JPH10153081A - Tunnel excavating device and tunnel excavating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the joined state of timbering plates, keep the self- sustaining property of a tunnel face, and dispense with reinforcing work by inclinatorily forming the timbering plate against the face, inclining the face, or inclining it in steps for an excavation. SOLUTION: A through groove excavating chain cutter 101 is advanced forward toward a tunnel face along the outer periphery of the face as it approaches the vertex, it is moved backward as it is lowered from the vertex, it is rotated in an arch shape, and a hardening material 141 is filled in an arch-shaped through groove 102 to form an arch-shaped timbering plate 103. The portion surrounded by the arch-shaped timbering plate 103 is inclinatorily excavated toward the face to slantly form a tunnel face plane 200. When the timbering plate 103 is inclinatorily formed against the face, the positioning accuracy of the end face of the timbering plate 103 is increased, and the joined state of the timbering plates 103 is improved. The face plane 200 is inclined against the face or inclined in steps for excavation, the self-sustaining property of the face plane 200 is maintained, the face plane 200 of a large cross section or the soft ground is prevented from being collapsed, and no reinforcing work is required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel excavation device and a tunnel excavation method used for excavating a tunnel.

[0002]

2. Description of the Related Art Conventionally, a tunnel excavation method used for excavating a tunnel is disclosed in Japanese Patent Publication No. Sho 61-2451.
No. 2, Japanese Patent Publication No. 4-63198, Japanese Patent Publication No. 6-5
No. 8034 proposes a tunnel excavation method in which an arch-shaped open groove is excavated, and the arch-shaped open groove is filled with instantly hardenable concrete to form an arch-shaped support plate. Japanese Patent No. 2519380 discloses a tunnel excavation method and apparatus for forming a cylindrical support plate.

[0003]

However, the above-mentioned Japanese Patent Publication No. 61-24512, Japanese Patent Publication No. 4-63198, Japanese Patent Publication No. 6-58034, and the like have a method of forming an arch-shaped support plate, and a patent. In the tunneling method and apparatus for forming a cylindrical support plate disclosed in Japanese Patent No. 2519380, the support plate is formed perpendicular to the axis of the tunnel. For this reason, when the face is excavated perpendicularly to the axis of the tunnel, there is a risk that the face may not be able to maintain its independence, particularly when it is a large section or a face of soft ground, and may collapse. Therefore, in order to maintain the independence of the face and to prevent the face from falling, reinforcement work such as penetration of a rock bolt into the face and spraying of concrete has been required. In addition, in order to form a support plate perpendicular to the axis of the tunnel and to maintain the independence of the face face, when excavating the face face inclining forward or inclining stepwise forward It is difficult to form the end face of the next support plate perpendicular to the axis of the tunnel. That is, if the end face of the next support plate is forcibly formed perpendicular to the axis of the tunnel, the work becomes difficult because the end face of the next support plate must be formed deep in the lower part from the face face. Then, the positioning accuracy of the end face of the next support plate is deteriorated. As a result,
There is a problem that the bonding state between the support plate and the next support plate is deteriorated. Therefore, the present invention improves the bonding state between the support plate and the next support plate by forming the support plate inclining toward the face, and further inclining the face face toward the face, or By excavating in a stepwise manner and maintaining the independence of the face, it is particularly possible to prevent the face of a large cross section or soft ground from collapsing, thereby making it unnecessary to reinforce the face. An object of the present invention is to provide a tunnel excavation device and a tunnel excavation method.

[0004]

According to the present invention, there is provided a traveling device configured to travel on a lower plate of a tunnel, an arch-shaped guide frame fixed to the traveling device and having a shape similar to the cross section of the tunnel. A moving frame that is moved along the arch-shaped guide frame, a chain cutter guide member that is fixed to the moving frame and extends diagonally upward toward the face, and is moved along the chain cutter guide member. Is provided in such a manner that it extends in the longitudinal direction of the tunnel and is driven by circulation, thereby moving together with the open-groove digging chain cutter for digging the open-groove groove along the outer periphery of the face and the open-groove digging chain cutter. Injecting a curable material into the openwork groove,
As the curable material injection pipe forming the arch-shaped support plate and the open-groove groove excavating chain cutter approach the vertex of the arch-shaped guide frame together with the moving frame, the open-groove groove excavating chain cutter is replaced with the chain cutter. Forward along the guide member toward the cutting face, and as the chain cutter for excavating the open groove is lowered from the apex of the arch-shaped guide frame together with the moving frame, the chain cutter for excavating the open groove is moved into the chain. A control device that moves rearward toward the face along the cutter guide member and controls the arch-shaped support plate to be formed so as to be inclined toward the face. It is a tunnel excavation device.

Further, the present invention provides the tunnel excavation device, wherein the traveling device is moved in accordance with the approach of the watermark groove excavation chain cutter together with the moving frame toward the vertex of the arched guide frame instead of the control device. ,
Advancing toward the face, as the open-groove excavation chain cutter descends from the apex of the arch-shaped guide frame together with the moving frame, the traveling device,
A control device is provided for moving the arched support plate backward toward the face and controlling the arch-shaped support plate to be inclined toward the face.

Further, the present invention relates to the tunnel excavation device, wherein the watermark groove excavation chain cutter is moved together with the moving frame toward the vertex of the arched guide frame instead of the control device. A chain cutter is advanced along the chain cutter guide member toward the face, and the traveling device is advanced toward the face, and the open-groove excavation chain cutter is moved together with the moving frame. As it descends from the apex of the arched guide frame, the open-groove excavating chain cutter is moved rearward toward the face along the chain cutter guide member, and the traveling device is moved toward the face. Moving backward, the arch-shaped support plate is formed inclined toward the face. A control unit for controlling so.

Further, the present invention relates to a traveling device configured to travel on a lower plate of a tunnel, and an arch-shaped guide frame fixed to the traveling device and having a shape similar to the cross section of the tunnel and inclined toward a face. A moving frame that is moved along the arch-shaped guide frame, a chain cutter guide member that is fixed to the moving frame and extends obliquely upward toward the face, and along the chain cutter guide member. A chain cutter for digging an open groove along the outer periphery of the face by extending the tunnel in the longitudinal direction of the tunnel and being driven to circulate; A curable material is provided to move with the chain cutter, and a curable material is injected into the open groove, and an arch-shaped support plate is formed so as to be inclined toward the face. A tunnel boring apparatus, comprising the a curable material injection tube.

Further, the present invention provides the tunnel excavating apparatus immediately before, wherein the open-groove excavation chain cutter is moved along with the moving frame toward the vertex of the arched guide frame. Advancing toward the face along the chain cutter guide member, the watermark groove excavation chain cutter descends from the apex of the arch-shaped guide frame together with the moving frame, and the watermark groove excavation chain cutter is moved. A control device that moves rearward toward the face along the guide member for the chain cutter and controls the arch-shaped support plate to be formed so as to be inclined toward the face.

Further, the present invention provides the tunnel excavation device immediately before, wherein the traveling device is moved toward the face as the chain cutter for excavating the open groove approaches the vertex of the arch-shaped guide frame together with the moving frame. As the chain cutter for excavating the openwork groove descends from the vertex of the arched guide frame together with the moving frame, the traveling device is moved rearward toward the face, and the arched support plate is moved. And a control device for controlling to be formed so as to be inclined toward the face.

Further, the present invention provides the tunnel excavating device immediately before, wherein the open-groove excavation chain cutter is moved along with the moving frame toward the vertex of the arch-shaped guide frame. Along with the chain cutter, the advancing device is moved toward the face along the guide member, and the traveling device is advanced toward the face, and the open-groove groove excavating chain cutter is moved along with the moving frame into the arched guide frame. As it descends from the apex, the watermark groove excavation chain cutter is moved rearward toward the face along the chain cutter guide member, and the traveling device is moved rearward toward the face, A control for controlling the arch-shaped support plate so as to be inclined toward the face. Comprising a device.

Further, the present invention has a first gripper which can extend so as to press an inner peripheral wall of the tunnel, and has a first cylindrical portion disposed concentrically with the tunnel in the tunnel; A second gripper that is extendable to press an inner peripheral wall, the gripper is formed to have substantially the same diameter as the first cylindrical portion, and is disposed concentrically with the first cylindrical portion in the tunnel. A second cylindrical portion, which is provided between the first cylindrical portion and the second cylindrical portion, and expands and contracts, thereby bringing the first cylindrical portion and the second cylindrical portion close to or closer to each other. A telescopic device to be separated, a rotary frame provided at the end of the second cylindrical portion concentrically with the second cylindrical portion and rotatably with respect to the second cylindrical portion; , And diagonally from the side of the second cylindrical portion toward the face. A chain cutter guide member that extends so as to extend, and is provided so as to be moved along the chain cutter guide member, extends in the longitudinal direction of the tunnel, and is driven to circulate, so that the outer periphery of the face is extended. A chain cutter for excavating a trench along the same, and provided so as to move together with the chain cutter for excavating the trench, a curable material is injected into the trench, and a cylindrical support plate or a spiral support is provided. As the curable material injection tube forming the plate and the open-groove-drilling chain cutter approach the vertex of the second cylindrical portion together with the rotating frame, the open-groove-drilled chain cutter is
The watermark groove excavation chain cutter is advanced along the chain cutter guide member toward the face, and the watermark groove excavation chain cutter descends from the vertex of the second cylindrical portion together with the rotating frame. Is moved rearward toward the face along the chain cutter guide member, and the cylindrical support plate or the spiral support plate is controlled so as to be inclined toward the face. And a tunnel excavation device.

[0012] Further, the present invention provides the tunnel excavating device immediately before, wherein instead of the control device, the open-cut groove excavating chain cutter approaches the vertex of the second cylindrical portion together with the rotating frame. A second cylindrical portion is advanced toward the face, and the open-groove excavating chain cutter is moved together with the rotating frame into the second cylindrical portion.
As the cylindrical portion descends from the apex, the second cylindrical portion is moved rearward toward the face, and the cylindrical support plate or the spiral support plate is formed to be inclined toward the face. And a control device for controlling the operation.

[0013] Further, the present invention provides the tunnel excavating device immediately before, wherein the openwork groove excavating chain cutter approaches the vertex of the second cylindrical portion together with the rotating frame in place of the control device. The open-groove digging chain cutter is advanced toward the face along the chain cutter guide member, and the second cylindrical portion is advanced toward the face, and the open-groove digging chain cutter is Moving the open-groove-grooving chain cutter rearward toward the cutting face along the chain cutter guide member along with the rotating frame as it descends from the vertex of the second cylindrical portion; Is moved rearward toward the face, and the cylindrical support plate or the spiral support plate is It headed a control controlling device so as to be formed to be inclined.

Further, according to the present invention, in the tunnel excavation method using any one of the above tunnel excavation devices for forming an arch-shaped support plate, the first arch-shaped open groove is cut so as to be inclined toward the face. Filling and curing the first arched open groove with a curable material to form a first arched support plate that slopes toward the face and is surrounded by the first arched support plate. The first arched support plate is excavated so as to be inclined toward the face, and then the next arch-shaped open groove whose rear end is close to or continuous with the front end of the first arched support plate is formed on the face. Filling the curable material into the next arch-shaped open groove while curing so as to incline toward it, and curing the same to form the next arch-shaped support plate so as to incline toward the face. And the following The portion surrounded by the porch-shaped support plate is excavated so as to be inclined toward the face, and thereafter, the same steps are repeated, and the earth and sand excavated in the step are required rearward toward the face. This is a tunnel excavation method characterized by discharging at times. here,
In the above excavation, the excavation face may be excavated while being inclined stepwise toward the face.

Further, according to the present invention, in a tunnel excavation method using any one of the tunnel excavating devices for forming a cylindrical support plate or a spiral support plate, the first cylindrical watermark groove is inclined toward the face. While drilling
Filling the first cylindrical open groove with curable material,
Curing to form a first cylindrical support plate that slopes toward the face, excavating the portion surrounded by the first cylindrical support plate to slope toward the face,
Next, the rear end portion is close to the front end portion of the first cylindrical support plate, or, while excavating the next continuous cylindrical open groove so as to incline toward the face, the next cylindrical shape Filling the curable material into the openwork groove and curing,
Forming the next cylindrical support plate inclined toward the face, excavating the portion surrounded by the next cylindrical support plate so as to be inclined toward the face, and thereafter repeating the same steps And excavated earth and sand excavated by the above process,
The tunnel excavation method is characterized in that the material is discharged rearward toward the face when required. Here, the excavation is
There is also a case where the face is excavated in a stepwise manner toward the face.

Further, according to the present invention, in a tunnel excavation method using any one of the above tunnel excavation devices for forming a cylindrical support plate or a spiral support plate, a spiral open groove is excavated so as to be inclined toward the face. While filling the curable material in the spiral open groove, and cured,
A spiral support plate inclined toward the face is formed, and a portion surrounded by the spiral support plate is excavated so as to be inclined toward the face, as required, and the earth and sand excavated in the process is removed. And discharging to the rear face toward the face when required. Here, in the excavation, the excavation may be performed with the face face inclined in a stepwise manner toward the face.

According to the tunnel excavating device of the present invention, a curable material is provided so as to move together with the watermark groove excavating chain cutter, and a curable material is injected into the watermark groove to form an arch-shaped support plate. As the pipe and the open groove digging chain cutter approach the vertex of the arched guide frame together with the moving frame, the open groove digging chain cutter is moved toward the face along the chain cutter guide member. As the chain cutter for excavating the trench is lowered from the apex of the arched guide frame together with the moving frame, the chain cutter for excavating the trench is moved toward the face along the guide member for the chain cutter. So that the arched support plate is formed to be inclined toward the face. As the control device for controlling, or instead of this control device, the chain cutter for excavating the openwork groove approaches the vertex of the arched guide frame together with the moving frame, the traveling device is advanced toward the face. , The openwork groove drilling chain cutter,
As the traveling frame moves down from the apex of the arch-shaped guide frame, the traveling device is moved backward toward the face, and the arch-shaped support plate is formed to be inclined toward the face. The control device, or instead of this control device, as the open-groove digging chain cutter approaches the vertex of the arched guide frame together with the moving frame, the open-groove digging chain cutter is moved to the chain. The traveling device is advanced toward the face along the cutter guide member and the traveling device is advanced toward the face, and the openwork groove excavation chain cutter is moved along with the moving frame to the vertex of the arch-shaped guide frame. As it goes down, the chain cutter for excavating the open channel is moved along the guide member for the chain cutter. And moving the traveling device rearward toward the face, and controlling the arch-shaped support plate to be formed so as to be inclined toward the face. With device. For this reason, by forming the support plate inclining toward the face, the bonding state between the support plate and the next support plate is improved. Furthermore, by excavating the face face inclining toward the face face or excavating in a stepwise manner to maintain the independence of the face face, especially, the face face of a large section or soft ground collapses This eliminates the need to reinforce the face.

Further, according to another tunnel excavating device of the present invention, an arch-shaped guide frame fixed to the traveling device and having a shape similar to the tunnel cross-section and inclined toward the face is provided. A moving frame to be moved;
A chain cutter guide member fixed to the moving frame and extending diagonally upward toward the face, provided to be moved along the chain cutter guide member, and extended in the longitudinal direction of the tunnel. A circular groove excavation chain cutter for excavating an open groove along the outer periphery of the face by being circulated, and a curable material provided to move together with the open groove groove chain cutter. And a curable material injection tube for forming an arched support plate so as to be inclined toward the face. Further, the present invention provides the tunnel excavating device immediately before, wherein the open-groove excavating chain cutter approaches the vertex of the arch-shaped guide frame together with the moving frame, the open-groove excavating chain cutter is connected to the chain cutter. Forward along the guide member toward the cutting face, and as the chain cutter for excavating the open groove is lowered from the apex of the arch-shaped guide frame together with the moving frame, the chain cutter for excavating the open groove is moved into the chain. There is provided a control device for moving backward along the cutter guide member toward the face and controlling the arch-shaped support plate to be formed inclined toward the face. Further, the present invention provides the tunnel excavation device immediately before, as the chain cutter for excavating the openwork groove approaches the vertex of the arch-shaped guide frame together with the moving frame, advances the traveling device toward the face. As the chain cutter for excavating the openwork groove descends from the top of the arch-shaped guide frame together with the moving frame, the traveling device is moved rearward toward the face, and the arch-shaped support plate is moved by the face. And a control device for controlling to be formed so as to be inclined toward. Further, the present invention provides the tunnel excavating device immediately before, wherein the open-groove excavating chain cutter approaches the vertex of the arch-shaped guide frame together with the moving frame, the open-groove excavating chain cutter is connected to the chain cutter. Advancing toward the face along the guide member, and moving the traveling device toward the face, and the open-groove excavation chain cutter is moved from the top of the arch-shaped guide frame together with the moving frame. As it descends, the watermark groove excavating chain cutter is moved rearward toward the face along the chain cutter guide member, and the traveling device is moved rearward toward the face, and the arch-shaped A supporting device for controlling the support plate to be formed so as to be inclined toward the face; .
For this reason, by forming the support plate inclining toward the face, the bonding state between the support plate and the next support plate is improved. Furthermore, by excavating the face face inclining toward the face face or excavating in a stepwise manner to maintain the independence of the face face, especially, the face face of a large section or soft ground collapses This eliminates the need to reinforce the face.

Further, according to another tunnel excavation device of the present invention, as the chain cutter for excavating the open groove approaches the vertex of the second cylindrical portion together with the rotating frame, the chain cutter for excavating the open groove is formed. Moving forward along the guide member for the chain cutter toward the face, and as the chain cutter for digging the open groove descends from the apex of the second cylindrical portion together with the rotating frame, the chain for digging the open groove will be described. The cutter is moved rearward toward the face along the chain cutter guide member, and the cylindrical support plate or the spiral support plate is controlled so as to be inclined toward the face. It has a control device. Further, in the tunnel excavation device immediately before, instead of the control device, as the chain cutter for excavating the trench becomes closer to the vertex of the second cylindrical portion together with the rotating frame, the second cylindrical portion, The second cylindrical portion is moved rearward toward the face as the chain cutter for excavating the open groove is lowered together with the rotating frame from the vertex of the second cylindrical portion. And a control device for controlling the cylindrical support plate or the spiral support plate so as to be inclined toward the face. Further, in the tunnel excavation device just before, instead of the control device, the open-groove excavation chain cutter is moved along with the rotating frame toward the vertex of the second cylindrical portion, and the open-groove excavation chain cutter is removed. Advancing the face along the chain cutter guide member toward the face, and advancing the second cylindrical portion toward the face, the open-groove groove excavating chain cutter, together with the rotating frame, As the cylindrical cutter descends from the apex of the second cylindrical portion, the open-groove excavation chain cutter is moved rearward toward the face along the chain cutter guide member, and the second cylindrical portion is And the cylindrical support plate or the spiral support plate is formed inclined toward the face. A control unit for controlling such that. For this reason, by forming the support plate inclining toward the face, the bonding state between the support plate and the next support plate is improved. Furthermore, by excavating the face face inclining toward the face face or excavating in a stepwise manner to maintain the independence of the face face, especially, the face face of a large section or soft ground collapses This eliminates the need to reinforce the face.

Further, according to the tunnel excavation method of the present invention, a curable material is filled in the first arch-shaped open groove while excavating the first arch-shaped open groove so as to be inclined toward the face. Hardening to form a first arched support plate inclined toward the face, excavating a portion surrounded by the first arched support plate to be inclined toward the face, At the rear end portion is close to the front end portion of the first arch-shaped support plate, or, while excavating the next arch-shaped open groove continuously inclined toward the face, the next arch-shaped watermark is cut. The groove is filled with the curable material and cured to form a next arched support plate inclining toward the face, and a portion surrounded by the next arched support plate, Incline toward the face Excavated repeatedly performs the same steps below. Here, in the excavation, the excavation may be performed with the face face inclined in a stepwise manner toward the face. For this reason, by forming the support plate inclining toward the face, the bonding state between the support plate and the next support plate is improved. further,
By excavating the face face inclining toward the face or in a stepwise manner to maintain the independence of the face face, especially preventing the face face of large sections or soft ground from collapsing However, this eliminates the need for face reinforcement work.

Further, according to another tunnel excavation method of the present invention, a curable material is filled in the first cylindrical open groove while excavating the first cylindrical open groove so as to be inclined toward the face. Fill and cure to form a first cylindrical support plate that slopes towards the face, and excavate the area surrounded by the first cylindrical support plate so as to slope toward the face. Then, the rear end portion is close to the front end portion of the first cylindrical support plate, or the next continuous cylindrical openwork groove is excavated so as to be inclined toward the face, and the next cylindrical shape is cut out. The curable material is filled into the openwork groove and cured to form the next cylindrical support plate inclined toward the face, and the portion surrounded by the next cylindrical support plate is Excavation to incline toward the face Carried out by repeating the degree. Here, in the excavation, the excavation may be performed with the face face inclined in a stepwise manner toward the face. For this reason, by forming the support plate inclining toward the face, the bonding state between the support plate and the next support plate is improved. Furthermore, by excavating the face face inclining toward the face face or excavating in a stepwise manner to maintain the independence of the face face, especially, the face face of a large section or soft ground collapses This eliminates the need to reinforce the face.

According to still another tunnel excavation method of the present invention, a curable material is filled in the spiral open groove while excavating the spiral open groove so as to be inclined toward the face. Curing is performed to form a spiral support plate inclined toward the face, and a portion surrounded by the spiral support plate is excavated so as to be inclined toward the face when necessary. Here, in the excavation, the excavation may be performed with the face face inclined in a stepwise manner toward the face. For this reason, by forming the support plate inclining toward the face, the bonding state between the support plate and the next support plate is improved. Furthermore, by excavating the face face inclining toward the face face or excavating in a stepwise manner to maintain the independence of the face face, especially, the face face of a large section or soft ground collapses This eliminates the need to reinforce the face.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an embodiment of a tunnel excavation device of the present invention, FIG.
FIG. 3 is a front view. The traveling device 105 is a device configured to travel on the lower plate 104 in the tunnel.
It has a plurality of wheels 118, a driving device 119 for traveling, and a rail clamp (not shown). Arched guide frame 1
Reference numeral 06 is similar to the cross section of the tunnel, and both lower ends of the arched guide frame 106 are fixed to the traveling device 105. Wheels 118 of the traveling device 105 are movably mounted on rails 120 laid and fixed on the lower plate 104 in the tunnel. As shown in the partial sectional view of FIG. 4, a rack 121 extending in the longitudinal direction of the arch-shaped guide frame 106 is fixed inside the arch-shaped guide frame 106.

The moving frame 108 is a frame that moves along the arched guide frame 106. A plurality of flanged guide rollers 1 fitted in arched guide grooves 122 provided in the front and rear portions of the arched guide frame 106 at the front and rear portions of the moving frame 108.
23 is attached, and a moving drive device 107 including a reduction gear and a motor with a brake is fixed to the moving frame 108. The pinion 124 fixed to the output shaft of the movement driving device 107 is meshed with the rack 121, and when the movement driving device 107 is operated, the movement frame 108 is moved along the arched guide frame 106. Here, the prime mover includes an electric motor, a hydraulic motor, and the like.

The guide member 109 for the chain cutter extends in the longitudinal direction of the tunnel and moves toward the face of the tunnel.
It extends diagonally upward and curves so that the middle part is depressed outside the tunnel. A front portion of the chain cutter guide member 109 is fixed to an upper portion of the moving frame 108. FIG.
As shown in the partial cross-sectional view, arcuate guide grooves 125 are provided on both sides of the chain cutter guide member 109 in the width direction. Also, the guide member 109 for the chain cutter is used.
The arc-shaped rack 126 is fixed to the lower part of the. Frame 11 that moves along guide member 109 for chain cutter
A guide roller 127 with a flange fitted into the arc-shaped guide groove 125 is attached to both sides of the front part and the rear part. A cutter advance / retreat drive device 110 including a speed reducer and a prime mover with a brake is fixed to the frame 111. The pinion 128 fixed to the output shaft of the cutter advance / retreat driving device 110 is meshed with the arc-shaped rack 126.

The chain cutter 101 for excavating the seepage groove is provided so as to be moved along the guide member 109 for the chain cutter, extends in the longitudinal direction of the tunnel, and is driven to circulate, so as to extend along the outer periphery of the face. Excavate the open channel. The see-through groove excavating chain cutter 101 has the same curvature as the chain cutter guide member 109 and is curved such that the middle portion is depressed outside the tunnel. Here, the guide member 109 for the chain cutter and the chain cutter 101 for excavating the openwork groove may extend linearly in the longitudinal direction of the tunnel. The rear part of the seepage groove excavation chain cutter 101 is fixed to the upper part of the frame 111. When the cutter advance / retreat driving device 110 is operated in the forward rotation or the reverse rotation operation, the penetration groove excavation chain cutter 101 is circularly moved in the longitudinal direction of the tunnel. It is moved back and forth in an arc. As shown in the partial configuration diagrams of FIGS. 5 and 7 and the partial cross-sectional view of FIG. 8, the chain cutter 101 for drilling the see-through groove includes an arc-shaped cutter frame 113 fixed to a frame 111, and a cutter frame 113. 1
13 attached to the front and rear ends of the sprocket 129
And guide grooves 1 on both sides of the cutter frame 113 in the width direction.
14, a cutter chain 115 that circulates along the sprocket 129, and a cutter chain circulation drive device 130 that is fixed to the rear of the cutter frame 113 and that includes a reduction gear and a motor with a brake. The output shaft of the cutter chain circulation drive device 130 is connected to a rear sprocket, and when the cutter chain circulation drive device 130 is operated, the cutter chain 11 is driven.
5 is circulated in the direction of arrow A. Cutter chain 11
5 is a large number of links 132 to which a cutting edge 131 is attached.
And a horizontal pin 11 at one end and the other end of each link 132.
7 and connecting pins 133 and 134 and a vertical pin 116 for connecting the connecting links 133 and 134 to each other.
And The horizontal pin 117 extends in a direction perpendicular to the plane of the cutter frame 113, and the vertical pin 116 extends in a direction parallel to the plane of the cutter frame 113.

The curable material injection pipe 112 is provided so as to move together with the open-groove excavating chain cutter 101, and injects a curable material into the open groove to form an arch-shaped support plate. As shown in the partial cross-sectional view of FIG. 6, the arc-shaped curable material injection tube 112 to which the rack 135 is fixed is slidably fitted to a support member 136 fixed to the side of the frame 111. An injection pipe moving drive device 137 including a reduction gear and a motor with a brake is fixed to the support member 136. Injection tube moving drive 1
The pinion 138 fixed to the output shaft 37 is a rack 13
5 meshed. The curable material injection pipe 112 is set to have the same curvature as that of the chain cutter 101 for drilling a see-through groove, and when the injection pipe moving driving device 137 is operated in the forward rotation or the reverse rotation, the curable material injection pipe 112 moves forward and backward in an arc shape. Be moved. Further, the rear end of the curable material injection tube 112 is connected via a hose 139 to a pump for feeding a cured positive material (not shown).

A control device composed of a microcomputer or the like (not shown) includes a chain cutter 101 for drilling an openwork groove.
But together with the moving frame 108, the arched guide frame 106
Approaching the apex, the open-groove digging chain cutter 101 is advanced toward the face along the chain cutter guide member 109, and the open-groove digging chain cutter 101 is moved together with the moving frame 108 into the arched guide frame 106. As it descends from the top, the chain cutter 101 for excavating the open groove is moved to the guide member 10 for the chain cutter.
It moves backward along the face 9 along the face, and controls the arch-shaped support plate so as to be formed inclined toward the face.

Here, in the tunnel excavation device,
Instead of the control device, the traveling device 105 is advanced toward the face as the open-groove excavating chain cutter 101 approaches the vertex of the arched guide frame 106 together with the moving frame 108, and the open-groove excavating chain cutter 101 is removed. Is controlled to move the traveling device 105 backward toward the face as it descends from the vertex of the arch-shaped guide frame 106 together with the moving frame 108, so that the arch-shaped support plate is formed to be inclined toward the face. In some cases, a control device is provided.

Here, in the above tunnel excavating device, instead of the control device, the open-groove excavating chain cutter 101 is moved closer to the top of the arch-shaped guide frame 106 together with the moving frame 108. The cutter 101 is advanced toward the face along the chain cutter guide member 109, and the traveling device 105 is advanced toward the face. As it descends from the top of 106, the open-groove excavation chain cutter 101 is moved rearward toward the face along the chain cutter guide member 109, and the traveling device 105 is moved rearward toward the face, and Shape support plate is formed to be inclined toward the face Sometimes a control device for controlling.

Next, a method of excavating a tunnel by using the tunnel excavator will be described. First, an open-groove excavating chain cutter 101 extending in the longitudinal direction of the tunnel.
Is rotated in an arch shape along the outer periphery of the face, and as the open-groove digging chain cutter 101 approaches the vertex, the open-groove digging chain cutter 101 is advanced toward the face, and the open-groove digging chain is moved. As the cutter 101 descends from the apex, the chain cutter 1
01, moving backward toward the face, rotating in an arch shape, and excavating the first arch-shaped open groove 102 so as to be inclined toward the face, into the first arch-shaped open groove 102. The curable material 141 is filled and cured to form the first arched support plate 103 that slopes toward the face as shown in FIG. Next, the portion surrounded by the first arched support plate 103 is excavated so as to be inclined toward the face, and the face face 200 is formed obliquely. Here, there is a case where the face is excavated while being inclined stepwise toward the face.

Next, the chain cutter 10 for excavating the openwork groove is used.
1 is advanced, after rotating in an arch shape along the outer periphery of the face, and the open-groove digging chain cutter 101 approaches the vertex, as shown in FIG.
As the open-groove digging chain cutter 101 descends from the apex, the open-groove digging chain cutter 101 is moved rearward toward the cutting face, and is turned in an arch shape. While excavating the next arch-shaped open groove 102 whose rear end is close to or continuous with the front end of the shape-supporting plate 103 so as to be inclined toward the face, it is hardened into the next arch-shaped open groove 102. Material 1
41 is filled and hardened to form the next arched support plate 103 which is inclined toward the face. Next, the portion surrounded by the next arched support plate 103 is excavated so as to be inclined toward the face, and the face face 200 is formed obliquely.
Here, there is a case where the face is excavated while being inclined stepwise toward the face. Hereinafter, the same steps are repeatedly performed, and the earth and sand excavated in the steps are discharged rearward toward the face as required. In the above tunnel excavation method,
Although the open-groove excavation chain cutter 101 was advanced or retreated toward the face, the traveling device 105 was advanced or retreated toward the face, and as a result,
In some cases, the open-groove excavating chain cutter 101 is moved forward or backward toward the face, or the traveling device 105 is moved forward or backward together with the open-groove excavating chain cutter 101 in some cases. Here, each of the watermark grooves 102 is curved so that the intermediate portion is depressed outside the tunnel, but may extend linearly in the longitudinal direction of the tunnel.

Next, FIGS. 9 and 10 show another embodiment of the tunnel excavation device of the present invention. Although most of the configuration is the same as that of the embodiment of FIG. 1, the control device is not provided, and the arch-shaped guide frame 106 has a similar shape to the cross section of the tunnel, except that the apex is inclined toward the face. Since the vertex of the arched guide frame 106 is inclined toward the face, the arched support plate 103 is formed so as to be inclined toward the face as shown in FIG. The arch-shaped guide frame 106 is provided with a pair of racks 121a and 121b in parallel along the longitudinal direction of the arch-shaped guide frame 106. A pair of pinions 124a, 124b fixed to an output shaft extending in a substantially horizontal direction of a moving driving device 107 fixed to a moving frame 108, which is composed of a reduction gear and a prime mover with a brake, is connected to a pair of racks 121a, 121a.
1b. Here, the prime mover includes an electric motor, a hydraulic motor, and the like. Here, when the movement driving device 107 is operated, the movement frame 108 is moved to the arched guide frame 10.
6 along. When the moving frame 108 is moved along the arch-shaped guide frame 106, a pair of anti-shake rollers 201 is provided to prevent the moving frame 108 from moving back and forth with respect to the arch-shaped guide frame 106. Is preferred.

In another embodiment of the tunnel excavating device of the present invention shown in FIGS. 9 and 10, the chain cutter 101 for excavating the openwork groove approaches the vertex of the arched guide frame 106 together with the moving frame 108. The open-groove digging chain cutter 101 is advanced toward the face along the chain cutter guide member 109, and the open-groove digging chain cutter 101 is moved by the moving frame 10.
As it descends from the vertex of the arch-shaped guide frame 106 together with 8, the open-groove excavation chain cutter 101 is moved rearward toward the face along the chain cutter guide member 109, and the arch-shaped support plate 103 is moved toward the face. There is also a case where a control device for controlling to be formed so as to be inclined is provided. Further, in another embodiment of the tunnel excavation device of the present invention shown in FIGS. 9 and 10, the open-groove excavation chain cutter 101 is provided with the moving frame 1.
08 and approaching the vertex of the arched guide frame 106, the traveling device 105 is advanced toward the face, and the chain cutter 101 for digging the openwork groove is moved by the moving frame 10
A control device for moving the traveling device 105 rearward toward the face as it descends from the vertex of the arch-shaped guide frame 106 together with 8 so that the arch-shaped support plate 106 is formed to be inclined toward the face. It may be provided with.

Further, in another embodiment of the tunnel digging device of the present invention shown in FIGS. 9 and 10,
As the open-groove excavation chain cutter 101 approaches the vertex of the arch-shaped guide frame 106 together with the moving frame 108, the open-groove excavation chain cutter 101 is advanced toward the face along the chain cutter guide member 109, The traveling device 105 is advanced toward the face, and the open-groove excavation chain cutter 101 is moved downward from the vertex of the arch-shaped guide frame 106 together with the moving frame 108.
Along the chain cutter guide member 109 toward the face, and the traveling device 105
It is moved backward toward the face, and the arch-shaped support plate 103
However, there may be a case where a control device is provided which controls so as to be inclined toward the face. In a tunnel excavation method using another embodiment of the tunnel excavation device of the present invention shown in FIGS. 9 and 10, the chain cutter 101 for excavating a trench is moved forward or backward toward a face, but traveling. When the device 105 is advanced or retracted toward the face, and consequently the open-groove digging chain cutter 101 is advanced or retracted toward the face, or when the open-groove digging chain cutter 1 is used.
01 and the traveling device 105 may be moved forward or backward toward the face.

Next, FIG. 11 shows still another embodiment of the tunnel excavation device of the present invention. FIG.
Explanatory drawing of a state where the excavated earth and sand are simultaneously discharged while excavating the openwork groove above the tunnel. FIG. 12 shows that the openwork groove is excavated below the tunnel but the excavated earth and sand is not discharged. FIG. 13 is an explanatory diagram of the state.
It is the front view seen from the left side of FIG. 1st cylindrical part 1
Has a first gripper 4 that can be extended so as to press the inner peripheral wall 3 of the tunnel 2, and is disposed concentrically with the tunnel 2 in the tunnel 2. The second cylindrical portion 5 has a second gripper 6 that can be extended to press the inner peripheral wall 3.
The second cylindrical portion 5 is further formed to have substantially the same diameter as the first cylindrical portion 1, and is disposed concentrically with the first cylindrical portion 1 in the tunnel 2. The cylinder 7, which is an expansion / contraction device, is provided between the first cylindrical portion 1 and the second cylindrical portion 5, and expands / contracts to bring the first cylindrical portion 1 and the second cylindrical portion 5 closer to or closer to each other. It is a device for separating.

Here, for example, in a state where the first gripper 4 is extended and presses the inner peripheral wall 3, the first cylindrical portion 1 is fixed to the tunnel 2. In a state where the second gripper 6 of the second cylindrical portion 5 is contracted and does not press the inner peripheral wall 3, the second cylindrical portion 5 is not fixed to the tunnel 2. Here, when the cylinder 7, which is an expansion device, is extended, only the second cylindrical portion 5 is moved forward toward the tunnel face because the first cylindrical portion 1 is fixed. Here, the second cylindrical portion 5
When the first gripper 4 of the first cylindrical part 1 is contracted while the second cylindrical part 5 is fixed by extending the gripper 6, the first cylindrical part 1 is not fixed. Here, when the cylinder 7 serving as the expansion and contraction device is contracted, the second cylindrical portion 5 is fixed, so that only the first cylindrical portion 1 is moved so as to approach the second cylindrical portion 5. By the above operation, the tunnel excavation device of the present invention is moved forward toward the tunnel face, and is moved backward toward the tunnel face by the reverse operation.

The rotary frame 8 is formed in an annular shape having substantially the same diameter as the second cylindrical portion 5, and is provided at the tip of the second cylindrical portion 5 concentrically with the second cylindrical portion 5, and Cylindrical part 5
It is provided rotatable with respect to. The rotating frame 8
The wheels 8b and 8c of the connecting portion 8a are provided so as to run in a groove 5a provided along the inner circumference of the distal end of the second cylindrical portion 5, so that the second cylindrical portion 5 It is provided rotatably. The rotation axis of the wheel 8b is provided parallel to the longitudinal direction of the tunnel 2, and the rotation axis of the wheel 8c is provided perpendicular to the longitudinal direction of the tunnel 2.
The direction of the rotation axis of 8c is provided as appropriate. The pinion 5c is rotated by the built-in speed reducer motor 5b provided at the inner connection portion 5d of the second cylindrical portion 5. Pinion 5
c, a rack portion 8d provided inside the connection portion 8a of the rotating frame 8 meshes with the rotating frame 8, and the rotation of the rotating frame 8 via the rack portion 8d by the rotation of the pinion 5c by the motor 5b with a built-in speed reducer. Is rotated with respect to the cylindrical portion 5.

As described above, when the rotating frame 8 is formed in an annular shape having substantially the same diameter as the second cylindrical portion 5 and is rotatably provided at the tip of the second cylindrical portion 5, the rotating frame 8
However, there is an advantage that the space can be effectively used in the space left between the open-cut trench cutter 11 and the inner peripheral wall 3 of the tunnel 2. Here, the rotating frame 8
Is preferably formed in an annular shape, but is provided concentrically with the second cylindrical portion 5 and rotatably with respect to the second cylindrical portion 5, and a bucket or other excavating means is provided in a tunnel. The structure is not limited as long as it is a structure such as an annular shape that can be freely taken in and out of the device.

The chain cutter guide member 9 is fixed to the rotating frame 8 and extends obliquely from the side of the second cylindrical portion 5 toward the face. The open-groove excavation chain cutter 11 is provided with a chain cutter guide member 9.
Along the outer circumference of the face by extending along the longitudinal direction of the tunnel 2 and being circulated by a chain cutter circulating drive device 17. It is a device to excavate. In this embodiment, the guide member 9 for a chain cutter extends in the longitudinal direction of the tunnel, and is curved so that the intermediate portion is depressed outside the tunnel. Accordingly, the watermark groove excavation chain cutter 11 has the same curvature as the chain cutter guide member 9 and the middle portion is curved so as to be depressed outside the tunnel. The guide member 9 for the chain cutter and the chain cutter 11 for excavating the openwork groove are
In some cases, it is configured to extend linearly in the longitudinal direction of the tunnel. As shown in FIG. 14, the curable material injection pipe 13 is provided so as to move together with the watermark groove digging chain cutter 11, and the curable material injection pipe 13 is attached to the watermark groove 12 digged by the watermark groove digging chain cutter 11. A curable material 42 such as concrete is injected to form a cylindrical support plate 12a as shown in FIG. 16 or a spiral support plate 12c as shown in FIG.

A control device including a microcomputer (not shown) and the like is provided with a
As the tool approaches the vertex of the second cylindrical portion 5 together with the rotating frame 8, the chain cutter 11 for drilling the open groove is advanced along the guide member 9 for the chain cutter toward the face, and the chain cutter for drilling the open groove is moved. As 11 moves down from the vertex of the second cylindrical portion 5 together with the rotating frame 8, the open-groove excavating chain cutter 11 is moved rearward toward the face along the chain cutter guide member 9, as shown in FIG. As shown in FIG. 17, the cylindrical support plate 12a, or the spiral support plate 12c as shown in FIG.
It is controlled so that it is formed inclined toward the face. Instead of this control device, the second cylindrical portion 5 is advanced toward the face as the watermark groove drilling chain cutter 11 approaches the vertex of the second cylindrical portion 5 together with the rotating frame 8, and the open groove drilling is performed. As the chain cutter 11 for use descends from the vertex of the second cylindrical portion 5 together with the rotating frame 8,
A control device for moving the second cylindrical portion 5 backward toward the face and controlling the cylindrical support plate 12a or the spiral support plate 12c so as to be inclined toward the face may be provided. is there. In addition, instead of this control device,
When the chain cutter 11 for drilling the openwork groove is
Together with the vertex of the second cylindrical portion 5, the open-groove excavating chain cutter 11 is advanced toward the face along the chain cutter guide member 9, and
Is advanced toward the face, and as the open-groove digging chain cutter 11 descends from the vertex of the second cylindrical portion 5 together with the rotating frame 8, the open-groove digging chain cutter 11 is moved toward the chain cutter. The second cylindrical portion 5 is moved rearward toward the face along with the guide member 9 toward the face, and the cylindrical support plate 12a or the spiral support plate 12c is moved toward the face. There may be a case where a control device is provided to perform control so as to be formed in an inclined manner.

The bucket 14 driven by a driving device (not shown) is a device for scooping up the earth and sand excavated by the chain cutter 11 for excavating the openwork groove. The belt conveyor 15 driven by a driving device (not shown)
A bucket 14 is provided, and the bucket 14 is provided so as to be able to move forward and backward toward the tunnel face together with the bucket 14.
It is a device that carries out earth and sand by rotating so that earth and sand is placed on the ground. The wheels 15a of the belt conveyor 15 are provided on the rails 15b provided at the bottoms of the first cylindrical portion 1 and the second cylindrical portion 5 so as to be movable forward and backward toward the tunnel face by running. Can be Here, the belt conveyor 15 does not have to be configured to run on the rails 15b by the wheels 15a, but may be configured to run by tires or crawlers. As shown in FIG. 11, when the trench 12 is excavated above the tunnel, the existence of the bucket 14 and the belt conveyor 15 does not hinder the chain cutter 11 for excavating the trench. Chain cutter 1
1 and a ground bucket 14 in the support plates 12a and 12c shown in FIGS.
With the bucket 14, the belt conveyor 15, and the truck 52, the excavation work can be efficiently and simultaneously performed toward the tunnel face backward by discharging when necessary. However, as shown in FIG. 12, when excavating the cylindrical open channel 12 below the tunnel,
The bucket 14 and the belt conveyor 15 interfere with the open-groove excavating chain cutter 11 and are retracted rearward toward the tunnel face.

Next, a method of excavating a tunnel using the tunnel excavating apparatus shown in FIGS. 11 and 12 will be described. First, the open-groove excavation chain cutter 11 extending in the longitudinal direction of the tunnel is rotated in a cylindrical shape along the outer periphery of the face, and the open-groove excavation chain cutter 11 is moved closer to the apex. 11
Are moved forward toward the face, and as the open-groove digging chain cutter 11 descends from the apex, the open-groove digging chain cutter 11 is rotated in a cylindrical shape while moving backward toward the face, and the face is rotated. While the first cylindrical open groove 12 is excavated so as to be inclined toward, the first cylindrical open groove 12 is filled with a hardening material 42 such as instant hardening concrete by the hardening material injection pipe 13. Then, as shown in FIG. 16, the first cylindrical support plate 12a is formed so as to be inclined toward the face. next,
The portion surrounded by the first cylindrical support plate 12a is cut by the bucket 14 or other excavator to make the face 2
00 is excavated so as to be inclined toward the face. Here, the face face 200 may be excavated while being inclined stepwise toward the face.

Next, the chain cutter 11 for excavating the openwork groove
Is advanced, and then the cylindrical cutter 11 is rotated in a cylindrical shape along the outer periphery of the tunnel face, and the open-groove digging chain cutter 11 is moved closer to the vertex.
As it moves forward toward the face, as the open-groove digging chain cutter 11 descends from the apex, the open-groove digging chain cutter 11 is rotated rearward toward the face, and is turned into a cylindrical shape. While the rear end portion is close to the front end portion of the shape support plate 12a, or while excavating the next continuous cylindrical openwork groove 12 toward the face,
The curable material 42 is filled in the next cylindrical open groove 12 by the curable material injection pipe 13 and cured, and the next cylindrical support plate 12a is formed so as to be inclined toward the face. Next, the portion surrounded by the next cylindrical support plate 12a is separated by a bucket 14 or another excavator.
The face 200 is excavated so as to be inclined toward the face. Here, the face face 200 may be excavated while being inclined stepwise toward the face.

As shown in FIG. 11, when the open groove 12 is excavated above the tunnel, the bucket 14 and the belt conveyor 15 do not interfere with the open groove groove chain cutter 11. Therefore, the work of digging the watermark groove 12 by the chain cutter 11 for digging the groove and the work of digging by the bucket 14 of the ground in the support plates 12a and 12c shown in FIG. The truck 52 can efficiently and simultaneously perform the operation of discharging backward when necessary toward the tunnel face. However, as shown in FIG. 12, when excavating the cylindrical watermark groove 12 below the tunnel, the bucket 14 and the belt conveyor 15 interfere with the chain cutter 11 for excavating the groove. Retreat to the rear. Hereinafter, the next cylindrical support plates 12a are formed, and the same steps are repeated. Here, the earth and sand excavated in the above-described process is separated by the bucket 14, the belt conveyor 15, and the truck 52.
Ejected when required backward to the tunnel face. In addition, the tunnel excavation method using another embodiment of the tunnel excavation device of the present invention shown in FIGS.
The open-groove excavation chain cutter 11 is advanced or retracted toward the face, but the second cylindrical portion 5 is advanced or retracted toward the face, and as a result, the open-groove excavation chain cutter is In some cases, the first cylinder 11 may be advanced or retracted toward the face, or the second cylindrical portion 5 may be advanced or retracted together with the open-groove excavating chain cutter 11 toward the face.

Next, another method of digging a tunnel using the tunnel digging device shown in FIGS. 11 and 12 will be described. First, the watermark groove drilling chain cutter 11 extending in the tunnel longitudinal direction is rotated while being advanced spirally along the outer periphery of the tunnel face, and as the watermark groove drilling chain cutter 11 approaches the vertex, the watermark is cut. The chain cutter 11 for groove excavation is advanced toward the face, and the chain cutter 11 for groove excavation is spirally moved backward toward the face as the chain cutter 11 for groove cut is lowered from the top. The curable material 42 is filled into the spiral groove 12b by the curable material injection pipe 13 and is cured while the spiral groove 12b is excavated so as to be inclined toward the face. Then, the spiral support plate 12c is formed so as to be inclined toward the face. Next, the portion surrounded by the spiral support plate 12c is
Excavation is performed by the bucket 14 or other excavation means so that the face face 200 is inclined toward the face.
Here, the face face 200 may be excavated while being inclined stepwise toward the face.

Next, the excavated earth and sand excavated in the above process is discharged to the rear of the tunnel face by the bucket 14, the belt conveyor 15 and the truck 52 when necessary.
Here, as shown in FIG. 11, when the watermark groove 12 is excavated above the tunnel, the existence of the bucket 14 and the belt conveyor 15 does not hinder the watermark groove excavating chain cutter 11. Excavation work of the openwork groove 12 by the chain cutter 11 for groove excavation;
Support plate 12a, 1 shown in FIG.
Excavation work by the bucket 14 of the ground in 2c, and
Bucket 14, belt conveyor 15, and truck 52
Thereby, the operation of discharging the air to the tunnel face rearward when required can be efficiently and simultaneously performed. However, as shown in FIG. 12, when excavating the cylindrical watermark groove 12 below the tunnel, the bucket 14 and the belt conveyor 15 interfere with the chain cutter 11 for excavating the groove. Retreat to the rear. In addition, each of the watermark grooves 12 and 12b has an intermediate portion curved so as to be depressed outside the tunnel, but may extend linearly in the longitudinal direction of the tunnel. FIG.
1. In the tunnel excavation method using another embodiment of the tunnel excavation device of the present invention shown in FIG. 12, the chain cutter 11 for excavating the trench is moved forward or backward toward the face, but the second Is advanced or retracted toward the face, and consequently the open-groove digging chain cutter 11 is advanced or retracted toward the face, or the open-groove digging chain cutter In some cases, the second cylindrical portion 5 may be moved forward or backward together with 11 toward the face.

[0048]

According to the tunnel digging apparatus and the tunnel excavation method of the present invention, the support plate is formed so as to be inclined toward the face, so that the positioning accuracy of the end surface of the support plate is improved, and the support plate and the next support plate are formed. Improve the bonding condition of the plate. Furthermore, by excavating the face face inclining toward the face face or excavating in a stepwise manner to maintain the independence of the face face, especially, the face face of a large section or soft ground collapses This prevents the rock bolts from penetrating into the face face, thereby eliminating the need for reinforcement work such as spraying concrete.

[0049]

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of a tunnel excavation device of the present invention.

FIG. 2 is an enlarged plan view of a main part of one embodiment of the tunnel excavation device of the present invention.

FIG. 3 is a front view of one embodiment of the tunnel excavation device of the present invention.

FIG. 4 is a partial cross-sectional view of one embodiment of the tunnel excavation device of the present invention.

FIG. 5 is a partial cross-sectional view of one embodiment of the tunnel excavation device of the present invention.

FIG. 6 is a partial sectional view of one embodiment of the tunnel excavation device of the present invention.

FIG. 7 is a partial configuration diagram of an embodiment of the tunnel excavation device of the present invention.

FIG. 8 is a partial cross-sectional view of one embodiment of the tunnel excavation device of the present invention.

FIG. 9 is a side view of another embodiment of the tunnel excavation device of the present invention.

FIG. 10 is a partial cross-sectional view of another embodiment of the tunnel excavation device of the present invention.

FIG. 11 is an explanatory view showing a state in which another embodiment of the tunnel excavating device of the present invention excavates earth and sand simultaneously with excavating a watermark groove above a tunnel.

FIG. 12 is an explanatory view showing a state in which a still another embodiment of the tunnel excavation device of the present invention excavates a trench below a tunnel, but does not discharge excavated earth and sand.

FIG. 13 is a front view of still another embodiment of the tunnel excavation device of the present invention.

FIG. 14 is a plan view of still another embodiment of the tunnel excavation device of the present invention.

15 to FIG. 10 of the tunnel excavation device of the present invention.
It is a block diagram of the arch-shaped support plate formed by the embodiment shown in FIG.

FIG. 16 to FIG. 1 of the tunnel excavation device of the present invention.
FIG. 5 is a configuration diagram of a cylindrical support plate formed by the embodiment shown in FIG. 4.

FIG. 17 to FIG. 1 of the tunnel excavation device of the present invention.
FIG. 5 is a configuration diagram of a spiral support plate formed by the embodiment shown in FIG. 4.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 1st cylindrical part 2 Tunnel 3 inner peripheral wall 5 2nd cylindrical part 8 Rotating frame 9,109 Chain cutter guide member 11,11a, 11b, 101 Watertight groove excavation chain cutter 12,12b Waterproof groove 12a Cylindrical support Plate 12c Spiral support plate 13,112 Curable material injection tube 14 Bucket 15 Belt conveyor 103 Arch support plate 105 Traveling device 106 Arch guide frame 108 Moving frame

Claims (21)

[Claims] A traveling device configured to travel on a lower plate of a tunnel; an arch-shaped guide frame fixed to the traveling device and having a similar shape to a cross-section of the tunnel; and moving along the arch-shaped guide frame. A moving frame, a guide member for a chain cutter, which is fixed to the moving frame and extends obliquely upward toward the face, and provided so as to be moved along the guide member for the chain cutter, A chain cutter for excavating a trench along the outer periphery of the face by extending in the longitudinal direction and being driven by circulation, a chain cutter for drilling a trench along the outer periphery of the face; A curable material injection pipe for injecting a curable material into the groove to form an arch-shaped support plate; As the arm approaches the vertex of the arched guide frame,
The watermark groove digging chain cutter is advanced toward the face along the chain cutter guide member, and as the watermark groove digging chain cutter descends from the vertex of the arched guide frame together with the moving frame. Moving the chain cutter for excavating the openwork groove toward the face along the guide member for the chain cutter, and controlling the arch-shaped support plate to be inclined toward the face. A tunneling excavation device, comprising: 2. The tunnel excavation device according to claim 1, wherein, instead of the control device, the open-groove excavation chain cutter approaches the vertex of the arched guide frame together with the moving frame.
The traveling device is advanced toward the face, and the open-groove excavating chain cutter descends from the vertex of the arch-shaped guide frame together with the moving frame,
The traveling device is moved rearward toward the face,
A tunnel excavation device, comprising: a control device that controls the arch-shaped support plate to be formed so as to be inclined toward the face. 3. The tunnel excavating device according to claim 1, wherein, instead of the control device, the openwork groove excavating chain cutter approaches the vertex of the arched guide frame together with the moving frame.
The watermark groove digging chain cutter is advanced toward the face along the chain cutter guide member, and the traveling device is advanced toward the face, and the watermark groove digging chain cutter is As it moves down from the apex of the arch-shaped guide frame together with the moving frame, the open-groove excavation chain cutter is moved rearward toward the face along the chain cutter guide member, and the traveling device is provided with the moving device. A tunnel excavation device, comprising: a control device that moves rearward toward a face and controls the arch-shaped support plate to be formed to be inclined toward the face. 4. A traveling device configured to travel on a lower plate of a tunnel; an arch-shaped guide frame fixed to the traveling device and having a shape similar to the cross section of the tunnel and inclined toward a cutting face; A moving frame that is moved along the guide frame, a guide member for a chain cutter that is fixed to the moving frame, and extends obliquely upward toward the face, and is moved along the guide member for the chain cutter. Is provided in such a manner as to extend in the longitudinal direction of the tunnel, and is driven by circulation, so as to dig a watermark groove along the outer periphery of the face, and to move together with the watermark groove digging chain cutter. Curable material that is provided so as to form an arch-shaped support plate so as to inject a curable material into the openwork groove and incline toward the face. Tunnel boring apparatus, comprising the the injection tube. 5. The arch-shaped guide frame is provided with a pair of racks in parallel along the longitudinal direction of the arch-shaped guide frame, and comprises a reduction gear and a motor with a brake, and is fixed to the moving frame. The tunnel excavation device according to claim 4, wherein a pair of pinions fixed to an output shaft extending in a substantially horizontal direction of the driving device are engaged with the pair of racks. 6. The chain cutter for excavating the openwork groove,
As the moving frame approaches the vertex of the arch-shaped guide frame, the openwork groove drilling chain cutter is
Advancing toward the face along the chain cutter guide member, the watermark groove excavation chain cutter descends from the apex of the arch-shaped guide frame together with the moving frame, and the watermark groove excavation chain cutter is moved. 5. A control device for moving backward along the chain cutter guide member toward the face and controlling the arch-shaped support plate so as to be inclined toward the face. Or the tunnel digging device according to 5. 7. The chain cutter for excavating the openwork groove,
As it approaches the vertex of the arched guide frame together with the moving frame, the traveling device is advanced toward the face, and the open-groove digging chain cutter is moved from the vertex of the arched guide frame together with the moving frame. 6. The control device according to claim 4, further comprising a control device for moving the traveling device rearward toward the face as it descends, and controlling the arch-shaped support plate to be formed to be inclined toward the face. The tunnel digging device as described. 8. The chain cutter for excavating the openwork groove,
As the moving frame approaches the vertex of the arch-shaped guide frame, the openwork groove drilling chain cutter is
Along with the chain cutter, the advancing device is moved toward the face along the guide member, and the traveling device is advanced toward the face, and the open-groove groove excavating chain cutter is moved along with the moving frame into the arched guide frame. As it descends from the apex, the watermark groove excavation chain cutter is moved rearward toward the face along the chain cutter guide member, and the traveling device is moved rearward toward the face, The tunnel excavation device according to claim 4 or 5, further comprising a control device that controls the arch-shaped support plate so as to be inclined toward the face. 9. A first cylindrical portion which is extendable to press an inner peripheral wall of the tunnel and presses the inner peripheral wall in the tunnel, the first cylindrical portion being disposed concentrically with the tunnel. A second gripper that is extendable to be substantially the same diameter as the first cylindrical portion and is disposed concentrically with the first cylindrical portion in the tunnel. A cylindrical portion, provided between the first cylindrical portion and the second cylindrical portion,
By expanding and contracting, an expansion and contraction device that moves the first cylindrical portion and the second cylindrical portion closer to or away from each other, and at the tip of the second cylindrical portion, concentrically with the second cylindrical portion, A rotating frame rotatably provided with respect to the second cylindrical portion; and a chain cutter fixed to the rotating frame and extending obliquely from a side of the second cylindrical portion toward a face. A guide member, and a guide groove provided to be moved along the chain cutter guide member, extending in the longitudinal direction of the tunnel, and being driven to circulate, thereby excavating an open groove along the outer periphery of the face. A groove cutter for drilling an open groove; and a curable material provided to move together with the chain cutter for drilling the open groove, injecting a curable material into the open groove to form a cylindrical support plate or a spiral support plate. As the curable material injection pipe and the chain cutter for drilling the open groove approach the vertex of the second cylindrical portion together with the rotating frame, the chain cutter for drilling the open groove is moved along the guide member for the chain cutter. Forward toward the face, and the open-groove excavation chain cutter descends from the apex of the second cylindrical portion together with the rotating frame,
The watermark groove excavation chain cutter is moved rearward toward the face along the chain cutter guide member, and the cylindrical support plate or the spiral support plate is
And a control device for controlling to be formed so as to be inclined toward the face. 10. The tunnel excavation device according to claim 9, wherein, instead of the control device, the open-cut trench cutting chain cutter moves along with the rotating frame toward the vertex of the second cylindrical portion, and the second cutter moves. The cylindrical portion is advanced toward the face, and the open-cut groove drilling chain cutter descends from the vertex of the second cylindrical portion together with the rotating frame, so that the second cylindrical portion is moved to the face. To the rear,
A tunnel excavation device, comprising: a control device that controls the cylindrical support plate or the spiral support plate so as to be inclined toward the face. 11. The tunnel excavation device according to claim 9, wherein, instead of the control device, as the chain cutter for excavating the open groove approaches the vertex of the second cylindrical portion together with the rotating frame, the open groove is formed. A chain cutter for excavation is advanced toward the face along the guide member for chain cutter, and the second cylindrical portion is advanced toward the face, and the chain cutter for excavating the open-groove groove is configured as follows. As the rotating frame moves down from the apex of the second cylindrical portion, the open-groove excavation chain cutter is moved rearward toward the face along the chain cutter guide member, and the second cylinder is moved. Part is moved backward toward the face, and the cylindrical support plate or the spiral support plate is moved toward the face. Tunnel boring apparatus, comprising the control to the control device so as to be formed by oblique. 12. The rotating frame according to claim 9, wherein the rotating frame is formed in an annular shape having substantially the same diameter as the second cylindrical portion, and is rotatably provided at a distal end of the second cylindrical portion. The tunnel digging device as described. 13. A bucket for scooping up earth and sand excavated by the chain cutter for excavating the openwork groove, and the bucket is provided, and the bucket is provided movably forward and rearward with the bucket toward the face. The tunnel excavation device according to any one of claims 9 to 12, further comprising: a belt conveyor on which earth and sand are placed and which carries the earth and sand by rotating. 14. The guide member for a chain cutter,
The tunnel cutter extends so as to extend in the longitudinal direction of the tunnel, and the middle portion is curved to be depressed outside the tunnel, and the watermark groove excavation chain cutter has the same curvature as the guide member for the chain cutter, and the middle portion is depressed outside the tunnel. 14. The tunnel digging device according to claim 1, wherein the tunnel digging device is curved. 15. The tunnel excavation device according to claim 1, wherein the chain cutter guide member and the openwork groove excavation chain cutter extend linearly in the longitudinal direction of the tunnel. 16. A tunnel excavation method using the tunnel excavation device according to claim 1, wherein the first arch-shaped open groove is excavated so as to be inclined toward the face. A curable material is filled in the openwork groove and cured to form a first arch-shaped support plate inclined toward the face, and a portion surrounded by the first arch-support plate is the face. Then, the rear end is close to the front end of the first arch-shaped support plate, or the next arch-shaped open groove that is continuous is inclined toward the face. Filling the curable material into the next arch-shaped open groove while curing, and curing the next arch-shaped groove to form a next arch-shaped support plate inclined toward the face, Depending on the support version The excavated portion is excavated so as to be inclined toward the face, and the same process is repeated thereafter, and the earth and sand excavated in the process is discharged rearward toward the face when necessary. Tunnel excavation method. 17. The tunnel excavation method using the tunnel excavation device according to any one of claims 9 to 13, wherein the first cylinder is excavated so as to incline toward the face, and the first cylinder is excavated. A curable material is filled in the openwork groove and cured to form a first cylindrical support plate inclined toward the face, and a portion surrounded by the first cylindrical support plate is the face. Then, the rear end is close to the front end of the first cylindrical support plate, or the next continuous cylindrical open groove is inclined toward the face. While digging in, filling the curable material in the next cylindrical open groove, and curing,
Forming the next cylindrical support plate that inclines toward the face, excavating the portion surrounded by the next cylindrical support plate so as to incline toward the face, and thereafter repeating the same steps Performing a tunnel excavation method, wherein the earth and sand excavated in the step is discharged backward toward the face as required. 18. A tunnel excavation method using the tunnel excavation device according to any one of claims 9 to 13, wherein the spiral watermark groove is excavated so as to be inclined toward the face, and the inside of the spiral watermark groove is excavated. To form a spiral support plate inclined toward the face, and a portion surrounded by the spiral support plate is inclined toward the face when necessary. And excavating the earth and sand excavated in the above step toward the face in a required manner, when necessary. 19. Excavation is performed in a stepwise manner.
19. The tunnel excavation method according to any one of 6 to 18. 20. The tunnel excavation method according to claim 16, wherein each of the watermark grooves has an intermediate portion curved so as to be depressed outside the tunnel. 21. The tunnel excavation method according to claim 16, wherein each of the watermark grooves extends linearly in the longitudinal direction of the tunnel.