JP2010163795A - Backward truck, method of moving backward truck, method of constructing tunnel, and tunnel constructed by the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide backward truck, a method of moving the backward truck, and a method of constructing a tunnel using the backward truck which scarcely requires labor, and can be performed concurrently with operations incident to the construction of the tunnel. <P>SOLUTION: The backward truck 1 includes first to third frames 11, 12, 13, a pair of rails 16 laid down on the ground of the tunnel 2, wheels 17 for traveling on the rails 16, a rail feeder 18 for moving the rails 16 in the advancing direction, lifts 19 for vertically moving the frames 11, 12, 13, respectively, and horizontally moving devices 20 which are installed between the frames 11, 12, 13 and the lifts 19, respectively, and move the frames 11, 12, 13 in a direction orthogonal to the advancing direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rear carriage equipped with rear equipment installed in a tunnel, a rear carriage movement method, a tunnel construction method, and a tunnel constructed by the method.

  When constructing a tunnel, soil discharging means such as a belt conveyor for discharging excavated sediment generated by tunnel excavation, air conditioning means for ventilating the inside of the tunnel, and substation means for supplying power to the equipment in the tunnel The rear equipment such as is moved to the face side as the face progresses.

For example, Patent Document 1 discloses a tension support carriage that is equipped with earth removing means such as a belt conveyor and that tensions the belt by stretching the front end of the belt conveyor toward the face. This tensile support carriage can be moved while a certain tensile force is applied to the belt conveyor.
JP 2000-27596 A

  However, in the method described in Patent Document 1 described above, it is possible to move the earth discharging means such as a belt conveyor to the face side, but it is not possible to move other rear equipment such as air-conditioning means and substation means to the face side. Since this is not possible, there has been a problem that, for example, it is necessary to stop all work for about half a day within one week and to move the rear equipment such as air-conditioning means and substation means. In addition, this moving work is extremely complicated and requires manual work, in which the power cable is cut once and then joined together, so that it must be performed by all workers.

  Therefore, the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to make it possible to easily move the rear carriage toward the face of the tunnel.

  In order to achieve the above object, the rear carriage of the present invention supplies power to the earth removing means for discharging excavated sediment generated by tunnel excavation, the air conditioning means for ventilating the inside of the tunnel, and the equipment in the tunnel. It is a rear carriage for mounting a rear facility having at least one of substation means for moving and moving in the tunnel, and a gantry for placing the rear facility, and laid in the tunnel A pair of rails, a wheel attached to the gantry and traveling on the rail, a rail feeder attached to the gantry and moving the rail in the longitudinal direction of the rail, and the gantry Elevating device for moving in the vertical direction, and horizontal moving device for moving the gantry and the rail in an orthogonal direction perpendicular to the tunnel axis Characterized in that it comprises a.

  According to the rear carriage of the present invention, since the rail feeder is provided, the rail laid in the tunnel can be moved in the longitudinal direction of the rail. This eliminates the need to add a new rail.

  In addition, since the horizontal movement device is provided, it is possible to move the gantry and the rail in the orthogonal direction perpendicular to the tunnel axis, that is, in the width direction of the tunnel. Therefore, it can be moved along the curve in the tunnel having the curve.

  Further, in the present invention, if the holding tool for holding the width of the pair of rails is provided, the rail width can be kept constant even if the rail is moved, so that the rear carriage may be derailed. Therefore, the rear carriage can be safely driven.

  Further, in the present invention, the rail feeding device is installed along the rail, and has a chain that has one end connected to the tip end of the rail and the other end connected to the base end of the rail, and the chain. It is good also as providing the motor which has a sprocket which fits.

  According to the present invention, the rail feeder is composed of a motor having a sprocket and a chain, and these are inexpensive, so that the capital investment cost can be reduced. In addition, the simple configuration facilitates maintenance.

  In the present invention, the horizontal movement device is provided on the side of the wheel and the rail, and extends downward from the lower surface of the gantry. The lower end of the horizontal movement device is moved upward by the lifting device. When the wheel is lifted from the rail and moved, a rail guide located on the side of the rail is installed between the gantry and the elevating device, and the gantry is attached to the elevating device. It is good also as providing the slide apparatus for moving to the said orthogonal direction.

  According to the present invention, when the gantry is moved in the orthogonal direction by the slide device, the rail guide is also moved at the same time. Therefore, the rail is guided by the rail guide and can be similarly moved in the orthogonal direction. Further, when the rail is moved in the longitudinal direction of the rail, the rail moves along the rail guide, so that the moving direction of the rail is not shifted. Therefore, it is possible to save time and labor for correcting the shifted rail. Moreover, there is no risk of the rear carriage derailing, and the rear carriage can be run safely.

  Further, in the present invention, if it is further provided with a driving means for rotating the wheel and is capable of self-propelling, a heavy machine that has conventionally pulled the rear carriage is not required, so that the heavy machine is in operation. Can move.

  The rear carriage moving method of the present invention includes a soil discharging means for discharging excavated sediment generated by tunnel excavation, an air conditioning means for ventilating the inside of the tunnel, and a substation for supplying power to the equipment in the tunnel. A pedestal for mounting rear equipment having at least one of the means; a pair of rails laid in the tunnel; a wheel attached to the pedestal and traveling on the rail; and the pedestal A rail feeding device for moving the rail in the longitudinal direction of the rail, an elevating device for moving the gantry in the vertical direction, and the gantry and the rail orthogonal to the tunnel axis. In a moving method of a rear carriage with a horizontal moving device for moving in an orthogonal direction, the lifting device is moved until the wheels are separated from the rail. The ascending step of raising the gantry and holding the gantry as it is, the rail feeding step of moving the rail in the longitudinal direction by the rail feeding device, and the orthogonality of the gantry and the rail by the horizontal moving device A horizontal movement step of moving the frame in a direction, a lowering step of lowering the frame until the wheels are placed on the rail by the lifting device, and the frame traveling on the rail toward the face side of the tunnel or the wellhead side And a traveling direction moving step.

According to the moving method of the rear carriage of the present invention, since the rail feeding process is provided, the rail laid in the tunnel can be moved in the longitudinal direction of the rail. This eliminates the need to add a new rail.
Moreover, since the moving direction moving process is provided, it can move along this rail.
Furthermore, since the horizontal movement process is provided, it is possible to move the gantry and the rail in the orthogonal direction orthogonal to the tunnel axis, that is, in the width direction of the tunnel. Therefore, it can be moved along the curve in the tunnel having the curve.

  The tunnel construction method of the present invention is the tunnel construction method, wherein the excavation step of excavating the tunnel, the primary spraying step of spraying concrete on the inner peripheral surface of the excavated tunnel, and a support work inside the sprayed concrete. A supporting step of installing, a secondary spraying step of spraying concrete on the side of the supporting work and placing a rock bolt, a soil discharging means for discharging excavated sediment generated by excavation of the tunnel, the inside of the tunnel A rear carriage moving step of moving a rear carriage equipped with a rear equipment having at least one of air conditioning means for ventilating and power transformation means for supplying power to equipment in the tunnel in the face direction of the tunnel; It is characterized by providing.

  According to the tunnel construction method of the present invention, since the rear carriage moving step of moving the rear carriage equipped with the rear equipment having at least one of the earth discharging means, the air conditioning means, and the substation means is provided, the rear equipment is used as the rear carriage. It can be moved while mounted.

  In the present invention, if the rear carriage moving process is performed in parallel with any one of the excavation process, the primary spraying process, the support process, and the secondary spraying process, a tunnel is constructed. The cycle time for work can be shortened.

  Further, in the present invention, the rear carriage includes a base for mounting the rear equipment, a pair of rails laid in the tunnel, and a wheel attached to the base and traveling on the rail. A rail feed device attached to the gantry for moving the rail in the longitudinal direction of the rail, an elevating device for moving the gantry in the vertical direction, and the gantry and the rail on the tunnel shaft. It is good also as providing the horizontal moving apparatus for moving to the orthogonal direction orthogonal to.

  According to the present invention, since the rail feeding device is provided, the rail laid in the tunnel can be moved in the longitudinal direction of the rail. This eliminates the need to add a new rail.

  In addition, since the horizontal movement device is provided, it is possible to move the gantry and the rail in the orthogonal direction perpendicular to the tunnel axis, that is, in the width direction of the tunnel. Therefore, it can be moved along the curve in the tunnel having the curve.

  The tunnel of the present invention is constructed by the tunnel construction method described above.

  According to the present invention, the rear carriage can be easily moved toward the face of the tunnel.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, a case where a tunnel is excavated by a blasting method will be described, but the present invention can also be applied to a case where a tunnel is excavated by a mechanical method.

FIG. 1 is an overall view showing an outline of a tunnel 2 in which a rear carriage 1 according to an embodiment of the present invention is installed.
As shown in FIG. 1, the rear equipment 3 mounted on the rear carriage 1 includes a soil discharging means 4 for discharging excavated sediment generated by blasting the face 2 a and an air conditioning means 5 for ventilating the inside of the tunnel 2. And substation means 6 for supplying power to the equipment in the tunnel 2.

  The earth discharging means 4 is, for example, a slide retractable belt conveyor 4a for receiving the excavated earth and sand discharged from the self-propelled crusher 7, and a continuous conveying the excavated earth and sand delivered to the slide retractable belt conveyor 4a to the wellhead. The belt conveyor 4b includes a control device 4c for controlling the belt conveyors 4a and 4b, an operation panel 4d for operating the control device 4c, and the like.

  The air-conditioning means 5 includes, for example, an air pipe 5b provided with a fan 5a for feeding dust in the tunnel 2 to the wellhead, a dust sensor 5c for measuring the amount of dust in the tunnel 2, and a dust sensor 5c. A control device 5d for adjusting the rotational speed of the fan 5a according to the measurement result, an operation panel 5e for operating the control device 5d, and the like.

  In addition, the transformer unit 6 includes, for example, a cubicle 6a, a distribution board 6b, a cable reel 6d for winding a power cable 6c, and the like.

  The rear carriage 1 on which the earth discharging means 4, the air conditioning means 5, and the power transformation means 6 are mounted is disposed closer to the wellhead than the self-propelled crusher 7. The rear carriage 1 is composed of first to third mounts 11, 12 and 13 (details will be described later), and these mounts are connected by connecting means 14 and 15. Specifically, the earth removal means 4 is mounted on the first base 11, the air conditioning means 5 is mounted on the second base 12, and the transformation means 6 is mounted on the third base 13.

  The earth discharging means 4 has a function of applying tension to the belt by pulling the front end portion of the continuous belt conveyor 4b toward the face and is installed on the first frame 11 closest to the face 2a. In the present embodiment, the air-conditioning means 5 is installed on the second gantry 12 and the transformer unit 6 is installed on the third gantry 13, but these may be installed in reverse.

2 and 3 are a front view and a side view of the rear carriage 1 according to the present embodiment, respectively. 2 and 3, the rear facility 3 is not shown, and only the rear carriage 1 is shown.
As shown in FIGS. 2 and 3, the rear carriage 1 travels on the first to third mounts 11, 12, and 13, the pair of rails 16 laid on the bottom of the tunnel 2, and the rails 16. A wheel 17 for moving the rail 16, a rail feeding device 18 for moving the rail 16 in the longitudinal direction of the rail, a lifting device 19 for moving the bases 11, 12, 13 up and down, and the bases 11, 12 , 13 and the rail 16 are provided with a horizontal movement device 20 for moving in the orthogonal direction perpendicular to the tunnel axis, that is, in the width direction of the tunnel 2.

  Each of the mounts 11, 12, and 13 is made of, for example, a plate-shaped steel plate, and the earth discharging means 4, the air conditioning means 5, and the transformer means 6 are installed on the upper surface.

  A pair of rails 16 is provided with a holder 21 for keeping the width between the rails 16 constant. The holder 21 is a belt-shaped iron plate, and both ends thereof are connected to the rail 16 by welding or the like.

  The lifting device 19 is an outrigger that can be expanded and contracted by hydraulic pressure, and is attached to the four corners of the lower surface of each of the gantry 11, 12, 13. By extending the elevating device 19, each of the gantry 11, 12, 13 moves upward, and the wheel 17 can be lifted from the rail 16.

  The rail feeder 18 is installed along the rail 16, a chain 22 having one end connected to the face end of the rail 16 and the other end connected to the well end of the rail 16, and a sprocket 26 that meshes with the chain 22. And a motor 23 having

  The chain 22 is a roller chain, and is spanned on a sprocket 26 attached to the rotating shaft of the motor 23. When the motor 23 is rotated in a predetermined direction (the arrow direction in FIG. 3), the length of the chain 22 disposed on the wellhead side is shortened and the length of the chain 22 disposed on the face side is reduced. Since it becomes long, the rail 16 moves to the face side. On the other hand, when the motor 23 is rotated in the direction opposite to the predetermined direction, the length of the chain 22 disposed on the face side is shortened and the length of the chain 22 disposed on the wellhead side is increased. The rail 16 moves to the wellhead side.

  The horizontal movement device 20 is installed between the rail guides 24 extending downward from the lower surfaces of the platforms 11, 12, 13 and between the platforms 11, 12, 13 and the lifting device 19. And a slide device 25 for moving the mounts 11, 12, 13 in the width direction of the tunnel 2. As the slide device 25, a screw jack that can be manually operated was used.

  The rail guides 24 provided on the lower side of the mounts 11, 12, 13 are provided on both sides in the axle direction of the wheels 17, and the lower ends thereof extend to the vicinity of the base end portion of the rails 16. When traveling on the rail 16 with the wheel 17, the rail guide 24 is located on both the left and right sides of the rail 16, so that the wheel 17 can be prevented from derailing from the rail 16. Further, even when the gantry 11, 12, 13 is lifted upward by the lifting device 19 and the wheel 17 is separated from the rail 16, the lower end of the rail guide 24 is positioned on both sides near the upper end of the rail 16. As a result, when the gantry 11, 12, 13 is lifted upward and the wheel 17 is lifted from the rail 16, the gantry 11, 12, 13 is moved in the width direction of the tunnel 12 by the slide device 25. And the rail 16 are guided by the rail guide 24 and moved in the width direction in the same manner. Therefore, the rail 16 is always located under the wheel 17.

  The rail guide 24 also has a function of guiding the rail 16 so that the direction does not shift when the rail 16 is moved to the face side or the wellhead side.

  Next, a method for constructing the tunnel 2 using the rear carriage 1 will be described. In the following embodiment, the case where it progresses in the tunnel 2 which has a curve toward the face side is demonstrated.

FIG. 4 is a process diagram showing the construction procedure of the tunnel 2 using the rear carriage 1 according to the present embodiment.
As shown in FIG. 4, the tunnel 2 includes an excavation step S <b> 10 for excavating the tunnel 2, a discharge step S <b> 20 for discharging excavated earth and sand generated by excavation to the outside of the tunnel 2, and concrete on the inner peripheral surface of the excavated tunnel 2. Primary spraying step S30, supporting step S40 for installing a support inside the sprayed concrete, secondary spraying step S50 for spraying concrete on the side of the support and placing a lock bolt, and rear equipment 3 It is constructed by repeatedly performing the rear carriage moving step S60 for advancing the rear carriage 1 on which is mounted. In this embodiment, back trolley | bogie movement process S60 was performed in parallel with secondary spraying process S50, for example. Since this secondary spraying step S50 can be performed with fewer artificial steps than the other steps S10 to S40, the rear carriage moving step S60 is performed in parallel with the secondary spraying step S50. Note that the rear carriage moving process S60 does not always have to be performed in parallel with the secondary spraying process S50, but in parallel with any one of the excavation process S10, the primary spraying process S30, the support process S40, and the secondary spraying process S50. You can do it.

  In addition, the rear carriage moving step S60 is not necessarily performed every time when performing the excavation step S10 to the secondary spraying step S50, but in the middle of repeating the excavation step S10 to the secondary spraying step S50 a plurality of times. You may perform cart movement process S60 only once. Specifically, during the day, the rear carriage movement process S60 may be performed only once while the excavation process S10 to the secondary spraying process S50 are repeated a plurality of times, and how often the rear carriage movement process is performed. Whether to perform S60 is appropriately determined for each site.

Below, back trolley | bogie movement process S60 which concerns on this embodiment is demonstrated in detail using drawing.
FIG. 5 is a process diagram showing a moving procedure of the rear carriage 1 according to the present embodiment. Moreover, FIGS. 6-13 is a figure which shows the movement procedure of the back trolley | bogie 1 which concerns on this embodiment.

  First, as shown in FIGS. 5 and 6, a lifting step S <b> 61 is performed in which the elevating device 19 is extended to move the mounts 11, 12, 13 upward until the wheels 17 are separated from the rails 16. In the ascending step S <b> 61, when the wheel 17 is separated from the rail 16, the extension of the lifting device 19 is stopped, and the gantry 11, 12, 13 is held as it is.

  Next, as shown in FIG. 7, the motor 23 of the rail feeding device 18 is rotated in the direction of the arrow in the figure, and the chain 22 arranged on the wellhead side is sent out to the face side, whereby the rail 16 is moved to a predetermined distance. A rail feed step S62 (see FIG. 5) is performed. In the present embodiment, the predetermined distance is, for example, the traveling distance of the face 2a in one day, but is not limited to this, and is appropriately determined at each site.

  Next, as shown in FIG. 8, the elevating device 19 is contracted, and the lowering step S <b> 63 (see FIG. 5) for moving the mounts 11, 12, 13 downward so that the wheels 17 are placed on the rails 16. To implement. In the descending step S63, when the wheel 17 is placed on the rail 16, the contraction of the lifting device 19 is stopped.

  Next, as shown in FIG. 9, a traveling direction moving step S <b> 64 (see FIG. 5) is performed in which the rear carriage 1 is pulled by a heavy machine in the tunnel 2 and travels to the face side (arrow direction in the figure). In the traveling direction moving step S64, for example, an excavator 8 for transporting excavated earth and sand to a crusher is used as a heavy machine used for towing.

  If the predetermined distance is longer than one stroke of the rail feeding device 18 and the rail 16 cannot be moved by only one rail feeding step S62, the ascending step S61 to the traveling direction moving step S64 are performed. Repeat.

  Next, as shown in FIG. 10, the elevating device 19 is extended, and the ascending step S65 (see FIG. 5) is performed in which the platforms 11, 12, 13 are moved upward until the wheels 17 are separated from the rails 16. In the ascending step S65, as in the above-described ascending step S61, when the wheel 17 is separated from the rail 16, the extension of the elevating device 19 is stopped and the bases 11, 12, 13 are held as they are.

  Next, as shown in FIGS. 11 and 12, the horizontal movement device 20 is extended to move the mounts 11, 12, and 13 in the width direction of the tunnel 2 (in the example of FIG. 11, the right side with respect to the face). A horizontal movement step S66 (see FIG. 5) is performed. In the horizontal movement step S66, the wheel 17 and the rail guide 24 also move in the same direction along with the movements of the mounts 11, 12, and 13. Further, when the rail guide 24 moves, the rail 16 existing between the rail guides 24 also moves in the same direction by the rail guide 24.

  Next, as shown in FIG. 13, a lowering step S <b> 67 (see FIG. 5) is performed in which the elevating device 19 is contracted to move the gantry downward so that the wheels 17 are placed on the rails 16. In the descending step S67, similar to the descending step S63 described above, when the wheel 17 is placed on the rail 16, the contraction of the lifting device 19 is stopped.

  If the distance that must be moved in the width direction of the tunnel 2 is longer than the stroke of the horizontal movement device 20 and cannot be moved by only one horizontal movement step S66, the steps from the rising step S65 to the lowering step S67 are performed. Repeat.

  According to the rear carriage 1 described above, since the rail feeding device 18 for moving the traveling rail 16 is provided, the rail 16 laid in the tunnel 2 can be sent out. Therefore, the work of adding a new rail 16 becomes unnecessary.

  Furthermore, since the rail 16 can be moved in the width direction by the horizontal movement device 20 provided in the rear carriage 1, the inside of the tunnel 2 having a curve can be moved along the curve.

  The rail feeder 18 is composed of a motor 23 and a chain 22 and these are inexpensive, so that the capital investment cost can be reduced. Moreover, since it is a simple apparatus, maintenance becomes easy.

  Further, when the rail 16 moves, the rail 16 moves along the rail guide 24, so that the moving direction of the rail 16 does not shift. Therefore, it is possible to save time and labor for correcting the shifted rail 16. Further, there is no risk of the rear carriage 1 derailing, and the rear carriage 1 can be safely run.

  Moreover, since the distance from the 1st mount frame 11 to the 2nd mount frame 12 and the distance from the 2nd mount frame 12 to the 3rd mount frame 13 are always constant, of the earth removal means 4, the air-conditioning means 5, and the transformation means 6 It is possible to save time and labor for replacing pipes and wiring.

  In the present embodiment, the case where the vehicle travels in the tunnel 2 having a curve has been described. However, when the vehicle travels in the tunnel 2 having no curve and only a straight line, the steps from the ascending step S65 to the descending step S67 are omitted. Can do.

  In the present embodiment, the case where the three carriages 11, 12, 13 are provided and the rear carriage 1 is installed as close to the side wall of the tunnel 2 as possible when passing through the curve in the tunnel 2 has been described. However, when there is no curve and the vehicle travels in the straight tunnel 2, all of the rear equipment 3 may be mounted on one frame.

  Moreover, in this embodiment, although the case where the back trolley 1 was moved by towing with the shovel car 8 was demonstrated, it is not limited to this, For example, the back trolley 1 is attached to the 1st mount frame 11. A self-propelled means consisting of a rechargeable battery for charging electricity while stopped and a motor capable of rotating the wheel 17 by the rechargeable battery is placed, and the rear carriage 1 is self-propelled by this self-propelled means. May be.

  Furthermore, in this embodiment, although the back facility 3 provided with the earth removal means 4, the air-conditioning means 5, and the electrical transformation means 6 was demonstrated, it is not limited to these, You may provide another means.

It is a general view which shows the outline of the tunnel in which the back trolley | bogie which concerns on embodiment of this invention was installed. It is a front view of the back trolley concerning this embodiment. It is a side view of the back trolley concerning this embodiment. It is process drawing which shows the construction procedure of the tunnel using the back trolley | bogie which concerns on this embodiment. It is process drawing which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment. It is a figure which shows the movement procedure of the back trolley | bogie which concerns on this embodiment.

DESCRIPTION OF SYMBOLS 1 Rear carriage 2 Tunnel 2a Face 3 Rear equipment 4 Earth removal means 4a Slide retractable belt conveyor 4b Continuous belt conveyor 4c Controller 4d Operation panel 5 Air-conditioning means 5a Fan 5b Wind pipe 5c Dust sensor 5d Controller 5e Operation panel 6 Transformer means 6a cubicle 6b distribution board 6c power cable 6d cable reel 7 self-propelled crusher 8 excavator 11 first mount 12 second mount 13 third mount 14 connection means 15 connection means 16 rail
17 Wheel 18 Rail Feeder 19 Lifting Device 20 Horizontal Movement Device 21 Holder 22 Chain 23 Motor 24 Rail Guide 25 Slide Device 26 Sprocket

Claims (10)

Rear equipment having at least one of earth discharging means for discharging excavated sediment generated by tunnel excavation, air-conditioning means for ventilating the inside of the tunnel, and substation means for supplying power to the equipment in the tunnel A rear carriage for moving the inside of the tunnel,
A stand for mounting the rear equipment;
A pair of rails laid in the tunnel;
Wheels attached to the gantry and running on the rails;
A rail feeder attached to the gantry and for moving the rail in the longitudinal direction of the rail;
A lifting device for moving the gantry in the vertical direction;
A rear carriage comprising a horizontal movement device for moving the gantry and the rail in an orthogonal direction orthogonal to the tunnel axis.   The rear carriage according to claim 1, further comprising a holder for holding a width of the pair of rails. The rail feeder is
A chain installed along the rail, one end connected to the tip of the rail and the other end connected to the base end of the rail;
The rear carriage according to claim 1, further comprising a motor having a sprocket that meshes with the chain. The horizontal movement device is:
The wheels and the rails are provided on the sides and extended downward from the lower surface of the gantry, and the lower end of the gantry is moved upward by the lifting device to lift the wheels from the rail. A rail guide located on the side of the rail,
The rear carriage according to claim 1, further comprising a slide device that is installed between the gantry and the lifting device and moves the gantry in the orthogonal direction with respect to the lifting device.   The rear carriage according to claim 1, further comprising drive means for rotating the wheel, and capable of self-propelling. Rear equipment having at least one of earth discharging means for discharging excavated sediment generated by tunnel excavation, air-conditioning means for ventilating the inside of the tunnel, and substation means for supplying power to the equipment in the tunnel A pair of rails laid in the tunnel, a wheel attached to the base and traveling on the rail, and attached to the base, the rail being attached to the rail A rail feed device for moving in the longitudinal direction, a lifting device for moving the gantry in the vertical direction, and a horizontal moving device for moving the gantry and the rail in an orthogonal direction perpendicular to the tunnel axis In the moving method of the rear carriage with
Raising the pedestal by the lifting device until the wheel leaves the rail, and holding the pedestal as it is;
A rail feeding step of moving the rail in the longitudinal direction by the rail feeding device;
A horizontal movement step of moving the gantry and the rail in the orthogonal direction by the horizontal movement device;
A lowering step of lowering the mount until the wheels are placed on the rail by the lifting device;
A moving method of a rear carriage, comprising: a moving direction moving step of moving the gantry on a rail toward a face side or a pit side of the tunnel. In the tunnel construction method,
An excavation process for excavating a tunnel;
A primary spraying step of spraying concrete on the inner peripheral surface of the excavated tunnel;
A supporting step of installing a supporting work inside the sprayed concrete;
A secondary spraying process in which concrete is sprayed on the side of the support work and a lock bolt is driven;
Rear having at least one of soil discharging means for discharging excavated sediment generated by excavation of the tunnel, air conditioning means for ventilating the inside of the tunnel, and substation means for supplying power to the equipment in the tunnel A tunnel construction method, comprising: a rear carriage moving step of moving a rear carriage equipped with equipment in a direction toward the face of the tunnel.   8. The tunnel according to claim 7, wherein the rear carriage moving process is performed in parallel with any one of the excavation process, the primary spraying process, the support process, and the secondary spraying process. Construction method. The rear carriage is
A stand for mounting the rear equipment;
A pair of rails laid in the tunnel;
Wheels attached to the gantry and running on the rails;
A rail feeder attached to the gantry and for moving the rail in the longitudinal direction of the rail;
A lifting device for moving the gantry in the vertical direction;
The tunnel construction method according to claim 7, further comprising a horizontal movement device for moving the gantry and the rail in an orthogonal direction orthogonal to the tunnel axis.   A tunnel constructed by the tunnel construction method according to claim 7.

Images