Intelligent mine underground ventilation system

Abstract

The invention relates to the technical field of underground ventilation, in particular to an intelligent mine underground ventilation system which comprises a main pipeline laid along a roadway path. The partition plate synchronously extends in the main pipeline in the laying direction of the main pipeline so as to divide the inner space of the main pipeline into a dirty air channel and a fresh air channel which are not communicated with each other, air suction openings and air supply openings are formed in the main pipeline at equal intervals along the laying path of the main pipeline, and the dirty air channel is communicated with a roadway through the air suction openings. The fresh air channel communicates with the roadway through an air supply outlet. The dirty air channel can extract dirty air from multiple points along the path of the roadway through the air suction opening, the fresh air channel can supply fresh air from multiple points along the path of the roadway through the air supply opening, the dirty air is extracted while the fresh air is supplied, and transition from the dirty air to the fresh air is stably completed in the roadway.

Description

Technical Field

[0001] The invention relates to the technical field of underground ventilation, in particular to an intelligent underground mine ventilation system. Background Art

[0002] Mine ventilation refers to the introduction of fresh air into the mine to increase the oxygen concentration, so as to dilute and remove toxic and harmful gases and dust in the mine. It is generally divided into two ventilation methods: pressure-in and extraction.

[0003] Pressure ventilation: It is a mechanical ventilation method for underground caverns. It uses ventilation machinery installed outside the cave to deliver fresh air to the working face through ventilation ducts to supply sufficient fresh air in the cave. The polluted air flows out through the tunnel to dilute and remove harmful gases and reduce dust concentration. It is also called positive pressure ventilation. However, when the fresh air moves along the track of the tunnel, it will continuously push the polluted air to gather. In other words, the front end of the fresh air will gather more and more concentrated polluted air, which is not conducive to the safety of underground work.

[0004] Exhaust ventilation: the fan is installed near the return air shaft, and connected to the return air shaft with an air duct, and the return air shaft is closed at the same time. After the fan is working, part of the air in the wind tunnel is extracted, so that the pressure of the air in the shaft is lower than the atmospheric pressure on the ground, forcing the ground air to enter the shaft from the air inlet shaft, and then be discharged by the return air. It is also called negative pressure ventilation; however, in slightly longer tunnels, excessive negative pressure suction will cause the air underground to be thin, which is not conducive to the safety of underground work.

[0005] In summary, the existing two ventilation methods, pressure ventilation and exhaust ventilation, are not conducive to underground work safety during the ventilation process. Summary of the invention

[0006] The present invention aims at the problem that the two existing ventilation modes of pressure ventilation and exhaust ventilation in the prior art are not conducive to the safety of underground work during the ventilation process, and provides an intelligent underground mine ventilation system. The specific technical scheme is as follows:

[0007] An intelligent underground mine ventilation system is installed in a tunnel, and includes a main pipeline laid along the tunnel path. A partition is horizontally arranged in the main pipeline, and the partition extends synchronously in the main pipeline along its laying direction to separate its internal space into a dirty air channel and a fresh air channel that are not connected to each other. Along the laying path of the main pipeline, suction ports and air supply ports are equidistantly opened on the main pipeline, the dirty air channel is connected to the tunnel through the suction port, and the fresh air channel is connected to the tunnel through the air supply port.

[0008] As a further technical solution of the present invention, the ventilation volume of the dirty air channel is Q1, and the ventilation volume of the fresh air channel is Q2, and Q1=Q2.

[0009] As a further technical solution of the present invention, the two ends of the partition plate are respectively connected to sealing plate one and sealing plate two, and the sealing plate one and sealing plate two are distributed on the upper and lower sides of the partition plate. The sealing plate one cooperates with the main pipeline to seal one end of the dirty air channel, and the sealing plate two cooperates with the main pipeline to seal one end of the fresh air channel. The wind direction in the dirty air channel is the same as that in the fresh air channel.

[0010] As a further technical solution of the present invention, along the laying path of the main pipeline, dirty air ducts and fresh air ducts are equidistantly arranged on the main pipeline, the dirty air duct is connected to the dirty air channel, the fresh air duct is connected to the fresh air channel, the dirty air duct and the fresh air duct are both laid along the cross-section trajectory of the alley, the air intake is opened on the dirty air duct, and the air supply outlet is opened on the fresh air duct.

[0011] As a further technical solution of the present invention, along the laying path of the main pipeline, the dirty air duct and the fresh air duct are distributed alternately.

[0012] As a further technical solution of the present invention, a filter portion corresponding to the fresh air duct is provided in the fresh air channel, and the filter portion is arranged in front of the fresh air duct, including two spacers arranged at intervals, and the two spacers cooperate to form a filter cavity, and liquid is injected into the filter cavity. Along the wind direction, the input end and output end of the filter cavity are respectively inserted with insert tube one and insert tube two, and the insertion end of insert tube one is immersed in the liquid.

[0013] As a further technical solution of the present invention, the main pipeline is hoisted on the top wall of the tunnel through a hoisting ring.

[0014] The beneficial effects of this application are as follows:

[0015] (1) In the present application, the dirty air duct can extract the dirty air through the air suction ports at multiple points along the path of the alley, while the fresh air duct can supply fresh air through the air supply ports at multiple points along the path of the alley, thereby achieving the goal of extracting the dirty air while supplying the fresh air, so as to maintain a steady state in the alley and complete the transition from dirty air to fresh air.

[0016] (2) In the present application, the dirty air duct and the fresh air duct are arranged alternately and spaced apart. In this way, the dirty air duct and the fresh air duct are not on the same cross section, and the two will not interfere with each other, and the phenomenon of fresh air being drawn out as soon as it is delivered will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It shows the structural schematic diagram of the intelligent underground mine ventilation system after it is installed in the tunnel;

[0018] Figure 2 The overall structural diagram of the intelligent underground mine ventilation system is shown;

[0019] Figure 3A schematic diagram of the cross-sectional structure of the main pipeline is shown;

[0020] Figure 4 A schematic diagram of the structure of the partition plate is shown;

[0021] Figure 5 The structural schematic diagram of the dirty air duct is shown;

[0022] Figure 6 The schematic diagram of the structure of the fresh air duct is shown;

[0023] Figure 7 A schematic diagram of the internal structure of the fresh air duct is shown.

[0024] Description of the drawings: 100, main duct; 110, partition plate; 111, sealing plate one; 112, sealing plate two; 120, dirty air duct; 130, fresh air duct; 131, partition; 132, filter chamber; 133, insert tube one; 134, insert tube two; 140, lifting ring; 150, dirty air duct; 151, air intake port; 160, fresh air duct; 161, air supply port. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] Figure 1 It shows the structural schematic diagram of the intelligent underground mine ventilation system after it is installed in the tunnel; Figure 1 In the figure, the intelligent mine underground ventilation system is installed in the tunnel to ventilate the tunnel. The tunnel here refers to the construction passage above and below the mine, and the path of the tunnel is also the ventilation path of the mine. That is to say, although only the straight part of the tunnel structure is shown in the figure, technical personnel in this field should know that the tunnel can be winding and tortuous.

[0027] Figure 2 The overall structural diagram of the intelligent underground mine ventilation system is shown; Figure 3 A schematic diagram of the cross-sectional structure of the main pipeline 100 is shown; Figure 4 shows a schematic structural diagram of the spacer plate 110;

[0028] Figure 2-Figure 4In the invention, the intelligent underground mine ventilation system comprises a main pipeline 100 laid along the path of the tunnel, a partition plate 110 is horizontally arranged in the main pipeline 100, and the partition plate 110 is synchronously extended in the main pipeline 100 along its laying direction to separate its internal space into a dirty air channel 120 and a fresh air channel 130 which are not connected to each other. Along the laying path of the main pipeline 100, suction ports 151 and air supply ports 161 are equidistantly provided on the main pipeline 100, the dirty air channel 120 is connected to the tunnel through the suction ports 151, and the fresh air channel 130 is connected to the tunnel through the air supply ports 161; one end of the dirty air channel 120 is connected to a negative pressure device to realize suction, and one end of the fresh air channel 130 is connected to a pressing device, that is, Air supply to the tunnel can be achieved; the dirty air channel 120 can extract dirty air through the air suction port 151 at multiple points along the path of the tunnel, and the fresh air channel 130 can supply fresh air through the air supply port 161 at multiple points along the path of the tunnel, so as to extract dirty air while supplying fresh air, so as to maintain the steady state in the tunnel and complete the transition from dirty air to fresh air; the ventilation volume of the dirty air channel 120 is Q1, and the ventilation volume of the fresh air channel 130 is Q2, Q1=Q2; the ventilation volume of the dirty air channel 120 and the fresh air channel 130 is the same, that is, the amount of dirty air extracted from the dirty air channel 120 is equal to the amount of fresh air supplied by the fresh air channel 130, which can maintain the air concentration and pressure in the tunnel within a certain range to avoid causing underground The two ends of the partition plate 110 are respectively connected with a sealing plate 111 and a sealing plate 2 112, which are distributed on the upper and lower sides of the partition plate 110. The sealing plate 111 cooperates with the main pipe 100 to block one end of the dirty air channel 120, and the sealing plate 2 112 cooperates with the main pipe 100 to block one end of the fresh air channel 130. The wind direction in the dirty air channel 120 is the same as that in the fresh air channel 130; that is, the dirty air channel 120 and the fresh air channel 130 are both one-way channels with one end open, and the opening directions of the two are different, that is, they are respectively at the two ends of the main pipe 100. In this way, the wind direction in the dirty air channel 120 is from the blocked end to the open end, and the fresh air channel 130 is The wind direction in the duct 130 is from the open end to the blocked end, that is, the wind direction in the dirty air duct 120 is the same as the wind direction in the fresh air duct 130, and there will be no phenomenon that two wind flows with opposite wind directions interfere with the outer wall of the main duct 100; at the same time, since the open ends of the dirty air duct 120 and the fresh air duct 130 are distributed in two directions of the main duct 100, the suction device and the air supply device can be installed at two different ends of the main duct 100 respectively to avoid interference; the main duct 100 is hoisted on the top wall of the tunnel through the lifting ring 140; the lifting ring 140 embraces the main duct 100 and is connected to the tunnel through expansion bolts to hoist the main duct 100 on the top of the tunnel to avoid interference with the construction in the tunnel.

[0029] Figure 5 A schematic structural diagram of the dirty air duct 150 is shown; Figure 6A schematic structural diagram of the fresh air duct 160 is shown; Figure 5 and Figure 6 In the embodiment, along the laying path of the main duct 100, the main duct 100 is equidistantly provided with a dirty air duct 150 and a fresh air duct 160, the dirty air duct 150 is connected to the dirty air channel 120, and the fresh air duct 160 is connected to the fresh air channel 130, the dirty air duct 150 and the fresh air duct 160 are both laid along the cross-sectional trajectory of the laneway, the air suction port 151 is opened on the dirty air duct 150, and the air supply port 161 is opened on the fresh air duct 160; the air suction port 151 is provided with multiple groups and is evenly distributed thereon according to the trajectory of the dirty air duct 150, so that the dirty air can be extracted from multiple angles, and the air supply port 161 is also the same, so that the dirty air can be extracted from multiple angles. Fresh air is replaced at each position to ensure uniform distribution of fresh air in a fixed area during the replacement process; along the laying path of the main duct 100, the dirty air duct 150 and the fresh air duct 160 are alternately distributed; the dirty air duct 150 and the fresh air duct 160 are alternately distributed, that is, one dirty air duct 150, one fresh air duct 160, one dirty air duct 150, one fresh air duct 160... In this way, the dirty air duct 150 and the fresh air duct 160 are not on the same cross-section, the two will not interfere with each other, and the phenomenon that the fresh air is just delivered and then extracted will not occur.

[0030] Figure 7 A schematic diagram of the internal structure of the fresh air passage 130 is shown; Figure 7 In the figure, a filter section corresponding to the fresh air duct 160 is arranged in the fresh air channel 130, and the filter section is arranged before the fresh air duct 160, including two spacers 131 arranged at intervals, and the two spacers 131 cooperate to form a filter chamber 132, and liquid is injected into the filter chamber 132. Along the wind direction, the input end and the output end of the filter chamber 132 are respectively inserted with a plug 133 and a plug 2 134, and the insertion end of the plug 133 is immersed in the liquid; by arranging the filter section before the fresh air duct 160, the fresh air can be filtered before entering the tunnel to remove solid impurities carried in the fresh air, and the immersion filtering method can effectively reduce the wind speed of the fresh air to avoid raising internal mineral dust when the fresh air enters; the specific filtering steps are that the fresh air enters the filter chamber 132 from the plug 133, and the outlet of the plug 133 is immersed in the liquid in the filter chamber 132, so the fresh air is discharged from the plug 2 134 after bubbling.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. Intelligent underground mine ventilation system, installed in the tunnel, characterized by: The invention comprises a main pipeline (100) laid along a lane path, wherein a partition plate (110) is horizontally arranged in the main pipeline (100), wherein the partition plate (110) synchronously extends in the main pipeline (100) along its laying direction to separate its internal space into a dirty air channel (120) and a fresh air channel (130) which are not connected to each other, and along the laying path of the main pipeline (100), air suction ports (151) and air supply ports (161) are equidistantly provided on the main pipeline (100), wherein the dirty air channel (120) is connected to the lane via the air suction port (151), and the fresh air channel (130) is connected to the lane via the air supply port (161).

2. The intelligent underground mine ventilation system according to claim 1 is characterized in that: The ventilation volume of the dirty air passage (120) is Q1, and the ventilation volume of the fresh air passage (130) is Q2, where Q1=Q2.

3. The intelligent underground mine ventilation system according to claim 2 is characterized in that: The two ends of the partition plate (110) are respectively connected to a sealing plate 1 (111) and a sealing plate 2 (112), and the sealing plate 1 (111) and the sealing plate 2 (112) are distributed on the upper and lower sides of the partition plate (110). The sealing plate 1 (111) cooperates with the main pipeline (100) to block one end of the dirty air channel (120), and the sealing plate 2 (112) cooperates with the main pipeline (100) to block one end of the fresh air channel (130). The wind direction in the dirty air channel (120) is the same as that in the fresh air channel (130).

4. The intelligent underground mine ventilation system according to claim 3 is characterized in that: Along the laying path of the main pipeline (100), the main pipeline (100) is provided with dirty air pipelines (150) and fresh air pipelines (160) at equal intervals, the dirty air pipeline (150) is connected to the dirty air channel (120), and the fresh air pipeline (160) is connected to the fresh air channel (130), the dirty air pipeline (150) and the fresh air pipeline (160) are both laid along the cross-sectional trajectory of the laneway, the air intake port (151) is provided on the dirty air pipeline (150), and the air supply port (161) is provided on the fresh air pipeline (160).

5. The intelligent underground mine ventilation system according to claim 4 is characterized in that: Along the laying path of the main duct (100), the dirty air duct (150) and the fresh air duct (160) are distributed alternately.

6. The intelligent underground mine ventilation system according to claim 4 is characterized in that: A filter portion corresponding to the fresh air duct (160) is arranged in the fresh air channel (130); the filter portion is arranged before the fresh air duct (160) and comprises two spacers (131) arranged at intervals; the two spacers (131) cooperate to form a filter cavity (132); liquid is injected into the filter cavity (132); along the wind direction, a first insert (133) and a second insert (134) are respectively inserted into the input end and the output end of the filter cavity (132); the insertion end of the first insert (133) is immersed in the liquid.

7. The intelligent underground mine ventilation system according to claim 4 is characterized in that: The main pipeline (100) is hoisted on the top wall of the tunnel via a hoisting ring (140).

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