CN111997631A

CN111997631A - Tunnel construction method and shield tunneling machine

Info

Publication number: CN111997631A
Application number: CN202011095493.3A
Authority: CN
Inventors: 阴书玉; 袁文征; 贺开伟; 郑康泰; 张伟强; 徐儒村; 苏志学
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2020-11-27

Abstract

The invention provides a tunnel construction method and a shield machine, wherein the construction method comprises a muddy water crushing mode and an earth pressure mode, and in the earth pressure mode, dregs sequentially pass through a screw conveyor and a belt conveyor to be discharged; under the muddy water crushing mode, mud enters the soil bin of the shield body through the slurry inlet pipe, and then carries dregs to sequentially pass through the screw conveyor, the crusher and the slurry discharge pipe for deslagging. This shield constructs machine includes the shield body, and the shield is internal to be equipped with muddy water balanced system and soil pressure balanced system, and soil pressure balanced system includes screw conveyer, screw conveyer and breaker can dismantle and be connected, screw conveyer's rear end storage has the belt feeder. The invention has the beneficial effects that: the shield machine can realize high-efficiency soil pressure tunneling in a low water pressure stratum by carrying out mode switching (namely removing the crusher and an auxiliary pipeline thereof and installing a belt conveyor); meanwhile, on the basis of the soil pressure mode, the soil pressure mode can be switched to the straight-discharge-pipe muddy water mode for tunneling.

Description

Tunnel construction method and shield tunneling machine

Technical Field

The invention relates to tunnel construction equipment, in particular to a tunnel construction method and a shield machine.

Background

With the increasing number of tunnel constructions in China, the shield machine with a single mode cannot completely meet the increasing requirements of complex and changeable geological construction. The slurry shield machine is widely applied to complex strata such as high water pressure (more than 3 bar) mud burst and water burst by virtue of the advantages of safe construction, good surface subsidence control and the like, however, when a large number of large-diameter pebble broken zones exist in an excavated tunnel, large pebbles cannot be directly discharged from a slurry pipeline, and the slurry shield machine is likely to have adverse phenomena such as warehouse blockage, stagnation and discharge.

For the situation, at present, no good solution is provided, and usually constructors can only enter a warehouse to process the cobbles, so that the construction efficiency and safety are greatly influenced. Meanwhile, compared with a slurry shield machine, the earth shield machine is widely applied to low-pressure strata (less than 3 bar) by virtue of high tunneling efficiency, low construction cost and the like. Aiming at complicated and changeable geology such as an uncertain water pressure in a tunneling region, a large number of pebble broken zones and the like, a muddy water double-channel shield machine with an earth pressure function needs to be designed urgently.

For example, the invention patent application with the name of 'dual-mode heading machine' and the application number of 2015102617068 discloses a muddy water dual-mode shield machine which can not realize the heading under the soil pressure mode, limits the tunneling mode and influences the tunneling efficiency.

Disclosure of Invention

The invention provides a tunnel construction method and a shield machine, which have the characteristics of online parallel seamless switching of an air cushion and direct discharging slurry mode and a screw machine quarrying and crusher and pipeline slurry mode, can meet the requirement of high-water-pressure stratum tunneling, can solve the problems of warehouse blockage and discharge stagnation caused by crushed stratum, large-diameter pebbles and the like, and can meet the requirement of rapid tunneling of an earth pressure mode through mode switching.

The technical scheme of the invention is realized as follows: a tunnel construction method comprises a muddy water crushing mode and a soil pressure mode, wherein when the muddy water crushing mode is switched to the soil pressure mode, a crusher is dismantled, a belt conveyor at the rear end of a spiral conveyor is installed, and residue soil is discharged through the spiral conveyor and the belt conveyor in sequence in the soil pressure mode; when the soil pressure mode is switched to the muddy water crushing mode, the belt conveyor is dismantled, the crusher at the slag discharge port of the screw conveyor is installed, under the muddy water crushing mode, slurry enters the soil bin of the shield body through the slurry inlet pipe, and then slag soil is carried to carry out slag discharge through the screw conveyor, the crusher and the slurry discharge pipe in sequence.

The device also comprises a mud-water direct discharging mode, and when the mud-water direct discharging mode is switched to a mud-water crushing mode, the screw conveyor and the crusher are started; and when the muddy water crushing mode is switched to a muddy water direct discharging mode, the screw conveyor and the crusher are closed, and under the muddy water direct discharging mode, the slurry enters the soil bin of the shield body through the slurry inlet pipe and then carries the muck to discharge the slag through the slurry discharge pipe.

The utility model provides a shield constructs machine, includes the shield body, and the shield is internal to be equipped with muddy water balanced system and soil pressure balanced system, and soil pressure balanced system includes screw conveyer, screw conveyer and breaker can dismantle and be connected, screw conveyer's rear end storage has the belt feeder.

The front end of the shield body is provided with a cutter head, and a main drive for driving the cutter head is arranged in the shield body.

The mud-water balance system comprises a mud inlet pipe and a mud discharge pipe, wherein the mud inlet pipe and the mud discharge pipe extend into the soil bin, and the crusher is communicated with the mud discharge pipe.

The slurry discharge pipes are positioned at two sides of the spiral conveyor.

The rear end of the spiral conveyor is arranged on a first trailer, and the belt conveyor is stored on the first trailer.

The front end of the spiral conveyor is connected with a spiral conveyor base on the shield body through a joint bearing, and the rear end of the spiral conveyor is connected with a first trailer through a supporting seat.

The spiral conveyor is connected with the telescopic device.

The crusher is movably matched with the first trailer.

The crusher is a jaw crusher.

The crusher is provided with a traveling wheel, the traveling wheel travels on a platform track, and the platform track is arranged on a first trailer.

The belt conveyor is stored on the upper part of the first trailer.

The front part of the shield body is provided with a soil bin, and the bottom of the soil bin is provided with a slag outlet door.

The slag discharging door is a butterfly slag discharging door.

The functions or purposes realized by the invention are as follows: the slurry-water dual-channel shield machine adopts a slurry mode of a straight-line pipeline (the slurry is discharged through the straight-line pipeline at the bottom of an excavation bin and is conveyed out of a hole through a slurry discharge pump and a slurry discharge pipe) to discharge the slurry in a small-particle homogeneous stratum, so that the slag discharging efficiency is improved, namely a first slurry-water channel; in a cobble broken zone and other composite strata, a mud-water mode of a screw conveyor stone extraction mode, a crusher stone crushing mode and a pipeline is adopted for slag discharging, namely a mud-water channel II is adopted, the problem of pipe blockage and discharge stagnation is solved, and seamless switching of two modes can be realized without disassembling and replacing any equipment.

The invention has the beneficial effects that:

the shield machine can realize high-efficiency soil pressure tunneling in a low water pressure stratum by carrying out mode switching (namely removing the crusher and an auxiliary pipeline thereof and installing a belt conveyor); meanwhile, on the basis of the soil pressure mode, the soil pressure mode can be switched to the straight-discharge-pipe muddy water mode for tunneling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a diagram of a mud-water channel-in-line tunneling mode of the invention.

FIG. 2 is a diagram of a tunneling mode of a second muddy water channel (a screw conveyor, a crusher and a slurry discharge pipe) of the invention.

Fig. 3 is a view from a-a of fig. 2.

Fig. 4 is a view from the direction B-B of fig. 2.

FIG. 5 is a tunneling mode diagram of a second muddy water channel (a screw conveyor and a belt conveyor) of the invention.

Fig. 6 is a diagram showing the muddy water crushing mode of the present invention being switched to the soil pressure mode one.

Fig. 7 is a diagram showing the mud-water crushing mode of the present invention switched to the soil pressure mode two.

Fig. 8 is a third diagram illustrating the muddy water crushing mode of the present invention being switched to the soil pressure mode.

Fig. 9 is a diagram showing the muddy water crushing mode of the present invention being switched to the soil pressure mode four.

Fig. 10 is a diagram showing the muddy water crushing mode of the present invention being switched to the soil pressure mode five.

Fig. 11 is a diagram showing the muddy water crushing mode of the present invention being switched to the soil pressure mode six.

Fig. 12 is a diagram illustrating the muddy water crushing mode of the present invention being switched to the soil pressure mode seven.

Fig. 13 is a first diagram illustrating the soil pressure mode of the present invention switched to the muddy water crushing mode.

Fig. 14 is a diagram showing the soil pressure mode of the present invention switched to the muddy water crushing mode two.

Fig. 15 is a third diagram illustrating the soil pressure mode of the present invention switched to the muddy water crushing mode.

Fig. 16 is a fourth diagram illustrating the soil pressure mode of the present invention switched to the muddy water crushing mode.

Fig. 17 is a diagram showing the soil pressure mode of the present invention switched to the muddy water crushing mode.

Fig. 18 is a sixth view showing the soil pressure mode of the present invention switched to the muddy water crushing mode.

Fig. 19 is a seventh view illustrating the soil pressure mode of the present invention switched to the muddy water crushing mode.

FIG. 20 is a diagram showing the switching of the sludge-water crushing mode to the sludge-water discharging mode in accordance with the present invention.

FIG. 21 is a diagram showing the switching of the muddy water crushing mode to the muddy water direct discharging mode.

FIG. 22 is a view showing the switching of the muddy water crushing mode to the muddy water direct discharging mode in accordance with the present invention.

FIG. 23 is a fourth diagram illustrating the mode of crushing the muddy water of the present invention being switched to the muddy water straight discharging mode.

In the figure: 1-a cutter head; 2-shield body; 3, main driving; 4-slurry inlet pipe; 5-a slurry discharge pipe; 6-a screw conveyor; 7-a crusher; 8-trailer number one; 9-belt conveyor; 10-a slag outlet door; 601-a support base; 701-a traveling wheel; 801-platform track.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

A tunnel construction method comprises a muddy water direct discharge mode, a muddy water crushing mode and a soil pressure mode.

As shown in fig. 13 to 19, when the muddy water crushing mode is switched to the soil pressure mode. As shown in fig. 13, the soil bin (in this mode, equal to the mud bin) and air cushion bin pressure fluctuation conditions were monitored. As shown in fig. 14, the slurry inlet pipe 4 and the slurry outlet pipe 5 communicate with each other through a bypass pipe, and the circulation system is switched to the bypass mode.

In order to ensure that each pipeline of the subsequent soil pressure mode-muddy water crushing mode is unobstructed, the dregs in the air cushion bin are not accumulated, and corresponding anti-blocking measures need to be taken, the concrete steps are as follows: as shown in fig. 15, the circulation system is switched from the bypass mode to the air cushion silo bottom washing mode; and monitoring the pressure fluctuation conditions of the soil bin and the air cushion bin. As shown in fig. 16, the knife gate on the communicating pipe is closed, and the soil bin and the air cushion bin communicating pipe are cut off; closing the air cushion cabin pressure maintaining system, and recovering the air cushion cabin to normal pressure; monitoring the pressure fluctuation condition of the soil bin, starting a maintenance pressure maintaining mode if necessary, properly supplementing slurry to the soil bin, and stabilizing the pressure of the soil bin; and (4) clearing away the residue soil in the air cushion bin, injecting shield tail grease into a slurry pipeline, taking anti-blocking measures and the like.

Then the shield machine starts to slowly tunnel, and the soil bin is gradually piled with slag, and the method comprises the following specific steps: as shown in fig. 17, the circulation system is switched to a slag discharge mode of the crusher slurry inlet screw conveyor, the slag discharge pipe discharges slag, and the slurry runs in a circulation manner; monitoring the pressure fluctuation condition of the soil bin, feeding slurry into the soil bin to supplement slurry if necessary, and stabilizing the pressure of the soil bin. As shown in fig. 18, the shield machine is slowly propelled, and the soil bin is slowly piled up; and opening a ball valve of an observation hole of the screw conveyer or opening a breathing tube at the top of the middle shield to observe the slurry discharge condition, ensuring that the screw conveyer is fully filled with thick residue soil to reach the standard of no slurry spraying, and injecting thick slurry if necessary. As shown in fig. 19, after the accumulation of the muck in the soil bin and the screw conveyor is completed, the screw conveyor gate is closed; disassembling the crusher 7, and installing a belt conveyor 9 with an inclined section; opening a slag outlet door, checking the condition of the guniting at the outlet of the screw conveyor, and taking a response measure; slowly rotating the shaft of the spiral conveyor to carry out belt conveyor slag tapping; and (3) completing a muddy water crushing mode to a soil pressure mode, wherein the residue soil sequentially passes through the screw conveyor 6 and the belt conveyor 9 to be discharged.

As shown in fig. 6 to 12, when the soil pressure mode is switched to the slurry crushing mode, the slurry pressure fluctuation condition is monitored, and after the slurry pressure fluctuation condition tends to be stable, each system of the shield tunneling machine stops working, the screw conveyor stops rotating, and the slag outlet door is closed. And (4) dismantling the belt conveyor 9 of the inclined section, and installing the crusher 7 and related slurry system components.

The method ensures that a circulation system pipeline, a slurry pump and related valves work normally, and a circulation system bypass mode operates normally, and comprises the following specific steps: and operating the circulation system bypass mode until the circulation system pipeline pressure, flow and the like are stable. And (3) opening a slurry inlet ball valve of the crusher, circularly running slurry in the crusher, closing the bypass ball valve after the pressure of a system pipeline is stable, and controlling the rotating speed of the pump to adjust the flow and stabilize the pressure. The cutter head rotates at a low speed; extending the shaft of the screw conveyor to the bottom of the soil bin, opening a slag discharging door, and slowly rotating the screw conveyor; monitoring the pressure fluctuation condition of the soil bin, avoiding overlarge pressure fluctuation, and controlling the slurry inlet flow and the slag outlet amount of the screw conveyor; the screw conveyer discharges slag and enters a crusher; and the circulation system runs circularly and is pumped out of the tunnel through a mud pump.

The method comprises the following steps of continuously feeding and discharging the slurry at a small flow rate, and stably replacing the residue soil of the soil bin into thick slurry: the circulation system continuously feeds the slurry with small flow, and the screw conveyor and the slurry discharging pump discharge the slurry and remove the slag; and (4) opening a ball valve through a breathing pipeline at the top of an observation port of the screw conveyor or a middle shield to observe slurry until the residue soil in the replacement soil bin is thick slurry, and judging the residue soil replacement condition. Setting a pressure value with the pressure of the air cushion bin balanced with the pressure of the soil bin through a pressure maintaining system; the circulation system adds slurry with proper liquid level into the air cushion bin; after the pressure is stabilized, opening a knife switch on the communicating pipeline to communicate the soil bin with the air cushion bin until the pressure of the air cushion bin stabilizes the pressure of the soil bin; the spiral conveyer rotates to discharge slag into a crusher, and slurry is conveyed by a slurry discharge pump to discharge the slag after dilution; the soil pressure mode is changed into the muddy water mode, under the muddy water crushing mode, the mud enters the soil bin of the shield body 2 through the slurry inlet pipe 4, and then slag is discharged by carrying the slag soil through the screw conveyor 6, the crusher 7 and the slurry discharge pipe 5 in sequence.

The muddy water mode possesses two kinds of mud discharge passageways, and one kind is the straight row mode of muddy water, and another kind is the broken mode of muddy water, need not to tear open and trade any equipment and can carry out the seamless switching of two kinds of mud discharge modes. As shown in fig. 20 to 23, the concrete steps when the mud-water crushing mode is switched to the mud-water direct discharging mode are as follows: tunneling by the shield tunneling machine in a muddy water crushing mode; the deslagging mode is that the slag is discharged to a crusher by a screw conveyer, crushed and diluted in the crusher, and then conveyed to the outside of the hole by a slurry discharge pump and a slurry discharge pipe. Then stopping tunneling, stopping rotation of the screw conveyor, and closing the slag outlet door; and the pulp inlet pipe is used for feeding pulp to the crusher for circulation and cleaning the crusher. The washing of the crusher washing box is switched to a bypass mode; until the pressure, flow rate and the like of the circulation system pipeline are stable; checking whether the direct-discharge pipe of the soil bin is smooth, monitoring the pressure fluctuation condition of the soil bin, and switching from a bypass mode to a tunneling mode for slurry feeding of the soil bin and the air cushion bin; and opening a ball valve on a direct discharging pipeline of the soil bin in the shield body to circularly discharge the slag. Under the mud-water direct discharging mode, mud enters the soil bin of the shield body 2 through the mud inlet pipe 4 and then carries dregs to discharge dregs through the mud discharge pipe 5.

As shown in fig. 1, 2 and 5, the slurry and water double-channel shield machine with the soil pressure function comprises a cutter head 1, a shield body 2, a main drive 3, a slurry inlet pipe 4, a slurry discharge pipe 5, a screw conveyor 6, a crusher 7, a first trailer 8, a belt conveyor 9 and a slag outlet door 10.

The shield body 2 is a shell for bearing water and soil pressure. The cutter head 1 is arranged at the front end of the shield body 2 and is used for excavating soil. The main drive 3 is arranged inside the shield body 2 and is used for driving the cutter head 1 to rotate. The front end of the shield body 2 is provided with a soil bin and an air cushion bin which are matched with a mud water balance system and a soil pressure balance system to realize the dual-mode switching tunneling function.

The mud-water balance system comprises a mud inlet pipe 4, a mud discharging pipe 5 and a screw conveyor 6, wherein the mud inlet pipe 4 and the mud discharging pipe 5 extend into the soil bin, and a mud-water circulating straight-discharge pipe tunneling mode can be realized. The discharge pipes 5 are located on both sides of the screw conveyor 6 so as to stagger the space at the bottom.

Soil pressure balance system includes screw conveyer 6, breaker 7 and belt feeder 9, and screw conveyer 6 passes through the bolt and can dismantle with breaker 7 and be connected, and screw conveyer 6's rear end is established on a trailer 8, and a trailer 8 is last to store has belt feeder 9, can be according to geology difference, selects breaker or belt feeder to arrange at screw conveyer's rear portion.

The front end of the screw conveyor 6 is connected with a screw conveyor base on the shield body 2 through a joint bearing, and the rear end of the screw conveyor 6 is connected with a first trailer 8 through a supporting seat 601. When the shield machine goes up and down a slope and turns left and right, the whole movement along with the first trailer can be realized by utilizing the front joint bearing of the screw conveyor.

As shown in fig. 4, the crusher 7 is a jaw crusher, the crusher 7 is movably matched with a first trailer 8, a walking wheel 701 is arranged on the crusher 7, the walking wheel 701 walks on a platform track 801, and the platform track 801 is arranged on the first trailer 8, so that the crusher can walk above the first trailer conveniently. The belt conveyor 9 is stored on the upper portion of the first trailer 8 so that the belt conveyor tail assembly is stored on the upper portion of the first trailer.

The screw conveyor 6 is connected with a telescopic device, and the telescopic device controls the screw conveyor to extend into or withdraw from the soil bin. As shown in fig. 3, a slag outlet door 10 is arranged at the bottom of the soil bin, the slag outlet door 10 is a butterfly slag outlet door, and the slag outlet door is closed to ensure the closure of the soil bin in a straight-line pipe tunneling mode for mud-water circulation.

As shown in fig. 1, in the slurry-water dual-channel mode, when the shield tunneling machine tunnels to a small-particle high-water-pressure stratum (a full-face rock stratum, round gravel, soft soil, a fully weathered rock stratum, and the like), a slurry-water channel one (a straight-discharge pipe) can be used for efficient tunneling, that is, the concrete operation of converting the slurry-water channel two into the slurry-water channel one is as follows: firstly, the slurry channel II stops tunneling, the bolt conveyor stops rotating, and the bolt conveyor 6 retracts from the bottom of the soil bin by using a telescopic oil cylinder; secondly, closing a slag discharging door at the front part of the screw machine; thirdly, opening a gate valve of the slurry discharge pipe; and fourthly, debugging and tunneling.

As shown in fig. 2, in the slurry-water dual-channel mode, when the shield tunneling machine tunnels to a compound stratum such as a cobble crushed zone, a slurry channel two (a screw conveyor + a crusher + a slurry pipeline) can be used for carrying out stone discharge and slag tapping tunneling, that is, the concrete operation of converting the slurry channel into the slurry channel two is as follows: firstly, stopping tunneling the slurry channel, and closing a slurry discharge pipe gate valve; secondly, opening a slag discharging door at the front part of the bolt conveyor; thirdly, the screw conveyor 6 extends into the bottom of the soil bin by using a telescopic oil cylinder, and the bolt conveyor rotates; and fourthly, debugging and tunneling.

As shown in fig. 5, when the shield machine is in a low water pressure stable stratum, the shield machine can perform mode conversion to realize economical and efficient soil pressure mode tunneling, that is, the concrete operation of converting the muddy water dual-channel mode to the soil pressure mode is as follows: firstly, a screw conveyor 6 extends into the bottom of a soil bin by using a telescopic oil cylinder; secondly, extending the belt conveyor stored at the top of the first trailer, and installing the belt conveyor at a slag outlet of the screw conveyor; and thirdly, debugging and tunneling. And in the soil pressure mode, the one-key switching can be performed to the slurry mode of the straight discharge pipe, namely the two-channel slurry shield machine is converted into the soil pressure/slurry shield machine.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The tunnel construction method comprises a muddy water crushing mode and is characterized in that: the sludge-water crushing machine further comprises a soil pressure mode, when the muddy-water crushing mode is switched to the soil pressure mode, the crusher (7) is dismantled, a belt conveyor (9) at the rear end of the screw conveyor (6) is installed, and the residue soil sequentially passes through the screw conveyor (6) and the belt conveyor (9) to be discharged in the soil pressure mode; when the soil pressure mode is switched to the muddy water crushing mode, the belt conveyor (9) is detached, the crusher (7) at the slag discharge port of the screw conveyor (6) is installed, under the muddy water crushing mode, slurry enters the soil bin of the shield body (2) through the slurry inlet pipe (4), and then slag is carried to sequentially discharge slag through the screw conveyor (6), the crusher (7) and the slurry discharge pipe (5).

2. The tunnel construction method according to claim 1, characterized in that: the device also comprises a mud-water direct discharging mode, and when the mud-water direct discharging mode is switched to the mud-water crushing mode, the screw conveyor (6) and the crusher (7) are started; when the muddy water crushing mode is switched to the muddy water direct discharging mode, the screw conveyor (6) and the crusher (7) are closed, and under the muddy water direct discharging mode, mud enters the soil bin of the shield body (2) through the mud inlet pipe (4), and then carries dregs to discharge dregs through the mud discharge pipe (5).

3. The utility model provides a shield constructs machine, includes shield body (2), is equipped with muddy water balanced system and soil pressure balanced system in the shield body (2), and muddy water balanced system and soil pressure balanced system include screw conveyer (6), its characterized in that: the spiral conveyor (6) is detachably connected with the crusher (7), and a belt conveyor (9) is stored at the rear end of the spiral conveyor (6).

4. The shield machine of claim 3, wherein: the mud-water balance system comprises a mud inlet pipe (4) and a mud discharge pipe (5), wherein the mud inlet pipe (4) and the mud discharge pipe (5) extend into the soil bin, and the crusher (7) is communicated with the mud discharge pipe (5).

5. The shield machine of claim 3, wherein: the rear end of the spiral conveyor (6) is arranged on a first trailer (8), and the belt conveyor (9) is stored on the first trailer (8).

6. The shield machine of claim 3 or 5, characterized in that: the front end of the spiral conveyor (6) is connected with a spiral conveyor base on the shield body (2) through a joint bearing, and the rear end of the spiral conveyor (6) is connected with a first trailer (8) through a supporting seat (601).

7. The shield machine of claim 3, wherein: the screw conveyor (6) is connected with a telescopic device.

8. The shield machine of claim 3 or 5, characterized in that: the crusher (7) is movably matched with the first trailer (8).

9. The shield machine of claim 8, wherein: the crusher (7) is provided with a traveling wheel (701), the traveling wheel (701) travels on a platform track (801), and the platform track (801) is arranged on a first trailer (8).

10. The shield machine of claim 3 or 5, characterized in that: the belt conveyor (9) is stored at the upper part of the first trailer (8).