JPH11173076A - High speed construction work system and high speed construction method for shield tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To considerably reduce construction cost in high speed construction work for a shield tunnel by carrying out the boring and segment assembly in parallel. SOLUTION: As shown in Fig. (a) to Fig. (d), a shield jack 15 pushes a reaction-receiving lined body 20 rearward, a drive process by a shield boring machine 10 by the rotation of a cutter face 12 is carried out together with a process of building a primary lined body 40 by assembling the primary lined segments 40A1 , 40A2 ,... in the circumferential direction by an erector 32 is performed in parallel. When the assembly of one ring 40' of the primary lined body 40 is completed and the drive for a distance equivalent to a width W in axial direction of this ring 40' is completed, the tip of the primary lined body 40 (ring 40')is pushed rearward by a middle pushing jack 33 and, at the same time, the shield jack 15 is shrunk and, as shown in Fig. (e), the middle pushing device 30 and the reaction-receiving lined body 20 is driven by a distance corresponding to the width W in the axial direction. A series of these operations (a) to (e) are repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for high-speed execution of a shield tunnel excavation process using a shield machine and a primary tunneling process for the inner wall of the tunnel.

[0002]

2. Description of the Related Art A shield tunneling machine is used to construct a shield tunnel by a shield method. Conventionally, for example, a shield excavator used in a mud pressure type shield construction method,
While propelling underground by the thrust of the shield jack described below, the disk-shaped cutter face is rotated at the tip of the substantially cylindrical shield frame in the excavation direction to excavate the ground at the front, and the excavated soil generated by this Is taken into a pressure chamber formed on the back side of the cutter face, mixed and stirred with muddy water in this pressure chamber, and continuously discharged through a screw conveyor.

At the rear end of the shield frame, in order to prevent the excavated inner wall of the pit from collapsing, a plurality of arc-shaped segments are sequentially assembled into an annular shape by an erector (segment assembling apparatus) and subjected to primary lining. By applying a shield jack to the tip of the existing cylindrical primary lining body and pressing it backward, a propulsive force is obtained by the reaction force. For this reason, after digging for a distance (one stroke) equal to the axial width of one ring of the primary lining, the primary lining is formed by a plurality of primary lining segments at the rear end of the shield frame. , A step of assembling one continuous ring from the tip of the ring, and then excavating again by one stroke equal to the axial width of one ring is repeated.

According to the above-mentioned construction method, the shield work is an alternating work of a digging step of a distance equal to the axial width of one ring and a step of assembling one ring of the primary lining body.
Since the ratio of the time spent for segment assembly in the time required for one construction cycle is relatively large, and excavation is not performed during that time, the excavation efficiency is not high. In recent years, for example, some excavation and segment assembly have been performed in parallel, such as continuously excavating the ground while constructing a cylindrical primary lining by assembling segments in a spiral direction. Construction methods are being developed.

However, when excavation and segment assembling are performed at the same time, a plurality of shields located at a new segment installation / assembly location are required to secure an assembly space for the primary lining segment on the inner periphery of the rear end of the shield frame. It is necessary to retract the jack, so that a uniform thrust cannot be obtained in the circumferential direction of the shield frame, and there is a problem that the direction control of the shield machine becomes unstable. In addition, it is necessary to use specially shaped segments to assemble the segments in the spiral direction, or it is necessary to make the shield machine a complicated structure,
For this reason, the price of the primary lining segment and the shield machine becomes higher. In particular, it is said that the price of a shield excavator that can perform excavation and segment assembly at the same time is two to three times the price of a normal shield excavator, and therefore, a certain construction distance (2000 to 2500 m or more) is required. Without it, it is difficult to reduce costs to be profitable.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and a technical problem thereof is to provide a shield tunnel by performing excavation and segment assembly in parallel. It is to realize a significant cost reduction in high-speed construction.

[0007]

As means for effectively solving the above-mentioned technical problems, a high-speed construction system for a shield tunnel according to the present invention comprises a cutter face for excavating a ground in front and a shield for propulsion. A shield excavator having a jack, a cylindrical reaction force receiving lining disposed behind the shield excavator and receiving the pressing force behind the shield jack, and pressing the reaction receiving lining from behind. An intermediate pressing device for propelling, the intermediate pressing device is configured to press an erector for assembling a primary lining segment into a cylindrical shape at a rear portion, and press a tip of an existing primary lining body in which the primary lining segment is assembled backward. And a push jack for obtaining a propulsive force by the reaction force. In the present invention, it is possible to perform excavation and segment assembly in parallel without the need for a specially shaped segment such as when the primary lining segment is assembled spirally, The purpose of the present invention is to simplify the structure by separating the part for performing the segment assembling, thereby improving workability and economy.

In the high-speed shield tunnel construction system according to the present invention, the shield jack presses the reaction-receiving lining body backward and the cutter face rotates, and the shield excavator performs the excavating operation, and the primary covering by the erector. A step of performing a primary lining segment assembling operation of the intermediate pressing device for sequentially assembling the processing segments in the circumferential direction, and a primary lining segment assembly for one ring of the primary lining body by the erector of the intermediate pressing device, and After the excavation of a distance corresponding to the axial width of the one ring by the shield excavator is completed, the primary lining body is pressed rearward by the extension of the intermediate pushing jack, and at the same time, the shield jack is extended with the extension speed of the intermediate pushing jack. By contracting at approximately the same speed, the intermediate pressing device and the reaction force receiving lining are connected to the one ring. And the inner press step of propelling by a distance corresponding to the axial width, are alternately repeated. That is,
Excavation and assembling of the primary lining segment are performed in parallel, and the intermediate pushing of the intermediate pushing device and the reaction receiving lining body is performed in a short time without excavation, so excavation at a higher speed than before is possible It is. In addition, a stable reaction force for propulsion of the shield excavator by extension of the shield jack is obtained by the reaction force receiving lining body which is restrained and held by the ground and supported by the intermediate pushing device.

[0009] The "extension" of the shield jack or the middle push jack referred to herein means that the drive rod of the jack is caused to protrude, and the "contraction" means that the drive rod is retracted.

According to the above-described operation, the excavating operation of the shield excavator is stopped during the propulsion (intermediate pushing) of the intermediate pushing device and the reaction force receiving lining body. However, since the intermediate pushing device and the reaction force receiving lining are propelled in a short time (several minutes) as described above, the time loss due to the temporary stoppage of the shield machine can be extremely small. In order to excavate more efficiently by completely eliminating such a short time loss, after the primary lining segment for one ring is completed by the erector of the intermediate pushing device, the intermediate pushing device and the reaction force receiving member are received. When the lining body is pushed midway, the primary lining body is pushed rearward by the extension of the middle pushing jack, and at the same time, the shield jack is contracted at a speed lower than the extension speed of the middle pushing jack, so that the middle pushing device and the reaction force receiving member are pressed. The lining body can be propelled by a distance corresponding to the axial width of the one ring, and the digging operation of the shield digging machine can be continuously performed.

In the above-mentioned operation, more preferably, a lubricant is injected into the outer periphery of the reaction force receiving lining body prior to the intermediate pushing of the reaction force receiving lining body and the intermediate pushing device. With this configuration, the sliding material is interposed between the reaction force receiving lining body and the surrounding ground, so that the propulsion resistance due to friction with the ground is reduced. The "slipper" used here
For example, an injection material used for reducing the frictional resistance of the propulsion pipe against the ground in the propulsion method is preferable.

[0012]

1 shows a preferred embodiment of a high-speed shield tunnel construction system according to the present invention, and FIG. 2 is an enlarged view of a portion A and a portion B of FIG. is there. In these figures, reference numeral 10 denotes a shield excavator that excavates underground, reference numeral 20 denotes a reaction force receiving lining disposed behind the shield excavator 10, and reference numeral 30 denotes a reaction force receiving lining. It is a middle push device arranged behind the body 20.

The shield machine 10 is rotated around a rotating shaft 12b by a cutter driving device (not shown) at a front end of the substantially cylindrical front frame 11 and a cutter bit 12a on the front surface. A cutter face 12 for excavating the ground G, a pressure chamber 13 defined on the back side thereof for introducing a shear (excavated soil) generated by the excavation of the ground G, and agitating with separately supplied muddy water; It includes a screw conveyor 14 for continuously discharging the shears in the chamber 13 and a plurality of shield jacks 15 fixed to the inner periphery of the front frame 11 at predetermined circumferential intervals.
A distal end of a cylindrical rear frame 16 is inserted concentrically and axially movably into the inner periphery of the rear end of the front frame 11 and connected to the protruding end of the drive rod 15 a of the shield jack 15. In other words, the rear frame 16 is moved relative to the front frame 11 by the protruding and retracting operation of the drive jack 15 a of the shield jack 15 while maintaining the state in which the front end is inserted into the rear end inner periphery of the front frame 11. It has become.

On the inner peripheral surface of the rear end of the front frame 11, a plurality of sealing members 17 having a cross-sectional shape as shown in FIG.
The plurality of inner peripheral lip portions 17a of the seal member 17 are slidably in close contact with the outer peripheral surface of the rear frame 16, so that groundwater and earth and sand can be removed from between the front frame 11 and the rear frame 16. It prevents intrusion and functions as a bearing for the rear frame 16. Further, the reaction force receiving lining body 20 is provided with a required number of sliding material injection devices (not shown) for injecting a sliding material between the outer peripheral surface of the reaction force receiving lining body 20 and the ground G. Have been. As described above, for example, an injection material used in the propulsion method is applied as the lubricant.

The reaction force receiving lining 20 has a cylindrical shape having a predetermined length in which the reaction force receiving segments 20A are assembled in the circumferential direction and the axial direction. As shown in FIG.
A sleeve 21 that projects rearward is provided on the outer peripheral surface of the rear end portion of each reaction force receiving segment 20A, and a small-diameter portion 22 that can be inserted into the inner periphery of the sleeve 21 is formed stepwise on the outer peripheral surface of the distal end. The small-diameter portion 22 has a cross-sectional shape as shown in FIG.
The seal members 23 and 24 having a are mounted. For this reason, in the assembled state shown in the figure, the reaction force
The small diameter portion 22 of the reaction force receiving segment 20A at the subsequent stage is inserted into the inner circumference of the sleeve 21A of 0A, and the sliding material injected into the outer circumference of the front frame 11 from the underground water, earth and sand, or a slipping material injection device by the sealing materials 23, 24. Material is prevented from entering, and the front and rear reaction force receiving segments 20A, 20A
OA are held concentrically with each other. Further, the small diameter portion 22 of the reaction force receiving segment 20A at the forefront is the rear frame 1
6, a sleeve 16a formed to project from the outer peripheral surface of the rear end.
The seal members 23 and 24 prevent the intrusion of groundwater, earth and sand, or a sliding material, and are held concentrically with the rear frame 16.

The intermediate press device 30 assembles a substantially cylindrical intermediate press frame 31 and a primary lining segment 40A around the rear inner periphery of the intermediate press frame 31 to construct a cylindrical primary lining body 40 along the inner wall of the pit. It includes an erector 32 and a plurality of middle-pressed jacks 33 fixed to the inner periphery of the middle-pressed frame 31 at predetermined circumferential intervals. Middle-pressed frame 3
A pressure ring 34 having a large rigidity for transmitting the thrust by the middle pressing jack 33 to the reaction force receiving lining body 20 is provided at the tip of 1. As shown in FIG.
Numeral 4 is inserted into the inner periphery of the sleeve 21 of the rearmost reaction force receiving segment 20A in the reaction force receiving lining 20, and the sealing members 35, 36 attached to the outer peripheral surface of the pressing ring 34. Is in close contact with the inner peripheral surface of the sleeve 21 to prevent intrusion of groundwater and earth and sand, and is held concentrically with the reaction receiving lining 20. The sealing materials 35 and 36 are sealing materials 23 and 24, respectively.
Is similar to Further, a plurality of stages of sealing materials 37 are mounted on the inner peripheral surface of the rear end portion of the middle-pressed frame 31,
The inner peripheral edge of the sealing material 37 is slidably in close contact with the outer peripheral surface of the existing primary lining body 40, so that groundwater, earth and sand, or backfill material from between the intermediately pressed frame 31 and the primary lining body 40 is formed. Intrusion is prevented.

The primary lining segment 40A has a normal shape which basically has a shape obtained by cutting a cylinder with a plane perpendicular to the axis and a plane passing through the axis, that is, not in the spiral direction, It is assembled and extended in one ring unit. Therefore, the operation control of the erector 32 and the middle pushing jack 33 in the middle pushing device 30 does not become complicated.

The sum of the thrusts of the shield jacks 15 in the shield machine 10 is larger than the excavation resistance acting on the shield machine, and the sum of the thrusts of the respective intermediate jacks 33 in the intermediate pushing device 30 is equal to the reaction force receiving cover. It is assumed that the excavation resistance caused by the friction between the body 20 and the ground G acting on the outer peripheral surfaces of the middle-pressed frame 31 and the total resistance such as the traction force on the rear bogie described later are larger. The reaction force against the pressing force of the shield jack 15 acting as the thrust of the shield machine 10 is determined by the friction force between the ground G acting on the outer peripheral surface of the reaction force receiving lining body 20 and the reaction force receiving lining. Middle push device 30 backing body 20
Of the intermediate pushing jack 33 against the primary lining body 40. Further, the stroke of the drive rod 15a of the shield jack 15 and the stroke of the drive rod 33a of the middle push jack 33 are:
It corresponds to the axial width of one ring of the primary lining body 40, that is, the axial width W of a single primary lining segment 40A.

A control panel for controlling the entire system,
Operation panel, each shield jack 15 and middle push jack 33
A rear bogie (not shown) on which a hydraulic unit, a transformer, power cables, and the like for operating the air conditioner are mounted is normally arranged behind the intermediate pressing device 30 (in the primary lining body 40) and pulled by the intermediate pressing device 30. However, depending on the length of the reaction receiving lining body 20, it can be installed inside the reaction receiving lining body 20. In this case, a larger assembling space is secured at the rear portion of the intermediate pressing device 30 than when assembling the primary lining segment at the inner periphery of the rear end of the shield machine, and the primary lining segment and other materials are carried in. Can be performed smoothly. Therefore, it is also possible to automatically transport the primary lining segment, which has been impossible in the construction of a small-diameter shield tunnel, thereby saving labor.

FIG. 5 shows a first construction method of the shield tunnel according to the above embodiment. First, FIG.
In FIG. 5A, in the shield machine 10, the drive rod of the shield jack 15 is completely immersed, and while the cutter face 12 is rotated from this state, the ground G in front of the shield machine is excavated. As shown in (d), the drive rod of the shield jack 15 is gradually pushed backward, and the reaction receiving lining body 20 is inserted through the rear frame 16.
Propelling (digging) underground by the reaction force obtained by pressing the tip of At this time, shield machine 1
Since the primary lining segment is not assembled at the rear end of the zero, there is no need to retract some of the shield jacks 15, and it is restrained by the ground G and the intermediate pushing device 3.
When the shield jack 15 presses the reaction force receiving lining body 20 backed up at 0 with the shield jack 15 backward, a stable reaction force (thrust of the shield machine 10) is obtained.

On the other hand, while the shield machine 10 is excavating, the erector 32 of the intermediate pushing device 30 sequentially installs the primary lining segments 40A in the circumferential direction and connects the primary lining segments 40A to the tip of the existing primary lining body 40. While assembling.
That is, FIG. 5 (a) is in the state in which the drive rod protrudes to the stroke limit of all the inner press jack 33 of the inner press device 30, following FIG. 5 (b), circumferential portion of the inner press jack 33 ₁ of the drive retract the rod, at that portion erector 32 is a primary lining segments 40A ₁ shows a state in which the assembly to the tip of the existing primary lining body 40. Furthermore, FIG. 5 (c), the FIG 5 (b) Once the inner press jack 33 ₁ of the driving rod retracted in, with pressed against the tip of one assembly is completed primary lining segments 41A, different from the inner press jack 33 ₁ retract the inner press jack 33 ₂ of the drive rod position, showing a state in which at that portion erector 32 is assembled primary lining segments 40A _2.

In this manner, from the start of excavation shown in FIG. 5A, the shield machine 10 corresponds to one stroke of the shield jack 15, that is, the axial width W of one ring of the primary lining body 40. Before digging for the distance
As shown in FIG. 5D, the construction of a new primary lining body 40 'for one ring is already completed at the tip of the primary lining body 40. At the time when the excavation is performed by the distance W of one stroke, the drive rods of all the intermediate pushing jacks 33 in the intermediate pushing device 30 are simultaneously protruded to push the primary lining body 40 backward, and at the same time, the shield excavator 10 By simultaneously retracting the drive rods of all the shield jacks 15 at a speed substantially equal to the projecting speed of the drive rods of the intermediate pushing jack 33, FIG.
As shown in (e), the intermediate pressing device 30, the reaction receiving lining body 20, and the rear frame 16 of the shield machine 10 are
Middle pushing is performed by a distance (for one stroke) corresponding to the axial width W of the one ring.

In the above-mentioned medium pushing propulsion, a sliding material is injected into the outer periphery of the reaction force receiving lining body 20 by a lubricant injection device in a timely manner. In this way, since the sliding material layer is interposed between the reaction receiving lining body 20 and the middle pushing device 30 and the surrounding ground G, the pushing resistance is small and the middle pushing can be smoothly performed. . FIG. 5 (e) showing a state in which the middle pushing is completed is equivalent to FIG. 5 (a), and at this point, a series of steps from FIG. 5 (a) is repeated again.

In the above-mentioned middle pushing propulsion operation, since the projecting speed of the driving rod of the middle pushing jack 33 and the immersion speed of the driving rod of the shield jack 15 are equal, FIG.
At the time of the start of the middle press shown in (d) and the end of the middle press shown in FIG. 5 (e), the shield machine 10 simply stores the pushed rear frame 16 in the front frame 11, The position of the front frame 11 does not change,
That is, the shield machine 10 is stopped. However, since this promotion takes only a few minutes,
A large time loss due to the stoppage of the shield machine 10 during that time does not occur.

FIG. 6 shows a second construction method of the shield tunnel according to the above embodiment. Also in this construction method, the drive rods of the shield jack 15 are completely immersed, and the drive rods of all the intermediate push jacks 33 are in the state of protruding to the stroke limit.
From the state of (a), the excavation by the shield excavator 10 and the assembly of the primary lining segment 40A by the erector 32 in the intermediate pushing device 30 are performed in parallel.

Then, as shown in FIG. 6D, a new primary lining body 4 for one new ring is attached to the tip of the primary lining body 40.
When the construction of 0 ′ is completed, the drive rods of all the intermediate pushing jacks 33 in the intermediate pushing device 30 are immediately protruded at once without waiting for the shield machine 10 to reach the excavating distance W for one stroke of the shield jack 15. At the same time as pushing the primary lining body 40 backward, the drive rods of all the shield jacks 15 in the shield machine 10 are simultaneously retracted at a speed lower than the projecting speed of the drive rod of the intermediate pushing jack 33. Then, as shown in FIGS. 6D to 6F, the intermediate pushing device 30, the reaction force receiving lining body 20, and the rear frame 16 of the shield machine 10 are moved by a distance W for one stroke of the intermediate pushing jack 33. In the course of propulsion, the shield machine 10 also receives thrust due to the difference in operating speed between the shield jack 15 and the middle pushing jack 33. Therefore, the excavating operation by the shield excavating machine 10 can be continuously performed even during the above-mentioned middle pushing operation.

At the end of the middle pressing operation shown in FIG.
The shield excavator 10 excavates from the position shown in FIG. 6A by a distance W for one stroke, and the drive rod of the shield jack 15 is completely immersed. And FIG.
(F) corresponds to the state of FIG.
The series of operations from FIG. 6A is repeated without excavation being interrupted.

According to this method, a propulsive force is also applied to the shield machine 10 at the time of the middle pushing operation. Therefore, compared to the first method described above, only the propulsion resistance acting on the shield machine 10 is provided. It is necessary to increase the thrust of the middle push jack 33. Further, in order to keep the excavating speed of the shield shield excavator 10 at a predetermined speed, it is necessary to appropriately control the difference between the driving rod immersion speed of the shield jack 15 and the driving rod protrusion speed of the intermediate pushing jack 33 at the time of middle pushing. is there.

In the first or second construction method described above, when a curved shield tunnel is constructed, the shield machine 10 has a structure equipped with a known folding mechanism. Further, in this case, a joint portion between the rear frame 16 of the shield machine 10 and the reaction receiving lining body 20,
The joint portion of the reaction force receiving segments 20A, 20A adjacent to each other in the axial direction in the reaction force receiving lining body 20 and the joint portion of the reaction force receiving lining body 20 and the intermediate pressing device 30 are usually formed by a propulsion method. The joint structure corresponding to the curve is adopted.

When the shield excavator 10 is started from the starting shaft, the reaction force receiving lining body 20 is installed in the starting shaft. A propulsion pipe or the like used in the construction method can be substituted.

[0031]

According to the present invention, the following effects are realized. (1) Since excavation and assembling of the primary lining segment are performed in parallel, high-speed construction of the shield tunnel is possible, and the construction period can be significantly shortened and the construction cost can be reduced. (2) No specially shaped segments are required, ordinary primary lining segments can be used, and the structure of the shield machine itself is simplified, so there is no significant increase in material and equipment costs. . (3) It is possible to achieve higher speed construction without interrupting the excavation of the shield excavator even during the intermediate pushing process of the intermediate pushing device and the reaction force receiving lining body. (4) The injection of lubricating material reduces the propulsion resistance during mid-push propulsion. (5) The propulsion of the shield machine is given by the reaction force by pushing the reaction receiving lining body confined to the ground backward with all the shield jacks, so that a stable thrust can be obtained. (6) The rear bogie on which various devices such as a control panel are mounted can be installed in the reaction force receiving lining in front of the intermediate pushing device for assembling the primary lining segment, which hinders the loading of the primary lining segment. And labor saving is achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a preferred embodiment of a high-speed construction system for a shield tunnel according to the present invention.

FIG. 2 is an explanatory diagram showing an enlarged part A and part B of FIG. 1;

FIG. 3 is an enlarged sectional view of a seal member 17 in the embodiment.

FIG. 4 is an enlarged sectional view of the sealing members 23 and 24 in the embodiment.

FIG. 5 is an explanatory diagram showing a first construction method according to the embodiment.

FIG. 6 is an explanatory diagram showing a second construction method according to the embodiment.

[Explanation of symbols]

10 shield machine 12 the cutter face 15 shield jacks 20 reaction force received lining body 20A reaction force receiving segment 30 inner press device 32 erector 33 _1, 33 ₂ inner press jack 40 primary lining assemblies 40A primary lining segments

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Mitsuo Shibuya, Inventor Fujita 4-6-115, Sendagaya, Shibuya-ku, Tokyo (72) Inventor Seiji Kobayashi 4-6-115, Sendagaya, Shibuya-ku, Tokyo In the formula company Fujita

Claims (4)

[Claims] 1. A shield excavator having a cutter face for excavating a ground in front and a shield jack for propulsion, and a cylindrical reaction force disposed behind the shield excavator and receiving a rearward pressing force of the shield jack. A receiving lining body, and an intermediate pushing device for pushing and propelling the reaction receiving lining body from behind, the intermediate pushing device comprising: an erector for assembling a primary lining segment into a cylindrical shape at a rear portion; A high-speed construction system for a shield tunnel, comprising: a middle push jack that obtains a propulsive force by a reaction force by pressing a tip of an existing primary lining body having assembled segments backward. 2. The excavating operation of a shield excavator according to claim 1, wherein the shield jack presses the reaction force receiving lining body rearward and the cutter face rotates, and the primary lining segment is circled by the erector. A step of performing a primary lining segment assembling operation of the intermediate pressing device for sequentially assembling in the circumferential direction, and a primary lining segment assembly of one ring of the primary lining body by the erector of the intermediate pressing device and the shield excavator. After the excavation of the distance corresponding to the axial width of the one ring is completed, the primary lining body is pressed rearward by the extension of the intermediate pushing jack, and at the same time, the shield jack is extended at a speed substantially equal to the extension speed of the intermediate pushing jack. The intermediate pushing device and the reaction-force receiving lining are propelled by a distance corresponding to the axial width of the one ring by contracting the ring. Fast construction method for shielding tunnel and repeating the inner press process, the alternately to. 3. The digging operation of a shield excavator according to claim 1, wherein the shield jack presses the reaction force receiving lining body rearward and the cutter face rotates, and the primary lining segment is circled by the erector. A step of performing a primary lining segment assembling operation of the intermediate pressing device for sequentially assembling in the circumferential direction; and, after completing the primary lining segment assembly of one ring of the primary lining body by the erector of the intermediate pressing device, the primary covering The intermediate body is pushed rearward by the extension of the intermediate pushing jack, and at the same time, the shield jack is contracted at a speed lower than the extension speed of the intermediate pushing jack, so that the intermediate pushing device and the reaction force receiving lining are connected to the shaft of the one ring. Alternately, while propelling by a distance corresponding to the direction width and continuously performing the excavating operation of the shield excavator. Fast construction method for shielding tunnel and repeating. 4. The method for high-speed construction of a shield tunnel according to claim 2, wherein a lubricating material is injected into the outer periphery of the reaction force receiving lining body prior to the middle pressing step.