.

[0077] Then, step S40, which involves transferring the excavated soil from the No. 1 shield tunneling machine and the No. 3 shield tunneling machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then having the No. 1 vertical conveyor belt transport the soil to the ground, includes:

[0078] S41: The excavated soil from the No. 1 shield tunneling machine is unloaded to the No. 1 extension belt conveyor connected to the tail of the No. 1 shield tunneling machine. The excavated soil from the No. 1 shield tunneling machine is then transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 1 extension belt conveyor, and then transported to the ground by the No. 1 vertical belt conveyor.

[0079] S42: The excavated soil from the No. 3 tunnel boring machine is unloaded onto the No. 3 extension conveyor belt connected to the tail of the No. 3 tunnel boring machine. The excavated soil from the No. 3 tunnel boring machine is then transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft via the No. 3 extension conveyor belt, and then transported to the ground by the No. 1 vertical conveyor belt.

[0080] An extended belt conveyor is a conventional belt conveyor with an added telescopic mechanism, allowing it to extend and retract freely along its length. The tail end of the extended belt conveyor is fixedly connected to the tail trolley of the tunnel boring machine (TBM), while the head end is fixedly installed at the tunnel entrance. The conveyor belt of the extended belt conveyor transports materials from the tail end to the head end. The feed end of the extended belt conveyor is located at the tail end, and the discharge end is located at the head end. During the movement of the TBM's tail trolley, a pulling force is applied to the tail end of the extended belt conveyor to extend it, ensuring that the discharge end of the rear-mounted belt conveyor remains connected to the feed end of the extended belt conveyor throughout the TBM's movement.

[0081] Specifically, in this embodiment, a No. 1 extension conveyor is installed between the No. 1 shield tunneling machine and the No. 1 vertical conveyor. The feed end of the No. 1 extension conveyor is connected to the discharge end of the No. 1 shield tunneling machine, and the discharge end of the No. 1 extension conveyor is connected to the feed end of the No. 1 vertical conveyor. Similarly, a No. 3 extension conveyor is installed between the No. 3 shield tunneling machine and the No. 1 vertical conveyor. The feed end of the No. 3 extension conveyor is connected to the discharge end of the No. 3 shield tunneling machine, and the discharge end of the No. 3 extension conveyor is connected to the feed end of the No. 1 vertical conveyor. The excavated soil from the No. 1 shield tunneling machine is unloaded onto the No. 1 extension conveyor, and the excavated soil from the No. 3 shield tunneling machine is also unloaded onto the No. 3 extension conveyor. The No. 1 and No. 3 extension conveyors together transfer the excavated soil to the No. 1 vertical conveyor, which then transports the excavated soil to the surface. As a result, the excavated soil from the No. 1 and No. 3 tunnel boring machines is horizontally transported via the No. 1 and No. 3 extension belt conveyors, and then vertically transported via the No. 1 vertical belt conveyor, which improves the excavation efficiency of the first lane.

[0082] Furthermore, in step S41, the excavated soil from the No. 1 tunnel boring machine is unloaded onto the No. 1 extension conveyor belt connected to the tail of the No. 1 tunnel boring machine. The excavated soil is then transferred via the No. 1 extension conveyor belt to the No. 1 vertical conveyor belt located within the No. 1 working shaft, and transported to the surface by the No. 1 vertical conveyor belt. The process further includes:

[0083] S411: Determine whether the No. 1 tunnel boring machine has tunneled to the first preset depth;

[0084] S412: If so, dismantle the No. 1 extended belt conveyor and install the No. 1 continuous belt conveyor to replace the No. 1 extended belt conveyor. The excavated soil from the No. 1 tunnel boring machine is transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 1 continuous belt conveyor.

[0085] Understandably, in the early stages of tunnel excavation, the space at the bottom of the working shaft is limited, allowing only shorter, simpler extended conveyor belts to be installed. Once the tunnel boring machine has excavated a longer tunnel, there is sufficient space inside to install longer continuous conveyor belts to meet the needs of transporting excavated soil. The difference between continuous and extended conveyor belts is that continuous conveyor belts use a storage bin structure, resulting in a longer storage belt, a larger footprint, and higher conveying efficiency.

[0086] When the No. 1 tunnel boring machine (TBM) reaches the first preset depth, such as 240 meters, the length of the No. 1 extension conveyor belt reaches its maximum value. If there is enough space in the tunnel excavated by the No. 1 TBM to install the No. 1 continuous conveyor belt, the No. 1 extension conveyor belt is removed and replaced by the No. 1 continuous conveyor belt. The excavated soil from the No. 1 TBM is then transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft via the No. 1 continuous conveyor belt, in order to accommodate the No. 1 TBM to excavate deeper tunnels and remove excavated soil.

[0087] In step S42, the excavated soil from the No. 3 tunnel boring machine is unloaded onto the No. 3 extension conveyor belt connected to the tail of the No. 3 tunnel boring machine. The excavated soil is then transferred via the No. 3 extension conveyor belt to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and transported to the surface by the No. 1 vertical conveyor belt. The process further includes:

[0088] S421: Determine whether the No. 3 tunnel boring machine has tunneled to the third predetermined depth;

[0089] S422: If so, dismantle the No. 3 extension belt conveyor and install the No. 3 continuous belt conveyor to replace the No. 3 extension belt conveyor. The excavated soil from the No. 3 tunnel boring machine is then transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 3 continuous belt conveyor.

[0090] When the No. 3 tunnel boring machine (TBM) reaches the third preset depth, such as 240 meters, the length of the No. 3 extension conveyor belt reaches its maximum value. If there is enough space in the tunnel excavated by the No. 3 TBM to install the No. 3 continuous conveyor belt, then the No. 3 extension conveyor belt is removed and replaced by the No. 3 continuous conveyor belt. The excavated soil from the No. 3 TBM is then transported to the No. 1 vertical conveyor belt located in the No. 1 working shaft via the No. 3 continuous conveyor belt, in order to accommodate the No. 3 TBM to excavate deeper tunnels and remove excavated soil.

[0091] Furthermore, refer to Figure 3 After the step of using the No. 2 tunnel boring machine to excavate from the No. 2 working shaft located in the middle of the pre-set subway line in a second direction toward the pre-set subway line, the method further includes:

[0092] S50: When the body of the No. 2 shield machine has completely entered the tunnel it is excavating, the No. 4 shield machine is used to excavate from the No. 1 working shaft located in the middle of the subway pre-set line towards the first direction of the subway pre-set line, and the No. 2 shield machine and the No. 4 shield machine excavate the second lane of the subway pre-set line in both directions; wherein, the tail of the No. 4 shield machine is located in the connecting tunnel between the No. 1 working shaft and the No. 2 working shaft or is located in the No. 2 working shaft;

[0093] S60: The excavated soil from the No. 2 shield tunneling machine and the No. 4 shield tunneling machine are respectively transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt.

[0094] It is not hard to understand that when the No. 2 tunnel boring machine is fully driven into the tunnel it is excavating, the space of the connecting tunnel between the No. 1 and No. 2 working shafts is freed up, and there is space in the second lane to install the No. 4 tunnel boring machine.

[0095] Therefore, the following steps are included before step S50:

[0096] S51: Place the shield of the No. 4 tunnel boring machine in the No. 1 working shaft, and assemble the No. 4 tunnel boring machine into several sections of trolley.

[0097] The number of trolleys assembled by the No. 4 shield tunneling machine is determined by the underground space of the No. 1 and No. 2 working shafts. When the length of the trolleys assembled by the No. 4 shield tunneling machine is less than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of the No. 4 shield tunneling machine extends into the connecting tunnel between the No. 1 and No. 2 working shafts. When the length of the trolleys assembled by the No. 4 shield tunneling machine is greater than the length of the connecting tunnel between the No. 1 and No. 2 working shafts, the tail of the No. 3 shield tunneling machine extends into the No. 2 working shaft.

[0098] In this embodiment, the No. 2 tunnel boring machine (TBM) excavates in the second direction of the second lane, while the No. 4 TBM excavates in the first direction of the second lane. At this time, the feed end of the No. 2 vertical belt conveyor is simultaneously opposite to the discharge ends of both the No. 2 and No. 4 TBMs. The No. 2 vertical belt conveyor can be used to receive the excavated soil from the No. 2 and No. 4 TBMs and lift the soil to the ground, thereby improving the utilization rate of the No. 2 vertical belt conveyor.

[0099] Among them, the No. 2 and No. 4 tunnel boring machines can be connected to the No. 2 vertical conveyor belt via battery-powered vehicles to transfer the excavated soil output by the No. 2 and No. 4 tunnel boring machines to the No. 2 vertical conveyor belt.

[0100] In one embodiment, an extension conveyor belt is provided between the No. 2 shield tunneling machine / No. 4 shield tunneling machine and the No. 2 vertical conveyor belt, through which the excavated soil output by the No. 2 shield tunneling machine and the No. 4 shield tunneling machine is transferred to the No. 2 vertical conveyor belt.

[0101] Then, step S60, which involves transferring the excavated soil from the No. 2 shield tunneling machine and the No. 4 shield tunneling machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then having the No. 2 vertical conveyor belt transport the soil to the ground, includes:

[0102] S61: The excavated soil from the No. 2 shield tunneling machine is unloaded onto the No. 2 extension belt conveyor connected to the tail of the No. 2 shield tunneling machine. The excavated soil from the No. 2 shield tunneling machine is then transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 2 extension belt conveyor, and then transported to the ground by the No. 2 vertical belt conveyor.

[0103] S62: The excavated soil from the No. 4 shield tunneling machine is unloaded onto the No. 4 extension conveyor belt connected to the tail of the No. 4 shield tunneling machine. The excavated soil from the No. 4 shield tunneling machine is then transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 4 extension conveyor belt, and then transported to the ground by the No. 2 vertical conveyor belt.

[0104] A No. 2 extension conveyor is installed between the No. 2 tunnel boring machine (TBM) and the No. 2 vertical conveyor. The feed end of the No. 2 extension conveyor is connected to the discharge end of the No. 2 TBM, and the discharge end of the No. 2 extension conveyor is connected to the feed end of the No. 2 vertical conveyor. Similarly, a No. 4 extension conveyor is installed between the No. 4 TBM and the No. 2 vertical conveyor. The feed end of the No. 4 extension conveyor is connected to the discharge end of the No. 4 TBM, and the discharge end of the No. 4 extension conveyor is connected to the feed end of the No. 2 vertical conveyor. The excavated soil from the No. 2 TBM is unloaded onto the No. 2 extension conveyor, and the excavated soil from the No. 4 TBM is unloaded onto the No. 4 extension conveyor. The No. 2 and No. 4 extension conveyors together transfer the excavated soil to the No. 2 vertical conveyor, which then transports the excavated soil to the surface. As a result, the excavated soil from the No. 2 and No. 4 tunnel boring machines is horizontally transported via the No. 2 and No. 4 extension belt conveyors, and then vertically transported via the No. 2 vertical belt conveyor, which improves the excavation efficiency of the second lane.

[0105] Furthermore, after unloading the excavated soil from the No. 2 shield tunneling machine into the No. 2 extension conveyor belt connected to the tail of the No. 2 shield tunneling machine in step S61, and transferring the excavated soil from the No. 2 shield tunneling machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 2 extension conveyor belt, the process further includes:

[0106] S611: Determine whether the No. 2 tunnel boring machine has tunneled to the second preset depth;

[0107] S612: If so, dismantle the No. 2 extension belt conveyor and install the No. 2 continuous belt conveyor to replace the No. 2 extension belt conveyor. The excavated soil from the No. 2 tunnel boring machine is transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 2 continuous belt conveyor.

[0108] When the No. 2 tunnel boring machine (TBM) reaches the second preset depth, such as 240 meters, the length of the No. 2 extension conveyor belt reaches its maximum value. If there is enough space in the tunnel excavated by the No. 2 TBM to install the No. 2 continuous conveyor belt, then the No. 2 extension conveyor belt is dismantled and replaced by the No. 2 continuous conveyor belt. The excavated soil from the No. 2 TBM is then transported to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 2 continuous conveyor belt, in order to accommodate the No. 2 TBM to excavate deeper tunnels and remove excavated soil.

[0109] In step S62, after unloading the excavated soil from the No. 4 tunnel boring machine to the No. 4 extension conveyor belt connected to the tail of the No. 4 tunnel boring machine, and then transferring the excavated soil from the No. 4 tunnel boring machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 4 extension conveyor belt, the process further includes:

[0110] Determine whether the No. 4 tunnel boring machine has tunneled to the fourth predetermined depth;

[0111] If so, the No. 4 extension belt conveyor will be dismantled and replaced by the No. 4 continuous belt conveyor. The excavated soil from the No. 4 tunnel boring machine will be transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 4 continuous belt conveyor.

[0112] When the No. 4 tunnel boring machine (TBM) reaches the second preset depth, such as 240 meters, the length of the No. 4 extension conveyor belt reaches its maximum value. If there is enough space in the tunnel excavated by the No. 4 TBM to install the No. 4 continuous conveyor belt, then the No. 4 extension conveyor belt is removed and replaced by the No. 4 continuous conveyor belt. The excavated soil from the No. 4 TBM is then transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 4 continuous conveyor belt, in order to accommodate the No. 4 TBM to excavate deeper tunnels and remove excavated soil.

[0113] The present invention also proposes a tunnel muck removal system, which uses the tunnel muck removal method described above for muck removal. The specific steps of the tunnel muck removal method are as described in the above embodiments. Since the tunnel muck removal system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0114] The tunnel muck removal system includes a No. 1 tunnel boring machine (TBM) and a No. 2 tunnel boring machine. The shield of the No. 1 TBM is located in the No. 1 working shaft in the middle of the planned subway line, and the shield of the No. 2 TBM is located in the No. 2 working shaft in the middle of the planned subway line. The No. 1 TBM and the No. 2 TBM have a first state in which they have not fully entered the tunnel they are excavating and a second state in which they have fully entered the tunnel they are excavating.

[0115] When the No. 1 tunnel boring machine is in the first state, its tail end is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft. When the No. 2 tunnel boring machine is in the first state, its tail end is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft. The tunnel muck removal system also includes a No. 1 vertical belt conveyor and a No. 2 vertical belt conveyor. The No. 1 vertical belt conveyor is located in the No. 1 working shaft, and the No. 2 vertical belt conveyor is located in the No. 2 working shaft. When the No. 1 and No. 2 tunnel boring machines are in the first state, the No. 1 vertical belt conveyor is used to transport the muck excavated by the No. 2 tunnel boring machine to the surface, and the No. 2 vertical belt conveyor is used to transport the muck excavated by the No. 1 tunnel boring machine to the surface.

[0116] When the No. 1 and No. 2 tunnel boring machines are in the second state, the tunnel muck removal system also includes a No. 3 and a No. 4 tunnel boring machine. The shield body of the No. 3 tunnel boring machine is located in the No. 2 working shaft in the middle of the planned subway line. The tail of the No. 3 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft. The No. 3 tunnel boring machine and the No. 1 tunnel boring machine are located in the first lane of the planned subway line and are positioned opposite each other. The shield body of the No. 4 tunnel boring machine is located in the No. 2 working shaft in the middle of the planned subway line. The tail of the No. 4 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft. The No. 4 tunnel boring machine and the No. 2 tunnel boring machine are located in the second lane of the planned subway line and are positioned opposite each other.

[0117] When the No. 1 and No. 2 tunnel boring machines are in the second state, the No. 1 vertical conveyor belt is used to transport the excavated soil from the No. 1 and No. 3 tunnel boring machines to the ground, and the No. 2 vertical conveyor belt is used to transport the excavated soil from the No. 2 and No. 4 tunnel boring machines to the ground.

[0118] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for muck removal in tunnels, characterized in that, Includes the following steps: The No. 1 tunnel boring machine will excavate from the No. 1 working shaft, located in the middle of the planned subway line, towards the first direction of the planned subway line. The No. 2 tunnel boring machine will excavate from the No. 2 working shaft, located in the middle of the planned subway line, towards the second direction of the planned subway line. The tail of the No. 1 tunnel boring machine will be located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft. The excavated soil from the No. 1 shield tunneling machine is transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt. When the body of the No. 1 tunnel boring machine has completely entered the tunnel it is excavating, the No. 3 tunnel boring machine will be used to excavate from the No. 2 working shaft located in the middle of the subway pre-set line in the second direction towards the subway pre-set line. The No. 1 and No. 3 tunnel boring machines will excavate the first lane of the subway pre-set line in both directions. The tail of the No. 3 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft. The excavated soil from the No. 1 shield tunneling machine and the No. 3 shield tunneling machine were respectively transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transported to the ground by the No. 1 vertical conveyor belt. After the step of using the No. 2 tunnel boring machine to excavate from the No. 2 working shaft located in the middle of the planned subway line in a second direction toward the planned subway line, the method further includes: When the body of the No. 2 tunnel boring machine is fully driven into the tunnel it is excavating, the No. 4 tunnel boring machine will be used to excavate from the No. 1 working shaft located in the middle of the subway line towards the first direction of the subway line. The No. 2 and No. 4 tunnel boring machines will excavate the second lane of the subway line in both directions. The tail of the No. 4 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft. The excavated soil from the No. 2 and No. 4 tunnel boring machines were respectively transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt.

2. The tunnel muck removal method as described in claim 1, characterized in that, The steps of transferring the excavated soil from the No. 1 tunnel boring machine and the No. 3 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transporting it to the ground by the No. 1 vertical conveyor belt, include: The excavated soil from the No. 1 shield tunneling machine is unloaded onto the No. 1 extension conveyor belt connected to the tail of the No. 1 shield tunneling machine. The excavated soil from the No. 1 shield tunneling machine is then transferred to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transported to the ground by the No. 1 vertical conveyor belt. The excavated soil from the No. 3 tunnel boring machine is unloaded onto the No. 3 extension conveyor belt connected to the tail of the No. 3 tunnel boring machine. The No. 3 extension conveyor belt then transfers the excavated soil from the No. 3 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then the No. 1 vertical conveyor belt transports it to the ground.

3. The tunnel muck removal method as described in claim 2, characterized in that, After the steps of unloading the excavated soil from the No. 1 tunnel boring machine to the No. 1 extension conveyor belt connected to the tail of the No. 1 tunnel boring machine, transferring the excavated soil from the No. 1 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft via the No. 1 extension conveyor belt, and then transporting it to the ground via the No. 1 vertical conveyor belt, the method further includes: Determine whether the No. 1 tunnel boring machine has tunneled to the first predetermined depth; If so, the No. 1 extension belt conveyor will be dismantled and replaced by the No. 1 continuous belt conveyor. The excavated soil from the No. 1 tunnel boring machine will be transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 1 continuous belt conveyor. After the steps of unloading the excavated soil from the No. 3 tunnel boring machine to the No. 3 extension conveyor belt connected to the tail of the No. 3 tunnel boring machine, and then transferring the excavated soil from the No. 3 tunnel boring machine to the No. 1 vertical conveyor belt located in the No. 1 working shaft, and then transporting it to the surface by the No. 1 vertical conveyor belt belt, the method further includes: Determine whether the No. 3 tunnel boring machine has tunneled to the third predetermined depth; If so, the No. 3 extension belt conveyor will be dismantled and replaced by the No. 3 continuous belt conveyor. The excavated soil from the No. 3 tunnel boring machine will be transferred to the No. 1 vertical belt conveyor located in the No. 1 working shaft via the No. 3 continuous belt conveyor.

4. The tunnel muck removal method as described in claim 3, characterized in that, The steps of transferring the excavated soil from the No. 2 shield tunneling machine and the No. 4 shield tunneling machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transporting it to the ground by the No. 2 vertical conveyor belt, include: The excavated soil from the No. 2 shield tunneling machine is unloaded onto the No. 2 extension conveyor belt connected to the tail of the No. 2 shield tunneling machine. The excavated soil from the No. 2 shield tunneling machine is then transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and transported to the ground by the No. 2 vertical conveyor belt. The excavated soil from the No. 4 tunnel boring machine is unloaded onto the No. 4 extension conveyor belt connected to the tail of the No. 4 tunnel boring machine. The excavated soil from the No. 4 tunnel boring machine is then transferred to the No. 2 vertical conveyor belt located in the No. 2 working shaft, and then transported to the ground by the No. 2 vertical conveyor belt.

5. The tunnel muck removal method as described in claim 4, characterized in that, After the steps of unloading the excavated soil from the No. 2 tunnel boring machine to the No. 2 extension conveyor belt connected to the tail of the No. 2 tunnel boring machine, and then transferring the excavated soil from the No. 2 tunnel boring machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 2 extension conveyor belt, the method further includes: Determine whether the No. 2 tunnel boring machine has tunneled to the second predetermined depth; If so, dismantle the No. 2 extension belt conveyor and install the No. 2 continuous belt conveyor to replace the No. 2 extension belt conveyor. The excavated soil from the No. 2 tunnel boring machine will be transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 2 continuous belt conveyor. After the step of unloading the excavated soil from the No. 4 tunnel boring machine to the No. 4 extension conveyor belt connected to the tail of the No. 4 tunnel boring machine, and then transferring the excavated soil from the No. 4 tunnel boring machine to the No. 2 vertical conveyor belt located in the No. 2 working shaft via the No. 4 extension conveyor belt, the method further includes: Determine whether the No. 4 tunnel boring machine has tunneled to the fourth predetermined depth; If so, the No. 4 extension belt conveyor will be dismantled and replaced by the No. 4 continuous belt conveyor. The excavated soil from the No. 4 tunnel boring machine will be transferred to the No. 2 vertical belt conveyor located in the No. 2 working shaft via the No. 4 continuous belt conveyor.

6. A tunnel muck removal system, employing the tunnel muck removal method according to any one of claims 1-5, the tunnel muck removal system comprising a No. 1 tunnel boring machine (TBM) and a No. 2 tunnel boring machine, wherein the shield body of the No. 1 TBM is located in a No. 1 working shaft in the middle of the predetermined subway line, and the shield body of the No. 2 TBM is located in a No. 2 working shaft in the middle of the predetermined subway line; wherein, The No. 1 tunnel boring machine and the No. 2 tunnel boring machine have a first state in which they have not fully entered the tunnel they are excavating and a second state in which they have fully entered the tunnel they are excavating. When the No. 1 shield machine is in the first state, the tail of the No. 1 shield machine is located in the connecting tunnel between the No. 1 working shaft and the No. 2 working shaft or in the No. 2 working shaft. When the No. 2 shield machine is in the first state, the tail of the No. 2 shield machine is located in the connecting tunnel between the No. 1 working shaft and the No. 2 working shaft or in the No. 1 working shaft. The tunnel muck removal system also includes a No. 1 vertical belt conveyor and a No. 2 vertical belt conveyor. The No. 1 vertical belt conveyor is located in the No. 1 working shaft, and the No. 2 vertical belt conveyor is located in the No. 2 working shaft. When the No. 1 shield machine and the No. 2 shield machine are in the first state, the No. 1 vertical belt conveyor is used to transport the muck excavated by the No. 2 shield machine to the ground, and the No. 2 vertical belt conveyor is used to transport the muck excavated by the No. 1 shield machine to the ground. When the No. 1 shield machine and the No. 2 shield machine are in the second state, the tunnel muck removal system also includes the No. 3 shield machine and the No. 4 shield machine; The shield of the No. 3 tunnel boring machine is located in the No. 2 working shaft in the middle of the planned subway line. The tail of the No. 3 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 1 working shaft. The No. 3 tunnel boring machine and the No. 1 tunnel boring machine are located in the first lane of the planned subway line and are set in opposite directions. The shield body of the No. 4 tunnel boring machine is located in the No. 1 working shaft in the middle of the planned subway line. The tail of the No. 4 tunnel boring machine is located in the connecting tunnel between the No. 1 and No. 2 working shafts or in the No. 2 working shaft. The No. 4 tunnel boring machine and the No. 2 tunnel boring machine are located in the second lane of the planned subway line and are set in opposite directions. When the No. 1 and No. 2 tunnel boring machines are in the second state, the No. 1 vertical conveyor belt is used to transport the excavated soil from the No. 1 and No. 3 tunnel boring machines to the ground, and the No. 2 vertical conveyor belt is used to transport the excavated soil from the No. 2 and No. 4 tunnel boring machines to the ground.

7. The tunnel muck removal system as described in claim 6, characterized in that, When the No. 1 shield machine and the No. 2 shield machine are in the first state, the tunnel muck removal system also includes a No. 1 extension belt conveyor and a No. 2 extension belt conveyor. The feed end of the No. 1 extension belt conveyor is connected to the discharge end of the No. 1 shield machine, and the feed end of the No. 2 extension belt conveyor is connected to the discharge end of the No. 2 shield machine. At this time, the discharge end of the No. 1 extended belt conveyor is connected to the discharge end of the No. 2 vertical belt conveyor, and the No. 1 extended belt conveyor is used to transfer the excavated soil from the No. 1 tunnel boring machine to the No. 2 vertical belt conveyor; the discharge end of the No. 2 extended belt conveyor is connected to the feed end of the No. 1 vertical belt conveyor, and the No. 2 extended belt conveyor is used to transfer the excavated soil from the No. 2 tunnel boring machine to the No. 1 vertical belt conveyor. When the No. 1 shield machine and the No. 2 shield machine are in the second state, the tunnel muck removal system also includes a No. 3 extension belt conveyor and a No. 4 extension belt conveyor. The feed end of the No. 3 extension belt conveyor is connected to the discharge end of the No. 3 shield machine, and the feed end of the No. 4 extension belt conveyor is connected to the discharge end of the No. 4 shield machine. At this time, the discharge end of the No. 1 extended belt conveyor is connected to the feed end of the No. 1 vertical belt conveyor, and the discharge end of the No. 3 extended belt conveyor is connected to the feed end of the No. 1 vertical belt conveyor. The No. 1 vertical belt conveyor is used to transfer the excavated soil from the No. 1 and No. 3 tunnel boring machines to the No. 1 vertical belt conveyor. The discharge end of the No. 2 extended belt conveyor is connected to the feed end of the No. 2 vertical belt conveyor, and the discharge end of the No. 4 extended belt conveyor is connected to the feed end of the No. 2 extended belt conveyor. The No. 2 vertical belt conveyor is used to transfer the excavated soil from the No. 2 and No. 4 tunnel boring machines to the No. 2 vertical belt conveyor.

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