JPH08232600A - Muck conveying method - Google Patents

Abstract

PURPOSE: To facilitate muck-loading work and eliminate the need for a dumping car for muck delivery and reduce the danger of accidental hazards and protect a working environment from being damaged by the generation of dust and dirt or exhaust air. CONSTITUTION: In a tunnel excavation work, muck 14 of a cutting face 12 produced by blast is supplied to a movable crusher 3 with a turning type shovel loader 2. After the muck 14 is crushed into a specified size with the movable crusher 3, it is conveyed to a belt conveyer 6 and delivered outside. The turning type shovel loader 2 is capable of supplying the muck 14 to the movable crusher 3 if the muck 14 is ladled in a shovel 24 at the cutting face 12 side and turned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transporting shear generated in tunnel excavation work outside a tunnel.

[0002]

2. Description of the Related Art When a rock face is blasted to excavate in a tunnel excavation work, it is necessary to convey the shear of the face face caused by the blast to the outside of the tunnel. In tunnel excavation work,
Generally, as shown in FIG. 4 (A), first, a blasting hole 11 is punched by a punching machine 13 in a facet 12 of a tunnel 1, and explosive is loaded and blasted.

Next, as shown in FIG. 4 (B), a shovel loader 15 is used to dump a dump truck 16 into the shear 14 generated by blasting.
It will be loaded onto and transported outside the tunnel. Fig. 4 after slide-out
As shown in (C), the concrete spraying machine 17 carries out primary spraying of concrete on the roof of the excavated face, and the support 18 is built in the rear and the lining concrete 19 is placed.

[0004]

In the conventional tunnel excavation work as described above, since the shovel loader 15 is used to load the dump truck 16, the operator operates the steering handle each time the load is loaded. It is necessary to change the direction of the loader 15, which is inefficient. In addition, since the dump truck 16 frequently reciprocates in the narrow tunnel 1 due to the slip-out, there is a high risk of an accident, and dust is generated, and the exhaust gas pollutes the air, which deteriorates the working environment. To do. Further, there is a problem that the transport cost of the dump truck 16 increases as the tunnel length increases.

The present invention solves the above-mentioned problems in the shear transportation of tunnel excavation work, and the shovel loader 15 does not need to be steered to change the direction during the shear loading, and the loading operation becomes easy. Further, it is not necessary to use the dump truck 16 for carrying out the sludge, the risk of accident is reduced, the working environment is prevented from being deteriorated due to the generation of dust or exhaust gas, and the transportation cost is low and the efficient shear transportation method is provided. The purpose is to provide.

[0006]

According to the present invention, in tunnel excavation work, after a shaving of a face produced by blasting is supplied to a mobile crusher by a swivel excavator loader and crushed to a predetermined particle size by the mobile crusher. The above problem is solved by transferring to a belt conveyor and carrying it out of the tunnel.

[0007]

[Operation] The shearing of the cutting face generated by the blasting is supplied to the mobile crusher by the turning type shovel loader. At this time, the swivel excavator loader scoops the shovel on the face side,
When the upper revolving structure is revolved, it can be supplied to the mobile crusher in the subsequent stage, so that it is not necessary to steer and change the direction, and the loading operation becomes easy.

The mobile crusher crushes the slip to a predetermined particle size and then transfers it to a belt conveyor. The shear is crushed to a particle size that can be conveyed by a belt conveyor, so it can be carried out of the tunnel without any problems. Since a dump truck is not used to carry out the skid, the risk of accidents is low and the deterioration of the work environment due to the generation of dust and exhaust gas is prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a shear conveying method according to an embodiment of the present invention, FIG. 2 is a side view of a swivel excavator loader, and FIG.
[Fig. 3] is a side view of the mobile crusher. In this embodiment, a swivel excavator loader 2, a mobile crusher 3, a relay conveyor device 5, and a belt conveyor 6 are sequentially arranged in the tunnel 1 from the face 12 side.

The revolving shovel loader 2 is of an electric type, and an upper revolving structure 22 is provided on a lower traveling structure 21 via a revolving ring 23, and a boom 2 undulating at the front of the upper revolving structure 22.
5 and an arm 26 are attached, and a shovel 24 for scooping the slide 14 is supported by the tip of the arm 26. A horizontal reel device 27 is mounted on the rear portion of the lower traveling body 21, and a cable 28 for power supply is wound around the horizontal reel device 27.

The mobile crusher 3 has a chain conveyor 33, a crusher 34, and a swivel conveyor 3 on a traveling carriage 32.
5 and. The chain conveyor 33 has its rear part pivotally supported by the support frame 31 on the traveling carriage 32,
The tilt cylinder 36 provided between the chain conveyor 33 and the support frame 31 is tilted back and forth by contraction and extension. Skirt 3 for inserting the slip 14 at the front of the chain conveyor 3.
7 is attached.

A turning frame 39 is installed behind the support frame 31 on the traveling carriage 32. One end of the swivel conveyor 35 is pivotally supported by the swivel frame 39, and the undulating cylinder 3 provided between the swivel frame 39 and the swivel frame 39.
It is undulated by the expansion and contraction of 8. The relay conveyor device 5 has a relay conveyor 52 mounted on a moving carriage 51, and is provided at a distance between the stationary belt conveyor 6 in the subsequent stage and the mobile crusher 3 that advances as the face advances. In addition, an arbitrary number is arranged. When the distance between the belt conveyor 6 and the mobile crusher 3 becomes larger than a predetermined length, the belt conveyor 6 is extended.

The shear 14 of the cutting face 12 caused by blasting has a maximum diameter of 700 to 800 mm and is not suitable for being conveyed by the belt conveyor 6 as it is. Therefore, at the time of the shear transfer work, the shear 14 is supplied to the mobile crusher 3 by the turning type shovel loader 2. At this time, the tilting cylinder 36 of the mobile crusher 3 is contracted, the chain conveyor 33 is tilted forward, and the front end is grounded. The swivel excavator loader 2 scoops the slide 14 onto the shovel 24 on the side of the face 12, swivels the upper swing body 22, and supplies it to the skirt 37 of the mobile crusher 3 in the subsequent stage. Since the height of the skirt 37 is low, the loading operation can be performed extremely easily.

The thrown-in shear 14 is caused by the chain conveyor 3
At 3, the sheet is conveyed rearward and sent to the crusher 34.
The crusher 34 crushes the slip 14 to a particle size of 250 mm or less, and then transfers it from the swivel conveyor 35 to the relay conveyor 52. Since the shear 14 is crushed to a particle size that can be conveyed by the belt conveyor 6, it is carried out of the relay conveyor 52 through the belt conveyor 6 to the outside of the tunnel without any trouble. Since a dump truck is not used to carry out the skid, the risk of accidents is low and the deterioration of the work environment due to the generation of dust and exhaust gas is prevented.

[0015]

As described above, according to the shearing and conveying method of the present invention, it is not necessary to steer the shovel loader to change the direction during the shear loading, and the loading can be performed only by turning. Since loading work becomes easy and a dump truck is not used for shearing, the risk of accident can be reduced and the deterioration of working environment due to generation of dust or exhaust gas can be prevented.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a shearing conveyance method which is an embodiment of the present invention.

FIG. 2 is a side view of a swivel excavator loader.

FIG. 3 is a side view of a mobile crusher.

FIG. 4 is an explanatory diagram of a conventional tunnel excavation work.

[Explanation of symbols]

 1 Tunnel 2 Swiveling Excavator Loader 3 Mobile Crusher 5 Relay Conveyor Device 6 Belt Conveyor 12 Face 14 Slip 22 Upper Revolving Body 24 Excavator 25 Boom 26 Arm 33 Chain Conveyor 34 Crusher 35 Swiveling Conveyor 52 Relay Conveyor

Claims (1)

[Claims] 1. In tunnel excavation work, the shearing of the cutting face generated by blasting is supplied to a mobile crusher by a swivel excavator loader, crushed to a predetermined particle size by the mobile crusher, and then transferred to a belt conveyor to outside the tunnel. A method for transporting shears, characterized in that it is carried out to