JP2008240454A - Mud pipe extension device for shield machine - Google Patents

Abstract

To provide a mud pipe extension device for a compact shield machine.
A first carriage 11 that is pulled by a shield machine and is movable along the longitudinal direction of the tunnel, the rear end of the face side mud pipes 1a and 2a being fixed, and a first carriage 11 disposed on the first carriage 11 and A second frame 12 that is movable along the longitudinal direction of the tunnel and to which the front ends of the well-end mud pipes 1b and 2b are fixed, and a first frame 14 that is erected on the first carriage 11 and has a horizontal surface 13 that is positioned above the tunnel. And a second frame 16 erected on the second carriage 12 and having a horizontal surface 15 located at the upper part of the tunnel, and interposed between the face side mud pipes 1a and 2a and the well side mud pipes 1b and 2b, and The face-side mud pipes 1a and 2a and the well-side mud pipe 1b are arranged in a curved state along the horizontal plane 13 of the first frame 14 and the horizontal plane 15 of the second frame 16. 2b is the tunnel And a flexible hose 17 and 18 allows to longitudinally spaced.
[Selection] Figure 1

Description

  The present invention relates to an apparatus for adding a muddy water pipe that sends muddy water to a shield machine that constructs a tunnel or discharges muddy water containing excavated sediment from the shield machine when the shield machine is dug.

  The shield machine has a cylindrical shield frame body, a cutter provided at the front of the machine body, a cutter for excavating the face, and an interior of the machine body, and the segment is shield frame A plurality of erectors for assembling along the inner periphery of the shield frame, a plurality of shield jacks provided on the inner periphery of the shield frame at intervals in the circumferential direction, and for taking the reaction force to the assembled segments and advancing the machine body It has.

  Such a shield machine extends the shield jack, presses the cutter against the face, excavates the face with the cutter, and takes the excavated earth and sand into a cutter chamber provided at the front of the machine body. .

  In a muddy-type shield machine that sends muddy water to the cutter chamber and stabilizes the face by muddy water pressure, discharges muddy water including excavated sediment from the cutter chamber, and fluidly transports the excavated sediment, A mud pipe (mud pipe) for discharging the mud containing excavated sediment from the cutter chamber.

  In such a shield machine, since the shield machine is separated from the well opening as the shield machine is dug, mud pipes such as a mud pipe and a mud pipe must be sequentially added.

  Therefore, in order to smoothly perform the work of adding such a mud pipe, it is interposed between the face side mud pipe that forms the face side of the mud pipe and the mud side mud pipe that forms the part of the mud pipe. In addition, a muddy water pipe extension device including a flexible hose wound around a drum or a reel has been proposed (see Patent Documents 1 to 3, etc.).

  In such a mud pipe extension device, the flexible hose wound around the drum or reel is pulled out as the shield machine advances, so that the face side mud pipe and the well side mud pipe are separated in the longitudinal direction of the tunnel. Is allowed to do. When the shield machine is excavated by a predetermined distance and the flexible hose wound around the drum or reel is pulled out by the predetermined length, the flexible hose is closed after closing the well-side mud pipe using the plug mechanism. Is removed from the well side mud pipe. Then, by winding the drawn-out flexible hose around the drum or reel again, a space for inserting the additional mud pipe is formed between the rear end of the flexible hose and the front end of the well-end mud pipe. The flexible hose and the wellhead-side mud pipe are connected by the mud pipe for addition.

Japanese Patent Laid-Open No. 11-131981 Japanese Patent Laid-Open No. 11-200768 Japanese Patent Application Laid-Open No. 11-247583

  By the way, in the mud pipe extension device as described above, since the flexible hose is wound around the drum or the reel, the flexible hose, the drum or the reel occupies a space in the vertical direction, and the entire device is a tunnel. There was a problem that it became large in the vertical direction.

  In addition, since the plug mechanism for closing the wellhead side mud pipe is provided in the subsequent carriage of the carriage provided with the flexible hose, the drum and the reel, the entire apparatus becomes large in the longitudinal direction of the tunnel. There was a problem of becoming.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mud pipe extension device for a compact shield machine.

  In order to achieve the above object, the present invention adds a muddy water pipe that sends muddy water to a shield machine that constructs a tunnel or discharges muddy water containing excavated sediment from the shield machine, as the shield machine advances. In the apparatus for the above, the face side mud pipe forming the face side part of the mud pipe, the well side mud pipe forming the part on the well opening side of the mud pipe, and the longitudinal direction of the tunnel pulled by the shield machine A first carriage to which the rear end of the face-side mud pipe is fixed, and movable along the longitudinal direction of the tunnel and disposed on the first carriage. A second carriage to which the front end of the water pipe is fixed, a first frame standing on the first carriage and having a horizontal surface located on the upper part of the tunnel, and standing on the second carriage, on the upper part of the tunnel Horizontal plane A second frame having the face side mud pipe and the well side mud pipe, and curved along the horizontal plane of the first frame and the horizontal plane of the second frame. And a flexible hose for allowing the face side mud pipe and the well side mud pipe to be separated in the longitudinal direction of the tunnel as the shield machine is dug. It is.

  Here, a plug mechanism for releasing and closing the wellhead mud pipe may be provided, and the plug mechanism may be disposed on the second carriage.

  According to the present invention, it is possible to provide a mud pipe adding device for a compact shield machine.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side sectional view of a mud pipe adding device according to an embodiment of the present invention. 2 is a view taken along the line II-II in FIG. 3 is a view taken along the line III-III in FIG.

  Although not shown, the shield machine according to the present embodiment includes an excavator body having a cylindrical shield frame, a cutter provided at the front portion of the excavator body, and an excavator body. Electors for assembling the segments along the inner periphery of the shield frame, and multiple erectors on the inner periphery of the shield frame, spaced in the circumferential direction, and taking the reaction force from the assembled segments A shield jack for advancing the machine body is provided.

  The shield machine according to the present embodiment sends muddy water to a cutter chamber provided at the front of the machine main body, into which excavated earth and sand (excavated earth and sand) is taken, stabilizes the face by muddy water pressure, and excavates from the cutter chamber. It is a muddy water type that discharges muddy water containing earth and sand and transports the excavated earth and sand by fluid.

  Therefore, the shield machine according to the present embodiment includes a mud pipe 1 (mud pipe) for sending mud water to the cutter chamber, and a mud pipe 2 (mud pipe) for discharging mud water containing excavated soil from the cutter chamber. (See FIGS. 1 to 3).

  The mud pipe 1 includes a face side mud pipe 1a (face side mud pipe) that forms the face side (left side in FIG. 1) of the mud pipe 1, and a well port side (in FIG. 1). It is comprised from the wellhead side mud pipe 1b (wellhead side mud pipe) which makes the part of the right side.

  The mud pipe 2 includes a face side mud pipe 2a (face face mud pipe) that forms a face side part of the mud pipe 2, and a well side mud pipe 2b that forms a well side part of the mud pipe 2. Side mud pipe).

  As shown in FIG. 1 to FIG. 3, the muddy water pipe adding device 10 according to the present embodiment is pulled by the shield machine and is formed in the longitudinal direction of the tunnel T constructed behind the shield machine (left and right in FIG. 1). ), The first carriage 11 on which the rear ends of the face-side mud pipe 1a and the face-side mud pipe 2b are fixed, and the longitudinal direction of the tunnel T disposed on the first carriage 11 , The second carriage 12 to which the front ends of the wellhead-side mud pipe 1b and the wellhead-side mud pipe 2b are fixed, and the horizontal surface 13 which is erected on the first carriage 11 and located above the tunnel T A first frame 14 having a horizontal plane 15 that is erected on the second carriage 12 and is located above the tunnel T, and between the face-side mud pipe 1a and the well-end mud pipe 1b, And the face side mud pipe 2a and the well side mud pipe 2b And is arranged in a state of being curved along the horizontal plane 13 of the first frame 14 and the horizontal plane 15 of the second frame 16, and the face-side mud feed pipe 1a as the shield machine advances. And a flexible hose 17 and 18 for allowing the face side mud pipe 2a, the well side mud pipe 1b, and the well side mud pipe 2b to be separated in the longitudinal direction of the tunnel T.

  The wellhead-side mud pipe 1b and the wellhead-side mud pipe 2b are each configured by adding an additional mud pipe 3 having a predetermined length as the shield machine advances. A plurality of the extension mud pipes 3 are loaded on a transport carriage 20 running on a culvert 19 laid on the bottom of the tunnel T, and are transported from the wellhead side to the face side by the transport carriage 20. The additional muddy water pipe 3 on the transport carriage 20 is formed by using a hoist (not shown) disposed on the first frame 14 of the first truck 11 and the additional muddy pipe stock provided on the first carriage 11. Moved to place 21.

  The first carriage 11 travels on a block 22 laid on the bottom of the tunnel T so as to sandwich the culvert 19 from both sides in the width direction of the tunnel T. The first carriage 11 has a base portion 23 and traveling wheels 24 provided on the lower surface of the base portion 23. The traveling wheel 24 travels on a rail 25 laid on the block 22 along the longitudinal direction of the tunnel T.

  The first bogie 11 is connected to a main body of the shield machine or a cart (not shown) that travels ahead of the first bogie 11 in the tunnel T and is pulled by the shield machine.

  The first frame 14 is mainly composed of a plurality of columns 26 erected on the base 23 and a girder 27 spanned over the columns 26. On the beam 27, a flat plate 28 (for example, an iron plate) forming the horizontal surface 13 of the present embodiment is laid. That is, in the present embodiment, the horizontal surface 13 of the first frame 14 coincides with the upper surface of the flat plate 28.

  The face side mud pipe 1a and the face side mud pipe 2a are fixed to the flat plate 28 provided in the first frame 14 via a mounting member 29 at the rear end thereof. The rear ends of the face-side mud pipe 1a and face-side mud pipe 2a are located on one side in the width direction of the tunnel T (the lower side in FIG. 2), and the face-side mud pipe 1a and face-side mud pipe One end (front end) of the flexible hoses 17 and 18 is connected to the rear end of the mud pipe 2a.

  The horizontal plane 13 may coincide with the upper surface of the beam 27. That is, the flexible hoses 17 and 18 may be directly arranged on the beam 27 without laying the flat plate 28 on the beam 27 of the first frame 14.

  The second carriage 12 travels on the base 23 of the first carriage 11. The second carriage 12 has a base portion 30 and leg portions 31 provided on the lower surface of the base portion 30. The leg portion 31 travels on a rail 32 laid along the longitudinal direction of the tunnel T on the base portion 23 of the first carriage 11.

  The second frame 16 is mainly composed of a plurality of pillars 33 standing on the base 30 and a girder 34 laid over the pillars 33. On the beam 34, a flat plate 35 (for example, an iron plate) forming the horizontal surface 15 of the present embodiment is laid. That is, in this embodiment, the horizontal surface 15 of the second frame 16 coincides with the upper surface of the flat plate 35.

  A wellhead-side mud pipe 1b and a wellhead-side mud pipe 2b are fixed to a flat plate 35 provided on the second frame 16 via an attachment member 36 at the front end thereof. The front ends of the wellhead side mud pipe 1b and the wellhead side mud pipe 2b are located on the other side in the width direction of the tunnel T (upper side in FIG. 2), and the wellhead side mud pipe 1b and the wellhead side mud pipe The other ends (rear ends) of the flexible hoses 17 and 18 are connected to the front ends of 2b, respectively.

  Note that the horizontal surface 15 may coincide with the upper surface of the beam 34. That is, the flexible hoses 17 and 18 may be directly disposed on the beam 34 without laying the flat plate 35 on the beam 34 of the second frame 16.

  Further, the horizontal plane 15 of the second frame 16 has a height substantially equal to the height of the horizontal plane 13 of the first frame 14. That is, the flat plate 35 provided on the second frame 16 has a height to the upper surface equal to the height to the upper surface of the flat plate 28 provided on the first frame 14. Alternatively, the height of the girders 34 of the second frame 16 is equal to the height of the upper surfaces of the girders 27 of the first frame 14.

  One end (front end) of the flexible hose 17 is connected to the rear end of the face-side mud feeding pipe 1a, and the other end (rear end) is connected to the front end of the well-end side mud feeding pipe 1b. The flexible hose 18 has one end (front end) connected to the rear end of the face-side mud pipe 2a and the other end (rear end) connected to the front end of the well-end side mud pipe 2b. . As a result, mud is supplied from the wellhead side mud pipe 1b to the face side mud pipe 1a via the flexible hose 17, and mud water containing excavated earth and sand is connected to the face side mud pipe 2a via the flexible hose 18. The fluid is transported from to the wellhead side mud pipe 2b.

  In the present embodiment, the flexible hoses 17 and 18 respectively protrude rearward along the horizontal plane 13 (flat plate 28) of the first frame 14 and the horizontal plane 15 (flat plate 35) of the second frame 16. Thus, it is curved in a substantially U shape and arranged horizontally.

  The mud pipe extension device 10 according to the present embodiment, when adding the addition mud pipe 3 to the well side mud pipe 1b and the well side mud pipe 2b (existing addition mud pipe 3), A plug mechanism 37 for releasing and closing the pipe 1b and the wellhead side mud pipe 2b is provided. The plug mechanism 37 is disposed on the base 30 of the second carriage 12.

  In the present embodiment, the plug mechanism 37 has a T-shaped pipe 38 interposed in the middle of the wellhead side mud pipe 1b and the wellhead side mud pipe 2b. The T-shaped pipe 38 includes a straight main pipe part 39 and a branch pipe part 40 connected to the main pipe part 39. The T-shaped pipe 38 communicates the wellhead side mud pipe 1b with the branch pipe part 40 and one end of the main pipe part 39, and from the main pipe part 39 side of the wellhead side mud pipe 1b to the branch pipe part 40 side. Muddy water is supplied. In addition, the T-shaped pipe 38 communicates the wellhead side mud pipe 2b at one end of the branch pipe part 40 and the main pipe part 39, from the branch pipe 40 side of the wellhead side mud pipe 2b to the main pipe part 39 side. And muddy water including excavated soil is discharged. The branch pipe part 40 is provided with a shut valve 41, and a plug 42 is accommodated on the other end side of the main pipe part 40.

  The plug mechanism 37 is connected to the branch pipe portion 40 of the T-shaped pipe 38 when the additional mud pipe 3 is added to the pit side mud pipe 1b and the pit side mud pipe 2b (the existing additional mud pipe 3). The provided shut valve 41 is closed, the branch pipe 40 side of the wellhead side mud pipe 1b and the wellhead side mud pipe 2b is closed, and the plug 42 is connected with the fluid pressure (pneumatic pressure in this embodiment). It is driven into the wellhead side mud pipe 1b and the wellhead side mud pipe 2b through the main pipe part 39 of the character pipe 38 so as to close the main pipe part 39 side of the wellhead side mud pipe 1b and the wellhead side mud pipe 2b. It has become. As a result, the main pipe portion 39 of the T-shaped pipe 38 is removed from the wellhead-side mud pipe 1b and the wellhead-side mud pipe 2b (existing mud pipe 3 for addition), and the main pipe 39 of the T-shaped pipe 38 and the wellhead side It is possible to newly add the additional mud pipe 3 between the mud pipe 1b and the front end of the wellhead side mud pipe 2b (existing additional mud pipe 3).

  Using the hoist disposed on the first frame 14 of the first carriage 11, the additional mud pipe 3 is lifted from the additional mud pipe stock field 21 provided on the first carriage 11, and the additional mud pipe 3 is added. Are connected (added) between the main pipe 39 of the T-shaped pipe 38 and the front end of the wellhead side mud pipe 1b and the wellhead side mud pipe 2b (existing mud pipe 3 for addition). Yes.

  On the other hand, the plug mechanism 37 plugs the addition mud pipe 3 into the well mouth side mud pipe 1b and the well mouth side mud pipe 2b (the existing addition mud pipe 3), and then plugs 42 using a wire or fluid pressure. Is recovered in the main pipe section 39 of the T-shaped pipe 38, and then the shut valve 41 provided in the branch pipe section 40 of the T-shaped pipe 38 is opened again. Thereby, the wellhead-side mud pipe 1b and the wellhead-side mud pipe 2b are released again, and the mud pipe 1, the face side mud pipe 1a, the well side mud pipe 1b, and the mud pipe 2 (face side mud). It is possible to circulate the shield machine by circulating mud water in the pipe 2a and the wellhead side mud pipe 2b).

  Next, the operation of this embodiment will be described.

  Hereinafter, the procedure for adding the addition mud pipe 3 to the mud pipe 1 (the well-end mud pipe 1b) will be described with reference to FIG. The procedure for adding the addition mud pipe 3 to the mud pipe 2 (wellhead side mud pipe 2b) is substantially the same as the following procedure, and is therefore omitted.

  In the mud pipe extension device 10 according to the present embodiment, as shown in FIG. 4A, the flexible hose 17 is arranged on the horizontal plane 13 (flat plate 28) of the first frame 14 and the horizontal plane 15 of the second frame 16. When the shield machine is advanced forward, the face-side mud pipe 1a is pulled forward by the shield machine.

  As the face side mud pipe 1a moves forward, as shown in FIG. 4B, the first carriage 11 to which the face side mud pipe 1a is fixed travels forward, and the face side mud pipe 1a and the wellhead side mud pipe 1b are separated in the longitudinal direction of the tunnel T, and the flexible hose 17 is placed on the horizontal surface 13 (flat plate 28) of the first frame 14 and the horizontal surface 15 (flat plate 35) of the second frame 16. It is slid so that its bending radius R becomes smaller. At this time, in the mud pipe 1 (the face side mud pipe 1a, the well side mud pipe 1b), the supply of mud water to the shield machine is continued via the flexible hose 17. In addition, since the rear end of the wellhead-side mud pipe 1b is connected to a muddy water supply device (not shown) provided at the wellhead, the wellhead-side mud pipe 1b is fixed to the tunnel T. Even if the side mud pipe 1a moves forward, the wellhead side mud pipe 1b does not move forward.

  When the shield machine is excavated by a predetermined distance (for example, a distance corresponding to the width of the segment 5 ring), the shield machine is temporarily stopped. The shut valve 41 is closed, and the plug mechanism 37 is used to drive the plug 42 into the wellhead side mud pipe 1b behind the flange 39f of the main pipe portion 39 of the T-shaped pipe 38 to close the wellhead side mud pipe 1b. The main pipe portion 39 of the T-shaped pipe 38 is removed from the wellhead-side mud pipe 1b (the existing muddy pipe 3 for addition), and then the second carriage 12 (T-shaped pipe 38) is moved forward.

  As shown in FIG. 4C, the mud for addition is provided between the main pipe portion 39 of the T-shaped pipe 38 of the plug mechanism 37 and the front end of the well-end side mud pipe 1b (existing mud pipe 3 for addition). A space 43 for inserting (adding) the water pipe 3 is formed, and a new addition mud pipe 3 is added to the space 43 using a hoist disposed on the first frame 14 of the first carriage 11. Deploy. The new addition mud pipe 3 is connected between the main pipe portion 39 of the T-shaped pipe 38 and the front end of the well-end side mud pipe 1b (the existing addition mud pipe 3).

  Here, in the present embodiment, the face-side mud pipe (face-side mud pipe 1a, face-side mud pipe 2a) and the well-side mud pipe (well-side mud pipe 2a, well-side mud pipe 2b) Flexible hoses 17 and 18 opened between them are curved along the horizontal plane 13 of the first frame 14 and the horizontal plane 15 of the second frame 16 located above the tunnel T, Since the flexible hoses 17 and 18 are not wound around a drum or a reel, the flexible hoses 17 and 18 do not occupy a space in the vertical direction of the tunnel T, and the mud pipe extension device 10 is entirely arranged. A compact configuration in the vertical direction of the tunnel T can be achieved.

  In the present embodiment, since the plug mechanism 37 for releasing and closing the wellhead-side mud pipe (wellhead-side mud pipe 1b, wellhead-side mud pipe 2b) is arranged in the second carriage 12, The plug mechanism 37 does not need to be disposed on the subsequent carriages of the first carriage 11 and the second carriage 12, and the entire mud pipe adding device 10 can be made compact with respect to the longitudinal direction of the tunnel T.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to take other various embodiment.

  For example, in the above-described embodiment, the flexible hoses 17 and 18 are substantially U-shaped so as to protrude backward along the horizontal plane 13 of the first frame 14 and the horizontal plane 15 of the second frame 16. However, the present invention is not limited to this, and the flexible hoses 17 and 18 are disposed along the horizontal plane 13 of the first frame 14 and the horizontal plane 15 of the second frame 16, respectively. Alternatively, it may be arranged in a substantially U-shape so as to be convex in the width direction of the tunnel T.

FIG. 1 is a side sectional view of a mud pipe adding device according to an embodiment of the present invention. 2 is a view taken along the line II-II in FIG. 3 is a view taken along the line III-III in FIG. FIG. 4A to FIG. 4C are step diagrams for explaining the procedure for adding the addition mud pipe to the mud pipe (mud pipe).

Explanation of symbols

1 Mud pipe (mud pipe)
1a Face side mud pipe (face side mud pipe)
1b Wellhead side mud pipe (wellhead side mud pipe)
2 Mud pipe (mud pipe)
2a Face side mud pipe (face side mud pipe)
2b Wellhead side mud pipe (wellside mud pipe)
DESCRIPTION OF SYMBOLS 10 Muddy water pipe extension apparatus 11 1st trolley 12 2nd trolley 13 Horizontal surface 14 1st frame 15 Horizontal surface 16 2nd frame 17 Flexible hose 18 Flexible hose 37 Plug mechanism T Tunnel

Claims (2)

In a device for adding a muddy water pipe that sends muddy water to a shield machine that constructs a tunnel or discharges muddy water containing excavated sediment from the shield machine, as the shield machine is dug,
The face side mud pipe that forms the face side of the mud pipe, the well side mud pipe that forms the well side part of the mud pipe, and can be moved along the longitudinal direction of the tunnel pulled by the shield machine. The first bogie to which the rear end of the face side mud pipe is fixed, and the first bogie arranged on the first bogie and movable along the longitudinal direction of the tunnel, the front end of the well side mud pipe being fixed A second frame, a first frame standing on the first carriage and having a horizontal plane located on the upper portion of the tunnel, and a horizontal plane standing on the second carriage and located on the upper portion of the tunnel. A state of being interposed between the second frame, the face side mud pipe, and the well side mud pipe, and being curved along the horizontal plane of the first frame and the horizontal plane of the second frame Of the shield machine A muffle pipe addition of a shield machine, comprising a flexible hose for allowing the face side mud pipe and the well side mud pipe to be separated in the longitudinal direction of the tunnel as the machine advances. apparatus. Provided with a plug mechanism for releasing and closing the wellhead side mud pipe,
The mud pipe adding device for a shield machine according to claim 1, wherein the plug mechanism is disposed on the second carriage.

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