JP2767231B2 - Tunnel excavation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

This invention relates to a tunnel excavation method,
The present invention mainly relates to a method for efficiently excavating a face of a soft rock layer by a non-blasting method.

[0002]

2. Description of the Related Art Conventionally, when tunneling a soft rock layer by a non-blasting method, a face corresponding to the periphery of the tunnel is excavated by a boom header, and a face inside the tunnel is crushed and excavated by a breaker. In general, a method is used in which a receiving drilling machine drills holes continuously in an arch shape at a portion corresponding to the top end of the tunnel, and excavation debris is carried out by a debris removal device such as a backhoe or a belt conveyor.

[0003]

However, in the above-mentioned conventional excavation method, a drilling machine, a breaker, a pre-drilling machine and a shearing machine are placed in front of the face in each step from drilling to shearing. At present, the construction efficiency is poor and the excavation amount per unit time is extremely small because the construction is alternately replaced.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a traveling platform 1;
A work machine mounting drum 2 having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers 3 so as to be rotatable around its horizontal axis. In the circumferential direction, a plurality of working machine mounting chambers 8a,
8b, 8c, and each working machine mounting room 8a, 8b, 8
For c, a tunnel excavator in which a hydraulic boom header 10a, a hydraulic breaker 10b, and a hydraulic drilling machine 10c are respectively installed on the floor slab 9 is used. Is positioned at a predetermined rotation position, and in this state, the working face is drilled with the hydraulic boom header 10a, and then the work machine mounting drum 2 is further rotated by a predetermined angle and the adjacent work machine mounting chamber is rotated. 8b is positioned at a predetermined rotation position. In this state, the face is crushed by the hydraulic breaker 10b, and the work machine mounting drum 2 is further rotated by a predetermined angle to further position the adjacent work machine mounting chamber 8c at the predetermined rotation position. A tunnel excavation method is proposed in which a face is continuously drilled in an arch shape at a portion corresponding to a top end of a tunnel by a drilling machine 10c. It is intended.

According to the present invention, a working machine mounting drum 2 having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers 3 inside a traveling mount 1 so as to be rotatable about its horizontal axis. The interior of the working machine mounting drum 2 is circumferentially divided into a plurality of working machine mounting chambers 8a, 8b, 8c, and each of the working machine mounting chambers 8a, 8b, 8c has a floor slab 9 attached thereto.
Hydraulic boom header 10a, hydraulic breaker 10
b, using a tunnel excavator in which a hydraulic drilling machine 10c is installed, first, rotating the working machine mounting drum 2 to install a working machine mounting chamber 8 in which a hydraulic boom header 10a is installed.
a at a predetermined rotation position, and in this state, the face is drilled with the hydraulic boom header 10a.
Is further rotated by a predetermined angle to position the adjacent work machine mounting chamber 8b at a predetermined rotation position. In this state, the hydraulic breaker 10
b, the working machine mounting drum 2 is rotated by a predetermined angle to further position the adjacent working machine mounting chamber 8c at a predetermined rotation position, and this face is equivalent to the top end of the tunnel by the first drilling machine 10c. The face of the part to be drilled is continuously drilled in an arch shape, and the earth and sand discharged by the excavation
The present invention proposes a tunnel excavation method characterized in that it is scraped off by a shearing machine 14 installed on both sides of the device and carried out rearward.

According to the present invention, a working machine mounting drum 2 having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers 3 inside a traveling mount 1 so as to be rotatable about its horizontal axis. The interior of the working machine mounting drum 2 is circumferentially divided into a plurality of working machine mounting chambers 8a, 8b, 8c, and each of the working machine mounting chambers 8a, 8b, 8c has a floor slab 9 attached thereto.
Hydraulic boom header 10a, hydraulic breaker 10
b, using a tunnel excavator in which a hydraulic drilling machine 10c is respectively movably installed in the front-rear direction, firstly rotates a work machine mounting drum 2 to set a working machine mounting chamber 8a in which a hydraulic boom header 10a is installed in a predetermined position. In this state, the working face is drilled with the hydraulic boom header 10a, and then the work machine mounting drum 2 is further rotated by a predetermined angle to position the adjacent work machine mounting chamber 8b at the predetermined rotation position. In this state, the face is crushed by the hydraulic breaker 10b, the work machine mounting drum 2 is further rotated by a predetermined angle, and the adjacent work machine mounting chamber 8c is positioned at a predetermined rotation position, and the face is tunneled by the first drilling machine 10c. The face corresponding to the top end is continuously drilled in the shape of an arch in the face, and the earth and sand discharged by the excavation is fed to the slipper 14 installed on both sides of the traveling gantry 1.
The present invention proposes a tunnel excavation method characterized in that the tunnel is excavated and transported backward.

According to the present invention, a working machine mounting drum 2 having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers 3 inside a traveling mount 1 so as to be rotatable about its horizontal axis. The interior of the working machine mounting drum 2 is circumferentially divided into a plurality of working machine mounting chambers 8a, 8b, 8c, and each of the working machine mounting chambers 8a, 8b, 8c has a floor slab 9 attached thereto.
Using a tunnel excavator in which a hydraulic boom header 10a, a hydraulic breaker 10b, and a hydraulic drilling machine 10c, each of which is capable of turning a tool mounting arm which is raised upward by hydraulic pressure around a vertical axis, are respectively movably movable in the front-rear direction. First, the work machine mounting drum 2 is rotated to move the hydraulic boom header 10a.
Is positioned at a predetermined rotation position, and in this state, the working face is drilled with the hydraulic boom header 10a, and then the work machine mounting drum 2 is further rotated by a predetermined angle and the adjacent work machine mounting chamber is rotated. 8b is positioned at a predetermined rotation position. In this state, the face is crushed by the hydraulic breaker 10b, and the work machine mounting drum 2 is further rotated by a predetermined angle to further position the adjacent work machine mounting chamber 8c at the predetermined rotation position. The face is continuously drilled in the shape of an arch in a portion corresponding to the top of the tunnel by a pre-piercing drilling machine 10c, and the earth and sand discharged by excavation is removed by a shearing machine 14 installed on both sides of the traveling gantry 1. The present invention proposes a tunnel excavation method characterized by scraping and carrying it backward.

[0008]

In the excavation work, the work machine mounting drum 2 is sequentially rotated in accordance with the work process, and the work machine mounting chambers 8a and 8 are rotated.
The working machine is replaced by using the hydraulic boom header 10a, the hydraulic breaker 10b, and the hydraulic drilling machine 10c individually for each process or simultaneously using a plurality of the hydraulic booms while moving the b and 8c to predetermined rotation positions. It is possible to perform excavation work quickly and efficiently without any need.

The hydraulic boom header 10a, the hydraulic breaker 10b, and the hydraulic drilling machine 10c can individually perform a wide variety of operations on the cutting face by pivoting the hydraulically raised arm up, down, left, and right. At the same time, since the work machine mounting rooms 8a, 8b, and 8c are rotated to perform various excavation operations at arbitrary rotation positions, it is possible to construct a large-section tunnel by excavating a face in a wider range as a whole.

[0010] The earth and sand discharged by the excavation is scraped off by a shearing machine 14 and carried out backward by a belt conveyor or the like.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a tunnel excavator used in the method of the present invention will be described. As shown in FIG. 1, a circular fuselage having a front and rear end opened inside a hangar-like traveling gantry 1 having a substantially arch shape. The work machine mounting drum 2 is rotatably supported around its horizontal axis.

The work machine mounting drum 2 has a peripheral surface supporting roller 3 rotatably provided at a plurality of positions on the inner surface of the traveling gantry 1 along the outer peripheral surface thereof, and a circumferential surface of an annular rear end surface of the work machine mounting drum 2. It is rotatably supported by an end surface pressing roller 4 rotatably provided at the rear of the traveling gantry 1 along the direction,
A gear 5 such as a chain or a rack is attached to the outer periphery along the circumferential direction, and a driving gear 6 such as a driving sprocket or a pinion gear rotatably provided on the traveling gantry 1 meshes with the gear 5. It is configured to rotate by being driven to rotate by a motor 7.

The work machine mounting drum 2 may be configured such that a part or all of the peripheral surface supporting roller 3 can be driven to rotate by a motor and rotated by the driving peripheral surface supporting roller 3.

The interior of the working machine mounting drum 2 is circumferentially divided into a plurality of working machine mounting chambers 8a, 8b, 8c, and the working machine mounting chambers 8a, 8b, 8c have floor slabs 9a, 9c,
Hydraulic boom header 10 which is a different working machine on 9d
a, one or two or more hydraulic breakers 10b and hydraulic pre-piercing drills 10c are installed, respectively.

The hydraulic boom header 10a, the hydraulic breaker 10b, and the hydraulic drilling machine 10c each have a base 11a, 11b, 11c mounted on a floor slab 9a, 9c, 9d in the forward / backward direction. So that the installation position can be freely changed back and forth, and if necessary, it can be taken out behind the work implement mounting drum 2.

The traveling gantry 1 is provided with installation pedestals 13 on both outer sides thereof. A slide excavator 14 such as a hydraulic shovel is installed on the traveling gantry 1 so as to be movable back and forth by guide rails and the like. A spraying robot 15 is installed inside the lower corner. Note that the hydraulic boom header 10a, the hydraulic breaker 10b, the hydraulic
c, the tool mounting arm 16 which is raised by hydraulic pressure can be turned around a vertical axis, and can be turned around a horizontal axis in the front-rear direction, so that a wide range of work can be performed on the face and the working machine is mounted. Even when the chambers 8a, 8b, 8c are not located at the upper center, the tool mounting arm 16 of each work machine can be operated in any direction.

Therefore, the hydraulic boom header 10a, the hydraulic breaker 10b, and the hydraulic drilling machine 10c are mainly used at the position of the upper center of the work machine mounting drum 2; It can be used in a rotating position and a plurality of working machines can be used simultaneously to perform a plurality of working steps simultaneously.

The traveling gantry 1 is driven to travel on rails 19 by a trolley 17 and a motor-driven driving trolley 18, stops at a construction position, and is supported and fixed by an outrigger 20.

In the tunnel excavation work, the traveling gantry 1 is moved along the rail 19 to the vicinity of the face by using the tunnel excavator having the above-described configuration. 8a is mainly located at a predetermined rotation position such as the upper center, and in this state, the face corresponding to the periphery of the tunnel is moved to the hydraulic boom header 1.
0a, and then the work machine mounting drum 2 is further rotated by a predetermined angle to position the work machine mounting chamber 8b mainly at a predetermined rotation position, such as the upper center, and in this state, the face inside the periphery of the tunnel is broken by the breaker 10b. The work machine mounting drum 8 is further rotated by a predetermined angle so that the work machine mounting chamber 8c is positioned at the upper center rotation position. Holes are continuously drilled in an arch shape on the face, and the inside thereof is excavated by the road header 10a in the same manner as described above, and the same process is continued.

The earth and sand discharged by the excavation is scraped off by a shearing machine 14, carried out backward by a belt conveyor or the like, and sprayed by a spraying robot 15 as needed, and a slide hydraulic boom header is used. Perform rock bolting using

[0021]

As described above, according to the present invention, the working machines in each room are sequentially rotated while sequentially rotating the working machine mounting drums in accordance with the work process and moving the working machine mounting chambers to predetermined rotation positions. It is possible to perform excavation work quickly and efficiently continuously without replacing work machines by using the work individually or in combination for each process.

The earth and sand discharged by the excavation can be immediately scraped off by a shearing machine installed on the side of the traveling gantry after the excavation, and can be conveyed backward by a belt conveyor or the like.

Each of the working machines can perform various operations on the face individually over a wide range by pivoting the hydraulically raised arm up, down, left, and right. Since various types of excavation work can be performed at the position, construction of a large-section tunnel can be performed by excavating a face in a wider area as a whole.

[Brief description of the drawings]

FIG. 1 is a front view of an excavator used in the present invention.

FIG. 2 is a cross-sectional plan view of the excavator used in the present invention.

FIG. 3 is a side view of the excavator used in the present invention.

FIG. 4 is a vertical sectional front view of a support roller portion of a work machine mounting drum of an excavator used in the present invention.

FIG. 5 is a vertical cross-sectional front view of a rotating mechanism of a work machine mounting drum of an excavator used in the present invention.

FIG. 6 is a rear view of the excavator used in the present invention.

FIG. 7 is a front view showing one embodiment of a working machine mounted drum according to the present invention.

FIG. 8 is a vertical sectional side view of a working machine mounted drum according to the present invention.

FIG. 9 is a cross-sectional plan view showing an example of the internal structure of the work implement mounting drum according to the present invention.

FIG. 10 is a cross-sectional plan view showing another example of the internal structure of the work implement mounting drum according to the present invention.

FIG. 11 is a front view showing another embodiment of the work machine mounted drum according to the present invention.

FIG. 12 is a longitudinal sectional side view showing another example of the internal structure of the work machine mounting drum according to the present invention.

FIG. 13 is a cross-sectional plan view showing another example of the internal structure of the working machine mounted drum according to the present invention.

FIG. 14 is a cross-sectional plan view showing another example of the internal structure of the work implement mounting drum according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling stand 2 Work machine mounting drum 3 Peripheral surface support roller 4 End surface pressing roller 5 Gear 6 Drive gear 7 Motor 8a Work machine mounting room 8b Work machine mounting room 8c Work machine mounting room 9 Floor slab 10a Hydraulic boom header 10b Hydraulic breaker 10c Hydraulic drilling drill 11a base 11b base 11c base 12 reciprocating guide 13 installation base 14 shearing machine 15 spray robot 16 tool mounting arm 17 bogie 18 drive bogie 19 rail 20 outrigger

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-111597 (JP, A) JP-A-5-33585 (JP, A) JP-A-5-321573 (JP, A) 280476 (JP, A) JP-A-6-317085 (JP, A) JP-A-8-109788 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E21D 9/00 E21D 9 / 10 E21D 11/10 E21C 11/02

Claims (4)

(57) [Claims] A working machine mounting drum having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers rotatably around its horizontal axis inside a traveling gantry. The inside of the drum is divided into a plurality of working machine mounting rooms in the circumferential direction, and in each working machine mounting room, a hydraulic excavator, a hydraulic breaker, and a hydraulic drilling machine are installed on the floor slab. Using the device, first, the work machine mounting drum is rotated to position the work machine mounting chamber in which the hydraulic boom header is installed at a predetermined rotation position. In this state, the face is drilled with the hydraulic boom header, and then the work machine mounting drum is used. The work machine mounting chamber is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position. A tunnel excavation method characterized in that the working machine mounting chamber in contact with the workpiece is positioned at a predetermined rotation position, and the face is continuously drilled in an arch shape at a portion corresponding to the top end of the tunnel by a pre-piercing drill. . 2. A work machine mounting drum having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers so as to be rotatable about its horizontal axis inside the traveling mount. The inside of the drum is divided into a plurality of working machine mounting rooms in the circumferential direction, and in each working machine mounting room, a hydraulic excavator, a hydraulic breaker, and a hydraulic drilling machine are installed on the floor slab. Using the device, first, the work machine mounting drum is rotated to position the work machine mounting chamber in which the hydraulic boom header is installed at a predetermined rotation position, and in this state, the face is drilled with the hydraulic boom header, and then the work machine mounting drum is used. The work machine mounting chamber is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position. The working machine mounting chamber in contact is positioned at a predetermined rotation position, and the face is continuously drilled in an arch shape on the face corresponding to the top end of the tunnel by a first drilling machine. And a tunnel excavation method characterized in that a scraping machine installed on both sides of a traveling stand scrapes off and transports it backward. 3. A working machine mounting drum having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers rotatably driven around its horizontal axis inside the traveling mount. The inside of the drum is circumferentially divided into a plurality of working machine mounting rooms, and in each working machine mounting room, a hydraulic boom header, hydraulic breaker, and hydraulic drilling machine are freely movable in the front-rear direction on the floor slab. Using a tunnel excavator installed in, the work machine mounting drum is first rotated to position the work machine mounting chamber where the hydraulic boom header is installed at a predetermined rotation position, and in this state the face is drilled with the hydraulic boom header, Next, the work machine mounting drum is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at the predetermined rotation position. In this state, the face is crushed by a hydraulic breaker, and the work machine mounting drum is further moved to a predetermined position. Rotate the angle and position the adjacent work machine mounting room at the predetermined rotation position, and drill this hole continuously in an arch shape on the face of the part corresponding to the top of the tunnel by the pre-piercing drill, and excavate A tunnel excavation method characterized in that the discharged earth and sand is scraped off by a shearing machine installed on both sides of a traveling platform and carried out rearward. 4. A working machine mounting drum having a circular body with open front and rear ends is supported by a plurality of peripheral surface supporting rollers rotatably around its horizontal axis inside the traveling mount. The inside of the drum is divided into a plurality of working machine mounting rooms in the circumferential direction, and each working machine mounting room has a hydraulic boom header that allows a tool mounting arm that descends hydraulically on its floor slab to be pivotable about a vertical axis, Using a tunnel excavator in which a hydraulic breaker and a hydraulic drilling machine are installed to be movable in the front-rear direction, first, the work machine mounting drum is rotated to set the working machine mounting chamber where the hydraulic boom header is installed to a predetermined rotation position. In this state, the face is drilled with the hydraulic boom header, and then the work machine mounting drum is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at the predetermined rotation position. The face is crushed by a laker, the work machine mounting drum is further rotated by a predetermined angle, and the adjacent work machine mounting chamber is further positioned at a predetermined rotation position. A tunnel excavation method in which holes are continuously drilled in a face in an arch shape, and the earth and sand discharged by the excavation is scraped off by a shearing machine installed on both sides of a traveling mount and carried out rearward.