Ventilation cooling device for underground long-distance single-head tunneling

Abstract

The utility model discloses an underground long-distance one-headed tunneling ventilation cooling device, which relates to the technical field of iron ore mining, and comprises a roadway, and an air chamber is arranged on the side wall corresponding to a tunneling channel; the sealing plate is fixedly connected to the opening end of the air chamber; the gauze is arranged in the air inlet; the first local fan is arranged in the air distribution chamber; the second local fan is arranged in the filtering chamber; one end of the air supply pipe is in butt joint with the ground air supply fan, and the other end penetrates through the sealing plate and extends into the air distribution chamber; one end of the first air outlet pipe penetrates through the sealing plate and is connected with the first local fan, and the other end extends into the tunneling channel; one end of the second air outlet pipe penetrates through the sealing plate and is connected with the second local fan, and the other end extends into the roadway and points to an outlet of the roadway; the connecting pipes are communicated with the adjacent air distribution chambers; the device has the advantages of being convenient to use, improving the dust filtering effect in the tunneling process and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of iron ore mining, in particular to an underground long-distance single-headed tunneling ventilation and cooling device. Background Art

[0002] During the mining process, the underground rock strata contain different air components, including some toxic gases and low oxygen content, so ventilation is required during the excavation process. In the prior art, the excavation chamber is ventilated mainly by passing external air through a blower and a ventilation pipe;

[0003] For example, patent application number CN202121286311.0 discloses a relay ventilation and cooling system for deep and long-distance dead-end tunnel excavation. The patent uses a first local fan to introduce fresh airflow into the wind reservoir, and then uses the wind reservoir as a relay transfer station for fresh airflow. The fresh airflow is introduced into the dead-end tunneling working face through the local fan of the wind reservoir, thereby utilizing the relay ventilation of the wind reservoir to ensure the continuous supply of fresh airflow, and at the same time utilizing a cooling device disposed in the wind reservoir to further reduce the temperature in the tunnel, so as to meet the air supply and cooling requirements of deep and long-distance dead-end tunnel excavation;

[0004] During use, this patent in the prior art mainly supplies air to the inside of the mine through pipes to adjust the oxygen content, temperature, etc. in the mine. However, a large amount of dust will be generated during the excavation process. The prior art mainly uses filtering dust removal (bag dust removal), water spray dust removal, closed dust removal (isolation method), and electrostatic dust removal to reduce dust. However, the effects of these dust reduction methods are limited, and a large amount of dust will still flow into the tunnel. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an underground long-distance single-headed excavation ventilation and cooling device to solve the problem that dust partially pouring into the tunnel is difficult to remove in the prior art described in the background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a ventilation and cooling device for underground long-distance single-headed tunneling, comprising:

[0007] In the tunnel, an air chamber is opened at the side wall corresponding to the position of the excavation channel;

[0008] The sealing plate is T-shaped and fixedly connected to the open end of the air chamber. The sealing plate separates the air chamber into an air separation chamber and a filter chamber. The sealing plate has an air inlet at a position corresponding to the filter chamber.

[0009] Gauze, arranged in the air inlet;

[0010] The first fan is arranged in the air distribution chamber;

[0011] The second fan is arranged in the filter room;

[0012] The air supply pipe has one end connected to the well air supply fan and the other end passing through the sealing plate and extending into the air distribution chamber;

[0013] A first air outlet pipe, one end of which passes through the sealing plate and is connected to the first local fan, and the other end of which extends into the excavation channel;

[0014] A second air outlet pipe, one end of which penetrates the sealing plate and is connected to the second local fan, and the other end of which extends into the tunnel and points to the exit of the tunnel;

[0015] The connecting pipe is connected to the adjacent gas distribution chambers.

[0016] Preferably, a plurality of butt joints are provided in the tunneling channel and distributed along the tunneling channel, and the butt joints at the ends of the butt joints are butt jointed with the first air outlet pipe.

[0017] Preferably: the air supply fan is installed in an air supply chamber, and a filter screen is provided on a side wall of the air supply chamber.

[0018] Preferably: a cooling fan is provided in the air supply chamber.

[0019] Preferably: the air supply pipe, the connecting pipe and the butt pipe are fixed on the wall by means of clamps.

[0020] The beneficial effects of adopting the above technical solution are:

[0021] The second fan in the filter chamber can draw the air entering the alley into the filter chamber, and the gauze can filter the dust in the air, so that the air discharged from the second air outlet pipe is cleaner and the filtering effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a cross-sectional view of a ventilation and cooling device for underground long-distance single-head excavation.

[0023] Figure 2 It is a schematic diagram of some components of the utility model.

[0024] Figure 3 It is a schematic diagram of the sealing plate of the utility model.

[0025] Among them: tunnel 10, excavation channel 20, air distribution chamber 30, sealing plate 31, sealing door 32, air supply pipe 40, connecting pipe 41, clamp 42, air supply fan 43, air supply chamber 50, filter 51, air cooler 52, first air outlet pipe 60, first local fan 61, docking pipe 62, filter chamber 70, air inlet 71, gauze 72, second local fan 73, second air outlet pipe 74. DETAILED DESCRIPTION

[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-3 In the first embodiment, a ventilation and cooling device for long-distance underground single-headed tunneling includes:

[0028] The side wall of the tunnel 10 is provided with an air chamber at a position corresponding to the excavation passage 20;

[0029] The sealing plate 31 is T-shaped and fixedly connected to the open end of the air chamber. The sealing plate 31 separates the air chamber into an air separation chamber 30 and a filter chamber 70. The sealing plate 31 has an air inlet 71 at a position corresponding to the filter chamber 70.

[0030] Gauze 72, arranged in the air inlet 71;

[0031] The first local fan 61 is disposed in the air distribution chamber 30;

[0032] The second local fan 61 is disposed in the filter chamber 70;

[0033] The air supply pipe 40 has one end connected to the well air supply fan 43 and the other end passing through the sealing plate 31 and extending into the air distribution chamber 30;

[0034] A first air outlet pipe 60, one end of which passes through the sealing plate 31 and is connected to the first local fan 61, and the other end of which extends into the excavation channel 20;

[0035] A second air outlet pipe 74, one end of which penetrates the sealing plate 31 and is connected to the second local fan 73, and the other end of which extends into the tunnel 10 and points to the exit of the tunnel 10;

[0036] The connecting pipe 41 is connected to the adjacent gas distribution chambers 30 .

[0037] This embodiment is implemented as follows:

[0038] When the present application is in use, air is injected into the air distribution chamber 30 through the set air supply fan 43 and the air supply pipe 40, and then part of the air flow in the air distribution chamber 30 is introduced into the first air outlet pipe 60 to the excavation channel 20 through the first local fan 61, thereby ensuring the oxygen content in the excavation channel 20. The air flowing out of the excavation channel 20 will be sucked in from the air inlet 71 by the second local fan 73, so that the gauze 72 can filter the incoming air, and the filtered air is blown to the outlet end of the tunnel 10 through the second air outlet pipe 74.

[0039] In the present application, a sealing door 32 is provided on the sealing plate 31 corresponding to the air dividing chamber 30 .

[0040] The advantage of the present application over the prior art is that the air entering the tunnel 10 from the excavation passage 20 can be filtered again by the filter chamber 70, thereby improving the air cleanliness.

[0041] See also Figure 1 ,2 A plurality of butt joints 62 are arranged in the excavation channel 20 and distributed along the excavation channel 20 , and the butt joints 62 at the ends thereof are butt jointed with the first air outlet pipe 60 ;

[0042] The butt joint 62 can be butted end to end, and the depth to which the first air outlet pipe 60 extends into the excavation channel can be extended according to the excavation depth.

[0043] See also Figure 1 , the air supply fan 43 is installed in the air supply chamber 50, and a filter screen 51 is provided on the side wall of the air supply chamber 50;

[0044] By placing the air supply fan 43 in the air supply chamber 50 , the air entering the air supply fan 43 can be filtered first by the filter 51 .

[0045] See also Figure 1 , a cooling fan 52 is provided in the air supply chamber 50;

[0046] The air cooler 52 can lower the air temperature so that the temperature of the tunnel 10 and the excavation passage 20 will not be too high in summer.

[0047] See also Figure 1 , 2 , the air supply pipe 50, the connecting pipe 41, and the butt pipe 62 are fixed to the wall through the clamp 42;

[0048] The air supply pipe 50 and the connecting pipe 41 can be fixed to the wall of the tunnel 10 through the clamp 42 , and the butt joint pipe 62 can be fixed to the inner wall of the excavation channel 20 .

[0049] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A ventilation and cooling device for long-distance underground single-headed tunneling, characterized in that: include In the tunnel, an air chamber is opened at the side wall corresponding to the position of the excavation channel; The sealing plate is T-shaped and fixedly connected to the open end of the air chamber. The sealing plate separates the air chamber into an air separation chamber and a filter chamber. The sealing plate has an air inlet at a position corresponding to the filter chamber. Gauze, arranged in the air inlet; The first fan is arranged in the air distribution chamber; The second fan is arranged in the filter room; The air supply pipe has one end connected to the well air supply fan and the other end passing through the sealing plate and extending into the air distribution chamber; A first air outlet pipe, one end of which passes through the sealing plate and is connected to the first local fan, and the other end of which extends into the excavation channel; A second air outlet pipe, one end of which penetrates the sealing plate and is connected to the second local fan, and the other end of which extends into the tunnel and points to the exit of the tunnel; The connecting pipe is connected to the adjacent gas distribution chambers.

2. The underground long-distance single-headed tunneling ventilation and cooling device according to claim 1 is characterized in that: A plurality of butt joints distributed along the tunneling channel are arranged in the tunneling channel, and the butt joints at the ends of the butt joints are butt jointed with the first air outlet pipe.

3. The underground long-distance single-headed tunneling ventilation and cooling device according to claim 1 is characterized in that: The air supply fan is installed in an air supply chamber, and a filter screen is arranged on a side wall of the air supply chamber.

4. The underground long-distance single-headed tunneling ventilation and cooling device according to claim 3 is characterized in that: A cooling fan is arranged in the air supply chamber.

5. The underground long-distance single-headed tunneling ventilation and cooling device according to claim 1 is characterized in that: The air supply pipe, connecting pipe and butt pipe are fixed on the wall through clamps.

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