JP3438208B2 - Tunnel construction equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can shorten the construction period.
Related to tunnel construction equipment . 2. Description of the Related Art With the shortage of skilled workers and the aging of construction workers, harsh working conditions are required especially in tunnel construction. For this reason, it is becoming difficult to secure workers in tunnel construction. In order to make tunnel construction in this harsh working environment attractive, it is necessary to increase the size of the machinery,
Labor saving is required. Therefore, in recent years, a multifunctional work gantry (gantry jumbo) has been proposed.
This is a tunnel construction device. [0003] Various types of tunnel construction devices have been proposed. Among them, rock drilling means for forming drilling holes in the face of the tunnel and rocks crushed by blasting are loaded into the tunnel. Some have a loading / unloading means for transporting to the side. In the construction of a tunnel by this tunnel construction device, first, a drilling hole for charging is formed on a face of the tunnel by rock drilling means, and the drilling is charged to crush the face. Next, the process of carrying out the shearing of the crushed face by the loading / unloading means to the loading pit side and then spraying concrete on the wall surface of the tunnel to perform lining is repeated. [0004] However, in recent years, increasingly,
There is a strong demand for shortening the construction period, and a tunnel construction method and a tunnel construction apparatus capable of further shortening the construction period are required. However, in the tunnel construction method and the tunnel construction apparatus as described above, it is difficult to further shorten the construction period. [0005] In view of the above circumstances, an object of the present invention is to provide a tunnel construction apparatus capable of further shortening the construction period. [0007] A tunnel construction apparatus according to the present invention has a work gantry, and the work gantry includes rock drilling means for drilling a hole in a face of the tunnel. A concrete spraying means for spraying concrete on a wall surface of the tunnel, a transport conveyor penetrating through the work gantry, and a loading means for loading a shear of the cutting face of the tunnel onto the transport conveyor. And Particularly, in the tunnel construction apparatus of the present invention,
The work gantry is formed in a gate shape having a space penetrating in the tunnel construction direction, the work gantry is provided with traveling means, and the work gantry is provided with a work cage movably in the tunnel construction direction. The rock drilling means is provided so as to be movable in the tunnel construction direction with respect to the work gantry, and the concrete spraying means includes a concrete spraying nozzle portion and a concrete spraying nozzle portion along the wall surface of the tunnel. Moving drive means for moving and moving, the concrete spraying means is provided movably in the tunnel construction direction with respect to the work gantry, a concrete pump is provided on the space side of the work gantry,
The concrete pump is connected to the concrete spraying means, the loading means includes a loading conveyor, and a scraping means for scraping a shear into the loading conveyor, and the loading means is mounted on the work gantry. On the other hand, it is provided so as to be movable in the tunnel construction direction and to be pivotable. According to the tunnel construction apparatus of the present invention, since the shearing-out step and the lining step are performed in parallel, one cycle of the tunnel construction can be speeded up. That is, according to the tunnel construction apparatus of the present invention, when the work gantry is installed facing the face of the tunnel,
Since drilling holes can be formed in the face by the rock drilling means, charging can be performed easily and quickly. next,
Since the shears of the cutting face crushed by the blasting can be loaded on the conveyor by the loading means, the transport of the shears can be performed easily and quickly. In addition, since the work gantry is provided with concrete spraying means, lining can be performed by spraying concrete on the wall surface of the tunnel face in parallel with carrying out the shear. In particular, according to the tunnel construction apparatus of the present invention, the work gantry can be easily and quickly moved to the face of the tunnel by the traveling means. Then, after the rock drilling means is moved toward the face to form a hole in the face, the work cage is moved toward the face, and charging is performed from the work cage, thereby facilitating the charging operation easily and quickly. You can do it. Next, when the face is crushed by blasting, the work gantry is provided so as to be freely movable, so that the work gantry can be easily and quickly retracted to the wellhead side. After the face was crushed, move the work gantry to the face again,
Shears crushed by the loading means can be loaded on the conveyor. At this time, the loading means is movable and pivotable in the tunnel construction direction, so that the loading of the shear can be performed easily and quickly. The conveyor can carry the shear to the wellhead side. Further, since the work gantry is formed in a portal shape having a space penetrating in the tunnel construction direction, a concrete conveying means such as a truck mixer can be provided in this space. Therefore, the concrete can be continuously supplied to the concrete spraying means via the concrete pump, so that the concrete can be quickly sprayed in parallel with the work of carrying out the shear. An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a tunnel construction device 100 is provided in the tunnel 1 under construction. The tunnel construction device 100 is provided on both sides of the tunnel 1 in the tunnel construction direction, that is, the arrow A in FIG. , B in the direction B. A work gantry 10 is provided on the rails 2 and 2, and the work gantry 10 includes a traveling device 11. The work gantry 10 can travel on the rails 2 and 2 by the traveling device 11. The work gantry 10 is formed in a portal shape having a space S1 shown in FIG. 2 that penetrates in the tunnel construction direction, that is, the work gantry 10 has a stage 12 and a lower part from the left and right ends of the stage 12 in FIG. Plural columns 13 provided in
FIG. 1 is provided at the lower ends of the plurality of columns 13 on the left side of FIG. 2 and the lower ends of the plurality of columns 13 on the right side of FIG. 2 along the tunnel construction direction, and the traveling device 11 is provided.
And a frame 14 shown in FIG. Also, frame 1
4 is provided with a plurality of outriggers 15. As shown in FIG. 2, a traveling rail 25 is laid in the center of the work gantry 10 on the stage 12 in the tunnel construction direction, and a concrete spraying machine 20 is mounted on the traveling rail 25. 25 are provided so as to be able to travel freely. As shown in FIG. 1, the concrete spraying machine 20 includes an arm 23 provided toward the face 1 b of the tunnel 1, and a wall 1 a of the tunnel 1
And a spray manipulator 22 provided on the arm 23 for driving the concrete spray nozzle 21 to move along the wall surface 1a of the tunnel 1. A concrete pump 26 is provided on the space S1 side of one of the frames 14 of the work gantry 10, and the concrete pump 26 supplies the concrete to the concrete spraying machine 20 via a concrete pumping pipe (not shown). Connected. In the space S1 of the work gantry 10, a truck mixer 27 for supplying concrete to the concrete pump 26 is stopped. As shown in FIG. 2, on both sides of the concrete spraying machine 20 on the stage 12 of the work gantry 10, running rails 35 are respectively laid in the tunnel construction direction. , A hydraulic rock drill 30 is provided so as to be able to travel along a traveling rail 35, and the hydraulic rock drill 30 directs its bit (blade) 31 shown in FIG. Is provided. As shown in FIG. 2, on the stage 12 of the work gantry 10, on both sides of the hydraulic rock drills 30, 30,
Each of the traveling rails 45 is laid in the tunnel construction direction.
Are provided to be able to travel along the traveling rail 45,
The work cage device 40 includes a work cage 41 shown in FIG.
An arm device 42 projects the work cage 41 toward the face 1b of the tunnel 1 and drives the work cage 41 to move up and down. As shown in FIG. 3, the space S of the work gantry 10
1 are respectively provided on both sides of the transport conveyor 50 in FIG.
As shown in (1), it is provided in the tunnel construction direction so as to be supported by the frame 14 and the column 13, and the transport conveyor 50 is installed so that the wellhead side is higher. A heavy dump truck 51 is waiting below the wellhead end of the conveyor 50. As shown in FIG. 2, a traveling rail 65 is laid in the tunnel construction direction on the lower surface of the stage 12 of the work gantry 10 on both sides of the space S1 and on the side of the face 1b in FIG. 65 is a shear loading device 60 for loading the shear 1c of the face 1b of the tunnel 1 on the transport conveyor 50.
Are suspended along the traveling rail 65 so as to be able to travel freely. The shear loading device 60 has a traveling device 61 suspended from a traveling rail 65. The traveling device 61 is provided with a turning device 63 for turning an arm 62 in a horizontal direction. The arm 62 has a loading conveyor 64
Is provided facing the face 1b, and the loading conveyor 6
4 is located directly above the end of the conveyor 50 on the side of the cutting face 1b. The arm 62 is provided with a scraping device 66 for scraping the shears 1c into the loading conveyor 64 in front of the end of the loading conveyor 64 on the side of the cutting face 1b. As shown in FIG. 7, the sliding guide plate 66a includes a shear guide plate 66a and a scraping arm 66b provided on the shear guide plate 66a and for scraping the shear 1c on the shear guide plate 66a toward the loading conveyor 64. Also, on the face 1b side of the tunnel 1, FIG.
As shown in FIG. 1, a loading auxiliary machine 70 for loading the shears 1c into the shear loading device 60 is provided. Since the tunnel construction apparatus 100 and the like have the above-described configuration, when constructing the tunnel 1, first, the work gantry 10 is moved toward the face 1b of the tunnel 1 (in the direction of arrow A in FIG. 1). It is positioned at a position having a predetermined distance from the cutting face 1b. At this time, the work gantry 10 is moved by the traveling device 11 in a tunnel construction direction (arrows A and B directions).
Since it is provided so that it can run freely, its movement and positioning can be moved easily and quickly. Further, by lowering the outrigger 15 to the bottom of the tunnel 1, the work gantry 10 can be fixed at that position. Next, the hydraulic rock drills 30, 30 provided on the stage 12 of the work gantry 10 are moved toward the face 1b (in the direction of arrow A), and a plurality of holes are drilled in the face 1b by the bits 31. To form Drilling can be easily and quickly formed by the hydraulic rock drills 30,30. When the drilling is formed, the hydraulic rock drills 30, 30 are returned to the wellhead side (the direction of arrow B). This is to ensure a wide working space between the work gantry 10 and the face 1b. Next, the work cages 41, 4 of the work cage devices 40, 40 provided next to the hydraulic rock drills 30, 30 are provided.
1 and the work cage devices 40, 40
Move to the b side (direction of arrow A). Then, the work cage 41 of each work cage device 40 can be made to approach the hole formed in the face 1b. Therefore, this work cage 4
1 to charge the drilling. Therefore, the charging operation can be performed easily and quickly. When charging is completed, the working cage devices 40, 40 are returned to the wellhead side (the direction of the arrow B). Next, when crushing a face by blasting,
The work gantry 10 is retracted toward the wellhead (in the direction of arrow B). At this time, since the work gantry 10 can freely move, the evacuation can be easily and quickly performed. After the face 1b is crushed, an operation for repairing the shape of the wall surface 1a of the tunnel 1 by dropping a floating stone or the like is performed. When the work is completed, the work cage devices 40, 40 are returned to the wellhead side (arrow B direction). In addition, in order to prevent collapse, tunnel 1
The wall 1a and the face 1b are supported and the wire mesh is attached. Next, the shear loading device 60 is driven to load the crushed waste 1c on the transport conveyor 50. The shear loading device 60 is movable in the tunnel construction direction (directions of arrows A and B) and is pivotable.
The shear 1c can be scooped by freely moving the shear guide plate 66a shown in FIG. 1, and the shear 1c scooped by the guide plate 66a is transferred to the loading conveyor 64 by a scraping arm 66b provided on the guide plate 66a. Can be placed.
As such, as shown in FIG.
Thus, the shears 1c can be loaded on the transport conveyor 50. Therefore, since the shears 1c can be loaded by the shear loading device 60, the loading of the shears 1c can be performed easily and quickly. Further, a loading auxiliary machine 70 moved through the space S1 penetrated by the work gantry 10 is provided between the work gantry 10 and the face 1b, and the loading assist machine 70 assists loading of the shears 1c. , Can be more easily and quickly loaded. The transport conveyor 50 can transport the loaded waste 1c toward the wellhead (in the direction of arrow B). A heavy dump truck 51 is waiting below the wellhead end of the conveyor 50, and the slip 1 c is loaded on the heavy dump truck 51. Therefore, the transport conveyor 50 and the heavy dump truck 51 cause the shear 1c.
Can be carried out. In addition, the concrete spraying machine 20 provided on the stage 12 of the work gantry 10 is moved toward the face 1b (in the direction of arrow A) in parallel with the work of unloading the shears 1c.
Concrete is sprayed from the concrete spray nozzle 21 onto the wall surface 1a of the tunnel 1 to perform lining. At this time, the concrete spray nozzle 21 is movable in the tunnel construction direction (directions of arrows A and B) and is movable along the wall surface 1a by the spray manipulator 22, so that the lining work can be performed easily and quickly. Can be done. Since the work gantry 10 is formed in a portal shape having a space S1 penetrating in the tunnel construction direction (directions of arrows A and B), it is necessary to provide a concrete conveying means such as a truck mixer 27 in this space S1. Can be done.
Therefore, the concrete can be continuously supplied to the concrete spraying machine 20 via the concrete pump 26 provided on the space S1 side of the frame 11. Therefore, in parallel with the work of carrying out the shears 1c, the lining by spraying the concrete can be quickly performed. Therefore, as in the conventional case, after waiting for the work of unloading the shears 1c,
One cycle of tunnel construction can be performed more quickly than when performing concrete spraying work. After the concrete spraying operation, the worker is again put on the work cages 41, 41 and the work cage devices 40, 40 are moved toward the face 1b (in the direction of arrow A). Then, since the lock bolt can be mounted on the lining from the work cage 41 of each work cage device 40, the work of mounting the lock bolt can be performed easily and quickly. The tunnel construction apparatus 100 can construct the tunnel 1 by repeating the above steps. Therefore, according to the tunnel construction of the above embodiment, one cycle can be speeded up by speeding up each process and paralleling the shearing-out process and the lining process, thereby further shortening the construction period. I can do it. In the above embodiment, the hydraulic rock drill 3
Although 0 is provided, it is needless to say that any rock drill can be used as long as a drill can be formed. According to the tunnel construction apparatus of the present invention, one cycle of tunnel construction can be speeded up, so that the construction period can be shortened. That is, according to the tunnel construction apparatus of the present invention, since the concrete blasting means is provided together with the loading means for loading the work gantry and the conveyor, the concrete is provided on the wall surface of the tunnel face in parallel with the carry-out of the shear. Can be applied by spraying. Therefore, one cycle of the tunnel construction can be speeded up, and the construction period can be shortened. In particular, according to the tunnel construction apparatus of the present invention, the work gantry can be easily and quickly moved to the face of the tunnel by the traveling means, and the rock drilling means is moved toward the face to drill holes in the face. Is formed, the work cage is moved toward the face, and the work is charged from the work cage, whereby the charging operation can be performed easily and quickly. Further, when the face is crushed by blasting, the work gantry is provided so as to be freely movable, so that the work gantry can be easily and quickly retracted to the wellhead side. Further, since the loading means is provided so as to be movable and pivotable in the tunnel construction direction, the loading of the shear can be performed easily and quickly. In addition, since concrete conveying means such as a truck mixer can be provided in a space penetrating the work gantry in the tunnel construction direction, the concrete can be continuously supplied to the concrete spraying means via the concrete pump. Therefore, the concrete can be quickly sprayed in parallel with the work of carrying out the shear. From the above, one cycle of the tunnel construction can be further speeded up, so that the construction period can be further shortened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing one embodiment of a tunnel construction device of the present invention. FIG. 2 is a view of the tunnel construction apparatus of FIG. 1 as viewed from a face side. FIG. 3 is a view of the tunnel construction apparatus of FIG. 1 as viewed from a wellhead side. DESCRIPTION OF SYMBOLS 1 ... Tunnel 1a ... Wall surface 1b ... Face 1c ... Shear 2 ... Rail (running means) 10 ... Work gantry 11 ... Running device (running means) 20 ... Concrete spraying machine (concrete spraying means) 21 ... Concrete spraying Nozzle (concrete spray nozzle part) 22 ... spray manipulator (moving drive means) 23 ... arm (moving drive means) 26 ... concrete pump 30 ... hydraulic rock drilling machine (rock drilling means) 41 ... working cage 50 ... transport conveyor 60 ... shear Loading device (loading means) 64 Loading conveyor 66 Raising device (raising means) 100 Tunnel construction device S1 Space

(72) Inventor Shuichi Iwaki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Yuzo Koga 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation In-company (72) Inventor Toshihiko Wada 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Yoshiyuki Ohara 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Tsunewa Kawabata 1058 Yoshii-cho, Yoshii-machi, Tano-gun, Gunma Prefecture Inside Furukawa Kikai Metal Co., Ltd. (72) Inventor Yasuo Ishikawa 1-27-3 Nishigahara, Kita-ku, Tokyo Inside Furukawa Drill Tech Co., Ltd. (56) References Japanese Patent Publication No. 6-33718 (JP, B2) Japanese Patent Publication No. 2-29160 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 9/00 E21D 9/10 E21D 9/12 E21B 7/02

Claims (1)

(57) [Claim 1] A work gantry, a rock drilling means for forming a hole in a face of a tunnel, and a concrete spraying on a wall surface of the tunnel. A concrete spraying means, a transport conveyor penetrating the work gantry, and a loading means for loading the shear of the face of the tunnel onto the transport conveyor .
In the tunnel construction device, the work gantry is formed in a portal shape having a space penetrating in a tunnel construction direction, the work gantry includes a traveling unit, and the work gantry has a work cage in the tunnel construction direction. The rock drilling means is movably provided in the tunnel construction direction with respect to the work gantry, The concrete spraying means includes a concrete spraying nozzle portion, and the concrete spraying nozzle portion is provided in the tunnel. A moving drive means for moving and driving along the wall of the concrete blasting means, the concrete spraying means is provided movably in the tunnel construction direction with respect to the work gantry, and a concrete pump is provided on the space side of the work gantry. The concrete pump is connected to the concrete spraying means, and the loading means comprises a loading conveyor Scraping means for scraping the shears into the loading conveyor, wherein the loading means is provided movably in the tunnel construction direction with respect to the work gantry, and is provided so as to be pivotable. Characteristic tunnel construction equipment.