JP2013194747A - Casting method of stream tunnel and carrying device of stream tunnel pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casting method for a stream tunnel that effectively utilizes a carrying device of a stream tunnel pipe, thereby improving work efficiency and achieving facility cost reduction.SOLUTION: At an assembly site A away from a casting place B where a stream tunnel 10 in which a pipe 7 is embedded in concrete 10a is casted, a plurality of partition walls 8 are assembled together at an outer peripheral part of a falsework material 5 supported in advance by a mount 4 on a truck 3 to form a follow-on pipe 7. The truck 3 is moved from the assembly site A to the casting plate B together with the mount 4 and falsework material 5 along a rail 2. An end part 7a of the follow-on pipe 7 is connected to an end part 7b of the pipe 7 of a preceding stream tunnel 10 that is already installed in a casting place B. The concrete is fed to a casting chamber provided between the follow-on pipe 7 and a formwork arranged around the follow-on pipe 7 to cast the follow-on stream tunnel in which the follow-on pipe 7 is embedded in the concrete. The truck 3 is returned to the assembly place A from the casting site B together with the mount 4 and falsework material 5 along the rail 2. The falsework material 5 is separated from the pipe of the follow-on stream tunnel, and then the follow-on stream tunnel is connected to the preceding stream tunnel 10. By the present invention, work efficiency is improved and facility cost is reduced.

Description

  The present invention relates to a method of driving a flowing water tunnel in which a pipe is embedded in concrete, for example, a dam drainage tunnel, and a pipe conveying apparatus suitable for implementing such a flowing water tunnel driving method.

  Conventionally, when a running water tunnel having a pipe embedded in concrete as shown in Patent Document 1 below, for example, first, an assembly site outside a tunnel is separated from a tunnel tunnel placement site where a preceding running water tunnel is installed. Then, a scaffold is assembled, and a plurality of dividing walls are assembled together with a supporting material on a retracting base to form a subsequent pipe. Next, the platform is pulled into the tunnel pit site with a winch, etc., along with the subsequent pipe and supporting material, and the end of the subsequent pipe is connected to the end of the preceding running tunnel at the tunnel pit site. In addition, a saddle type frame is disposed on the outer periphery of the subsequent tube. Then, the subsequent running water tunnel is driven while the drawing frame is buried in the formwork and connected to the preceding running water tunnel. After that, the support material is dismantled and removed from the pipe of the subsequent flowing water tunnel.

JP 2000-18431 A

  In the conventional running water tunnel placement method described above, the scaffolding and supporting materials assembled in the pipe are dismantled and removed every time the running water tunnel is placed, or the scaffolding assembled at the tunnel off-site assembly site is installed in all running water tunnels. After completion, it was necessary to dismantle and remove it, and it was necessary to bury the retractable frame that remained in the formwork every time the running water tunnel was installed. Therefore, they caused a decrease in work efficiency and a rise in equipment costs.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method for placing a flowing water tunnel that effectively uses a conveying device for a pipe for flowing water tunnel, and to improve work efficiency and reduce equipment costs.

The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 3) of the embodiments described later.
The invention according to claim 1 connects the subsequent flowing water tunnel (11) to the preceding flowing water tunnel (10) in the following procedure.

  First, in the assembly place (A) separated from the placement place (B) where the running water tunnel (10) in which the pipe (7) is embedded in the concrete (10a) is placed, the platform on the carriage (3) ( A plurality of dividing walls (8) are assembled with each other at the outer periphery of the support material (5) previously supported in 4) to form the subsequent pipe (7).

  Secondly, the cart (3) is moved from the assembly location (A) to the placement location (B) together with the gantry (4) and the supporting material (5). The end (7a) of the succeeding pipe (7) is connected to the end (7b) of the pipe (7) of the preceding flowing water tunnel (10) installed in the pipe.

  Third, the mold (9) is disposed on the outer periphery of the subsequent pipe (7), and a placement chamber (9a) is provided between the subsequent pipe (7) and the mold (9). The concrete (11a) is supplied to the placement chamber (9a), and the subsequent flowing water tunnel (11) in which the subsequent pipe (7) is embedded in the concrete (11a) is placed.

  Fourth, the carriage (3) is moved back together with the gantry (4) and the supporting material (5) from the placement place (B) to the assembly place (A), and then the pipe of the subsequent flowing water tunnel (11). Remove the support material (5) from (7).

  According to the invention of claim 1, the support material (5) previously supported by the gantry (4) on the carriage (3) is effectively re-used many times until the installation of all the flowing water tunnels (10, 11) is completed. Since it can be utilized, unlike the prior art, it is possible to eliminate the work of dismantling and removing scaffolds and supporting materials and burying the pedestal at the time of placing, improving work efficiency and reducing equipment costs.

  In the invention according to claim 2, the end portion (7a) of the subsequent pipe (7) is connected to the end portion (7b) of the pipe (7) of the preceding flowing water tunnel (10) at the placement site (B). At the same time, of the carriages (3) respectively disposed below the ends (4a, 4b) of the gantry (4) on both sides in the reciprocating direction (X), 3) and the end (4a) of the gantry (4) are inserted into the pipe (7) of the preceding flowing water tunnel (10). According to the invention of claim 2, the preceding running water tunnel without causing the carriage (3) on the forward direction (XF) side and the end (4a) of the mount (4) to collide with the preceding running water tunnel (10). The end portion (7a) of the succeeding tube (7) can be connected to the end portion (7b) of the tube (7) of (10) in the closest proximity.

  The invention according to claim 3 (the conveying device for the pipe for flowing water tunnel) is suitable for carrying out the method for placing the flowing water tunnel according to the inventions of claims 1 and 2, and the pipe (7) is made of concrete (10a, 11a). A pipe (7) is formed by assembling a place (B) for placing a running water tunnel (10, 11) buried in the pipe and a plurality of dividing walls (8) constituting a part of the pipe (7). A carriage (3) reciprocating between the assembly place (A) to be moved, a pedestal (4) mounted on the trolley (3) and reciprocating with the trolley (3), and supported by the pedestal (4) And a support material (5) that reciprocates together with the carriage (3) and supports and holds each divided wall (8) when the divided walls (8) are assembled together to form a pipe (7). It is characterized by having.

According to the invention of claim 3, the running method of the flowing water tunnel according to the invention of claim 1 and claim 2 can be smoothly carried out by using the transfer device (1).
According to a fourth aspect of the present invention, the carriage (3) is disposed below the ends (4a, 4b) of the gantry (4) on both sides in the reciprocating direction (X). 4) The upper support material (5) is disposed between the carriages (3) on both sides, and the carriage (3) on the forward direction (XF) side of the carriages (3) on both sides is divided into a plurality of divisions. A support position (P) that protrudes outward from the outer periphery of the support material (5) that supports and holds the wall (8) toward the rail (2), and a retreat position (Q) that retreats inward from the outer periphery. It is characterized by being able to take. According to the invention of claim 4, when the carriage (3) on the forward movement direction (XF) side and the end (4a) of the mount (4) are inserted into the pipe (7) of the preceding flowing water tunnel (10). In addition, the carriage (3) on the forward movement direction (XF) side changes from the support position (P) to the retreat position (Q) and does not collide with the preceding flowing water tunnel (10), so that the preceding flowing water tunnel (10) The end portion (7a) of the succeeding tube (11) can be connected to the end portion (7b) of the tube (7) in the closest proximity.

  The invention according to claim 5 is characterized in that the end (4a) on the forward direction (XF) side of the ends (4a, 4b) on both sides in the reciprocating direction (X) of the gantry (4) is the preceding flowing water tunnel. When inserted into the pipe (7) of (10), an auxiliary vehicle (6) supported in the pipe (10) is provided at the end (4a) of the mount (4). Yes. According to the invention of claim 5, when the carriage (3) on the forward direction (XF) side and the end (4a) of the mount (4) are inserted into the pipe (7) of the preceding flowing water tunnel (10) Furthermore, the gantry (4) can be supported with good stability by the auxiliary vehicle (6).

  INDUSTRIAL APPLICABILITY According to the present invention, it is possible to improve work efficiency and reduce equipment costs by the method of placing the flowing water tunnel (10, 11) using the conveying device (1) of the flowing water tunnel pipe (7).

(A) is a schematic cross-sectional view showing a state in which a plurality of dividing walls are assembled with each other by a pipe transport device at a tunnel outside assembly site separated from a tunnel tunnel placement site, and a subsequent pipe is formed. In the pipe conveyance device, (a) is a schematic partial cross-sectional view taken along the line A, and (c) is a schematic cross-sectional view taken along the line Ea (a) at the tunnel tunnel placement site. (A) is a schematic cross-section showing a state in which the pipe transport device is moved from the tunnel out-of- tunnel assembly site to the tunnel tunnel placement site, and the end of the subsequent pipe is connected to the end of the pipe of the preceding flowing water tunnel FIG. 6B is a diagram illustrating a case where a vertical frame is disposed on the outer periphery of a subsequent tube around the above-described pipe transfer device at a tunnel tunnel installation site, and is disposed between the subsequent tube and the vertical frame. It is a schematic sectional drawing which shows the state which provided the chamber, (c) is a schematic sectional drawing which shows the state which laid the subsequent flowing water tunnel which supplied concrete to the placement room and embed | buried the subsequent pipe | tube in concrete. is there. (A) is schematic sectional drawing which shows the state which cancelled | released support of the support material with respect to the pipe | tube of a subsequent flowing water tunnel in a tunnel mine placement place, (b) is said pipe conveyance apparatus from a tunnel mine placement place. It is a schematic sectional view showing a state in which the support material is separated from the pipe of the subsequent flowing water tunnel after being moved back to the tunnel outside-hole assembly site.

  As shown in the drawings, a method for placing a flowing water tunnel according to an embodiment of the present invention uses a conveying device for a flowing water tunnel to connect a subsequent flowing water tunnel to a preceding flowing water tunnel in the following procedure. .

  A pipe conveying device 1 shown in FIG. 1 (a) includes a carriage 3 that reciprocates along a tunnel pit rail 2 mounted on a concrete bottom inside and outside the tunnel mine T shown in FIG. 1 (c), A gantry 4 that is placed on the carriage 3 and reciprocates with the carriage 3, and a support material 5 that is supported in advance by the gantry 4 and reciprocates with the carriage 3 are provided. The trolleys 3 (3a, 3b) are respectively disposed below the ends 4a, 4b of the gantry 4 on both sides in the reciprocating direction X. As the cart 3 (3a, 3b), metal wheels, rubber tires, or the like are employed. The support material 5 on the gantry 4 is disposed between the carriages 3 (3a, 3b) on both sides, and has an annular frame 5a on the outer peripheral portion. Of these trolleys 3 (3 a, 3 b) on both sides, the trolley 3 a disposed on the forward direction XF side and below the end 4 a of the gantry 4 is outward from the outer periphery of the support material 5 toward the rail 2. Can be moved to the gantry 4 so that a support position P projecting inward and a retracted position Q retracted inward from the outer peripheral portion and separated from the rail 2 can be taken. Under the end 4a of the gantry 4, an auxiliary vehicle 6 is provided adjacent to the forward movement direction XF side of the carriage 3a on the forward movement direction XF side.

  As shown in FIG. 1 (a), the preceding pipe 7 (iron pipe) has already been driven by the concrete 10a as the preceding flowing water tunnel 10 in the tunnel pit driving place B. As shown in FIG. 1 (b), the plurality of divided walls 8 are transported into the frame of the support material 5 of the pipe transfer device 1 at the tunnel outside assembly site A separated from the tunnel tunnel placement site B. A subsequent pipe 7 (iron pipe) assembled by welding to each other at the outer peripheral portion of the body 5a is formed.

Of the divided walls 8, the lower divided wall 8 a is conveyed to the support material 5 of the pipe conveying device 1 as follows.
At the tunnel off-site assembly location A, the traversing rail intersects the tunnel pit rail 2, and the carriage on which the lower dividing wall 8a is placed at the carry-in position is transported to the tunnel pit rail 2 by the traverse rail, The carriage is lifted together with the lower dividing wall 8a and supported on the rail 2 for the tunnel mine. Next, the carriage is transported together with the lower dividing wall 8a to the lower side of the gantry 4 by the rail 2 for the tunnel mine, and the lower dividing wall 8a is lifted from the carriage between the carriages 3 (3a, 3b) by the support. It welds to the other dividing wall 8 attached to the construction material 5. FIG. Thereafter, the carriage that is separated from the lower dividing wall 8a moves along the rail 2 for the tunnel mine and the traverse rail and returns to the carry-in position. The subsequent tube 7 is assembled by repeating the operation a plurality of times.

  As shown in FIG. 2 (a), the carriage 3 (3a, 3b) of the pipe transfer device 1 is moved from the tunnel off-site assembly location A to the tunnel underground placement location B along the rail 2 together with the mount 4 and the supporting material 5. The forward movement direction XF side carriage 3a is moved closer to the preceding flowing water tunnel 10, and the end 4a of the forward movement direction XF side mount 4 is inserted into the pipe 7 of the preceding flowing water tunnel 10, The auxiliary wheel 6 is supported in the pipe 7. Thereafter, the cart 3a on the forward movement direction XF side is moved from the support position P to the retreat position Q. In this state, the gantry 4 is supported by the trolley 3 (3b) and the auxiliary vehicle 6. Further, the carriage 3 (3b) of the pipe transfer device 1 is moved forward along the rail 2 together with the gantry 4 and the support material 5, and the carriage 3a at the retreat position Q is also inserted into the pipe 7 of the preceding flowing water tunnel 10. And the end part 7a of the succeeding pipe | tube 7 is faced | matched with the edge part 7b of the pipe | tube 7 of the preceding flowing water tunnel 10, and it welds and connects from the inner peripheral side.

As shown in FIG. 2 (b), a saddle type frame 9 is disposed on the outer periphery of the subsequent tube 7, and a placement chamber 9 a is provided between the subsequent tube 7 and the vertical frame 9.
As shown in FIG. 2 (c), the concrete 11a is supplied to the placement chamber 9a, and the subsequent flowing water tunnel 11 in which the subsequent pipe 7 is embedded in the concrete 11a is placed.

  As shown in FIG. 3A, after the concrete 11a is cured, the frame 5a of the support material 5 with respect to the pipe 7 of the subsequent flowing water tunnel 11 is reduced in diameter at the tunnel pier placement site B to release the support state. .

  As shown in FIG. 3 (b), when the pipe transfer device 1 is moved backward from the tunnel tunnel placement site B to the tunnel tunnel outside assembly site A in order to move away from the subsequent flowing water tunnel 11, the carriage 3 (3b) In a state where the gantry 4 is supported by the auxiliary vehicle 6, the trolley 3 (3 b) moves in a direction in which the gantry 4 and the support material 5 are pulled out from the pipe 7. When the carriage 3a at the retracted position Q is detached from the pipe 7 while being in the support state, the carriage 3a is moved from the retracted position Q to the support position P and supported on the rail 2. Thereafter, while supporting the gantry 4 with the trolley 3 (3a, 3b), the auxiliary vehicle 6 is detached from the inside of the pipe 7, and the trolley 3 (3a, 3b) is tunneled along the rail 2 together with the gantry 4 and the supporting material 5. Move to the off-site assembly location A.

This embodiment has the following effects.
(1) In the pipe transfer device 1, the support material 5 previously supported by the frame 4 on the carriage 3 (3a, 3b) can be effectively reused many times until the installation of all the flowing water tunnels 10, 11 is completed. As a result, it is possible to eliminate the work of dismantling and removing scaffolds and support materials and burying the pedestal at the time of placing, thereby improving work efficiency and reducing equipment costs. Reduction and safety, and also reduces damage to the inner surface of the pipe during construction, leading to quality improvement.

  (2) Since the carriage 3a on the forward direction XF side and the end 4a of the gantry 4 are inserted into the pipe 7 of the preceding flowing water tunnel 10, the carriage 3a on the forward direction XF side and the end 4a of the gantry 4 precede. Without colliding with the flowing water tunnel 10, the end portion 7 a of the succeeding pipe 7 can be connected closest to the end portion 7 b of the pipe 7 of the preceding flowing water tunnel 10.

  (3) When the carriage 3a on the forward movement direction XF side and the end 4a of the gantry 4 are inserted into the pipe 7 of the preceding flowing water tunnel 10, the carriage 3a on the forward movement direction XF side is retracted from the support position P. Since the gantry 4 moves forward while the auxiliary vehicle 6 is supported by the pipe 7 of the preceding running water tunnel 10, the carriage 3a on the forward movement XF side does not collide with the preceding flowing water tunnel 10, It is possible to connect the end portion 7a of the subsequent pipe 7 to the end portion 7b of the preceding flowing water tunnel 10 so as to be closest to each other.

  (4) When the carriage 3a on the forward direction XF side and the end 4a of the gantry 4 are inserted into the pipe 7 of the preceding flowing water tunnel 10, the gantry 4 is stabilized by the auxiliary car 6 supported in the pipe 7. Can support well.

  DESCRIPTION OF SYMBOLS 1 ... Pipe conveyance apparatus, 2 ... Rail, 3, 3a, 3b ... Cart, 4 ... Mount, 4a, 4b ... End of mount, 5 ... Support material, 6 ... Auxiliary vehicle, 7 ... Pipe, 7a, 7b ... End of pipe, 8 ... dividing wall, 9 ... vertical formwork, 9a ... casting room, 10 ... preceding running water tunnel, 11 ... following running water tunnel, 10a, 11a ... concrete, A ... tunnel outside tunnel assembly place, B: Tunnel tunnel placement location, X: Reciprocating direction, XF: Forward direction, P: Support position, Q: Retraction position.

Claims (5)

In an assembly place that is separated from the place where the running water tunnel with the pipe embedded in the concrete is placed, a plurality of dividing walls are assembled to each other at the outer periphery of the support material pre-supported by the mount on the carriage, and the subsequent pipe Form the
The carriage is moved forward from the assembly site to the installation site together with the gantry and support material, and the end of the subsequent pipe is connected to the end of the previous running water tunnel already installed at the installation site. And
A mold is arranged on the outer periphery of the subsequent tube, and a placing chamber is provided between the subsequent tube and the mold,
The concrete was supplied to the casting room, and the subsequent running water tunnel with the subsequent pipe buried in the concrete was cast,
The carriage is moved back together with the gantry and support material from the placement location to the assembly location, and the support material is separated from the pipe of the subsequent flowing water tunnel,
A running method for a running water tunnel, characterized in that a subsequent running water tunnel is connected to a preceding running water tunnel.   When connecting the end of the subsequent pipe to the end of the pipe of the preceding running water tunnel at the placement site, among the carts respectively disposed below the end of the gantry on both sides in the reciprocating direction, 2. The running method of the flowing water tunnel according to claim 1, wherein an end of the carriage and the mount on the forward direction side is inserted into a pipe of the preceding flowing water tunnel. A carriage that reciprocates between a placement site where a running water tunnel in which a pipe is embedded in concrete is placed, and an assembly location where a plurality of dividing walls constituting a part of the pipe are assembled together to form a pipe;
A stand placed on the carriage and reciprocating with the carriage;
And a support material for supporting and holding each divided wall when the divided walls are assembled together to form a pipe supported by the carriage and reciprocating with the carriage. Conveying device. The carts are arranged on both sides in the reciprocating direction on the lower side of the end of the platform, and the support material on the platform is arranged between the carts on both sides,
Of these two trolleys, the trolley on the forward direction side has a support position that protrudes outward from the outer periphery of the support material that supports and holds the plurality of dividing walls, and a retreat position that retreats from the outer periphery. It can take, The conveyance apparatus of the pipe for flowing water tunnels of Claim 3 characterized by the above-mentioned.   When the end on both sides in the reciprocating direction of the gantry is inserted into the pipe of the preceding running water tunnel, the auxiliary vehicle supported in the pipe is provided at the end of the gantry. The conveying device of the pipe | tube for flowing water tunnels of Claim 4 characterized by the above-mentioned.