JPH09235980A - Tunnel-excavating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and efficiently excavate ground without replacing working machines. SOLUTION: A mounting drum 2 for working machines constituted of a circular drum body opened at both front and rear ends is supported by a plurality of rollers supporting the periphery so that the drum body can be freely rotated around the horizontal axis, in the inside of a traveling frame base 1. The inside of the drum is peripherally divided into a plurality of mounting chambers for working machines 8a, 8b, 8c and a hydraulic rock drill 10a, a hydraulic rock crusher 10b, a hydraulic rock breaker 10c are installed on the floor slab of respective chambers so as to be transferable back and forth. The mounting drum 2 is rotated at first to position the chamber 8a provided with the hydraulic rock drill 10a to a specified rotary position and drill the cutting face by the hydraulic rock drill 10a. Then, the drum is turned by a specified angle to crack the peripheral cutting face of the drilling hole by the hydraulic rock crusher 10b and further, the adjacent chamber is positioned at a specified rotary position and the cutting face is broken by the rock breaker 10c. The discharged soil by excavation is scraped out by the mucking machines installed at both rear sides of the traveling frame base.

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 hard rock layer by a non-blasting method.

[0002]

2. Description of the Related Art Conventionally, when tunneling a hard rock layer by a non-blasting method, a rock drill is used to drill a face, and an extension rod of a rock drill is inserted into the hole to crack the surrounding face. In general, a method is employed in which the face is crushed by a breaker, and is carried out by a shearing device such as a backhoe or a belt conveyor.

[0003]

However, in the above-mentioned conventional excavation method, a drilling machine, a rock drill, a breaker and a shearing machine are alternately arranged in front of a face in each process from drilling to shearing. At present, the construction efficiency is poor because the construction is replaced, and the excavation amount per unit time is as small as about 2.0m3 / h at present.

[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
c has a hydraulic rock drill 10 on its floor slabs 9a, 9b, 9c.
a, using a tunnel excavator in which a hydraulic rock crusher 10b and a hydraulic breaker 10c are respectively installed, first, the work equipment mounting drum 2 is rotated to position the work equipment mounting chamber 8a in which the hydraulic rock drill 10a is installed at a predetermined rotation position. In this state, the cutting face is drilled by the hydraulic rock drill 10a.
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 hydraulic rock breaking machine 10b cracks the surrounding face of the drilling hole, and further moves the work machine mounting drum 2 by a predetermined angle. The present invention proposes a tunnel excavation method in which the working machine mounting room 8c is rotated to position the working machine mounting room 8c at a predetermined rotation position, and the face is crushed by a breaker 10c.

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.
a, 9b, 9c on the hydraulic rock drill 10a, hydraulic rock drill 10
b, using the tunnel excavator in which the hydraulic breakers 10c are respectively installed, first rotate the work equipment mounting drum 2 to position the work equipment mounting chamber 8a in which the hydraulic rock drill 10a is installed at a predetermined rotation position, and in this state, Hydraulic rock drill 10a
Then, the working machine mounting drum 2 is further rotated by a predetermined angle to position the adjacent working machine mounting chamber 8b at a predetermined rotation position, and in this state, the peripheral face of the hole is cracked by the hydraulic rock breaking machine 10b. Then, the working machine mounting drum 2 is further rotated by a predetermined angle to further position the adjacent working machine mounting chamber 8c at a predetermined rotation position, the face is crushed by the breaker 10c, and the earth and sand discharged by the excavation are transferred to the traveling platform. The present invention proposes a tunnel excavation method in which scrapers 14 installed on both sides of No. 1 scrape the scraps and carry them 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.
a, 9b, 9c on the hydraulic rock drill 10a, hydraulic rock drill 10
b, Using a tunnel excavator in which the hydraulic breakers 10c are respectively movably installed in the front-rear direction, first rotate the work machine mounting drum 2 to move the work machine mounting chamber 8a in which the hydraulic rock drilling machine 10a is installed to a predetermined rotation position. In this state, the face is drilled by the hydraulic rock drill 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 a predetermined rotation position. Hydraulic rock cutter 10b
Cracks are formed in the surrounding face of the hole by drilling, and the work machine mounting drum 2 is further rotated by a predetermined angle to position the adjacent work machine mounting chamber 8c at a predetermined rotation position. The face is crushed by the breaker 10c and excavated. The present invention proposes a tunnel excavation method in which the earth and sand discharged by the method is scraped by a shearing machine 14 installed on both sides of the traveling gantry 1 and carried out rearward.

According to the present invention, 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 about its horizontal axis inside a traveling mount. The inside of the machine-equipped drum is circumferentially divided into a plurality of work machine-equipped chambers, and each work machine-equipped room has a hydraulic cutting machine that allows a tool mounting arm that descends hydraulically on the floor slab to be pivotable about a vertical axis. Using a tunnel excavator in which rock drills, hydraulic rock breakers, and hydraulic breakers are installed so as to be movable in the front-rear direction, the work machine mounting drum where the hydraulic rock drilling machine is installed is first rotated by rotating the working machine mounting drum. In this state, the face is drilled with a hydraulic rock drill, and then the work machine mounting drum is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position. Drilling by machine The surrounding face is cracked, 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, the face is crushed by a breaker, and the earth and sand discharged by excavation travels. The present invention proposes a tunnel excavation method in which a shearing machine installed on both sides of a gantry scrapes the material and carries it out rearward.

[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.
b and 8c are moved to predetermined rotation positions, respectively, while the hydraulic rock drill 10a, the hydraulic rock cutter 10b, and the hydraulic breaker 1
0c is used individually for each process in sequence or in combination at the same time.
Excavation work can be performed quickly and efficiently without changing work machines.

The hydraulic rock drilling machine 10a, the hydraulic rock breaking machine 10b, and the hydraulic breaker 10c can perform various operations individually and widely on the cutting face by pivoting the arm which is raised and lowered by hydraulic pressure up and down and left and right. Work machine loading room 8
Since various excavation operations can be performed at arbitrary rotational positions by rotating a, 8b, and 8c, construction of a large-section tunnel can be performed 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 thereof, 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. Is rotated by the motor 7 to rotate.

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 each of the working machine mounting chambers 8a, 8b, 8c has a floor slab 9a, 9b, 8c.
One or two or more hydraulic rock drills 10a, hydraulic rock breakers 10b, and hydraulic breakers 10c, each of which is a different kind of work machine, are installed on 9c.

The hydraulic rock drilling machine 10a, hydraulic rock breaking machine 10b, and hydraulic breaker 10c have their bases 11a, 11c, respectively.
b, 11c are movably mounted on advance / retreat guides 12 installed on the floor slabs 9a, 9c, 9d along the front-rear direction so that the installation position can be freely changed back and forth. 2 can be taken out behind.

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. In addition, the hydraulic rock drill 10a,
The hydraulic rock breaking machine 10b and the hydraulic breaker 10c can pivot the tool mounting arm 16 raised and lowered by hydraulic pressure around a vertical axis,
In addition, the work machine can be turned around a horizontal axis in the front-rear direction, so that work can be performed on a wide range of the face, and even when the work machine mounting chambers 8a, 8b, 8c are not located at the upper center, the tool of each work machine can be used. The mounting arm 16 can be operated in any direction.

Accordingly, the hydraulic rock drill 10a and the hydraulic rock drill 1
0b, the hydraulic breaker 10c is mainly used at the position of the upper center of the work machine mounting drum 2, but can be used not only at the upper center but also at any rotational position according to the work specification, and a plurality of work machines can be used simultaneously. And a plurality of working steps can be performed 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 tunnel excavation device having the above-mentioned configuration is used, and the traveling platform 1 is traveled along the rail 19 to the vicinity of the hard rock face, where the working machine mounted drum 2 is first rotated. The work machine mounting chamber 8a is mainly located at a predetermined rotation position such as the upper center, and in this state, the face is drilled by the hydraulic rock drill 10a, and then the work machine mounting drum 2 is further rotated by a predetermined angle to make the work machine. Mounting room 8b
Is located at a predetermined rotational position, such as the upper center,
In this state, the surrounding rod face is cracked by, for example, press-fitting an extension rod of the rock cutting machine 10b into the drilling hole, and the work machine mounting drum 2 is further rotated by a predetermined angle so that the work machine mounting chamber 8c
Is located at a predetermined rotational position, such as the upper center,
This face is crushed by the breaker 10c.

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 rock drilling machine is used. Perform rock bolting using a machine.

[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 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]

 1 Traveling Platform 2 Working Machine Drum 3 Circumferential Support Roller 4 End Face Pressing Roller 5 Gear 6 Drive Gear 7 Motor 8a Working Machine Loading Room 8b Working Machine Loading Room 8c Working Machine Loading Room 9 Floor Slab 10a Hydraulic Rock Breaker 10b Hydraulic Split Rock Machine 10c Hydraulic breaker 11a Base 11b Base 11c Base 12 Advance guide 13 Installation stand 14 Slipper ejector 15 Spraying robot 16 Tool mounting arm 17 Truck 18 Drive truck 19 Rail 20 Outrigger

Claims (4)

[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 circumferentially divided into a plurality of working machine mounting rooms, and each working machine mounting room is equipped with a tunnel excavator with hydraulic rock drills, hydraulic rock breakers, and hydraulic breakers installed on the floor slab. First, the work machine mounting drum is rotated to position the work machine mounting chamber in which the hydraulic rock drill is installed at a predetermined rotation position. In this state, the face is drilled with the hydraulic rock drill, and then the work machine mounting drum is used. Is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position, and in this state, a crack is formed in a peripheral face of the drilling hole by a hydraulic rock breaking machine, and the work machine mounting drum is further rotated by a predetermined angle. Further adjacent work equipment A tunnel excavation method wherein the loading chamber is positioned at a predetermined rotation position, and the face is crushed by a breaker. 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 circumferentially divided into a plurality of working machine mounting rooms, and each working machine mounting room is equipped with a tunnel excavator with hydraulic rock drills, hydraulic rock breakers, and hydraulic breakers installed on the floor slab. First, the work machine mounting drum is rotated to position the work machine mounting chamber in which the hydraulic rock drill is installed at a predetermined rotation position. In this state, the face is drilled with the hydraulic rock drill, and then the work machine mounting drum is used. Is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position, and in this state, a crack is formed in a peripheral face of the drilling hole by a hydraulic rock breaking machine, and the work machine mounting drum is further rotated by a predetermined angle. Further adjacent work equipment The loading chamber is located at a predetermined rotation position, the face is crushed by a breaker, and the earth and sand discharged by the excavation is scraped by a shearing machine installed on both sides of the traveling gantry and is carried out rearward. Excavation method. 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 divided into a plurality of working machine rooms in the circumferential direction, and in each working machine room, a hydraulic rock drill, a hydraulic rock breaker, and a hydraulic breaker are installed on the floor slab so as to be movable in the front-rear direction. First, the working machine mounting drum is rotated to position the working machine mounting chamber at a predetermined rotation position, and in this state, the face is drilled with a hydraulic rock drill, and then the working machine mounting drum is used. Is further rotated by a predetermined angle, the working machine mounting room in which the hydraulic rock drill is installed is positioned at a predetermined rotation position, and in this state the face is drilled by the hydraulic rock drill,
Next, the work machine mounting drum is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position, and in this state, a crack is formed in a peripheral face of the hole by a hydraulic rock breaking machine,
Further, the work machine mounting drum is rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position, the face is crushed by a breaker, and the earth and sand discharged by excavation is removed by slips installed on both sides of the traveling platform. A tunnel excavation method characterized by scraping by a dispenser and transporting it backward. 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 rock drilling machine with a tool mounting arm that can be raised and lowered by hydraulic pressure on the floor slab about a vertical axis. Using a tunnel excavator in which a hydraulic rock drill and a hydraulic breaker are installed so as to be movable in the front-rear direction, the work machine mounting chamber where the hydraulic rock drilling machine is installed is positioned at a predetermined rotation position by first rotating the working machine mounting drum. In this state, the face is drilled with a hydraulic rock drill, and then the work machine mounting drum is further rotated by a predetermined angle to position the adjacent work machine mounting chamber at a predetermined rotation position. On the face around the hole The cracks are formed, 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.The face is crushed by a breaker. A tunnel excavation method characterized by scraping by a shearing machine installed in the area and transporting it backward.