JP2013104212A - Power generation method for tunnel under construction and power generation system for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power generation method for a tunnel under construction and a power generation system for the same capable of saving power consumption of equipment in the tunnel under construction.SOLUTION: When an air blower 24 is activated, air containing dust near a working face 18 is sucked through a suction port 2202 and exhausted from an exhaust port 2204 to an outside of a portal 16 through a ventilation pipe 22. A fan 2602 of a power generation unit 26 is rotationally driven by an air flow exhausted from the portal 16 to allow a generator 2604 to generate power. The generated power is stored in a battery 34 through a cable 38, a distribution board 32 and a cable 40. The power stored in the battery 34 is supplied to respective lighting devices 36 from the distribution board 32 through a cable 42 and thereby activating the lighting devices 36 to illuminate an inside of a tunnel 14.

Description

  The present invention relates to a power generation method for a tunnel under construction and a power generation system for the tunnel under construction.

In the tunnel under construction, it is necessary to exhaust the dirty air containing dust generated near the face to the outside of the tunnel.
Therefore, conventionally, a ventilation system has been used in which an exhaust wind pipe extending along the tunnel tunnel from the vicinity of the face to the outside of the tunnel is provided and the air near the face is exhausted to the outside of the tunnel through the exhaust wind pipe using a blower. (See Patent Document 1).
Moreover, in the tunnel under construction, various facilities for consuming electric power such as a lighting device are provided in order to perform work in the tunnel.

JP 2008-101329 A

By the way, the equipment such as the blower and the lighting device of these ventilation systems consumes a large amount of power as the size of the tunnel increases, so how can the power consumption be reduced from the viewpoint of energy saving in recent years and suppression of CO ₂ emissions? It is important to suppress it.
On the other hand, paying attention to the air circulating in the ventilation system described above, the energy of the air flow is not used at all, and it is considered that the energy of the air flow is effectively reused.
The present invention has been made in view of such circumstances, and its purpose is to reduce the power consumption of equipment in the tunnel under construction by generating power using the air flow accompanying ventilation in the tunnel under construction. An object is to provide a power generation method for a tunnel under construction and a power generation system for a tunnel under construction that can be achieved.

In order to achieve the above object, the tunnel power generation method according to the present invention performs power generation by rotating the fan by the flow of the exhaust when exhausting the air in the vicinity of the face of the tunnel to the outside of the tunnel entrance. It is characterized by that.
In addition, the wind power generation system for the tunnel under construction of the present invention includes an exhaust wind pipe extending from the vicinity of the face along the tunnel tunnel to the outer side of the tunnel, and air near the face through the exhaust wind pipe to the outside of the tunnel. And a power generator including a fan that is rotationally driven by the air flowing through the exhaust air pipe and a generator that generates power by the rotation of the fan.

  According to the present invention, conventionally, there is no use of equipment in the tunnel under construction by effectively reusing the energy of the air flow accompanying ventilation in the tunnel under construction, which has never been used. Electricity can be achieved.

It is explanatory drawing which shows the structure of the electric power generation system 20 of the tunnel under construction of 1st Embodiment. It is explanatory drawing which shows the structure of the power generation system 20 of the tunnel under construction of 2nd Embodiment. It is explanatory drawing which shows the structure of the electric power generation system 20 of the tunnel under construction of 3rd Embodiment. It is explanatory drawing which shows the structure of the electric power generation system 20 of the tunnel under construction of 4th Embodiment. (A) is a side view which shows the structure of the connection part 48, (B) is a B arrow view of (A). It is explanatory drawing which shows the structure of the electric power generation system 20 of the tunnel under construction of 5th Embodiment. It is explanatory drawing which shows the structure of the power generation system 20 of the tunnel under construction of 6th Embodiment. It is explanatory drawing which shows the structure of the electric power generation system 20 of the tunnel under construction of 7th Embodiment.

(First embodiment)
Next, a power generation system for the tunnel under construction and a power generation method for the tunnel under construction according to the embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the tunnel 12 is constructed by excavating the natural ground 10 in the horizontal direction.
The mine shaft 14 of the tunnel 12 faces the field through a cofferdam 16, and the front end of the mine shaft 14 is a face 18.
The power generation system 20 of the tunnel under construction includes an exhaust wind pipe 22, a blower 24, and a power generation device 26.

The exhaust wind pipe 22 is provided so as to extend from the vicinity of the face 18 along the mine shaft 14 to the outside of the counter opening 16.
The exhaust air pipe 22 has an intake port 2202 located in the vicinity of the face 18 and an exhaust port 2204 located outside the counter opening 16.
The inner diameter of the exhaust air pipe 22 is, for example, about 1500 mm, is made of various conventionally known materials such as synthetic resin, and is attached to the ceiling of the tunnel 14 via an attachment member (not shown).

The blower 24 exhausts the air in the vicinity of the face 18 to the outside of the tunnel 14 through the exhaust wind pipe 22.
In the present embodiment, the blower 24 is incorporated in the exhaust wind pipe 22 near the intake port 2202, and the blower 24 includes a motor and a fan that is rotationally driven by the motor.
The electric power for driving the motor is supplied from, for example, a power receiving facility provided outside the tunnel.
The position where the blower 24 is provided is not limited. For example, the blower 24 may be provided at an intermediate position of the exhaust wind pipe 22 or may be provided immediately before the intake port 2202.

The power generation device 26 includes a fan 2602 and a generator 2604.
The fan 2602 is rotationally driven by the air flowing through the exhaust wind pipe 22.
The generator 2604 is connected to the fan 2602 via a rotating shaft, and generates power by the rotation of the fan 2602. The power generation amount of the generator 2604 is 600 KW, for example.
As such a power generation device 26, various power generation devices 26 such as a horizontal axis wind turbine type used in conventionally known wind power generation can be used.
In the present embodiment, as shown in FIG. 1, the generator 2604 is supported by the support arm 30 attached to the support column 28 provided in the counter opening 16. 2602 is provided at a position that is rotationally driven by the air discharged from the exhaust port 2204. More specifically, the rotation center of the fan 2602 and the center of the exhaust port 2204 are provided so as to match or substantially match.

Inside the mine shaft 14, a control panel 32, a battery 34, and a plurality of lighting devices 36 are provided.
The control panel 32 is connected to the generator 2604, the battery 34, and the plurality of lighting devices 36 via cables 38, 40, and 42, and supplies power supplied from the generator 2604 to the battery 34. The power of 34 is distributed to the lighting device 36.
In addition, when the battery 34 is fully charged, the control panel 32 has a function to stop the power generation operation by applying a control signal to the generator 2604 so that the battery 34 is not overcharged. It is illustrated.
The battery 34 is for charging the electric power generated by the generator 2604.
The illuminating device 36 irradiates illumination light into the tunnel 14 with electric power supplied from the battery 34 via the control panel 32 and the cable 38. In the present embodiment, a light emitting diode (LED) is used. For example, power consumption is 40W.
The illuminating device 36 may be one other than a light emitting diode, but using a light emitting diode is advantageous in achieving power saving.

Next, the effect of the power generation system 20 will be described.
When the blower 24 is operated, air containing dust and the like near the face 18 is sucked from the suction port 2202 and is exhausted from the exhaust port 2204 to the outside of the resistance port 2204 through the exhaust wind pipe 22.
The fan 2602 of the power generation device 26 is rotationally driven by the flow of air exhausted from the counter opening 2204, whereby the generator 2604 generates electric power.
The generated power is charged to the battery 24 via the cable 38, the switchboard 32, and the cable 40. The electric power stored in the battery 24 is supplied from the switchboard 32 to each lighting device 36 via the cable 42, and thereby the lighting device 36 operates to illuminate the inside of the tunnel 14.
The generated power can be used as power for various facilities related to the construction of the tunnel 12 in addition to the lighting device 36.
As described above, according to the present embodiment, when the air in the vicinity of the face 18 of the tunnel 12 is exhausted to the outside of the tunnel 16 of the tunnel 12, the fan 2602 is rotationally driven by the exhaust flow to generate power. I made it.
Therefore, power saving of equipment in the tunnel 16 under construction is achieved by effectively reusing the energy of the air flow accompanying ventilation in the tunnel 16 under construction, which has never been used. Can be achieved.

(Second Embodiment)
Next, a second embodiment will be described.
As shown in FIG. 2, the second embodiment is different from the first embodiment in that the power generation device 26 is provided at a location inside the exhaust wind pipe 22, and other than that, the first embodiment. It is the same.
In the following embodiments, the same parts and members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simply performed.
In the second embodiment, the power generation device 26 is provided at a location inside the exhaust wind pipe 22 near the exhaust port 2204.
In this case, the generator 2604 is supported inside the exhaust wind pipe 22 via the support member 44.
Therefore, the air flowing inside the exhaust wind pipe 22 surely flows toward the fan 2602 without detaching from the fan 2602, and the fan 2602 is rotationally driven by this air flow, and power is generated by the generator 2604.
According to the second embodiment, the same effect as the first embodiment can be obtained, and the fan 2602 can be driven to rotate without wasting the air flow. This is more advantageous for efficiently converting the energy of the air flow into electric power.

(Third embodiment)
Next, a third embodiment will be described.
The third embodiment is a modification of the second embodiment, in which the power generation device 26 is provided inside the exhaust wind pipe 22 and at an intermediate position in the extending direction of the exhaust wind pipe 22. This is different from the second embodiment.
In the third embodiment, the same effect as that of the second embodiment can be obtained.

(Fourth embodiment)
Next, a fourth embodiment will be described.
As shown in FIG. 4, the exhaust wind pipe 22 has a plurality of tube bodies 46 and a plurality of connection portions 48 that connect the tube bodies 46 to each other.
As shown in FIGS. 5A and 5B, the connection portion 48 is formed in a cylindrical shape having the same cross-sectional shape as that of the tube body 46 by, for example, synthetic resin, and has the same or substantially the same inner diameter as the tube body 46 have.
In the present embodiment, connecting portion 48 and tube body 46 are detachably connected using a hook-and-loop fastener. As a structure for connecting the connection portion 48 and the tube body 46, various conventionally known connection structures such as a structure in which the connection portion 48 and the tube body 46 are fitted can be used in addition to using a hook-and-loop fastener.
The power generation devices 26 are respectively provided in the plurality of connection portions 48.
As shown in FIGS. 5A and 5B, the power generation device 26 is attached to the connection portion 48 by connecting the generator 2604 and the connection portion 48 by a plurality of connection members 50.
As described above, the power generation devices 26 are provided in the plurality of connections 48, whereby a plurality of power generation devices 26 are arranged at intervals along the exhaust wind pipe 22.
In the present embodiment, as shown in FIG. 4, a control panel 32, a battery 34, and a plurality of lighting devices 36 are provided for each power generation device 26.

According to the fourth embodiment, it is a matter of course that the same effect as that of the second embodiment is achieved, and since the power generation device 26 is provided in the connection portion 48 that connects the tube body 46, There is no need to prepare a dedicated support member, which is advantageous in easily installing the power generation device 26 at low cost.
Further, since the power generator 26 can be added simultaneously with the operation of extending the exhaust wind pipe 22 by connecting the pipe body 46 to the pipe body 46 via the connection portion 48, the work man-hour can be reduced. It will be advantageous.
Further, since the amount of power generation can be increased by adding the power generation device 26 as the mine shaft 14 extends, it is possible to accurately cope with the increase in equipment installed in the mine shaft 14.
In addition, since a group of a group including the control panel 32, the battery 34, the plurality of lighting devices 36, and the cables 38, 40, 42 is configured for each power generation device 26, a failure occurs in one group. However, since it does not affect other groups, it is advantageous in distributing the risk at the time of failure occurrence.

(Fifth embodiment)
Next, a fifth embodiment will be described.
In the above-described first to fourth embodiments, the case where the facility for supplying the power generated by the power generation device 26 is the lighting device 36 has been described.
As shown in FIG. 6, the fifth embodiment is a modification of the first embodiment, in which the power generated by the power generation device 26 is supplied to the lighting device 36 and the blower 24. .
That is, the electric power stored in the battery 34 is supplied from the control panel 32 to the lighting device 36 via the cable 42 and is also supplied from the control panel 32 to the motor of the blower 24 via the cable 52.
As described above, the blower 24 operates with the power supplied from the power receiving facility (not shown). When the power generated by the power generation device 26 is supplied in this manner, the blower 24 is supplied from the power receiving facility by that amount. The power supplied to is reduced.
According to the fifth embodiment, the effect of the first embodiment can be obtained, and the power supplied from the power receiving equipment to the blower 24 can be saved, thereby saving power. be able to.

(Sixth embodiment)
Next, a sixth embodiment will be described.
As shown in FIG. 7, the sixth embodiment is a modification of the first embodiment, and the power generated by the power generation device 26 is supplied to the lighting device 36 and various facilities used for the construction of the tunnel 12. It is what you do.
That is, the electric power stored in the battery 34 is supplied from the control panel 32 to the lighting device 36 via the cable 42 and is also supplied from the control panel 32 to various facilities via the cable 54.
Examples of the various facilities include an underground power tool 56 (cutting tool, welding tool, etc.), an underground drainage pump 58, and the like.
Originally, the electric power tool 56 and the underground drainage pump 58 operate with electric power supplied from a power receiving facility (not shown) as described above, but when electric power generated by the power generation device 26 is supplied in this way, Accordingly, the power supplied from the power receiving equipment to the equipment is reduced.
According to the sixth embodiment, the effects of the first embodiment can be achieved, and the power supplied from the power receiving facility to various facilities can be saved, thereby saving power. be able to.

(Seventh embodiment)
Next, a seventh embodiment will be described.
As shown in FIG. 8, the seventh embodiment is a modification of the first embodiment, in which the fan 2602 of the power generator 26 is discharged from the exhaust port 2204 of the exhaust wind pipe 22, One of the outside air flowing outside the tunnel is selected and driven to rotate.
That is, the power generator 26 is rotated at the first position P1 where the fan 2602 is rotationally driven by the air exhausted from the exhaust port 2204, and at the second position where the fan 2602 is rotationally driven by the outside air flowing outside the tunnel 14. A power generator moving mechanism 60 is provided for moving to and from P2.
The power generator moving mechanism 60 is provided between the support arm 30 and the generator 2604.
The power generation device moving mechanism 60 includes, for example, a slide member that has a feed screw extending in the vertical direction, a motor that rotates the feed screw forward and backward, and a female screw that is screwed to the feed screw and is coupled to the generator 2604. And so on.
The power generator moving mechanism 60 moves the power generator 26 between the first position P1 and the second position P2 by rotating the motor forward and backward.
During construction of the tunnel 12, since the blower 24 is operating, the power generation device is moved to the first position P <b> 1 using the power generation device moving mechanism 60 and is exhausted from the exhaust port 2204 of the exhaust wind pipe 22. Electric power is generated by the power generation device 26 using air.
During the period when the construction of the tunnel 12 is stopped (holidays, etc.), the blower 24 is stopped, so that the power generation device is positioned at the second position P2 using the power generation device moving mechanism 60 and is outside the tunnel. The power generation device 26 generates power using outside air flowing through
According to the seventh embodiment, it is natural that the same effect as that of the first embodiment can be obtained. Even when the blower 24 is at rest, the energy of the outdoor air flow is reduced. Since power generation can be performed by utilizing the power, the power saving of the facility can be achieved while maintaining the power supply to the facility even when the blower 24 is stopped.

  10 ... Ground mountain, 12 ... Tunnel, 14 ... Tunnel, 16 ... Proof, 18 ... Face, 20 ... Power generation system of tunnel under construction, 22 ... Exhaust wind pipe, 2202 ... Inlet, 2204 ... Exhaust port, 26 ... Power generation device, 2602 ... Fan, 2604 ... Generator, 36 ... Lighting device, 46 ... Tube, 48 ... Connection, 56 ... Power tool, 58 underground drainage Pump, 60 ... Movement mechanism for power generator.

Claims (10)

When exhausting the air near the tunnel face to the outside of the tunnel entrance,
The fan is rotated by the exhaust flow to generate power,
A power generation method for a tunnel under construction characterized by this. Supplying power generated by the flow of exhaust to the equipment in the tunnel;
The power generation method for a tunnel under construction according to claim 1. An exhaust wind pipe extending from the vicinity of the face to the outside of the entrance along the tunnel tunnel,
A blower that exhausts the air in the vicinity of the face to the outside of the tunnel through the exhaust wind pipe,
A power generator having a fan that is rotationally driven by the air flowing through the exhaust wind pipe and a generator that generates electric power by the rotation of the fan;
A wind power generation system for a tunnel under construction, characterized by comprising: The exhaust wind pipe has an intake port located in the vicinity of the face and an exhaust port located outside the anti-opening,
The power generator is provided at a position where the fan is rotationally driven by the air discharged from the exhaust port.
The wind power generation system for a tunnel under construction according to claim 3. The power generator is provided at a location inside the exhaust wind pipe,
The wind power generation system for a tunnel under construction according to claim 3. The exhaust wind pipe has a plurality of pipes and a plurality of connecting portions that connect the pipes,
The power generation devices are respectively provided in the plurality of connection portions, and a plurality of the power generation devices are arranged at intervals along the exhaust wind pipe.
The wind power generation system for a tunnel under construction according to claim 3. The exhaust wind pipe has an intake port located in the vicinity of the face and an exhaust port located outside the anti-opening,
Between the first position where the fan is rotationally driven by the air exhausted from the exhaust port and the second position where the fan is rotationally driven by outside air flowing outside the tunnel. A moving mechanism for the power generator to be moved at is provided,
The wind power generation system for a tunnel under construction according to claim 3. The electric power generated by the generator is supplied to equipment provided in the tunnel.
The wind power generation system for a tunnel under construction according to any one of claims 3 to 7. A battery for charging power generated by the generator;
The supply of power to the facility is performed via the battery.
The wind power generation system for a tunnel under construction according to claim 8. The facility is a lighting device provided in the tunnel.
The wind power generation system for a tunnel under construction according to claim 8 or 9, wherein

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