JP4641641B2 - Dust discharging device and dust discharging method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dust discharge device and a soundproofing method and a dust discharge method using the dust discharge device. More specifically, the present invention reduces noise generated when excavating the inside of an excavation mine and discharges dust to the outside of the excavation mine. The present invention relates to a dust discharge device, a soundproofing method using the dust discharge device, and a dust discharge method.
[0002]
[Prior art]
Conventionally, in blasting using explosives and excavation using an excavator, a sound barrier for reducing noise generated during excavation, a device for removing dust, and a device for removing shear such as excavated earth and sand and rock fragments Is used. Noise generated during excavation is reduced by using a soundproof wall installed in the excavation pit or in the pit. The soundproof wall is provided so as to close the opening portion of the excavation mine, and blocks or absorbs sound from the inside. The sound barrier is also used to prevent danger caused by earth and sand or rock fragments scattered by the above-described blasting as well as soundproofing.
[0003]
In addition, dust such as sand dust generated during excavation and dust generated during primary lining by spraying concrete onto the excavated surface are sucked in by using a ventilation fan. It is discharged outside the excavation pit.
[0004]
When excavation is performed with the above-described soundproof wall and ventilation fan installed, it is necessary to move the soundproof wall and ventilation fan as the excavation proceeds, and labor and time are required for the movement. When soundproofing or dust removal is performed without moving these, noise can be sufficiently reduced by installing a soundproof wall, but in order to expand the inside of the excavation mine by excavation, install a large or multiple ventilation fans There was a need to do. Also, secondary lining such as invert excavation could not be performed in parallel with the excavation and primary lining. For this reason, it took time to complete the secondary lining after excavation.
[0005]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-mentioned problems, and by integrating the soundproof wall and the ventilation means and providing wheels, noise can be reduced, dust can be removed, and movement can be easily performed. It is an object of the present invention to provide a dust discharge device capable of performing secondary lining in parallel with excavation and primary lining, and a sound insulation method and a dust discharge method using the dust discharge device.
[0006]
[Means for Solving the Problems]
The above object of the present invention is achieved by using the dust discharge device of the present invention, a soundproofing method using the dust discharge device, and a dust discharge method.
[0007]
That is, according to the present invention , a partition wall for closing an excavation mine, a first support base provided continuously to the partition wall , two side plates provided continuously to the partition wall and the first support base, A soundproof door provided to open and close a passage formed by the first support base and the two side plates, and a plurality of soundproof doors provided at circumferential ends of the partition wall so as to be adjacent to the circumferential direction of the excavation mine. And a ventilating means for discharging dust in the excavation mine projecting from and closed on the partition wall, and provided at a position lower than the first support base in succession to the partition wall and the one side plate. A fan that blows air into the excavation mine to collect dust in the excavation mine upward, and is placed on the first support pedestal, Excavating the dust collected in the upper direction Dust discharge device and a ventilation means including a fan for discharging to the outside is provided.
[0008]
According to the present invention , there is provided a dust discharge device, wherein an end of the partition wall can slidably support the plurality of closing plates.
[0009]
According to the present invention , there is provided the dust discharge device, wherein the closing plate is a rubber plate.
[0010]
According to the present invention , the soundproof door is provided with a dust discharge device including a sound absorbing material therein.
[0011]
According to the present invention, there is provided the dust discharge device , wherein the dust discharge device is provided with wheels so as to be further movable .
[0012]
According to the present invention, there is provided a method for discharging dust generated when excavating an excavation mine, wherein the excavation pit includes a partition provided in a dust discharge device, a first support base provided continuously to the partition, Two side plates provided continuously to the bulkhead and the first support base, a soundproof door provided to open and close a passage formed by the first support base and the two side plates, and the excavation mine A plurality of closing plates provided at circumferential ends of the partition wall so as to be adjacent to each other in the circumferential direction; and a step protruding from the partition wall and continuous with the partition wall and the one side plate. A step of collecting dust in an upper direction in the excavation mine by a fan that is placed on a second support pedestal provided at a position lower than the first support pedestal and blows air into the excavation mine; Projecting on the partition wall and the first support The fan is placed on the table, and a step of discharging the dust which the are dust collecting to the upper direction of the drilling underground to the wellbore outside dust discharge method using a dust discharge device is provided.
[0013]
According to the present invention , there is provided a dust discharging method using a dust discharging device in which the closing plate is a rubber plate .
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing a dust discharge device of the present invention installed in an excavation mine. The excavation mine 1 shown in FIG. 1 is formed by blasting using explosives or excavating using an excavator that requires a rotating cutter at the tip. The excavation surface 3 in the circumferential direction of the excavation mine 1 shown in FIG. 1 has an arch shape, and concrete spraying is performed as a primary lining so that the excavation surface 3 does not collapse due to earth pressure or the like. The dust discharge device 2 shown in FIG. 1 is installed at a predetermined position of the excavation pit 1 after concrete spraying. In FIG. 1, the excavation mine 1 is excavated in the direction of the arrow line A, and is divided into an excavation part 4 and an excavation part 5 by installing a dust discharge device 2. In the excavation part 4, excavation is performed using the above-described blasting or excavator, and in the wellhead part 5, secondary lining such as invert excavation and concrete placement is performed in parallel.
[0022]
The dust discharge device 2 shown in FIG. 1 is provided with a partition wall 6 so that dust such as sand dust generated at the time of excavation or concrete spraying as a primary lining does not move to the wellhead portion 5 where the secondary lining is performed. ing. Further, the dust discharge device 2 is provided with a closing plate 8 at the circumferential end 7 of the partition wall 6 so as to be adjacent to the excavation surface 3 of the excavation mine 1, and dust is discharged from the gap between the partition wall 6 and the excavation surface 3. Not to be. The excavation unit 4 shown in FIG. 1 collects dust by being closed by a partition wall 6 and a closing plate 8, and is discharged to the outside of the excavation mine 1 using a fan 9 as a ventilation means protruding from the partition wall 6. It has become. The dust discharging apparatus 2 shown in FIG. 1 is provided with a support base 10 for installing the fan 9 a, and the support base 10 is joined to a predetermined position of the partition wall 6. The support table 10 is provided with a side plate 11 that supports the support table 10 and is joined to the partition wall 6. In the embodiment shown in FIG. 1, the support base 10 and the side plate 11 are arranged so as to form a passage having a width and a height at which a vehicle can pass. The excavation part 4 side of the formed passage is an opening, and a soundproof door 12 is provided on the wellhead part 5 side. Further, another support table 13 is provided on the side plate 11 of the support table 10. On the support table 13, a fan 9 b and a control panel 14 for controlling the air volume of the fan 9 b and the like are installed. Further, a support base (not shown) is provided on the opposite side plate 11 (not shown), and a control board for controlling a ladder for ascending to the support base 10 and an air volume of the fan 9a is installed.
[0023]
In the embodiment shown in FIG. 1, a steel plate is used for the partition wall 6 so that a hole is not opened by rocks scattered during excavation. Moreover, this steel plate can be reinforced by making it double as needed. Furthermore, the soundproofing effect can be enhanced by manufacturing a box with a steel plate and inserting a sound absorbing material therein. Moreover, it is preferable that the partition wall 6 used in the present invention has such a size that it can be moved to the outside of the excavation pit 1 through the wellhead portion 5 even after the secondary lining at the wellhead portion 5. Further, the closing plate 8 may be anything as long as it can fill the gap between the end portion 7 of the partition wall 6 and the excavation surface 3 of the excavation mine 1, but has a good sealing property, It is preferable to use an elastic material such as a rubber plate so that the excavation surface 3 subjected to primary lining such as concrete spraying does not collapse. Furthermore, the closing plate 8 can be prevented from coming into contact with the excavation surface 3 by, for example, sliding toward the partition wall 6 when the dust discharging device 2 is moved.
[0024]
In the embodiment shown in FIG. 1, two fans protrude from the partition wall 6, and the fan 9 b installed on the support base 13 is excavated by the partition wall 6 and the closing plate 8 described above. The fan 9a is used to send air into the unit 4 and collect dust upward, and the fan 9a installed on the support base 10 is used to discharge the dust collected by the fan 9a to the outside of the excavation mine 1. ing. In the present invention, a contra fan can be used as the fan 9, but any other fan can be used as long as it can ventilate the closed excavation part 4. In the present invention, the number of ventilation means is not limited to two, and the number of ventilation means can be provided as needed or at an appropriate position. Furthermore, in the present invention, the noise generated from the fans 9a and 9b can be insulated or absorbed by providing a soundproof wall for the fans 9a and 9b.
[0025]
The soundproof door 12 provided in the passage formed by the support 10 and the side plate 11 shown in FIG. 1 is provided with a sound absorbing material inside a box formed of a steel plate, and absorbs noise generated by an excavator or blasting. Have been able to. As the sound-absorbing material used in the present invention, porous materials such as glass wool, rock wool, foamed polyurethane and polyethylene can be used. Further, the soundproof door 12 is not limited to the position shown in FIG. 1, and may be provided at any position as long as it is a passage formed by the support 10 and the side plate 11, and may be a soundproof curtain. The dust discharge device 2 shown in FIG. 1 is provided with wheels 15 so as to be able to move in the excavation mine 1. In the present invention, the wheels 15 may be moved automatically by providing an electric motor such as an engine, or may be moved via a person or another vehicle. Moreover, a rail etc. may be provided in the bottom face of the excavation mine 1, and it may be made to drive | work on a rail.
[0026]
FIG. 2 is a view showing the dust discharge device 2 shown in FIG. 1 as viewed from the well opening 5 of the excavation mine 1. The dust discharge device 2 shown in FIG. 2 is provided with a partition wall 6 so that dust such as sand dust generated at the time of excavation or concrete spraying as a primary lining is not discharged toward the wellhead where the secondary lining is performed. A closing plate 8 is provided at the circumferential end 7 of the partition wall 6 so as to be adjacent to the excavation surface 3 of the excavation pit 1 shown in FIG. In addition, the dust discharge device 2 shown in FIG. 2 is provided with a support base 10 having a predetermined height for installing the fan 9 a, and the support base 10 is joined to the partition wall 6. Further, the support base 10 is supported by two side plates 11 joined to the partition wall 6, and the support base 10 and the side plates 11 are formed with a passage having a width and a height at which the vehicle can pass. It is arranged like this. Furthermore, a soundproof door 12 is attached to the side plate 11 via a hinge or the like, so that dust and noise carried through the above-described passage can be blocked.
[0027]
The soundproof door 12 shown in FIG. 2 is provided with a handle so that the door is not opened by wind pressure or the like by passing the penetrating hole. Further, another support table 13 is provided on the side plate 11 of the support table 10. On the support table 13, a fan 9 b and a control panel 14 for controlling the air volume of the fan 9 b and the like are installed. Further, another support base is provided on the opposite side plate 11, and a ladder for ascending to the support base 10, a control panel for controlling the air volume of the fan 9a, a high voltage cable, etc. can be installed. It can be done.
[0028]
In the embodiment shown in FIG. 2, the closing plate 8 provided at the end 7 of the partition wall 6 is slid and supported at a position in contact with the circumferential excavation surface so that dust is not discharged from a gap or the like. In addition, a soundproof wall is provided so as to surround the fan 9a, and noise caused by the fan 9a is also reduced. The dust discharging apparatus 2 shown in FIG. 2 is provided with a wheel 15 at the bottom of the side plate 11, and a rail is installed on the bottom surface of the excavation mine so that it can move on the rail. Further, the support base 10 is provided with a safety fence so that the support base 10 does not fall when working on the support base 10 for maintenance and inspection of the fan 9a.
[0029]
FIG. 3 is a view showing a place where the earth and sand generated by excavation are transported to the outside of the excavation pit 1 after excavation by installing the dust discharge device 2 of the present invention. In the embodiment shown in FIG. 3, the dust discharge device 2 is installed so as to close the excavation mine 1, excavates the excavation mine 1 for a predetermined section, and discharges dust or primary lining using the above-described ventilation means. After the concrete is sprayed, the soil 16 generated by excavation and the discharge of the shear 16 such as rock fragments are performed. The discharge of the shear 16 is performed by using a transport vehicle 17 such as a truck. The transport vehicle 17 can enter the excavation unit 4 that is closed by opening the soundproof door 12 of the dust discharge device 2. In the embodiment shown in FIG. 3, a transport vehicle 17 such as a truck enters the excavation unit 4 that is closed through a passage formed by the soundproof door 12, the support 10, and the side plate 11 that is opened. The transport vehicle 17 that has entered the excavation unit 4 is loaded with the shear 16 using an excavator or the like, and transports again through the passage to a predetermined location outside the excavation mine 1.
[0030]
After the shear 16 is transported by the transport vehicle 17 shown in FIG. 3, the soundproof door 12 of the dust discharge device 2 is closed and moved in the excavation direction by the wheels 15 provided in the dust discharge device 2. The dust discharging device 2 moved to a predetermined position can be fixed at a predetermined position using a stopper provided on the wheel 15. After the dust discharge device 2 is installed at a predetermined position and excavation and concrete spraying are performed again, the soundproof door 12 is opened and the shear 16 is transported by the transport vehicle 17.
[0031]
FIG. 4 is a view showing a place where the dust discharge device 2 of the present invention is installed and excavating the ground using an excavator. The dust discharge device 2 of the present invention is installed at a predetermined position in the excavation mine 1, and is divided into an excavation portion 4 and a wellhead portion 5 by a partition wall 6 of the dust discharge device 2. Further, a closing plate 8 is provided at the end 7 of the partition wall 6 so as to be adjacent to the excavation surface 3 so that dust floating in the excavation unit 4 is not discharged.
[0032]
The soundproofing method of the present invention will be described with reference to FIG. The partition 6 and the closing plate 8 shown in FIG. 4 are provided to prevent dust generated during excavation from being discharged to the wellhead 5, and can also be used as a sound insulation wall that blocks noise from the excavator 18 and the like. Further, a passage is provided in the partition wall 6 of the dust discharge device 2 shown in FIG. 4 so that the vehicle can pass therethrough, and this passage is formed by the support base 10 and the side plate 11. The support 10 and the side plate 11 are also made of the same steel plate as the partition wall 6 described above, and can be used as a sound insulation wall by being joined without a gap. Further, a soundproof door 12 attached to the side plate 11 using a hinge or the like so as to close the passage is provided, so that the excavation part 4 can be closed and the sound can be absorbed.
[0033]
By installing the dust discharge device 2 of the present invention, the noise can be reduced by blocking and absorbing the noise of the excavator 18 and the like in the wellhead part 5 partitioned by the dust discharge device 2 of the present invention. Secondary lining can be performed without worrying about sound. In the embodiment shown in FIG. 4, the closing plate 8 is provided only in the circumferential direction of the excavation mine 1. However, in the present invention, the bottom surface and the partition wall 6 of the excavation mine 1 or the bottom surface and the side plate of the excavation mine 1 are provided. By providing the closing plate 8 also between the bottom surface of the pit 11 or the excavation mine 1 and the soundproof door 12, the closing property can be further improved.
[0034]
The dust discharge method by the dust discharge apparatus 2 of this invention is demonstrated using FIG. 4 and FIG. In the embodiment shown in FIG. 4, the excavation pit 1 is excavated using the excavator 18. In FIG. 4, dust is generated together with excavated earth and sand and rock fragments. The dust shown in FIG. 4 is blown into the excavation unit 4 closed by the fan 9 b installed in the dust discharge device 2, and the floating dust is collected upward in the excavation unit 4. The collected dust is sucked into the fan 9a and discharged to the outside of the excavation pit 1. In the embodiment shown in FIG. 4, the fan 9 a is provided with a line so that discharged dust can be discharged to the outside of the excavation pit 1.
[0035]
FIG. 5 is a view showing a place where the dust discharge device 2 of the present invention is installed and concrete is sprayed on the side wall of the excavation part 4 as another embodiment. The concrete spraying shown in FIG. 5 is performed as a primary lining to prevent the wall surface excavated using the excavator shown in FIG. 5 from collapsing. The concrete spraying means 19 shown in FIG. 5 is provided with a hose for transporting concrete and a moving means for moving a position where the hose is fixed or sprayed. Attaching is done. When the concrete is sprayed as shown in FIG. 5, dust is generated due to the collision between the injected concrete and the wall surface of the excavation pit 1. The dust discharging apparatus 2 shown in FIG. 5 closes the excavation part 4 which is spraying concrete with the partition wall 6 and the closing plate 8. In FIG. 5, air is blown to the excavation unit 4 closed by the fan 9 b installed in the dust discharge device 2, and dust floating in the excavation unit 4 is collected upward. The collected dust is sucked by the fan 9a installed in the dust discharge device 2 of the present invention and discharged to the outside of the excavation pit 1. In the embodiment shown in FIG. 5, the fan 9 a is provided with a line so that discharged dust can be discharged to the outside of the excavation pit 1.
[0036]
The present invention has been described based on the embodiment shown in the drawings, but the present invention is not limited to the above-described embodiment, and it is also used when excavating by blasting without being an excavator. Can do. Moreover, if the material used for the partition used for the dust discharge apparatus 2 of this invention, a support stand, a side plate, a closing board, and a sound-absorbing material has required intensity | strength, elasticity, and a sound absorption property, it will be known until now. Anything that is available can be used. Furthermore, the partition walls, the support bases, the side plates, and the like can be made as thick as necessary.
[0037]
【The invention's effect】
Accordingly, by providing the dust discharge device of the present invention, the soundproofing method using the dust discharge device, and the dust discharge method, noise during excavation can be reduced, and air generated while blowing air and excavating dust generated during excavation. It is possible to ventilate a closed excavation mine that is discharged outside the mine. Further, the internal shear can be transported by the transport vehicle through the passage while the dust discharge device of the present invention is installed. Furthermore, the dust discharge device of the present invention is provided with wheels, so that it can be used after moving in the excavation direction again after shear transport.
[0038]
Also, by providing a dust discharge device of the present invention, a soundproofing method and a dust discharge method using the dust discharge device, it is possible to perform secondary lining in parallel with excavation, thereby shortening the process. Is also possible.
[Brief description of the drawings]
FIG. 1 is a view showing a dust discharge device according to the present invention installed in an excavation mine.
FIG. 2 is a diagram showing the dust discharge device of the present invention as viewed from the direction of the excavation shaft.
FIG. 3 is a diagram showing a dust discharge device of the present invention installed in a digging pit and carrying a shear in the digging mine.
FIG. 4 is a diagram showing a state where the dust discharge device of the present invention is installed in an excavation mine and excavated in the excavation mine.
FIG. 5 is a view showing a state where the dust discharge device of the present invention is installed in an excavation mine and concrete is sprayed onto an excavation surface in the excavation mine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Excavation pit 2 ... Dust discharge device 3 ... Excavation surface 4 ... Excavation part 5 ... Wellhead part 6 ... Bulkhead 7 ... End part 8 ... Closure plate 9, 9a, 9b ... Fan 10 ... Support base 11 ... Side plate 12 ... Soundproof door DESCRIPTION OF SYMBOLS 13 ... Support stand 14 ... Control panel 15 ... Wheel 16 ... Slip 17 ... Conveyance vehicle 18 ... Excavator 19 ... Concrete spraying means

Claims (7)

A partition for closing the excavation pit, a first support base provided continuously to the partition , the two side plates provided continuously to the partition and the first support base, the first support base and the A soundproof door provided to open and close a passage formed by two side plates ;
A plurality of closing plates provided at the circumferential end of the partition wall so as to be adjacent to the circumferential direction of the excavation pit;
Ventilation means for discharging dust in the excavation mine projecting from and closed on the partition wall, wherein the second support is provided at a position lower than the first support base in succession to the partition wall and one of the side plates. A fan mounted on the table and for blowing air into the excavation mine in order to collect the dust in the excavation mine upward; and a dust that is mounted on the first support table and collected in the upper direction And a ventilation means including a fan for discharging the generated dust to the outside of the excavation mine .   The dust discharge device according to claim 1, wherein an end of the partition wall can slidably support the plurality of closing plates.   The dust discharge device according to claim 1 or 2, wherein the closing plate is a rubber plate. The soundproof door, inside provided with a sound absorbing material, the dust discharge device according to any one of claims 1 to 3. The dust discharge device according to any one of claims 1 to 4 , wherein the dust discharge device is provided with wheels so as to be further movable. A method for discharging dust generated when excavating a pit,
A partition provided in a dust discharge device, a first support stand provided continuously to the partition, two side plates provided continuously to the partition and the first support stand, and the first support. a soundproof door provided to open and close the passage formed by the base and the two side plates, and a plurality of closing plates arranged in the end portion of the circumferential direction of the partition wall so as to be adjacent in the circumferential direction of the wellbore comprising the steps of: closing using,
The air is blown into the excavation mine, and is placed on a second support base that is provided on the partition wall and is provided at a position lower than the first support base in succession to the partition wall and one of the side plates. Collecting dust by a fan in the upper direction in the excavation mine; and
Discharging the dust collected in the upper direction in the excavation mine to the outside of the excavation mine by a fan protruding from the partition wall and placed on the first support base. Dust discharge method using discharge device. The dust discharge method using the dust discharge device according to claim 6 , wherein the closing plate is a rubber plate.

Images