JPH05287999A - Equipment and materials transportation method in underground excavation work - Google Patents

Abstract

PURPOSE:To make it possible to carry materials and equipment with high efficiency even when the open cut width of an underground pile is narrow or when the subsoil of an excavated portion is weak. CONSTITUTION:When forming a long underground pile T in the horizontal direction by excavating a subsoil G from a ground A, a brace 11 is vertically moved by an opening section 1 all over the space between a space U in the underground pipe T and the ground G by means of a grab lifter 3 or the like. Then, the brace 11, which is kept under a suspended state in the space U, is transferred along the longitudinal direction of the underground pipe T between the opening section and the upper part of a work site in the underground pile T. The brace 11 is vertically moved over a space between the upper part of the work site and the work site by using a motor-driven hoist.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transporting materials and equipment in underground excavation work such as subway works.

[0002]

2. Description of the Related Art Conventionally, underground excavation work such as subway work is performed stepwise to a predetermined excavation depth by repeating horizontal excavation work. Moreover, when excavating the soft ground where the N value of the ground in the construction area is about 0 to 5, a ceiling slab is constructed by a reverse winding method at a predetermined depth position from the ground surface, and the bottom of the ceiling slab is gradually stepped. While excavating, the beams are erected in layers between the retaining walls to reinforce the retaining walls.

By the way, when the excavation site is a place where traffic is heavy day and night, the installation location of the opening is limited. In this case, therefore, the excavated soil is transported from the excavation site to the opening, and It is necessary to transport excavated soil and materials by transporting materials and equipment from the opening to the excavation site or from the excavation site to the opening. Therefore, conventionally, the island construction method was used to excavate from one opening to the adjacent opening with a small backhoe, and the excavated soil was collected using an earth collecting machine such as a bulldozer, a belt conveyor, or a crawler excavator. It was transported to just below. In addition, when transporting materials such as beams and the like, hoist between the ground and the opening with a crane or the like and hang it down, and use a machine such as a transport machine or manpower between the opening and the excavation site in the underground mine. I was going.

[0004]

However, in the transportation method of materials and equipment using a transportation machine, for example, when the excavation width of underground excavation is narrow, it is difficult to secure the traveling path of the machine and the island construction method cannot be adopted. ..

Further, when the ground at the excavated portion is soft, it is necessary to shorten the vertical interval between the cut beams arranged in layers, and the depth of the overdug for installing the cut beams is increased. Since it is not possible to make it too deep, the size and work range of the machine for transporting materials and equipment will be restricted by the existing beams and the operation of the machine will be troublesome and the operator will be burdened. There was a problem of increasing it. Furthermore, when the excavation site moves away from the opening, many machines are required to transport materials and equipment while relaying them, which requires a lot of manpower and damage to the beams due to machine operation mistakes. However, there is a problem in that it may not be possible to efficiently carry out the work of transporting the materials and equipment.

The present invention has been made in view of the above circumstances, and is capable of efficiently transporting materials and equipment even when the excavation width of the underground pit is narrow or the ground of the excavated portion is soft. It is to provide a method of transporting equipment.

[0007]

[Means for Solving the Problems] To achieve the above object, the present invention provides a method for excavating the ground from the ground to form a horizontally long underground pit, which is used for loading and unloading equipment at the ground and underground pits. The step of moving the materials and equipment up and down to and from the upper space, and with the materials and equipment suspended in the upper space in the underground mine, between the loading and unloading point of the materials and equipment and the work site in the underground mine, The method is characterized by including a step of moving the material and equipment along the longitudinal direction of the underground pit, and a step of moving the material and equipment up and down between the work location and the work location.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of an underground pit for underground excavation work according to an embodiment of the material and material transportation method of the present invention, and FIG. 2 is a front sectional view of an underground pit for underground excavation work shown in FIG. In FIG. 1, reference numeral 1 denotes openings formed at predetermined intervals along the line of the underground mine T that is formed long underground in the horizontal direction and has a depth from the ground A to the current excavation level L2 (in FIG. 1). In the figure, only one is shown), and an excavated soil chute 2 is provided at the bottom of the opening 1, and a grab lifter 3 and the like that can move up and down along the opening 1 are provided. In the present embodiment, the opening 1 corresponds to the material carrying-in / carrying-out place.

Further, in FIGS. 1 and 2, reference numeral 4 indicates the above-ground A according to the excavation width (10 m in this embodiment) of the underground pit T.
To the final excavation level L1 is a mountain retaining wall provided in the ground G, and the crossbeam 5 and the ceiling are provided in the upper portion between the mountain retaining walls 4 and 4 excavated from the ground A to a predetermined depth. The slab 6 is installed. On the lower surface 6a of the ceiling slab 6, two rails 7, 8 are provided along the longitudinal direction of the underground mine T.
Are provided in parallel. Further, in FIG. 1 and FIG. 2, reference numeral 9 denotes a grab bucket provided so as to be movable along the rail 7, and a winch device 91 movably attached to the rail 7 and lifted and lowered by the winch device 91. Bucket 92. On the other hand, 10 in the figure
Is an electric hoist movably provided along the rail 8, a trolley device 101 movably attached to the rail 8, a turning device 102 supported by the trolley device 101, and the turning device. The suspension arm 103 is held by the device 102 so that it can be swung and moved up and down.

In addition, reference numeral 11 in FIGS. 1 and 2 denotes a crossbeam as a material. In this embodiment, a steel material having a total length of 5 m is used as the cross beam 11, and considering that the ground G is a soft ground having an N value of 0 to 5, for example, 2 m in the longitudinal direction of the underground mine T.
It is installed between the mountain retaining walls 4, 4 at intervals of, for example, 2.6 m above and below, and is installed along the longitudinal direction of the underground mine T at an intermediate position of the width of the underground mine T. In the embodiment, three stages are installed in the depth direction. Further, in the figure, reference numeral 12 excavates the ground G from one opening portion 1 to an adjacent opening portion (not shown) below the lowermost girder 11 and collects the excavated soil D that has been excavated. It is a small backhoe to do.

Next, the transfer operation of the cutting beam 11 by the method of transferring materials and equipment according to this embodiment will be described. First, the ground G between the adjacent openings 1 is excavated from the ground A by any means to carry in the small backhoe 12, and the girder 5 and the ceiling slab 6 are installed, and the excavated part of the ground A excluding the opening 1 is cut. Is temporarily repaired with an iron plate B or the like. Then, using the small backhoe 12, while excavating the ground G at a depth of, for example, 2.6 m from one opening 1 to the adjacent opening (not shown), the excavated soil D is excavated by the rail. The soil is collected at a position directly below 7 at a predetermined interval, and the excavated soil D thus collected is carried to the ground A by the grab bucket 9 and the grab lifter 3.

To explain this in detail, the winch device 91
Moves along the rail 7 above the soil collection location, where
The winch device 91 lowers the bucket 92 while avoiding the existing beam 11. The lowered bucket 92 is opened and closed to grasp the excavated soil D collected, and the winch device 91 is there.
Winds the bucket 92 to the ceiling slab 6
And to the space U between the uppermost beam 11 and move the bucket 92 to the opening 1 along the rail 7 again.
The bucket 92 is opened at a position above the opening 1 and the excavated soil D inside is discharged to the excavated soil chute 2. The excavated soil D discharged to the excavated soil chute 2 is carried out to the ground A through the opening 1 by the grab relifter 3 or the like, loaded on a dump truck or the like, and transferred to a predetermined disposal site.

On the other hand, a new cutting beam 11 is installed between the mountain retaining walls 4 and 4 of the ground G portion excavated under the existing cutting beam 11. The newly installed cross beam 11 is carried into the underground mine T from the ground A through the opening 1 and mounted on the suspension arm 103 of the electric hoist 10.
01 is a space U between the top beam 11 and the ceiling slab 6
By moving the rails along the rails 8, the cut beams 11 that have been carried in are transported from the opening 1 to above the installation location. At the time of transporting the cutting beam 11, the turning device 102 turns the hanging arm 103 so that the longitudinal direction of the cutting beam 11 mounted on the hanging arm 103 is along the longitudinal direction of the underground pit T, and the cutting beam 11 moves. When it reaches above the erected portion, the turning device 102 turns the suspension arm 103 by 90 °, and in this state, the suspension arm 103 is lowered to lower the beam 11 to the erected portion. The down beam 11 is erected by any means.

After that, until the ground G is excavated to the final excavation level L1, the excavation of the ground G and the erection of the beams 11 are repeated to obtain a desired underground pit T.

As described above, in the material / material conveying method according to the present embodiment, the material / material such as the cross beam 11 loaded into the underground mine T through the opening 1 is carried in the space U in the longitudinal direction of the underground mine T. Therefore, even when the excavation width of the underground mine T is narrow or when the ground G in the excavated portion is soft, the ground G and the existing beams 11 are used.
It is possible to efficiently transport new materials and materials such as the cross beam 11 in the underground mine T without being disturbed by. Further, in the transportation method of materials and materials of the present embodiment, when a new cutting beam 11 is transferred, the cutting beam 11 is transferred with the longitudinal direction of the cutting beam 11 being along the longitudinal direction of the underground pit T. It is possible to avoid the interference with the grab bucket 9 that conveys the excavated soil D and to stably convey the cutting beam 11 during the conveyance, while the cutting beam 11 is lowered when the cutting beam 11 descends. Since the cutting beam 11 is conveyed with the longitudinal direction of the crossing direction orthogonal to the longitudinal direction of the underground pit T, the cutting beam 11 to be lowered can be prevented from contacting the existing cutting beam 11.

In this embodiment, the lower surface 6a of the ceiling slab 6 is used.
Although the electric hoist 10 is moved along the rail 8 provided on the ground, the rail 8 is attached to the arm protruding from the mountain retaining walls 4 and 4 so that the electric hoist 10 is moved along the longitudinal direction of the underground mine T. Alternatively, the rail 8 may be arranged in the space U and the electric hoist 10 may be moved along the rail. Further, although the underground pit T is formed to be long in the horizontal direction in the present embodiment, the present invention can be similarly applied to an underground pit inclined in the vertical direction. Further, in the present embodiment, the case where the cutting beam 11 is carried in from the ground A to the work place in the underground mine T has been shown, but the thing to be carried in the underground mine T is not limited to the cutting beam 11 and other materials and equipment. May be
Further, when the materials and equipment are carried out from the work place in the underground mine T to the ground A, the efficient transportation can be achieved by performing the above steps in the reverse order.

The method of transporting materials and materials according to the present invention is not limited to the underground pit excavation work described above, and can be applied to, for example, a construction work for excavating a site to a predetermined depth. Needless to say, the conveying means is not limited to the apparatus shown in this embodiment and can be arbitrarily set.

[0018]

As described above, according to the present invention, at the time of excavating the ground from the ground to form a horizontally long underground pit, at the material loading / unloading point, the ground and the upper space in the underground pit are connected. In the process of moving the equipment up and down over a period of time, and with the equipment suspended in the upper space of the underground mine, the equipment is underground between the loading / unloading point of the equipment and the working point in the underground pit. Since it has a process of moving along the longitudinal direction of the mine and a process of moving the equipment up and down between the work site and the work site, when the excavation width of the underground mine is narrow or excavation is performed. Even if the ground of a part is soft, the materials and materials can be efficiently transported.

[Brief description of drawings]

FIG. 1 is a side sectional view of an underground mine used for underground excavation work according to an embodiment of the method for transporting materials and materials according to the present invention.

FIG. 2 is a front sectional view of an underground mine used for the underground excavation work shown in FIG.

[Explanation of symbols]

 1 Opening (material loading / unloading point) 11 Girder (material / material) T Underground pit U space (upper space)

Claims (1)

[Claims] 1. When excavating the ground from the ground to form a horizontally long underground pit, at the material loading / unloading point, the material is moved up and down between the ground and the upper space in the underground pit. A step of moving the materials and equipment along the longitudinal direction of the underground mine between the loading and unloading point of the materials and equipment and the upper part of the working place in the underground mine, with the materials and equipment suspended in the upper space of the underground mine. And a step of moving the equipment up and down between the work location and the work location, and a method of transporting the equipment in underground excavation work.