Method for utilizing wind pressure of drainage well as local ventilation power

Abstract

The invention provides a method for using drainage well wind pressure as local ventilation power, which comprises the following steps of: arranging a retaining wall between the outer side of a drainage well connecting way and a roadway, pre-burying a wind cylinder connecting piece at the upper part of the retaining wall, and forming a drainage port at the lower part of the retaining wall; a drainage adjusting plate which can cover the section of the drainage port and can rotate around the rotating shaft is arranged on the inner side of the drainage port, and the drainage adjusting plate is connected with a floating ball; when the water quantity of the drainage well is enough to enable the floating ball to pull up the drainage adjusting plate, water flow in the drainage well automatically pours to form strong wind pressure, and wind flow is sent to a single-head tunneling face or a water sump through the wind cylinder connecting piece and the negative-pressure wind cylinder. By means of strong wind pressure formed by pouring of water flow at the high position in the drainage well, wind flow is sent to a tunneling face or a water sump through the wind barrel connecting piece and the steel framework wind barrel, the local fan power consumption cost is saved, and meanwhile it is ensured that drained water can be smoothly drained into a roadway ditch in time through the water flow adjusting device.

Description

Technical Field

[0001] The invention mainly relates to the field of gold mine ventilation, and specifically is a method of utilizing the wind pressure of a drainage well as the power for local ventilation. Background Art

[0002] When designing mine drainage, a drainage well connected to the upper tunnel is often designed in the tunnel near the lower middle water tank to achieve the purpose of centrally diverting the upper water to the lower water tank for centralized discharge. When the discharge volume is large, wind pressure is formed from top to bottom under the action of the pouring water flow. Due to the high wind pressure, the site often adopts the method of constructing a closed wall in the upper drainage connection channel to reduce the wind pressure. This part of the wind pressure is not utilized, and the lower middle water tank and the newly opened tunnels around it are all single-ended, requiring forced ventilation through local fans. The continuous operation of the local fans increases the electricity cost. Summary of the invention

[0003] In order to solve the problems that the wind pressure of the drainage well cannot be utilized and the cost of local fan ventilation is high, the present invention provides a method of utilizing the wind pressure of the drainage well as the power for local ventilation. Under certain conditions, the present invention utilizes the strong wind pressure formed by the pouring of water from a high place in the drainage well to realize the delivery of the wind flow to the dead-end excavation face or the water tank through the wind duct connector and the steel skeleton negative pressure wind duct, thereby saving the power consumption cost of the local fan and ensuring that the drainage water can be discharged into the tunnel ditch in a timely and smooth manner through the water flow regulating device.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A method for utilizing the wind pressure of a drainage well as a local ventilation power, wherein the drainage well is connected to an upper drainage lane above, the drainage well is connected to a drainage well communication channel below, and the outer side of the drainage well communication channel is connected to the laneway, characterized in that a retaining wall is arranged between the outer side of the drainage well communication channel and the laneway, a wind tube connecting piece is pre-buried in the upper part of the retaining wall, one end of the wind tube connecting piece is connected to the drainage well communication channel, and the other end is connected to an external negative pressure wind tube and connected to the laneway, the negative pressure wind tube extends to a dead-end excavation face or a water tank, a drainage port is arranged at the lower part of the retaining wall, the inner side of the drainage port is connected to the drainage well communication channel, and the outer side is connected to the inner side of the drainage port. The drainage ditch is connected, and a rotating shaft is arranged at the inner upper edge of the drainage port, the rotating shaft is connected to a drainage regulating plate which can cover the cross section of the drainage port and can rotate around the rotating shaft, and the drainage regulating plate is connected to a float; when the water volume in the drainage well is sufficient to make the float pull up the drainage regulating plate, the water flow in the drainage well automatically pours out to form a strong wind pressure, and the wind flow is sent to the dead-end excavation face or the water tank through the wind tube connecting piece and the negative pressure wind tube, and the water flows into the drainage ditch in the tunnel through the drainage port; when the water volume in the drainage well accumulates again to be sufficient to make the float pull up the drainage regulating plate, the above process is repeated, and the wind pressure of the drainage well is continuously used to achieve ventilation.

[0006] Compared with the prior art, the beneficial effects of the present invention are:

[0007] The present invention utilizes the strong wind pressure formed by the pouring of water from a high altitude in the drainage well, and under the action of the wind pressure, the wind flow is sent to the single-headed excavation face or the water tank through the wind duct connector and the steel skeleton negative pressure wind duct, thereby saving the power consumption cost of the local fan. At the same time, a water flow regulating device is used to ensure that the drainage water can be discharged into the tunnel ditch in a timely and smooth manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the present invention;

[0009] Figure 2 yes Figure 1 A partial enlarged view of I;

[0010] Numbers shown in the figure: 1. Drainage well; 2. Drainage well connecting channel; 3. Air duct connecting piece; 4. Retaining wall; 5. Drainage outlet; 6. Rotating axis; 7. Drainage adjustment plate; 8. Circular hole; 9. Connecting rope; 10. Float; 11. Tunnel; 12. Drainage ditch. DETAILED DESCRIPTION

[0011] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0012] like Figure 1-2 As shown, it includes a drainage well 1, a drainage well communication channel 2, a duct connector 3, and a retaining wall 4. The upper part of the drainage well 1 is connected to the upper drainage lane, the lower part of the drainage well 1 is connected to the drainage well communication channel 2, the outer side of the drainage well communication channel 2 is connected to the lane, the duct connector 3 is pre-buried in the upper position of the retaining wall 4, one end of the duct connector 3 is connected to the drainage well communication channel 2, and the other end of the duct connector 3 is externally connected to a steel skeleton negative pressure duct. The retaining wall 4 is a square brick wall. When a large amount of water flows out of the drainage well 1, strong wind pressure will be generated. Under the dynamic effect of the strong wind pressure and the obstruction of the retaining wall 4, the upper wind flow can be sent to the dead-end excavation face or the water tank through the steel skeleton negative pressure duct connected to the duct connector 3, and the water flows into the drainage ditch 12 in the lane 11 through the drainage port 5.

[0013] The air duct connector 3 is a round galvanized tube with an outer diameter of 60 cm. The air duct connector 3 is exposed 40 cm on both sides of the retaining wall 4. The air duct connector 3 can be tightly combined with the external steel skeleton negative pressure air duct without air leakage.

[0014] The drainage outlet 5 is a drainage channel reserved when the retaining wall 4 is constructed, and the cross-sectional area of ​​the drainage channel is determined according to the maximum drainage volume.

[0015] The rotating shaft 6 is made of smooth round steel bars and is concave. The length of the crossbar of the rotating shaft 6 is greater than the water outlet width of the drain outlet 5. The fixed legs at both ends of the rotating shaft 6 are 10 cm long and are embedded in the retaining wall 4 above the drain outlet 5. The drainage adjustment plate 7 is a square galvanized iron plate that can cover the cross-section of the drain outlet 5. The upper end of the drainage adjustment plate 7 is a circular scroll structure that can be rotatably mounted on the rotating shaft 6. The circular hole 8 reserved at the lower end of the drainage adjustment plate 7 is connected to the float 10 through a connecting rope 9. The float 10 is a large buoyancy hollow plastic ball with a connecting ring. When the water flows, the water level in the retaining wall 4 rises, and the float 10 can drive the drainage adjustment plate 7 to float, thereby controlling the retaining wall 4 to maintain a stable low water level, while ensuring that the wind flow is not discharged from the drain outlet 5, and is all discharged from the wind tube connector 3.

[0016] When using this method, first measure the maximum flow of the water pouring from above, calculate the cross-sectional specifications of the drainage outlet 5, make the rotating shaft 6 and the drainage adjustment plate 7 according to the cross-sectional specifications of the drainage outlet 5 to ensure that the drainage outlet 5 can be covered, press the upper end of the drainage adjustment plate 7 into a circular roll structure, drill a circular hole 8 at the lower end of the drainage adjustment plate 7 with an electric drill, install the drainage adjustment plate 7 on the rotating shaft 6, connect the circular hole 8 to the floating ball 10 through a connecting rope 9, cut off the water flow above the drainage well 1, and then construct the retaining wall 4, reserve the drainage outlet 5 at the lower central position, and embed the wind tube connector 3 and the connected rotating shaft 6 into the wall of the retaining wall 4, connect the outer end of the wind tube connector 3 to the steel skeleton negative pressure wind tube, and fasten it with iron wire, and extend the external wind tube to the dead-end excavation face or water tank, and restore the water flow above after the wall hardens. The wind flow generated under the action of strong wind pressure can be sent to the target location through the wind tube connector 3 and the external wind tube.

[0017] In the description of the present invention, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A method of using the wind pressure of a drainage well as a local ventilation power, wherein the drainage well is connected to an upper drainage lane above the drainage well, the drainage well connecting channel is connected to the drainage well below the drainage well, and the outer side of the drainage well connecting channel is connected to the laneway, characterized in that: A retaining wall is arranged between the outer side of the drainage well connecting channel and the laneway, a duct connector is embedded in the upper part of the retaining wall, one end of the duct connector is connected to the drainage well connecting channel, and the other end is connected to a negative pressure duct and connected to the laneway, the negative pressure duct extends to the dead-end excavation face or the water tank, a drainage port is arranged at the lower part of the retaining wall, the inner side of the drainage port is connected to the drainage well connecting channel, and the outer side is connected to the drainage ditch in the laneway, a rotating shaft is arranged at the inner upper edge of the drainage port, and the rotating shaft is connected to a can cover the drainage, The cross-section of the water outlet is large and can rotate around the rotation axis. The drainage regulating plate is connected to a float. When the water volume in the drainage well is sufficient to make the float pull up the drainage regulating plate, the water in the drainage well automatically pours out to form a strong wind pressure, and the wind flow is sent to the dead-end excavation face or the water tank through the wind tube connecting piece and the negative pressure wind tube. The water flows into the drainage ditch in the tunnel through the drainage outlet. When the water volume in the drainage well accumulates again to be sufficient to make the float pull up the drainage regulating plate, the above process is repeated, and ventilation is continuously achieved by using the wind pressure of the drainage well.

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