JP2007278022A - Air duct device and ventilator in tunnel gallery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilator suppressing the degradation of the durability of a carrier truck and a loaded article on the truck and effectively ventilating the inside of a tunnel gallery. <P>SOLUTION: A suction duct 16b sucking air from an opening directed toward a tunnel excavating section by a suction fan incorporated to the inside and a wet type dust collector 11 removing dust in air sent in from the suction duct 16b and discharging cleaned air are loaded on a bed 1a for the carrier truck 1. An air-supply duct 40 sucking cleaned air discharged from an exhaust port 30a for the wet type dust collector 11 by driving a ventilating fan incorporated to the inside and injecting cleaned air toward an excavating section for the tunnel gallery A is further loaded on the bed 1a for the carrier truck 1. An expansible bellows-shaped air duct 70 is connected to a suction port for the suction duct 16b. The air duct 70 is adjusted so that an end opening on the excavating-section side is brought near to the excavating section as the excavation of the tunnel gallery A progresses, air in the periphery of the excavating section is sucked into the air duct 70 and ventilation work is conducted in a state that the carrier truck 1 is stopped at a place separated from an excavating position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wind tube device and a ventilation device in a tunnel mine using the wind tube device.

  In general, in the tunnel excavation method by the Natom method, the rock mass is crushed by blasting dynamite, so that dust floats in the mine and the working environment is extremely bad. In order to improve the working environment, an air supply fan and an exhaust fan are installed in the tunnel mine, and outside air is sent into the mine by driving the air supply fan, and air in the mine is driven by driving the exhaust fan. Conventionally, a ventilation method for sending out the mine has been adopted.

  By the way, in the conventional ventilation method using an air supply fan and an exhaust fan, if each fan is fixed, the tunnel tunnel cannot be well ventilated. When a fan and an exhaust fan are installed and excavation proceeds, the position of each large heavy fan is shifted to the excavation part side, and at the same time, a wind tube having a diameter of about 1500 mm is added to each fan. Therefore, there is an inconvenience that it takes much time to change the installation position.

  In order to eliminate such inconvenience, the applicant of the present application disclosed in Patent Document 1 can ventilate the tunnel tunnel very effectively, and can easily change the position in the tunnel tunnel. A ventilation system has already been proposed.

  In the tunnel mine ventilator, a wet dust collector, a suction duct, and an air supply duct are mounted on the loading platform of a transport carriage movable in the tunnel mine, and the tunnel mine is driven by a suction fan incorporated in the suction duct. Air is sucked into the suction duct from the suction port that opens toward the excavation part of the gas and is sent into the wet dust collector, where dust in the air is removed and the clean air is discharged from the exhaust port. .

In addition, clean air exhausted from the exhaust port of the wet dust collector is sucked into the air supply duct by driving a ventilation fan incorporated in the air supply duct, and the clean air is directed from the exhaust port to the tunnel excavation part. To ventilate the tunnel tunnel.
Japanese Patent No. 3546199

  By the way, in the ventilation device in the tunnel described in Patent Document 1, when the transport carriage is stopped at a position away from the excavation part of the tunnel during ventilation in the tunnel mine, the distance between the excavation part and the suction port of the suction duct In order to reduce the ventilation efficiency because dust that floats around the excavation part cannot be efficiently sucked into the duct, and the ventilation efficiency decreases, the transport carriage is located close to the tunnel excavation position. It is necessary to carry out ventilation work by stopping the carriage.

  At this time, due to the collision of flying objects such as stones scattered from the excavation position, there is a high possibility that the loaded objects such as the suction carriage and the air supply duct mounted on the carriage and the cargo bed will be damaged and the durability will be lowered. In order to suppress the deterioration of the durability, the current situation is that the conveyance carriage is stopped at a position away from the excavation position to perform the ventilation work. For this reason, the air around the excavation part where a large amount of dust soars cannot be effectively taken into the suction duct, and there are points to be improved in improving the ventilation efficiency.

  It is a first object of the present invention to provide a wind tube device capable of effectively sucking out and removing dirty air around the excavation part in the tunnel mine or guiding clean air to the excavation part periphery. It is an issue.

  In addition, the present invention provides a tunnel mine ventilation device capable of extremely effectively ventilating the tunnel mine in a state in which the deterioration of durability of the carriage and the load mounted on the cargo bed is suppressed. This is a second problem.

  In order to solve the first problem, in the first aspect of the invention, the length direction of the tunnel mine is detachably attached to a support provided at an interval in the length direction of the tunnel mine being excavated. And a plurality of runners provided so as to be movable along the rails, and a reinforcing ring suspended and supported by the runner on the outer periphery of the flexible wind pipe, and mounted at substantially constant intervals. Adopted a configuration consisting of a bellows-like expandable / contractible wind conduit and a runner moving device that is supported by the rail and moves the runner at a position close to the excavation part of the tunnel mine along the rail to extend the wind conduit. It is.

  In the wind pipe device having the above structure, when the runner moving device is driven along the rail to move the runner at a position close to the excavation part of the tunnel mine, the wind pipe expands, and the tunnel excavation side of the wind pipe It is possible to adjust the position of the end opening in the direction close to the tunnel excavation part.

  For this reason, by applying a suction force to the end opening of the wind duct on the tunnel wellhead side, dirty air around the excavation part can be effectively sucked out and the end of the wind duct on the tunnel wellhead side By sending air into the opening, the air can be effectively sent around the excavation part.

  Here, the rail laying position can be easily changed by making the rail detachable with a permanent magnet.

  As the runner moving device, a head pulley that is rotatably supported at one end of the tunnel excavation side of the rail, a tail pulley that is supported by the other end of the rail and is driven to rotate by a driving device, and spanning between the pulleys. It is possible to employ an endless traveling member partially connected to a runner at a position close to the excavation part of the tunnel mine.

  Further, in order to solve the second problem, in the second invention, an opening is made toward the tunnel excavation position on the loading platform of the transport carriage movable in the tunnel mine by driving a suction fan incorporated therein. A suction duct that sucks air from the suction port, a dust collector that removes dust in the air that is sent from the suction duct, and discharges purified air from the exhaust port, and a ventilation fan that is built inside In a ventilation device in a tunnel mine equipped with an air supply duct that sucks clean air discharged from the exhaust port of the wet dust collector by driving and injects it toward the excavation part of the tunnel mine, at the suction port of the suction duct The structure which connected the edge part by the side of the tunnel wellhead of the wind pipe in the wind pipe apparatus which concerns on the said 1st invention was employ | adopted.

  In the tunnel mine ventilation apparatus having the above-described configuration, suction force is applied to the suction port at one end of the wind conduit that opens toward the excavation position by driving the suction fan, and the suction is sucked into the wind conduit from the suction port. Air is sucked into the wet dust collector from the duct to remove dust in the air, and clean air is sent from the air duct to the tunnel digging position to ventilate the tunnel mine.

  As tunnel tunnel excavation progresses, the runner is moved by driving the runner moving device to extend the wind conduit, and the inlet of the tunnel excavation side end of the wind conduit is brought close to the tunnel excavation portion, Aspirate the air.

  When the wind conduit is extended to the maximum, move the transport carriage toward the tunnel excavation part, shrink the wind conduit, remove the rail from the support, and then transport the rail to the excavation part side. Attach to the support work near the excavation part and continue the ventilation work in the tunnel mine.

  As described above, in the first invention, since the suction port at one end can be adjusted to a position close to the excavation part of the tunnel mine by the extension of the wind duct, the suction force is applied to the end opening on the tunnel mine side. It is possible to effectively suck and remove the dirty air around the excavation part, and to send the air to the periphery of the excavation part by sending air to the end opening of the wind duct on the tunnel wellhead side. It can be sent in effectively.

  In the second aspect of the invention, since the inlet of the tunnel excavation side end of the wind duct can be adjusted with respect to the tunnel excavation part, the transport carriage is stopped at a location away from the excavation part of the tunnel mine. Ventilation work can be performed in a state, and the tunnel mine can be very effectively ventilated in a state in which a decrease in durability of the carriage and the load mounted on the loading platform is suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the ventilation device in the tunnel mine includes an air purification device X and a wind pipe device Y that guides the contaminated air around the excavation part of the tunnel mine to the air purification device X.

  The air purification apparatus X has a transport carriage 1 that can move in the tunnel mine A. The transport cart 1 is composed of a large truck, and the transport cart 1 is carried into the tunnel mine A with the loading platform 1a first, and a wet dust collector 11 is mounted on the loading platform 1a.

  As shown in FIGS. 2 to 4, the wet dust collector 11 has a rectangular water storage tank 12, and the inside of the water storage tank 12 is partitioned into a cleaning chamber 14 and an exhaust chamber 15 by attaching a filter 13.

  Two suction ducts 16 a and 16 b are provided in the upper part of the water reservoir 12. The suction ducts 16a and 16b are arranged in parallel so that the suction port 17 at the end faces the excavation part of the tunnel mine A. Each of the suction ducts 16a and 16b has a suction fan 18, a motor 19 for driving the suction fan 18, and a motor 19 for driving the suction fan 18. Is incorporated. The suction ducts 16 a and 16 b suck air from the suction port 17 by the rotation of the suction fan 18 and send the air into the water storage tank 12.

  In the cleaning chamber 14, a water spray pipe 20 is provided on the water storage surface in the water storage tank 12. The water spray pipe 20 includes a straight main pipe 20a and a plurality of branch pipes 20b provided at intervals on both sides of the main pipe 20a. Pressure water is supplied to the main pipe 20a and the branch pipe 20b. Are provided with a plurality of nozzles 21 that inject the gas upward.

  In the cleaning chamber 14, a cleaning pipe 22 that jets pressure water toward the entire surface of the filter 13 is provided. The cleaning pipe 22 and the water spray pipe 20 are connected to a discharge port of a pump 23 provided outside the water storage tank 12. The pump 23 sucks the water stored in the water storage tank 12 and sends it to the water spray pipe 20 and the cleaning pipe 22.

  A water supply pipe 24 is connected to the water storage tank 12, and an automatic water tap 25 including a ball tap and an electromagnetic valve 26 are attached to the water supply pipe 24. The automatic water tap 25 is opened when the water level in the water storage tank 12 drops and supplies water into the water tank 12, and is closed when the water level reaches a certain level to stop water supply. .

  A drainage pipe 27 is connected to the lower part of the water storage tank 12, and a drainage pump 28 is connected to the drainage pipe 27.

  Two exhaust cylinders 29 and 30 are connected to the upper part of the peripheral wall of the exhaust chamber 15 provided in the water storage tank 12. The exhaust cylinders 29 and 30 are L-shaped, and the exhaust ports 29a and 30a at the ends are opposite to the suction ports 17 of the suction ducts 16a and 16b.

  An air supply duct 40 is provided on the upper side of the suction duct 16b. The air supply duct 40 has a straight tubular shape and is arranged in parallel with the suction duct 16b. An end opening on the tunnel well side of the air supply duct 40 is a suction port 40 a, and the suction port 40 a is located almost directly above the exhaust port 30 a of the exhaust tube 30. Inside the air supply duct 40, a ventilation fan 41 and a fan driving motor 42 are incorporated.

  The air supply duct 40 sucks clean air discharged from the exhaust port 30a of the exhaust pipe 30 in the wet dust collector 11 by the rotation of the ventilation fan 41, and moves toward the excavation position of the tunnel mine A from the other exhaust port 40b. It is supposed to be discharged.

  As shown in FIG. 1, the inner periphery of the tunnel mine A is reinforced by support works B arranged every few meters. This support B is sequentially arranged as the tunnel A is excavated.

  As shown in FIG. 1, the wind pipe device Y is suspended and supported by a rail 50, a plurality of runners 60 provided so as to be movable along the rail 50, and a suspension member 61. The retractable wind conduit 70 and a runner moving device 80 for moving the runner 60 to extend the wind conduit 70 are included.

  As shown in FIG. 6, the rail 50 has a U-shaped cross section, and a flange 50b is provided inwardly on the lower edge of the opposing side plate 50a. The runner 60 has rollers 62 supported on the flange 50b of the rail 50 on both sides, and is movable by the rolling of the rollers 62. A rod-like suspension member 61 is provided at the lower end portion located below the rail 50. Is connected.

  The rail 50 is attached to the support B by a permanent magnet 51 shown in FIG. 5 and is used as a support extending in the length direction of the tunnel mine A. The rail 50 may be detachably attached to the support B via a clamp fitting.

  As shown in FIGS. 2, 5, and 6, the wind conduit 70 includes a wind pipe 71 made of a non-breathable flexible material, and a plurality of wind pipes 71 provided at intervals in the outer peripheral length direction of the wind pipe 71. Each reinforcing ring 72 is provided with a suspending portion 73, and the wind conduit 70 is suspended and supported by connection of the lower end of the suspending member 61 to the suspending portion 73.

  The wind pipe 70 is deformed into a bellows shape in the contracted state. One end of the wind pipe 71 of the wind conduit 70 is connected to each of the suction ports 17 of the suction ducts 16a and 16b, and the opening 71a at the other end faces the excavation part of the tunnel mine A. Note that one suction duct may be provided, and a wind conduit may be connected to the suction duct.

  As shown in FIG. 1, the runner moving device 80 includes a head pulley 81 that is rotatably supported at one end portion of the rail 50 on the tunnel excavation side, and a drive device 82 that is rotatably supported by the other end portion of the rail 50. The tail pulley 83 and an endless traveling member 84 that is stretched between the pulleys 81 and 83.

  Here, the traveling member 84 may be a wire or a belt. A part of the traveling member 84 is connected to the runner 60 at a position close to the excavation part of the tunnel mine A, and the traveling member 84 moves in the direction indicated by the arrow in FIG. So that the wind conduit 70 extends.

  The ventilation device in the tunnel shown in the embodiment has the above-described structure. When the inside of the tunnel mine A is ventilated, the transport carriage 1 is stopped at a position away from the excavation position of the tunnel mine, and the wind conduit 70 is installed. Try to shrink. In this state, the suction fan 18 in the suction ducts 16a and 16b and the ventilation fan 41 in the air supply duct 40 are rotated and the pump 23 is driven.

  By driving the pump 23, the water stored in the water storage tank 12 is pumped to the water spray pipe 20 and the cleaning pipe 22, and the water pumped to the water spray pipe 20 is jetted upward from the plurality of nozzles 21. On the other hand, the water pumped to the cleaning pipe 22 is jetted toward the filter 13, and the filter 13 is always washed with the jet water.

  Further, suction force acts on the opening 71a at the other end facing the excavation part of the wind conduit 70 by the rotation of the suction fan 18, and the air in the tunnel mine A is sucked into the suction duct 16b from the wind conduit 70 by the suction force. And sent into the cleaning chamber 14. At this time, since the pressure water is jetted upward from the nozzle 21 of the water spray pipe 20 in the cleaning chamber 14, the air fed into the cleaning chamber 14 comes into contact with the jet water from the nozzle 21, and the contact causes the air to enter the air. Dust floating on the surface is separated and removed.

  Since the air in the tunnel mine A is continuously sent into the cleaning chamber 14, the pressure in the cleaning chamber 14 becomes high, and the air in the cleaning chamber 14 flows into the exhaust chamber 15 through the filter 13. To do.

  At this time, dust contained in the air is secondarily collected by the filter 13. For this reason, only very clean air flows into the exhaust chamber 15, and the clean air is exhausted from the exhaust pipe 29 into the tunnel mine A and flows toward the tunnel pit of the tunnel mine A.

  On the other hand, clean air sent from the exhaust chamber 15 into the exhaust cylinder 30 is sucked into the air supply duct 40 by the rotation of the ventilation fan 41 in the air supply duct 40, and from the exhaust port 40 a of the air supply duct 40. It is discharged toward the tunnel excavation part.

  Thus, the dust floating in the air in the tunnel mine A is sent into the wet dust collector 11 through the wind conduit 70 and the suction ducts 16a and 16b, collected, and discharged from the exhaust port 30a of the wet dust collector 11. Since the clean air is sucked into the air supply duct 40 and discharged toward the excavation part, the inside of the tunnel mine A is very effectively ventilated. Moreover, since the clean air discharged | emitted from the exhaust pipe 29 is discharged | emitted toward the wellhead of the tunnel mine A, the tunnel mine A will be ventilated over the full length.

  When the excavation of the tunnel mine A proceeds, the runner moving device 80 is driven to move the traveling member 84 in the direction of the arrow in FIG. With the movement of the traveling member 84, the runner 60 at a position close to the excavation part moves along the rail 50, the wind conduit 70 extends, and the position of the opening 71a at the other end is adjusted so as to approach the excavation part.

  As described above, when the runner moving device 80 is driven, the wind conduit 70 is extended and the position of the opening 71a at the other end is adjusted so as to be close to the excavation portion. The inside of the tunnel mine A can be ventilated very effectively.

  Further, since the ventilation work can be performed in a state where the transport carriage 1 is stopped at a location away from the excavation position of the tunnel mine A, the transport carriage 1 or the like can be caused by the collision of flying objects such as stones flying from the excavation site. The load mounted on the loading platform 1a can be prevented from being damaged, and the tunnel mine A can be ventilated in a state in which the deterioration of durability is suppressed.

  Here, when the wind conduit 70 is extended to the maximum, the wind conduit 70 is contracted by the backward movement toward the excavation portion of the transport carriage 1, and after the rail 50 is removed from the support B, the rail 50 is It is transported to the excavation part side and attached to the support work B close to the excavation part, and the ventilation work in the tunnel mine is continued.

  At this time, since the rail 50 is attracted and supported by the permanent magnet 51, the rail 50 can be easily attached and detached from the support work B, and the laying position of the rail 50 can be easily changed.

  In the embodiment, fresh air is sent to the excavation part by the air supply duct 40, but the air around the excavation part is sucked by the air supply duct 40, and the air is supplied to the wellhead side of the tunnel mine. You may make it send.

  Further, the wind duct 70 is connected to the suction duct 16b to suck the air around the excavation part. However, the air purified around the excavation part by connecting the wind duct 70 to the air supply duct 40. Can be sent in effectively.

  Here, two air supply ducts 40 are provided, one of the air supply ducts 40 supplies clean air to the excavation part, and the other air supply duct 40 uses the air in the tunnel mine A to the wellhead of the tunnel mine A. You may make it send in.

  Further, the wind pipe device Y may be used separately from the air purification device X. In the single use, the air duct 70 is laid from the wellhead to the excavation part, and a blower is connected to the end opening on the wellhead side so that air can be fed into the excavation part. By connecting a blower to the part and applying a suction force, the air around the excavation part can be removed by suction.

Longitudinal side view showing an embodiment of a ventilator according to the present invention 1 is a longitudinal front view showing a wet dust collector and an air supply duct of the ventilation device shown in FIG. Partially cutaway plan view of FIG. Cross-sectional plan view of the wet dust collector shown in FIG. Front view showing the position of the wind pipe device A longitudinal front view of FIG.

Explanation of symbols

A Tunnel mine B Supporting work 1 Transport cart 1a Cargo bed 11 Wet dust collector 16a Suction duct 16b Suction duct 17 Suction port 18 Suction fan 29a Exhaust port 30a Exhaust port 40 Air supply duct 41 Ventilation fan 50 Rail 51 Permanent magnet 60 Runner 70 Wind conduit 71 Wind pipe 72 Reinforcing ring 80 Runner moving device 81 Head pulley 82 Drive device 83 Tail pulley 84 Traveling member

Claims (4)

  A rail that is detachably attached to a support provided at intervals in the length direction of the tunnel mine being excavated and extends in the length direction of the tunnel mine, and a plurality of movably provided along the rail A runner, a bellows-like stretchable wind conduit having a reinforcing ring suspended and supported by the runner on the outer periphery of a flexible wind tube, and a tunnel tunnel supported by the rail. A wind tube device comprising a runner moving device that moves a runner at a position close to the excavation section along the rail to extend the wind conduit.   The wind pipe device according to claim 1, wherein the rail is detachable by a permanent magnet.   The runner moving device includes a head pulley that is rotatably supported at one end portion of the rail on the tunnel excavation side, a tail pulley that is supported by the other end portion of the rail and is driven to rotate by a driving device, and spans between the pulleys. The wind pipe device according to claim 1 or 2, further comprising an endless traveling member partially connected to a runner at a position close to a drilling site of the tunnel mine. A suction duct that sucks air from a suction port that opens toward the tunnel excavation position by driving a suction fan built in the transport carriage that can move in the tunnel mine, and is sent from the suction duct The wet dust collector that removes dust in the air and exhausts the purified air from the exhaust port, and the ventilation fan built in the interior drives the air to suck the clean air exhausted from the exhaust port of the wet dust collector. In the ventilation device in the tunnel mine equipped with an air supply duct that injects toward the excavation part of the tunnel mine,
A ventilation device in a tunnel mine, wherein an end of the wind duct in the wind pipe device according to any one of claims 1 to 3 is connected to a suction port of the suction duct.

Images