JPH11166399A - Lining method of timbering assembled in ring and assembling device of timbering - Google Patents

Abstract

PROBLEM TO BE SOLVED: To expedite the lining work of timbering by successively supplying following pieces to an assembling position while rotating an erector holding the first piece by a prescribed angle, and fastening the final piece to both adjacent pieces in the assembling position to assemble one ring. SOLUTION: One ring of an easy liner 10 is formed of three kind of pieces consisting of a standard piece A, a piece B having an inclined surface on one circumferential end part and a piece K having an inclined surface conformed to the inclined surface of the piece B on one end part. The piece B is supplied to the lower part within the tail part of a tunnel boring machine, and held by an erector head 5a, the erector 5a is rotated by a prescribed angle to supply the piece A to the lower position, and the connecting end parts of the pieces A, B are mutually bolted. The works of rotating the erector head 5a upward by the length portion of the connected piece A, supplying the following piece A, and bolting the adjacent end parts are successively performed, and the piece K is filled in the remaining narrow space to form a ring. Thus, the lining time of timbering can be shortened, and the working efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of winding a support material in a ring shape, which can efficiently and safely construct a support material to be supported along an inner wall of a tunnel excavated by a tunnel excavator. The present invention relates to a building method and a support material assembling apparatus.

[0002]

2. Description of the Related Art Conventionally, the support of the inner wall of a highly self-supporting tunnel excavated by a tunnel excavator is generally achieved by a combination of a steel ring support and a slab in a section where small-scale skin fall or collapse occurs. Is being done.
However, in such a method using a combination of the ring-shaped support and the hanging sheet pile, it takes time to attach the hanging sheet pile and the work efficiency is extremely poor. Is required.

[0003] For this reason, for example, Japanese Patent Laid-Open No. 9-2
As disclosed in Japanese Patent Application Publication No. 1297, a support structure (support material) (hereinafter referred to as a simple liner) formed in a frame shape without a skin plate and assembled in a ring shape by connecting a plurality of segments. It has been proposed that some of them have been put to practical use. Then, in order to wind such a simple liner around the inner wall of the excavation, the simple liner is assembled by gripping the piece with an erector and moving it to an assembly position.

[0004]

However, in the work of assembling the supporting material (simple liner) as described above by grasping the piece one piece at a time with the electa and moving it to the assembling position, grasping one piece of the simple liner with the electa. Every time the support pin is attached and detached, a lot of time is required for the support operation. In addition, when the erector head holding the simple liner turns many times and the assembling position is near the top end, the operator must perform bolting work for connection at a high position, and furthermore, assemble first. The liner may fall down and lose stability.
For example, a situation in which workers perform operations to support them,
There is a problem in workability, such as the danger of performing the support work.

The present invention has been made to solve the above problems and to provide a method of winding a support material into a ring and an apparatus for assembling the support material, which can perform the support operation safely in a short time. It is the purpose.

[0006]

In order to achieve the above object, a method for winding a ring-shaped support material according to the first invention is a method for winding a ring-shaped support material. A) After gripping the first piece with an erector and rotating it by a required angle, the next piece is supplied to an assembly position and fastened to an adjacent position piece. The pieces are supplied to the assembling position and fastened to the adjacent pieces. C) Thereafter, the operation described in the above b) is repeated a required number of times, and the last piece is fastened to both adjacent pieces at the assembling position to assemble into one ring. It is characterized by the following.

[0007] According to the winding method of the first invention, when the piece of the support material supplied first is gripped by the erector, the erector is required every time one piece of the support material to be newly assembled is carried in thereafter. It is only necessary to turn and connect the erector sequentially in the direction, and it is not necessary to reciprocate the erector one piece at a time between the receiving position of the supporting material and the assembling position. It has the effect of improving. Therefore, it can be said that the present invention can be effectively used for supporting a ground in tunnel excavation in a stratum where a part of a geological region with poor independence is interposed, and can be efficiently supported.

Further, in the present invention, when supplying and assembling the piece of the support material, the piece supply position of the support material is set to the lower side, and the piece of the support material is rotated with the adjacent piece previously rotated at the supply position. It is better to perform connection assembly. In this case, since one piece of the support material to be newly connected is always connected at the lower position, not only the support material assembling work is simplified, but also there is an effect that the work can be performed safely.

In addition, when assembling the support material in the machine, a plurality of support material temporary holding means are provided on the swivel ring of the erector, and the pieces of the support material sequentially assembled by these support material temporary holding means are placed from the inside. It is good to support. In this way, when the support material swiveled by the erector moves upward, it can be prevented from bending inward due to its own weight, so that an excessive load does not act on the erector's swiveling operation and the assembly is maintained in a stable state. The effect is that the work can be performed safely.

[0010] In the support material piece wound by the method of the present invention, the open end of the piece located at the foremost end in the turning movement direction is an inclined surface, and the piece to be incorporated lastly follows the inclined surface of the foremost piece. It is preferable to insert and engage them to assemble them. In this case, the final assembling operation for assembling the support material into one ring can be performed smoothly, and the workability can be further improved.

Further, in the present invention, the last piece of the support material pieces assembled into a ring is inserted into the last piece by expanding the assembled support material in the radial or circumferential direction. It is preferable to incorporate them after increasing the interval. Since the insertion interval of the piece to be incorporated last is wider than the length of the piece, the final assembling operation of the piece can be performed more smoothly. Also, for example, even if the supporting material pieces already assembled except for the last piece to be assembled are slightly bent so that the insertion interval of the last piece to be assembled is less than the length of this piece, the last part of the piece can be used without difficulty. Pieces can be incorporated.

The ring-shaped support material used in the winding method of the present invention can be applied not only to a simple liner but also to a steel annular support or a light-weight shield type segment. It is.

According to a second aspect of the present invention, there is provided an assembling apparatus for a ring-shaped support member, wherein the ring-shaped support member assembling apparatus is arranged so as to rotate around the axis of the tunnel by receiving power. A ring body, a support material gripping body attached to an appropriate position of the ring body and removably gripping each piece of the ring-shaped support material, and a support material piece mounted on the ring body in a required distribution and assembled. Is provided with a plurality of support material temporary holding means provided so as to hold from the inner peripheral side.

According to the apparatus for assembling the ring-shaped support material of the second invention, the work of winding the ring-shaped support material according to the first invention can be rationalized without complicating the structure and operation. This has the effect of being able to be implemented dynamically.

As the ring body in the second invention,
The swivel ring of the erector and the erector head as the supporting material gripper are preferably used. In this case, there is an effect that the structure of the excavator can be easily configured and can be effectively used. It should be noted that a separate body from the tunnel excavator can be used as the ring body. In addition, the support material temporary holding means includes a member having a base end attached to an outer peripheral portion of the ring body and a member (arm) mounted radially outward from the center of the ring body and capable of moving forward and backward in a centripetal direction. It is preferable that a configuration is adopted in which the metal plate attached to the tip is applied to the inner peripheral surface of the piece of the support material to be assembled. In this case, there is an advantage that the operation of correctly holding the pieces of the support material to be assembled in a ring shape can be easily performed. The members (arms) mounted in the support material temporary holding means in a radially outward direction may be structured so as to be able to turn up and down at their mounting bases so that there is no problem when each piece is carried into the assembly position. To facilitate the assembly work.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to the drawings, a specific embodiment of a method for winding a support material assembled in a ring shape according to the first invention together with an assembling device for a support material according to the second invention will be described. It will be explained while doing.

FIG. 1 is an exceptional view of one embodiment of a tunnel excavator used for tunnel excavation in which a method of winding a ring-shaped support member of the present invention is carried out. FIG. 2 is a sectional view taken along line AA in FIG. FIG. 3 is a diagram showing a relationship between an erector attached to the inside of the rear part of the tunnel excavator and the support material. FIGS. 4A and 4B are diagrams of a specific example showing a supporting mode of a support member and a support member attached to a swing ring of an erector, where FIG. 4A is a front view and FIG. 4B is a side view.
FIG. 5 is a perspective view showing a specific example of a piece of support material used in this embodiment.

In order to carry out the method for winding the support material assembled in a ring shape in this embodiment, it is necessary to support the inner wall of the tunnel 3 excavated by the tunnel excavator 1 as shown in FIG. When constructing a supporting material for the ground in the state, a supporting material (simple liner 10) of a required size is carried into the tail portion 2 of the tunnel excavator 1 by a known means, and assembled into one ring by the erector 5. Then, it is extruded from the tail portion 2 into a tunnel 3 excavated and supported by a jack device (not shown) and supported.

As shown in FIG. 5, for example, as shown in FIG. 5, the simple liner 10 used here has a peripheral surface divided into a plurality of parts having a diameter that can be adapted to the inner wall of the tunnel 3 to be excavated and having a required width. Opposite ends of a pair of arc-shaped channel steels 11 are connected to each other by a pair of linear steel plates 12 having a U-shaped cross section to form a frame. A pair of arcuate channel steels 11,
A structure in which 11 opposing portions are connected by a plurality of reinforcing members 13 is used. The simple liner 10 is bolted at the time of assembling only at a bolt connection hole 14 provided in a member at the end in the circumferential direction (linear steel 12). Although not shown, the simple liner 10, which is gripped by the erector 5 and assembled first, is provided with a bracket to be gripped by the erector head 5a at the center on the inner surface side. Further, as the simple liner 10, the one in which the reinforcing conditions of the reinforcing member are changed depending on the situation of falling or falling of the ground can be used.

Next, the winding method of this embodiment using the simple liner 10 will be specifically described. The method of winding the simple liner 10 is schematically shown in FIG. First, in order to form one ring supported by the simple liner 10, as shown in FIG. 6A, a piece A having a standard shape, a piece having one end in the circumferential direction inclined. B, a piece K that is to be finally combined with one end having a slope matching the slope of the piece B
In this embodiment, three pieces A and three pieces B
And one piece K is prepared.

First, as shown in FIG. 6 (I), a piece B is supplied to the lower portion of the tail portion 2 of the tunnel excavator 1 by well-known transport means, and the inner central portion of the piece B is gripped by the erector head 5a. Let it.

Next, the piece B gripped by the erector head 5a is turned by a required angle as it is, and the next standard piece A is supplied to the lower position (FIG. 6).
(II)) Then, one end of the piece B previously lifted by the erector head 5a and the newly supplied piece A
Are bolted together at the connection end.

When one piece A is connected to the piece B, the erector head 5a is turned upward by the length of the connected piece A to carry the next piece A to the supply position, and is connected first. The next piece A is bolted to the moved piece A (FIG. 6 (III)).

The erector head 5a is turned again to move the connected piece by the length of the piece A. And
The remaining piece A is supplied to the lower position and bolted to the previously connected piece A. In this state, as shown in FIG. 6 (IV), three pieces A are connected starting from the piece B, and a narrow space is left between the third piece A and the tip piece B. . Until this state is reached, the erector head 5a turns while holding the piece B, and during this time, each piece only needs to be bolted to adjacent pieces at the connection end.

Thereafter, the erector head 5a is turned only by the position corresponding to the position where the piece K is to be incorporated. The piece K is embedded in the last remaining space to form a connection with the ring. When this piece K is supplied and combined with the space, the connection end of one piece A to be connected is an upright surface, but the end of the piece B that is moved by being gripped by the other erector head 5a. Are inclined so that if one of the slopes of the piece K to be fitted is slid along the slope of the piece B, the pieces can be fitted without difficulty and the assembling operation becomes easy (FIG. 6). (V)). When the ring of the simple liner 10 is assembled in this manner, the piece K is moved upward by turning the erector head 5a in a direction opposite to the previous direction, and thereafter, the grip of the piece B by the erector head 5a is released, so that one ring is formed. Assembly is completed.

One ring of the simple liner 10 assembled in this manner is excavated rearward from the tail portion 2 of the tunnel excavator 1 by an extrusion jack (not shown) previously assembled to the tunnel excavator 1. Into the tunnel 3 In this state, a gap is formed between the outer periphery of the ring of the simple liner 10 and the inner wall surface of the tunnel 3. Therefore, the expansion jack provided in advance in at least one of the connection portions of the divided pieces of the simple liner 10 is provided. Using a device (not shown), the connection bolt of the connection portion is loosened, and the ring is extended along the inner wall surface of the tunnel 3 by the expansion jack device, so that the outer peripheral surface of the simple liner 10 contacts the inner wall surface of the tunnel. Operate so that it can be supported. If the jack device is provided at two or more places, the contact with the inner wall surface of the tunnel 3 can be performed quickly, which is convenient.

In this manner, one ring of the simple liner 10 is assembled and sent out behind the tail portion 2 of the tunnel excavator 1 to support the same. The operation of supplying the required pieces of the simple liner 10 and assembling them may be performed. And
When assembling the pieces of the simple liner 10, the pieces are supplied to the lower portion in the tail portion 2 as described above, and the connecting and assembling work is performed at this lower position.
Almost all operations other than the operation of removing the pin connection at the grip portion between the erector head 5a and the leading piece (piece B) after the ring assembly is completed can be performed at the lower position, and the work can be performed safely.

As described above, each piece of the simple liner 10 is gripped by the erector head 5a with the gripping force of the leading piece B, and the tail portion 2 is turned as the erector head 5a turns.
When the pieces of the simple liner 10 connected at the inner peripheral portion move, for example, move to the state shown in FIGS. 6 (IV) and 6 (V), the following follows except for the piece B gripped by the erector head 5a. When the piece A moves to the upper position, the pieces that are connected in front and rear only at the connecting portion are only kept in an arc shape, and tend to bend inward due to their own weight. Therefore, when turning for connection by the erector head 5a via the leading piece B, an excessive load may act and smooth turning may not be possible.

Therefore, as shown in FIG. 3 and FIG. 4, a part of the frame of the simple liner 10, ie, the inner peripheral surface of the arc-shaped channel steel 11, is previously set at a predetermined position on the outer peripheral portion of the erector ring 5b. Support fitting 2 to be held in contact
No. 0 is attached to a plurality of places, and the holding seat piece (contact pad 26) of the support fitting 20 is brought into contact with the inner peripheral surface of the frame of the simple liner 10 at the supply position of the piece at the time of assembly. If the simple liner 10 (piece) can be held in a fixed position and the assembly is performed in the above-described manner, the piece is held without being bent inward even when it reaches the upper position, and smoothly turns with the erector 5. You can move.

As shown in FIG. 4, the support fitting 20 of the simple liner 10 has a base 21 with a base mounting seat 22 bolted to a bracket 21 radially attached at a predetermined position on the outer peripheral surface of the elector ring 5b. A screw shaft 25 is screwed and supported by a boss 24 which is attached to the tip of an arm 23 protruding downward at the front and defining an axis vertically (radially outward from the center of the electoring ring 5b). Contact 2 supported on the tip of shaft 25
6 with a handle 2 attached to the rear end of the screw shaft 25.
The simple liner 10 is moved forward and backward by being rotated, and is pressed against the inner peripheral surface of the frame (one side arc-shaped channel steel 11) of the simple liner 10, and is held at a predetermined position by the metal plate 26. Can be In the drawing, reference numeral 28 denotes a detent piece for the backing 26.

Since the support bracket 20 of the simple liner 10 is fixedly attached to the erector ring 5b, when the piece of the simple liner 10 is supplied to the assembling position as described above, the support fitting 20 is used. The simple liner 10 supplied to a predetermined position with the gold 26 pulled up
Is preferably supplied so as to slide a part of the piece under the pad 26. However, since the pieces are carried in a narrow work space, the support fitting 20 is not used.
As shown in FIG. 7, the arm 23a is configured to be rotatable up and down, and when the piece is carried into the assembly position, the arm 23a is lifted (indicated by a two-dot chain line) and
Is retracted, and after assembly, the arm 23a is returned to a predetermined posture, fixed with bolts or the like, and thereafter, the contact plate 26 is brought into contact with the inner peripheral surface of the piece to be held. be able to. This facilitates the loading and assembling of the pieces of the simple liner 10.

In the above description, the procedure of connecting the pieces of the simple liner 10 to a series and assembling them has been described. However, as another assembling procedure, as shown in FIG. After gripping, the turning direction may be alternately switched left and right, and the next piece may be alternately connected to both sides of the gripped piece. The following is a description of this assembling procedure, assuming that the same kind of piece of the simple liner 10 is used as that described in the assembling procedure.

When assembling in this manner, first, as shown in FIG.
As shown in (I), the piece A is carried into the supply position and is gripped by the erector head 5a. Next, the erector head 5a is turned by a required angle in the direction of arrow a.
Thereafter, as shown in FIG. 8 (II), the piece B is carried to the supply position and connected to the piece A held by the erector head 5a. After that, the erector head 5a is turned in the reverse direction in the direction of the arrow b, and the next piece A is carried into the supply position as shown in FIG. 8 (III), and is first gripped and moved by the erector head 5a. Connected to the piece A. When the three pieces are connected in this way, as shown in FIG. 8 (IV), the erector head 5a is turned by one piece in the direction of the arrow b, and the pieces A to be carried in are connected. Thereafter, the last piece K is swiveled so that the last piece K can be supplied and assembled, and as shown in FIG.
Then, all pieces are connected by inserting a piece K between them to form a ring. Therefore, thereafter, similarly to the above-described process, the ring is pushed rearward from the inside of the tail portion 2 to the support position in the tunnel 3 by a pushing jack device (not shown), and then the ring is expanded to contact the ground. What is necessary is just to make it hold | maintain.

According to such an operation, the simple liner 10
Each piece is pivotally assembled with almost balanced on both sides of the piece gripped by the erector head 5a, so that the connected pieces are less likely to move upward and bend inward, It is also possible to omit the holding means by the support fitting 20 as described above. Of course, it is needless to say that the above-mentioned holding by the support fitting 20 is more secure.

According to the above description, the procedure for inserting the last piece K of the simple liner 10 so as to slide one slope of the piece K in accordance with the slope of the piece B when assembling the last piece K of the simple liner 10 has been described. However, as another assembling procedure, just before assembling the last piece K as shown in FIG. 9, the assembled supporting material is expanded radially or circumferentially to increase the insertion interval of the lastly incorporated piece. After this, the last piece K may be incorporated. In addition, if this assembling procedure is described as using pieces of the same type of simple liner 10 as those described in the above assembling procedure,
It is as follows.

The assembling procedure shown in FIGS. 9 (I) to (IV) is the same as the assembling procedure shown in FIGS. 6 (I) to (IV), and the piece B is gripped by the erector head 5a.
The pieces A of the standard shape are sequentially supplied and connected while turning the required angle. In this way, as shown in FIG. 9 (IV), three pieces A are connected with the piece B at the top, and
The turning operation is performed until a narrow space is left between the piece A and the tip of the head piece B. Then, FIG.
As shown in (V), the opposite piece (piece A ′) to the leading piece (piece B) gripped by the erector head 5 a is fixed by the fixing member 6 provided in the tail portion 2. . In this state, the erector head 5a
Is turned in the opposite direction (the direction in which the space is widened) to increase the space between the space portions in which the pieces K are incorporated. In this way, after the piece K is inserted into the space portion wider than the length of the piece K, the piece K is bolted by turning the erector head 5a in the original direction (the direction to close the space). (FIG. 9 (VI)). As described above, since the insertion interval in which the piece K is incorporated is widened compared to the length of the piece K, the last piece K can be easily fitted and the simple liner 10 can be assembled smoothly. Can be.

After the simple liner 10 is connected and formed in a ring shape, the gripping of the piece B by the erector head 5a is released, and the piece A 'by the fixing member 6.
The assembly of one ring is completed by releasing the fixing of. Thereafter, the simple liner 10 is pushed out of the tail portion 2 of the tunnel excavator 1 into the excavated tunnel 3 by the pushing jack (not shown) in the same manner as the above-described assembling procedure, and is extended by the expansion jack device. Installed along the inner wall of the tunnel.

FIG. 10 illustrates another embodiment of a procedure of expanding the assembled support material shown in FIG. 9 in the radial direction, and then widening the insertion interval of the piece to be finally mounted, and then mounting it. In this case, it is desirable that the erector head 5a and the support fitting 20 be a mechanism that can be extended and contracted and can apply a pressing force to each piece. The following is a description of this assembling procedure based on the use of the same kind of piece of the simple liner 10 as that described in the above-described assembling procedure.

The assembling procedure shown in FIGS. 10 (I) to (IV) is the same as the assembling procedure shown in FIGS. 6 (I) to (IV), and the piece B is gripped by the erector head 5a.
The pieces A of the standard shape are sequentially supplied and connected while turning the required angle. Thus, as shown in FIG.
The three pieces A are connected with the piece B at the top, and the turning operation is performed until a narrow space is left between the third piece A and the tip of the first piece B. Then, FIG.
As shown in FIG. 0 (V), by extending the erector head 5a and the support fitting 20 (not shown in FIG. 10), a pressing force is applied to all connected pieces, and The space between the third piece A and the leading piece B is widened. The piece K is inserted into the space thus expanded, and after contracting the erector head 5a and the support fitting 20, the pieces K are connected to form each piece in a ring shape. Therefore, thereafter, the ring is pushed back from the tail portion 2 to the support position in the tunnel 3 by the pushing jack device (not shown) from the tail portion 2 in the same manner as the above-described process, and then the ring is expanded to contact the ground. What is necessary is just to make it hold | maintain.

When the erector head 5a is not extendable, a pressing force is applied to a piece that does not contact the piece B gripped by the erector head 5a in order to prevent an excessive load from being applied to the grip portion of the erector head 5a. In addition, the space may be expanded.

In the case described above, the erector head 5a
And the support fitting 20 can be extended and contracted and a pressing force is applied. When such a mechanism is not provided, for example, a hydraulic jack is attached to the erector ring 5b in addition to the elector head 5a and the support fitting 20. It can also be used by providing a telescopic mechanism such as.

In the above description of the procedure for increasing the insertion interval of the last piece K, the present invention is applied to the assembling procedure shown in FIG. 6, but is not limited thereto. For example, the assembling procedure as shown in FIG. The assembling procedure is not limited as long as it is applied immediately before the last piece is assembled.

In the above description of the procedure for assembling the simple liner, the case where the supply assembly position of the simple liner is performed at the lower position of the tail portion has been described. However, the assembly procedure is not limited to this. After placing the first piece in the lower position, supply and connect subsequent pieces to a position where it can be connected to the piece by the erector, and at the point of connection at the upper part, the part already assembled It is also possible to assemble it by turning it to an assembly position where it is not necessary.

In the above description, the case where the support operation is performed using the simple liner as described above has been described. However, according to the gist of the present invention, for example, an H-shaped steel support ring is assembled. This can be applied to a case or a case where a support member having another structure is assembled into a ring for work. Further, the means for temporarily holding the flexure during the assembling of the support material by the erector is not limited to the above-mentioned support fitting, but may be any other type as long as the mechanism can hold the support material so as not to bend. Good.

In this embodiment, each piece of the simple liner 10 is assembled in the tail portion 2 of the tunnel excavator 1 and then pushed out to the tunnel pit wall. It may be assembled directly into the tunnel wall by the erector head 5a. When assembled directly into the tunnel wall, the piece A fixed by the fixing member is fixed to the ground by a pile or the like, a space is provided, and the last piece K is incorporated. Thus, each piece is connected and formed in a ring shape, and the grip by the erector head 5a is released. In this case, the fixation of the piece A by a stake or the like may or may not be released. Further, the fixing means of the piece A 'is not limited to the above-described embodiment, and may be fixed from the already-set ring-shaped simple liner side, or if the skin plate is not at the lower part, directly fixed to the ground at the bottom. Is also good.

In this embodiment, the simple liner 10 is combined with a piece having a standard shape, a piece having one circumferential end inclined, and a piece having the one end inclined so as to match the inclined surface. Although it is assembled with pieces, it is not limited thereto, and may be assembled with pieces of the same shape such as a standard shape. Further, the number of pieces for assembling them is not limited, and can be arbitrarily set according to the tunnel diameter and the like.

In addition, by adopting the method of winding the support material of the present invention, the tunnel excavator has the advantage that the inner diameter of the erector can be increased, and if only the efficiency of the operation of winding the support material is improved. Therefore, it can be said that the device is also effective.

In this embodiment, the case where an electoring ring of a tunnel excavator is used as a ring body of a device for assembling a supporting material has been described. Support materials can be assembled inside. In this way, by leaving the assembling device of the support material behind the tunnel excavator, there is an advantage that the support material assembled with the movement of the excavator can relatively move rearward.

In this embodiment, a simple liner is used as a ring-shaped support member. However, the present invention is not limited to this, and it is a steel ring-shaped support or a light-weight shield type segment. Can also be applied.

The support fitting of the simple liner in this embodiment corresponds to the support material temporary holding means of the present invention, the swivel ring of the elector corresponds to the ring body, and the elector head corresponds to the support material gripping body.

[Brief description of the drawings]

FIG. 1 is an exceptional view of one embodiment of a tunnel excavator used for tunnel excavation in which a method of winding a ring-shaped support member of the present invention is carried out.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a diagram showing a relationship between an erector attached to the rear inside of a tunnel excavator and a support material.

FIGS. 4A and 4B are diagrams showing a specific example of a support metal of a support material attached to a swivel ring of an erector and a support mode of the support material, wherein FIG. 4A is a front view, and FIG. It is a side view.

FIG. 5 is a perspective view showing a specific example of a piece of support material used in the present embodiment.

FIG. 6 is a schematic diagram showing a procedure for winding a simple liner (support material) in the present embodiment.

FIG. 7 is a diagram showing another embodiment of a support member of a support member attached to a swivel ring of an erector.

FIG. 8 is a schematic view showing another embodiment in a procedure for winding a simple liner (support material).

FIG. 9 is a schematic view showing another embodiment in a procedure for winding a simple liner (support material).

FIG. 10 is a schematic view showing another embodiment in a procedure for winding a simple liner (support material).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel excavator 2 Tail part 3 Excavated tunnel 5 Elector 5a Elector head 5b Elector ring 6 Fixing member 10 Simple liner 11 Arc-shaped channel steel 12 Straight type steel 13 Reinforcement member 14 Bolt connection hole 20 Support fitting 21 Bracket 23,23a Arm 24 Boss 25 Screw shaft 26 Backrest 27 Handle A Piece of simple liner B Piece to be the tip of simple liner K Last piece of simple liner

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Isao Hiraishi 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi, Osaka Prefecture Inside Okumura Gumi Co., Ltd. (72) Inventor Junji Ono 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi, Osaka No. 2 Okumura Gumi Co., Ltd. (72) Inventor Shoji Inoue 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi, Osaka Prefecture No. 2 Okumura Guminai Co., Ltd. (72) Inventor Satoshi Inoue 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi, Osaka No. 2 Okumura Gumi Co., Ltd. (72) Inventor Yoshito Minami 3-1-1 Ueno, Hirakata City, Osaka Prefecture Komatsu Seisakusho Osaka Plant (72) Inventor Masaru Nakamura 3-1-1 Ueno, Hirakata City, Osaka Co., Ltd. Inside the Komatsu Plant Osaka Plant (72) Inventor Masao Fukada 3-1-1 Ueno, Hirakata City, Osaka Prefecture Inside the Komatsu Plant Osaka Plant (72) Inventor Kyoichi Oka Hirakata, Osaka Ueno 3-chome, 1-1 Komatsu Ltd. Osaka in the factory

Claims (6)

[Claims] 1. A method for winding a ring-shaped support material, comprising the steps of: a) gripping the first piece with an erector and rotating it by a required angle; B) rotate the erector by the required angle as it is, supply the next piece to the assembling position, and fasten it to the adjacent position. C) After that, repeat the operation of the above b) the required number of times. A method of winding a support material into a ring, wherein the pieces are fastened to adjacent pieces at an assembling position and assembled into one ring. 2. When supplying and assembling the piece of the support material, the piece supply position of the support material is set to a lower side,
2. The method according to claim 1, wherein the connecting member is connected to an adjacent piece that has been rotated and moved at the supply position. 3. When assembling the support material in the machine, a plurality of support material temporary holding means are attached to the swivel ring of the erector to support the support material pieces sequentially assembled by the support material temporary holding means from the inside. The method for winding a support material assembled in a ring shape according to claim 1 or 2, wherein the support material is assembled. 4. The support material piece to be wound around,
The pivotal movement direction open end of the piece located at the foremost end is inclined so that the last piece to be assembled can be assembled by being inserted along the inclined face of the foremost piece. 4. The method of winding a support material assembled into a ring according to any one of 2 and 3. 5. The method according to claim 5, wherein the last piece of the support material pieces to be assembled in a ring shape is expanded in the radial direction or the circumferential direction of the assembled support material to increase the insertion interval of the last piece to be assembled. 5. The method of winding a support material assembled in a ring shape according to claim 1, wherein the support material is assembled. 6. An assembling apparatus for a support member assembled in a ring shape, comprising: a ring body arranged to rotate by receiving power around an axis of a tunnel; and a ring shape attached to an appropriate position of the ring body. A support material gripper for detachably holding each piece of the support material, and a plurality of support material temporary members provided to hold the pieces of the support material mounted and assembled on the ring body at a required distribution from the inner peripheral side. A device for assembling a support material assembled into a ring, comprising holding means.