JPH0547838Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an in-tunnel bulkhead device that is installed in a mine during tunnel construction and partitions a contaminated area on the face side and a working area on the mine mouth side.

(Conventional technology) Conventional ventilation in tunnel construction involves sending fresh air directly from the tunnel entrance to the face using a blower, or using a blower to suck in contaminated air from the face and exhaust it outside the tunnel. He had been hired.

(Problem to be solved by the invention) However, in the conventional ventilation method, air is blown to the face using a blower and the tunnel itself is used as an exhaust duct, so it is impossible to avoid dust dispersion throughout the tunnel. There were problems with work stability, maintenance of machinery and equipment, and especially worker health management.

The present invention was proposed in view of the problems of the prior art, and its purpose is to:
An object of the present invention is to provide a tunnel partition wall device that can suppress the spread of dust during tunnel construction, improve ventilation efficiency, ensure work stability, and improve the work environment.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the tunnel bulkhead device according to the present invention is installed by being crimped to the tunnel inner wall between the face-side contaminated area and the subsequent working area in the tunnel. a movable bulkhead made of an air bladder, a curtain for opening and closing an entrance of the movable bulkhead, a vehicle detection sensor disposed close to the bulkhead in the contaminated area and the work area, respectively, and an air supply device for the bulkhead. and a traveling carriage equipped with the curtain opening/closing device that operates in response to a signal from the sensor.

(Function) Since the present invention is constructed as described above,
Between the contaminated area and the work area in the tunnel, air is sealed in an air bag constituting a bulkhead device from a traveling truck via an air supply device, and the air bag is crimped to the inner wall of the tunnel. A curtain opening/closing device closes the curtain at the entrance/exit of the partition wall, thereby airtightly dividing the contaminated area and the working area in the tunnel to suppress the spread of contaminated air.

When a construction vehicle enters or exits through the bulkhead, a vehicle detection sensor installed in the contaminated area and work area near the bulkhead sends a detection signal to the curtain opening/closing device of the work truck, and The curtain at the entrance/exit of the bulkhead is thus opened and held in the open position until the vehicle has passed through the bulkhead.

As the tunnel construction progresses, the air filled in the air sac constituting the bulkhead is evacuated,
The bulkhead will be removed and moved to the next location.

(Example) The present invention will be described below with reference to the illustrated embodiments.

A is a tunnel, a is a contaminated area in contact with the face side in the tunnel, and b is a working area on the mine entrance side following the contaminated area.

B is a movable partition and has a peripheral frame 1 made of an air sac body,
A hanging curtain 2 for opening and closing is attached to the entrance/exit B'.

In the figure, 3 is an opening/closing cable for the curtain 2, 4 is a pulley, and 5 is a safety passage.

Air is sealed in the peripheral frame 1 as described below,
It is crimped to the inner wall surface of tunnel A and is configured to stand on its own.

At this time, a seal 6 such as a sponge is interposed between the peripheral frame 1 and the tunnel inner wall, so that the partition wall B is airtightly disposed within the tunnel A.

In the figure, 7 is an eye bolt for the lifting rope 8, and 9 is a hardware for attaching the eye bolt. Further, 2' is a fixed curtain.

The partition wall B is provided in the contaminated area a and the working area b, respectively.
Vehicle detection sensors C and D are installed in close proximity to
Furthermore, a movable dust collector E is installed in the contaminated area a.

Furthermore, on the upper end side of the movable bulkhead B, the contaminated area a communicates with the working area b and extends from the face to the mine mouth;
In addition, a ventilation duct H located above the tunnel
is installed, and the duct H is the same as the "conventional technology" mentioned above.
As described in the section above, it is constructed to send fresh air from the wellhead to the face. The dust collector E is provided with an exhaust duct F on the upper end side of the movable partition wall B that penetrates from the contaminated area a to the work area b and discharges the air after the dust collection process by the dust collector E.

In this way, the face side contaminated area a
A ventilation duct H is arranged across the work area b on the mine entrance side, and a dust collector E equipped with an exhaust duct F that penetrates into the work area b on the upper end side of the partition B from the contaminated area a is arranged. This, combined with the sealing effect of the partition B of the contaminated area a, allows air purified by the dust collector E to be discharged into the work area b, dramatically improving ventilation efficiency.

Reference numeral G denotes a running truck, and is equipped with a blower 10 as an air supply device for the peripheral frame 1 of the partition wall B, and a winch 11 for winding and unwinding the opening/closing cable 3 as the curtain opening/closing device. It operates in response to vehicle sensing signals from sensing sensors C and D, opens the curtain 2, and is configured to hold the curtain 2 in the open position for a certain period of time by a timer (not shown).

Since the illustrated embodiment is configured as described above, the traveling trolley G is moved to a predetermined position, and the bulkhead B
At the same time, air is sealed in the surrounding frame 1, the entrance/exit B' is closed by the curtain 2, and the contaminated area a and the working area b are separated by the partition wall B.

At this time, the exhaust duct F of the dust collector and the ventilation duct H are connected between the peripheral frame 1 and the tunnel inner wall surface on each of the upper end sides of the movable bulkhead B.
is penetrated, and the seal 12 is filled in the gap.

When the construction vehicle M enters the contaminated area a from the work area b, the vehicle detection sensor D disposed in the work area b senses this and sends a signal to the winch 11 on the traveling trolley G. The curtain 2 is rolled up to open the entrance/exit B', and the vehicle M
passes through partition wall B and enters contaminated area a. At this time, the curtain 2 is automatically closed after a certain period of time by a timer installed on the traveling trolley G, but if the construction vehicle M cannot pass within the time, the curtain 2 is automatically closed by the sensor 13 installed on the traveling trolley G. The curtain 2 can be held in the open position until it has passed.

Conversely, when the construction vehicle M enters the work area b from the contaminated area a, the vehicle detection sensor C installed in the contaminated area a and the sensor 13 mounted on the traveling trolley G
Accordingly, the curtain 2 at the entrance/exit B' of the partition wall B is automatically opened/closed, thus minimizing the leakage of contaminated air due to the entry/exit of the construction vehicle M.

In addition, as the tunnel construction progresses, the above-mentioned bulkhead B
The air in the surrounding frame 1 is discharged, the partition wall B is folded, and the partition wall B is mounted on a traveling truck and moved to the next required position, and then reassembled at the same position.

(Effects of the invention) According to the invention, as described above, a movable partition made of an air bag is provided between the contaminated area and the working area in the tunnel, and air is sealed in the air bag. Therefore, by closely contacting the inner wall surface of the tunnel and providing an opening/closing curtain at the entrance/exit of the partition wall, the contaminated area and the work area can be airtightly partitioned.

Further, a vehicle detection sensor is provided in the contaminated area and the work area in close proximity to the bulkhead, respectively, and the leakage of contaminated air is minimized when the vehicle in front passes through the bulkhead, which is activated by receiving a signal from the sensor on the traveling bogie. can be suppressed to

In this way, according to the present invention, the contaminated area on the face side and the subsequent work area are isolated, the leakage of contaminated air from the contaminated area into the work area is minimized, and the spread of dust on the face side is suppressed. This makes it possible to ensure work safety, improve the work environment, and maintain machinery and equipment.

The partition wall is composed of an air sac, and the air supply device and curtain opening/closing device for the air sac are mounted on the traveling truck, so that the movable partition wall can be easily relocated. .

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional side view of an embodiment of the present invention showing the working situation inside a tunnel equipped with a movable partition wall in the tunnel, Fig. 2 is a cross-sectional plan view thereof, Fig. 3, Fig. 4, and Fig. 5. are side views of the bulkhead portion, respectively.
, a plan view, and a longitudinal front view. A...Tunnel, B...Movable bulkhead, B'...Entrance/exit, C, D...Vehicle detection sensor, E...Dust collector, F...Dust collector exhaust duct, G...Traveling trolley, H...Ventilation duct, 1... peripheral frame of movable bulkhead, 2... curtain, 10... blower, 11...
Winch, a... Contaminated area, b... Working area.

Claims (1)

[Scope of utility model registration request] A movable bulkhead made of an air bag that is crimped to the inner wall of the tunnel between the contaminated area on the face side and the subsequent working area in the tunnel, a curtain for opening and closing the entrance/exit of the movable bulkhead, and the contaminated area and the working area. The vehicle is characterized by comprising a vehicle detection sensor disposed close to the bulkhead, respectively, a traveling trolley equipped with an air supply device for the bulkhead, and the curtain opening/closing device operated in response to a signal from the sensor. Tunnel bulkhead device.