JP2001248400A - Rest station in pit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rest station in which the inner side is completely shielded from the outer side, in which clean atmosphere is held, in which workers can take a rest without a dust-protective mask, and in which sufficient comfort can be obtained. SOLUTION: This rest station temporarily provided at a proper position in a tunnel pit 1 is provided in a gas tightness-held and closed temporary building, and it is provided with an open air blow port 10 connected to an open air introducing pipe 2 piped in the tunnel pit 1 for blowing open air through a branch pipe 7 into the building, an air curtain blow port 11 branched and piped frogs the open air introducing pipe 2 to blow air vertically from an upper part of a doorway of the building to isolate air between the inside and the outside of the building, a dust eliminating air gun 14 provided close to the doorway of the building, and connected to a terminal end branched and piped from a blow pipe, and an air cleaner 15 and an air conditioner 16 provided inside the building.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an underground rest area temporarily installed in a tunnel under construction.

[0002]

2. Description of the Related Art When a worker temporarily takes a break in a tunnel mine under construction, he or she moves inside the tunnel to a resting place outside the mine, or selects an appropriate place in the mine to take a break. Or, if there is a temporary rest area or break room in the mine, take a break there.

[0003]

Of the above-mentioned resting methods, outside tunnels are the most ideal because the dust concentration inside the tunnel is high and the air environment is poor. However, if the tunnel excavation has progressed to some extent and the work vehicle does not make frequent round trips, it has to rely on walking to move outside the mine, and it takes time to make a round trip between the site and the mine. In practice, it is difficult to take a break outside of the mine during working hours because it will delay the construction period.

[0004] On the other hand, the dust concentration is generally high in the tunnel as described above, and the dust mask cannot be removed even during a break, and the tunnel cannot be relaxed. No.

[0005] Incidentally, the conventional resting place or resting room is actually just a name, and in fact, it is a building in which a sitting room is prepared in a small room separated by a simple partition in a pit. Even in the rest area, the same atmosphere as the mine was exposed, and even if this place was used as a rest area, it had to stay there with the dust mask in the same manner as described above.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to completely shut off the inside from the outside world, to maintain a clean atmosphere, to take a break by removing a dust mask, and to provide sufficient comfort. This is to provide a mine resting area where the property can be obtained.

[0007]

In order to achieve the above-mentioned object, the present invention provides a method for controlling the position of a tunnel inside a tunnel through a branch pipe connected to an outside air introduction pipe extending from the outside of the tunnel to the tip of the tunnel. The outside air is blown into a building temporarily installed in an airtight state (claim 1).

[0008] In the present invention, the outside air is introduced from the outside air introduction pipe, and the outside air is blown out at the entrance and exit of the building so as to isolate the air inside and outside the building to form an air curtain (Claim 2). A configuration in which an air gun type air gun for local dust removal is provided at an end of a pipe branched from the pipe (claim 3).

Therefore, in the present invention, the inside of the building is always in the same air atmosphere as the outside air, and even when entering or exiting the building, the building is air-blocked from the outside by the air curtain.
When the worker enters the building, the dust attached to the clothes can be removed by operating the hand nozzle of the air gun to eject air to his / her body.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1
2 shows a tunnel construction site provided with a rest area according to the present invention. In the figure, a trunk air pipe 2 for introducing outside air from the outside of the tunnel to the tip of the tunnel (face 1a) is piped to the side wall inside the tunnel 1 formed by excavation toward the face 1a, not shown. Clean external air is constantly flowing in the direction of the white arrow in the figure by an air pump or the like.

A rest area 3 is temporarily installed at an appropriate position in the tunnel 1 and directly below the main air pipe 2. In addition, this resting place 3 will be relocated sequentially near the excavation site,
Alternatively, it may be sequentially added at appropriate intervals along the longitudinal direction in the tunnel 1 according to the construction progress while leaving the resting places 3.

The resting area 3 is a temporary building, in which a window 4 and a door 5 for entrance and exit are provided at the opening of the wall of a rectangular building. In addition, it is preferable to keep high airtightness by covering the openings and the like.

Three branch pipes 7, 8, and 9 branched from the main air pipe 2 via an elbow pipe 6 are vertically piped toward the rest area 3.

The distal end of the first branch pipe 7 penetrates the wall of the rest area 3 and communicates with an air outlet 10 disposed therein. Therefore, clean outside air is always supplied to the rest area 3. It is needless to say that the air outlet 10 is provided with a flow rate adjusting damper (not shown), an air flow direction adjusting louver, and the like. In addition, separately, at rest area 3,
Exhaust means for exhausting the air inside the tunnel to the inside or outside of the tunnel may be provided.

The front end of the second branch pipe 8 penetrates through the ceiling of the rest area 3, and is located above the door 5 and has a flat nozzle-shaped air curtain outlet 11 opening along the upper edge of the entrance. Have been. Therefore, when the door 5 is opened and the doorway is opened, the air curtain blows out from the outlet 11 to shut off the inside and outside of the rest area 3 in an air manner so that the inside can be kept clean every time the door 5 is opened and closed. I have to. In addition,
The air curtain may be blown out constantly, but the air curtain may be blown out only when the door 5 is opened. Further, an air curtain in which air flows laterally from the side of the door 5 toward the other side may be used.

In any case, the indoor pressure in the rest area 3 is slightly higher than the pressure in the tunnel due to the blown outside air, so that the underground air does not flow and is kept in a clean state.

The lower end of the third branch pipe 9 is connected to a horizontal pipe 12 arranged outside the building, and communicates with a plurality of air guns 14 hanging below the horizontal pipe 12. Each air gun 1
Reference numeral 4 denotes an air nozzle 14b of a trigger valve type connected to a distal end of a flexible hose 14a hanging down on a horizontal pipe. The worker A has the air nozzle 14b, and when the trigger valve is operated, pressurized air is blown out. The dust adhering to the clothes of A can be removed by blowing it off, and by entering the rest area 3 after the dust removal work, the cleanliness in the rest area can be kept higher. .

If there is room in the building of the rest area 3, the entrance and exit are made to have a double-door system, and after the dust removal operation by the air gun 14 is performed inside the entrance, it is possible to enter the room. Is also good.

Further, inside the building of the resting place 3, a stool bench, other fittings (not shown) necessary for a break, a helmet hanging, etc. are provided. As shown in FIG. 2, a wall-mounted panel-type air cleaner 15 is arranged, and on the other surface, a wall-mounted panel-type indoor unit 16 of an air conditioner is arranged and connected to an outdoor unit 17 arranged outside the building.

The air purifier 15 not only removes dust due to unexpected inflow of downhole air, but also prevents air contamination due to smoking in the building and improves comfort such as deodorization due to generation of negative ions. The air conditioner keeps the room at a comfortable temperature when the site temperature is abnormally high or conversely cold.

Therefore, the worker A who has entered the rest area can take a helmet, a dust mask, dust-proof glasses and the like, take a rest while sitting on a bench or the like, and take a break such as smoking. .

[0022]

As is apparent from the above description, according to the underground rest area according to the present invention, the inside is completely shut off from the outside world, a clean atmosphere is maintained, and the dust mask can be removed to take a break. Comfort can be obtained.

[Brief description of the drawings]

FIG. 1 is an external explanatory view of a tunnel construction site provided with an underground rest area according to the present invention.

FIG. 2 is an explanatory diagram showing an indoor configuration of the underground rest area.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel pit 2 Main air pipe for outside air introduction 3 Rest area 5 Door 7, 8, 9 Branch pipe 10 Blow port 11 Air curtain outlet 14 Air gun 15 Air purifier 16, 17 Air conditioner (16 indoor unit, 17 outdoor unit)

Claims (3)

[Claims] 1. An outside air is blown into a building temporarily installed in an airtight state at an appropriate position in the tunnel through a branch pipe connected to an outside air introduction pipe extending from the outside of the tunnel to the tip of the tunnel from the outside of the tunnel. Underground rest area characterized by. 2. The underground mine according to claim 1, wherein the air curtain is formed by branching out from the outside air introduction pipe and blowing out outside air at an entrance and exit of the building so as to isolate air inside and outside the building. Rest area. 3. The underground resting place according to claim 1, wherein an air gun of a local dust removing air gun is provided at an end of a pipe branched from the blower pipe.