Underground ventilation chamber for increasing roadway ventilation

Abstract

The utility model relates to an underground ventilation chamber for increasing roadway ventilation, which belongs to the technical field of underground ventilation facilities and is used for increasing underground roadway ventilation. According to the technical scheme, a chamber is a closed cuboid and is built on one side of a roadway, an air inlet barrel is installed at the end, facing a roadway inlet, of the chamber, an air outlet barrel is installed at the end, facing a working face, of the chamber, a separation wall is built in the middle of the chamber, the air inlet barrel and the air outlet barrel are located on the two sides of the separation wall respectively, and a ventilation opening is formed in the upper portion of the separation wall. A spraying dust removal pipeline is installed on the ventilation opening, and the ventilator is installed at an air inlet of an air outlet barrel in the chamber. The underground ventilation chamber is additionally arranged in the long-distance roadway, so that the effects of increasing the ventilation quantity of the working face and purifying air can be achieved, the problems of insufficient ventilation air pressure and air pollution of the underground long-distance roadway are effectively solved, the air environment of the underground working face can be effectively improved, the inspection time is shortened, production organization planning is facilitated, and the working efficiency is improved. And the method has relatively high popularization significance and economic significance.

Description

Technical Field

[0001] This utility model relates to an underground ventilation chamber for increasing ventilation in roadways, belonging to the technical field of underground ventilation facilities. Background Technology

[0002] Underground ventilation is the environmental foundation of underground mining production, playing a crucial role in supplying fresh air to underground workers and thus an irreplaceable part of mine construction and production. During the excavation of ultra-long underground roadways, issues such as air leakage and air source contamination can easily occur, resulting in insufficient airflow or substandard gas quality at the working face, adversely affecting production schedules. Current ventilation solutions for ultra-long roadways generally involve adding relay fans to the ventilation ducts or adding fans at the working face, employing a combination of forced and exhaust ventilation. However, these two solutions still have many shortcomings. For example, air leakage at the ventilation duct interfaces can lead to air contamination within the duct, or small airflow loops can occur at the working face, easily causing dust to fly and pollute the air in the roadway, affecting normal production. Therefore, improvements are necessary. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an underground ventilation chamber that increases the ventilation of roadways. This ventilation chamber can increase the air pressure in the roadway and purify the air in the roadway, effectively solving the problems of insufficient ventilation air pressure and air pollution in long underground roadways, improving the air environment of the underground working face, and ensuring the normal operation of production.

[0004] The technical solution to the above technical problem is:

[0005] An underground ventilation chamber for increasing tunnel ventilation includes a chamber, an air inlet duct, an air outlet duct, an isolation wall, a spray dust removal pipe, and a ventilation fan. The chamber is a closed cuboid built on one side of the tunnel. The air inlet duct is installed at the end of the chamber facing the tunnel entrance, and the air outlet duct is installed at the end of the chamber facing the working face. The isolation wall is built in the middle of the chamber, with the air inlet and air outlet ducts located on opposite sides of the isolation wall. The upper part of the isolation wall has ventilation openings, and spray dust removal pipes are installed on the ventilation openings. The ventilation fan is installed at the air inlet of the air outlet duct inside the chamber.

[0006] The aforementioned underground ventilation chamber for increasing tunnel ventilation includes a spray dust removal pipe composed of flame-retardant and fire-resistant rubber hoses and high-pressure spray nozzles. Multiple flame-retardant and fire-resistant rubber hoses are fixed in parallel on one side of the ventilation opening of the isolation wall, with a spacing of 15-20cm between adjacent flame-retardant and fire-resistant rubber hoses. The rear ends of the multiple flame-retardant and fire-resistant rubber hoses are connected to the tunnel water supply pipes, and high-pressure spray nozzles are installed at the front ends of the multiple flame-retardant and fire-resistant rubber hoses.

[0007] The ventilation fan in the underground ventilation chamber mentioned above, which increases the ventilation of the roadway, is a relay fan, and the air volume of the fan is less than that of the upstream fan.

[0008] The beneficial effects of this utility model are:

[0009] This utility model increases ventilation and purifies the air at the working face by adding an underground ventilation chamber in a long tunnel. It effectively solves the problems of insufficient ventilation pressure and air pollution in long underground tunnels, improves the air environment at the working face, reduces inspection time, and is beneficial to production organization and planning. It has high promotion and economic significance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] The following are marked on the diagram: 1. Lane, 2. Chamber, 3. Air inlet, 4. Air outlet, 5. Isolation wall, 6. Spray dust removal pipe, 7. Ventilation fan, 8. Ventilation outlet. Detailed Implementation

[0012] This utility model consists of a chamber 2, an air inlet duct 3, an air outlet duct 4, an isolation wall 5, a spray dust removal pipe 6, and a ventilator 7.

[0013] As shown in the figure, chamber 2 is a closed cuboid. Chamber 2 is built on one side of tunnel 1, and isolation wall 5 is built in the middle of chamber 2. Chamber 2 and isolation wall 5 can be built with hollow bricks or cement. Isolation wall 5 divides chamber 2 into two independent sealed spaces, each of which is 2m*2m in size.

[0014] As shown in the figure, the air inlet duct 3 and the air outlet duct 4 are located on both sides of the isolation wall 5 inside the chamber 2. The air inlet duct 3 is installed at the end of the chamber 2 facing the entrance of the roadway 1, and the air outlet duct 4 is installed at the end of the chamber 2 facing the working face. The air in the roadway 1 is drawn in from the air inlet duct 3 of the chamber 2 and discharged from the air outlet duct 4 of the chamber 2.

[0015] The diagram shows that there is a ventilation opening 8 on the upper part of the isolation wall 5, and a spray dust suppression pipe 6 is installed on the ventilation opening 8. The spray dust suppression pipe 6 consists of flame-retardant and fire-resistant rubber hoses and high-pressure spray nozzles. Multiple flame-retardant and fire-resistant rubber hoses are fixed in parallel on one side of the ventilation opening 8 of the isolation wall 5, with a spacing of 15-20cm between adjacent flame-retardant and fire-resistant rubber hoses. The rear ends of the multiple flame-retardant and fire-resistant rubber hoses are connected to the water supply pipe of the tunnel, and high-pressure spray nozzles are installed at the front ends of the multiple flame-retardant and fire-resistant rubber hoses. Under the pressure in the water supply pipe, the spray automatically suppresses dust.

[0016] As shown in the diagram, the ventilator 7 is installed at the air inlet of the air outlet duct 4 inside the chamber 2. The ventilator 7 is a relay fan, and its air volume is less than that of the upstream fan. The ventilator 7 must be the same model as the upstream fan and should only be turned on after the upstream fan has been started.

[0017] An embodiment of this utility model is as follows:

[0018] The length of chamber 2 is 4m, the width is 2m, and the height is 2m;

[0019] The diameter of air inlet duct 3 is 600mm;

[0020] The diameter of the air outlet duct 4 is 600mm;

[0021] The thickness of the isolation wall 5 is 240mm and the height is 2m. The length of the ventilation opening 8 is 700mm and the height is 600mm.

[0022] The model of the ventilation fan 7 is SFG-6 axial flow fan.

Claims

1. An underground ventilation chamber for increasing roadway ventilation, characterized in that: It includes a chamber (2), an air inlet duct (3), an air outlet duct (4), an isolation wall (5), a spray dust removal pipe (6), and a ventilator (7). The chamber (2) is a closed cuboid. The chamber (2) is built on one side of the roadway (1). The air inlet duct (3) is installed at one end of the chamber (2) facing the entrance of the roadway. The air outlet duct (4) is installed at one end of the chamber (2) facing the working face. The isolation wall (5) is built in the middle of the chamber (2). The air inlet duct (3) and the air outlet duct (4) are located on both sides of the isolation wall (5). There is a ventilation opening (8) on the upper part of the isolation wall (5). The spray dust removal pipe (6) is installed on the ventilation opening (8). The ventilator (7) is installed at the air inlet of the air outlet duct (4) in the chamber (2).

2. The underground ventilation chamber for increasing roadway ventilation according to claim 1, characterized in that: The spray dust removal pipe (6) consists of flame-retardant and fire-resistant rubber hoses and high-pressure spray nozzles. Multiple flame-retardant and fire-resistant rubber hoses are fixed in parallel on one side of the ventilation opening (8) of the isolation wall (5). The interval between adjacent flame-retardant and fire-resistant rubber hoses is 15-20cm. The rear end of multiple flame-retardant and fire-resistant rubber hoses is connected to the roadway water supply pipe. The front end of multiple flame-retardant and fire-resistant rubber hoses is equipped with high-pressure spray nozzles.

3. The underground ventilation chamber for increasing roadway ventilation according to claim 1, characterized in that: The ventilator (7) is a relay fan, and the air volume of the ventilator (7) is less than that of the upstream fan.

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