Ventilation wall convenient and fast to construct and used for underground ventilation

Abstract

The utility model belongs to the technical field of mine ventilation, and particularly discloses an underground ventilation ventilation wall convenient and fast to construct. According to the ventilation wall, a plurality of transverse and vertical supporting rods are arranged in a roadway, the two ends of each supporting rod are fixedly connected with the inner wall of the roadway and are mutually connected to form an integral framework, a mesh screen is laid on the integral framework, and tarpaulin is laid on the mesh screen; threaded sections are arranged at two ends of an adjusting lead screw of the supporting rod, an adjusting structure is arranged in the middle of the adjusting lead screw, one end of a steel pipe is fixed to the end face of a lead screw nut, fixing piles are fixed to the other end of the steel pipe, the lead screw nut and a locknut are in threaded connection with the threaded sections respectively, and the fixing piles at two ends of the adjusting lead screw are inserted into holes in the inner wall of a roadway respectively. The whole framework is formed by the length-adjustable supporting rods and fixedly connected with the inner wall of the roadway, and the screen and the tarpaulin are laid on the whole framework, so that the ventilation wall can be rapidly constructed, the ventilation wall can be easily disassembled, recycled and reused, and the ventilation wall has the advantages of being simple in structure, rapid to assemble and disassemble, capable of being reused, flexible in application and low in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine ventilation, and in particular relates to an underground ventilation wind wall which has the advantages of simple structure, reusability, flexible application, low cost and is easy to construct quickly. Background Art

[0002] The underground ventilation system is one of the important equipment for safe production in mines. It is mainly used to discharge toxic and harmful gases and waste gases underground, replenish fresh oxygen, and control the temperature, humidity, oxygen content and other indicators underground to ensure the safety of miners. The management of underground ventilation systems requires the scientific and reasonable distribution of required air volume and the principle of ensuring ventilation safety. Improving the ventilation system is an important guarantee for safe production in mines. Therefore, as the underground tunnels continue to extend and branch with the continuous extension of mining, some tunnels are gradually abandoned, and the abandoned tunnels should be closed in time, otherwise it will lead to air leakage, air leakage, dirty air circulation, etc., resulting in the loss of effective air volume, and the power consumption of the ventilation system will gradually increase, thereby increasing the management difficulty and management cost of the underground ventilation system, and there are serious safety risks.

[0003] At present, abandoned tunnels are generally permanently closed by building brick walls and pouring concrete walls. However, since some abandoned tunnels need to be used later, such tunnels are permanently closed. Not only can the permanently closed wind walls built or poured not be reused after being dismantled, resulting in high closing costs, but also the construction and dismantling work is large, resulting in long construction time, making it difficult to close and open the required tunnels in time. For this reason, in the prior art, wooden boards are used to build wind walls to close the corresponding tunnels. Although the speed of construction and dismantling is fast and the cost is low, there are inevitable gaps in the wind walls built by wooden boards, resulting in a large air leakage rate of the wind walls, which increases the control difficulty and cost of the underground ventilation system. Moreover, the wooden boards are easily deformed and rotten in the humid environment underground, which further increases the control difficulty of the underground ventilation system and reduces the effective life of the wind walls. In addition, the number of times the wooden boards can be reused is limited, resulting in the difficulty of effectively reducing the use cost of the wind walls.

[0004] Therefore, it is particularly important to study and produce a wind wall for underground ventilation with simple structure, quick installation and disassembly, reusability, flexible application and low cost in order to improve the management of ventilation system. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an underground ventilation wind wall which has a simple structure, is reusable, flexible in application, low in cost and easy to construct quickly.

[0006] The utility model is implemented as follows: it comprises a support rod, a mesh screen, a tarpaulin, and a lane, wherein a plurality of transverse and vertical support rods are arranged at intervals in the transverse section of a preset wind wall in the lane, and both ends of each transverse and vertical support rod are respectively detachably fixedly connected to the corresponding inner wall of the lane and are staggeredly connected to each other to form an integral frame, the mesh screen is laid along the transverse section of the preset wind wall in the lane and is detachably fixedly connected to the integral frame, and the tarpaulin is detachably fixedly laid on the mesh screen to form a wind wall;

[0007] The support rod includes an adjusting screw, a screw nut, a locking nut, a steel pipe, and a fixed pile. Both ends of the adjusting screw are respectively provided with threaded sections and an adjusting structure is also provided between the threaded sections. One end of the steel pipe is fixedly connected to the end face of the screw nut. The fixed pile is fixedly arranged at the other end of the steel pipe and extends to a side away from the screw nut. The side of the screw nut away from the steel pipe is threadedly connected to the threaded section. The locking nut is threadedly connected to the threaded section. The fixed piles at both ends of the adjusting screw are respectively inserted into corresponding eyelets on the inner wall of the tunnel.

[0008] Furthermore, the adjusting structure of the adjusting screw rod is a coaxially fixed polygonal column or adjusting holes in at least two directions vertically opened on the adjusting screw rod.

[0009] Furthermore, the steel pipe is coaxially fixed at one end of the screw nut, the inner diameter of the steel pipe is larger than the large diameter of the adjusting screw, the fixing pile is fixedly connected to the outer wall or end face of the steel pipe and is parallel to the axis of the steel pipe, and the length of the threaded section is larger than the sum of the lengths of the screw nut and the anti-loosening nut.

[0010] Furthermore, the length of the threaded section is 20 to 40 cm, and the difference between the sum of the lengths of the screw nut and the anti-loosening nut and the length of the threaded section is 5 to 20 cm.

[0011] Furthermore, the laterally arranged support rods are spaced between the arch line and the bottom plate of the tunnel, and the fixed piles at both ends are respectively inserted into the eyelets of the two sides; the vertically arranged support rods are spaced between the two sides of the tunnel, and the fixed piles at both ends of the vertically arranged support rods are respectively inserted into the top between the arch lines on both sides of the tunnel and the corresponding eyelets at the bottom of the tunnel.

[0012] Furthermore, the mesh screen includes a curved mesh screen and a square mesh screen, the upper side of the curved mesh screen matches the top arch of the alley, the width of the square mesh screen is the same as that of the curved mesh screen, an curved mesh screen and at least one square mesh screen are vertically arranged in the transverse section of the preset wind wall in the alley, and at least two curved mesh screens and two square mesh screens are transversely arranged in the transverse section of the preset wind wall in the alley, and adjacent curved mesh screens and square mesh screens are detachably connected and detachably fixedly connected to the overall frame.

[0013] Furthermore, reinforcing ribs are fixedly provided on the periphery of the arc-shaped mesh screen and the square mesh screen, and adjacent arc-shaped mesh screens and the square mesh screens are detachably connected via the reinforcing ribs and are detachably fixedly connected to the overall frame via the reinforcing ribs.

[0014] Furthermore, the mesh screen is laid on the downwind side of the overall frame, and a back strip is provided on the surface of the tarpaulin, and the back strip is detachably fixedly connected to the mesh screen and / or the overall frame.

[0015] Furthermore, a damper or a wind window is arranged on the mesh screen or between the mesh screens, and the frame of the damper or the wind window is detachably fixedly connected to the overall frame.

[0016] Furthermore, at least one diagonal brace is provided on the upwind direction of the wind wall, one end of which is connected to the overall frame and the other end is supported on the bottom of the tunnel.

[0017] Beneficial effects of the utility model:

[0018] 1. The utility model arranges adjustable-length support rods at intervals in the tunnel horizontally and vertically, and inserts the fixed piles at both ends of the support rods into the corresponding eyelets on the inner wall of the tunnel to form an overall frame, so that the overall frame has strong stability and external force resistance. Then, screens and tarpaulins are laid on the overall frame, so that a wind wall capable of closing the tunnel can be quickly constructed, and the air volume can be distributed according to demand at the production operation point, which not only improves the disaster resistance and mitigation capabilities of the mine ventilation system, but also reduces the power energy consumption of the ventilation system.

[0019] 2. The screw nut in the support rod of the utility model is fixedly connected with the steel pipe and the fixed pile in sequence, and then is threadedly connected with the adjusting screw rod. Therefore, the length of the support rod can be freely adjusted according to requirements, so as to adapt to the blocking of tunnels within a certain size range, and it is also convenient for the fixed piles at both ends of the support rod to be inserted or withdrawn from the corresponding eyelets on the inner wall of the tunnel, which effectively improves the efficiency of installation and disassembly. The support rod is not easy to be damaged during installation and disassembly, and is not easy to deform in a humid tunnel. It is not easy to rust through proper lubrication or the use of stainless steel materials, thereby increasing the number of times it can be reused and significantly reducing the use cost of the wind wall.

[0020] 3. The utility model adopts a modular mesh screen, which can not only make the screen form a standardized product and reduce the cost of each module, but also can form the required wind wall by combining screens of different modules as needed, thereby improving the ability of the screen to adapt to different tunnel sections. Therefore, the application is more flexible, and the number of screens and the cost of use are reduced.

[0021] 4. The utility model adopts a tarpaulin that is detachably fixed and laid on the mesh screen, which can effectively block the ventilation in the tunnel, thereby avoiding the problem of a large air leakage rate caused by building a wind wall with wooden boards. In addition, air doors or wind windows can be set on or between the mesh screens, and then the tarpaulin can be placed around the air doors or wind windows to form an air volume adjustment or pedestrian function, thereby improving the flexibility of application.

[0022] In summary, the utility model has the characteristics of simple structure, quick installation and disassembly, reusability, flexible application and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 for Figure 1 Rear view of

[0025] Figure 3 for Figure 2 AA section view;

[0026] Figure 4 It is a schematic diagram of the support rod structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the mesh screen structure of the utility model;

[0028] In the figure: 1- support rod, 11- adjusting screw rod, 111- threaded section, 112- adjusting hole, 12- screw rod nut, 13- anti-loosening nut, 14- steel pipe, 15- fixed pile, 2- mesh screen, 21- arc mesh screen, 22- square mesh screen, 23- reinforcing rib, 3- tarpaulin, 4- tunnel, 5- back bar, 6- diagonal support. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0030] like Figures 1 to 5 As shown, the utility model comprises a support rod 1, a mesh screen 2, a tarpaulin 3, and a tunnel 4. A plurality of transverse and vertical support rods 1 are arranged at intervals in the transverse section of a preset wind wall in the tunnel 4. Both ends of each transverse and vertical support rod 1 are detachably fixedly connected to the corresponding inner wall of the tunnel 4 and are staggeredly connected to each other to form an integral frame. The mesh screen 2 is laid along the transverse section of the preset wind wall in the tunnel 4 and is detachably fixedly connected to the integral frame. The tarpaulin 3 is detachably fixedly laid on the mesh screen 2 to form a wind wall.

[0031] The support rod 1 includes an adjusting screw rod 11, a screw rod nut 12, a locking nut 13, a steel pipe 14, and a fixing pile 15. The two ends of the adjusting screw rod 11 are respectively provided with threaded sections 111 and an adjusting structure is also provided between the threaded sections 111. One end of the steel pipe 14 is fixedly connected to the end face of the screw rod nut 12. The fixing pile 15 is fixedly arranged at the other end of the steel pipe 14 and extends to the side away from the screw rod nut 12. The side of the screw rod nut 12 away from the steel pipe 14 is threadedly connected to the threaded section 111. The locking nut 13 is threadedly connected to the threaded section 111. The fixing piles 15 at both ends of the adjusting screw rod 11 are respectively inserted into the corresponding eyelets on the inner wall of the tunnel 4.

[0032] The inner wall of the lane 4 includes two sides, a top and a bottom of the lane 4.

[0033] The adjusting structure of the adjusting screw rod 11 is a coaxially fixed polygonal column or an adjusting hole 112 vertically opened in at least two directions on the adjusting screw rod 11 .

[0034] The steel pipe 14 is coaxially fixed at one end of the screw nut 12, the inner diameter of the steel pipe 14 is larger than the major diameter of the adjusting screw 11, the fixing pile 15 is fixedly connected to the outer wall or end face of the steel pipe 14 and is parallel to the axis of the steel pipe 14, and the length of the threaded segment 111 is larger than the sum of the lengths of the screw nut 12 and the anti-loosening nut 13.

[0035] The length of the threaded section 111 is 20 to 40 cm, and the difference between the sum of the lengths of the screw nut 12 and the lock nut 13 and the length of the threaded section 111 is 5 to 20 cm.

[0036] The support rods 1 arranged horizontally in the utility model are spaced apart between the arch line of the lane 4 and the bottom plate, and the fixing piles 15 at both ends are respectively inserted into the eyelets of the two sides; the support rods 1 arranged vertically are spaced apart between the two sides of the lane 4, and the fixing piles 15 at both ends of the support rods 1 arranged vertically are respectively inserted into the top between the arch lines on both sides of the lane 4 and the corresponding eyelets at the bottom of the lane 4.

[0037] The mesh screen 2 includes a curved mesh screen 21 and a square mesh screen 22. The upper side of the curved mesh screen 21 matches the top arch of the tunnel 4. The square mesh screen 22 has the same width as the curved mesh screen 21. An curved mesh screen 21 and at least one square mesh screen 22 are vertically arranged in the transverse section of the preset wind wall in the tunnel 4. At least two curved mesh screens 21 and two square mesh screens 22 are transversely arranged in the transverse section of the preset wind wall in the tunnel 4. Adjacent curved mesh screens 21 and square mesh screens 22 are detachably connected and detachably fixedly connected to the overall frame.

[0038] The arc-shaped mesh screen 21 and the square mesh screen 22 are fixedly provided with reinforcing ribs 23 on their peripheries. Adjacent arc-shaped mesh screens 21 and square mesh screens 22 are detachably connected via the reinforcing ribs 23 and are detachably fixedly connected to the overall frame via the reinforcing ribs 23 .

[0039] The mesh screen 2 is laid on the downwind side of the overall frame, and a back strip 5 is attached to the surface of the tarpaulin 3. The back strip 5 is detachably fixedly connected to the mesh screen 2 and / or the overall frame.

[0040] A damper or a wind window is arranged on the mesh screen 2 or between the mesh screens 2, and the frame of the damper or the wind window is detachably fixedly connected to the overall frame.

[0041] At least one diagonal brace 6 is provided in the upwind direction of the wind wall, one end of which is connected to the overall frame and the other end is supported on the bottom of the tunnel 4. Example

[0042] like Figures 1 to 5 As shown in the figure, the construction process of the wind wall for underground ventilation is as follows:

[0043] 1. Use round steel with a diameter of 40mm and a length of 75cm to process 6 adjusting screw rods 11. Among them, 30cm of thread is drawn at both ends of the adjusting screw rod 11 to form a threaded section 111. Then, a screw nut 12 with a diameter of 50mm and a length of 10cm and a locking nut 13 with a diameter of 50mm and a length of 4cm are respectively set on the threaded section 111 (to prevent the screw nut 12 from loosening). A 15cm long smooth rod is formed between the threaded sections 111 at both ends of the adjusting screw rod 11, and a 18mm diameter eyelet is vertically punched in at least two different directions on the smooth rod as an adjusting hole 112.

[0044] 2. According to the specifications of the tunnel 4, a DN50 steel pipe 14 is welded to one end of the screw nut 12 to form 6 struts 1 of different lengths. The actual length of the struts 1 shall be based on the actual specifications of the tunnel 4 on site (here, the length of 3 horizontal struts 1 is 4m, the length of 1 vertical strut 1 is 3.6m, and the length of 2 vertical struts 1 is 3.2m). In order to prevent the contact points between the two ends of the DN50 steel pipe 14 and the tunnel 4 from slipping under external force, a 10cm long 18# round steel is welded to the outer wall of the end of the steel pipe 14 away from the screw nut 12 as a fixed pile 15.

[0045] 3. Select the construction site for building the wind wall, and distribute three horizontal support rods 1 at intervals from the arch line of the tunnel 4 to the bottom plate. Make three eyelets with a diameter of 20mm and a depth of 15cm on both sides of the tunnel 4, and insert the fixed piles 15 at both ends of the horizontal support rod 1 into the eyelets to prevent the support rod 1 from falling down; then insert a long rod into the adjustment hole 112 of the horizontal support rod 1 and stir the adjustment screw rod 11 in the clockwise direction, so that the fixed piles 15 at both ends of the horizontal support rod 1 extend to the two ends of the tunnel 4 and press tightly; then tighten the anti-loosening nut 13 to ensure that the adjustment screw rod 11 is not easy to loosen under the action of external force. Then, a hole with a diameter of 20mm and a depth of 15cm is made between the middle of the top of the tunnel 4 and the arch line and the corresponding bottom of the tunnel 4, and the fixed piles 15 at both ends of the vertical support rod 1 are inserted into the hole to prevent the support rod 1 from falling; then the vertical support rod 1 is stirred in a clockwise direction to adjust the screw rod 11, so that the fixed piles 15 at both ends of the vertical support rod 1 are stretched and pressed against the bottom of the tunnel 4; then the anti-loosening nut 13 is tightened to ensure that the adjusting screw rod 11 is not easy to loosen under the action of external force. The intersection of the horizontal and vertical support rods 1 is reinforced with 8# iron wire, so that the 6 support rods 1 are connected into an integral frame; finally, 4 DN50 pipes with a length of 3.5m are set in the upwind direction of the wind wall, so that one end of the DN50 pipe is hinged to the overall frame and the other end is supported at the bottom of the tunnel 4 as a diagonal brace 6 to enhance the impact resistance of the wind wall. When dismantling, first loosen the anti-loosening nut 13, then stir the adjusting screw 11 in the counterclockwise direction, and the fixing piles 15 at both ends of the support rod 1 will shrink toward the middle under the drive of the screw nut 12. After the fixing piles 15 leave the eyelet from the inside to the outside, the support rod 1 can be recovered for reuse.

[0046] 4. Make 4 curved mesh screens 21 that match the top arch of the lane 4, and 4 ordinary square mesh screens 22, all with the size of 2.0m long × 1.0m wide, then weld 6mm diameter steel bars as reinforcing ribs 23 on the periphery of the curved mesh screen 21 and the square mesh screen 22, then lay the curved mesh screen 21 and the square mesh screen 22 on the downwind side of the overall frame, and use iron wire or plastic strapping to tie the reinforcing ribs 23 to the overall frame, then lay the flame-retardant tarpaulin 3 on the mesh screen 2 and fix it with iron wire or plastic strapping, and finally press some back strips 5 on the tarpaulin 3 for reinforcement to prevent the tarpaulin 3 from being opened under the action of external force, and finally form a wind wall to cut off the wind flow. The above process can be reversed to complete the disassembly.

[0047] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A wind wall for underground ventilation that is easy to construct quickly, characterized in that: It comprises a support pole (1), a mesh screen (2), a tarpaulin (3), and a tunnel (4); a plurality of transverse and vertical support poles (1) are arranged at intervals in the transverse cross section of a preset wind wall in the tunnel (4); both ends of each transverse and vertical support pole (1) are detachably fixedly connected to the inner wall of the corresponding tunnel (4) and are staggeredly connected to each other to form an overall frame; the mesh screen (2) is laid along the transverse cross section of the preset wind wall in the tunnel (4) and is detachably fixedly connected to the overall frame; the tarpaulin (3) is detachably fixedly laid on the mesh screen (2) to form a wind wall; The support rod (1) comprises an adjusting screw (11), a screw nut (12), a locking nut (13), a steel pipe (14), and a fixing pile (15). The two ends of the adjusting screw (11) are respectively provided with threaded sections (111), and an adjusting structure is further provided between the threaded sections (111). One end of the steel pipe (14) is fixedly connected to the end surface of the screw nut (12). The fixing pile (15) is fixedly arranged at the other end of the steel pipe (14) and extends to a side away from the screw nut (12). The side of the screw nut (12) away from the steel pipe (14) is threadedly connected to the threaded section (111). The locking nut (13) is threadedly connected to the threaded section (111). The fixing piles (15) at the two ends of the adjusting screw (11) are respectively inserted into corresponding eyelets on the inner wall of the tunnel (4).

2. The wind wall for underground ventilation that is easy to construct quickly according to claim 1 is characterized in that: The adjusting structure of the adjusting screw rod (11) is a coaxially fixed polygonal column or an adjusting hole (112) vertically opened in at least two directions on the adjusting screw rod (11).

3. The wind wall for underground ventilation that is easy to construct quickly according to claim 1 is characterized in that: The steel pipe (14) is coaxially fixed to one end of the screw nut (12); the inner diameter of the steel pipe (14) is larger than the major diameter of the adjusting screw (11); the fixing pile (15) is fixedly connected to the outer wall or end face of the steel pipe (14) and is parallel to the axis of the steel pipe (14); and the length of the threaded section (111) is larger than the sum of the lengths of the screw nut (12) and the locking nut (13).

4. The wind wall for underground ventilation that is easy to construct quickly according to claim 3 is characterized in that: The length of the threaded section (111) is 20 to 40 cm, and the difference between the sum of the lengths of the screw nut (12) and the anti-loosening nut (13) and the length of the threaded section (111) is 5 to 20 cm.

5. The wind wall for underground ventilation that is easy to construct quickly according to claim 1 is characterized in that: The support rods (1) arranged horizontally are spaced between the arch line and the bottom plate of the tunnel (4), and the fixed piles (15) at both ends are respectively inserted into the eyelets of the two sides; the support rods (1) arranged vertically are spaced between the two sides of the tunnel (4), and the fixed piles (15) at both ends of the support rods (1) arranged vertically are respectively inserted into the top between the arch lines on both sides of the tunnel (4) and the corresponding eyelets at the bottom of the tunnel (4).

6. The wind wall for underground ventilation that is easy to construct quickly according to any one of claims 1 to 5, characterized in that: The mesh screen (2) comprises a curved mesh screen (21) and a square mesh screen (22); the upper side of the curved mesh screen (21) matches the top arch of the tunnel (4); the width of the square mesh screen (22) is the same as that of the curved mesh screen (21); one curved mesh screen (21) and at least one square mesh screen (22) are vertically arranged in a transverse section of a preset wind wall in the tunnel (4); at least two curved mesh screens (21) and two square mesh screens (22) are transversely arranged in a transverse section of a preset wind wall in the tunnel (4); adjacent curved mesh screens (21) and square mesh screens (22) are detachably connected to each other and are detachably fixedly connected to the overall frame.

7. The wind wall for underground ventilation that is easy to construct quickly according to claim 6 is characterized in that: Reinforcing ribs (23) are fixedly arranged on the periphery of the arc-shaped mesh screen (21) and the square mesh screen (22); adjacent arc-shaped mesh screens (21) and square mesh screens (22) are detachably connected via the reinforcing ribs (23) and are detachably fixedly connected to the overall frame via the reinforcing ribs (23).

8. The wind wall for underground ventilation that is easy to construct quickly according to claim 6 is characterized in that: The mesh screen (2) is laid on the downwind side of the overall frame, and a back strip (5) is provided on the surface of the tarpaulin (3), wherein the back strip (5) is detachably fixedly connected to the mesh screen (2) and / or the overall frame.

9. The wind wall for underground ventilation that is easy to construct quickly according to claim 6 is characterized in that: A damper or a wind window is arranged on the mesh screen (2) or between the mesh screens (2), and the frame of the damper or the wind window is detachably fixedly connected to the overall frame.

10. The wind wall for underground ventilation that is easy to construct quickly according to claim 6, characterized in that: At least one diagonal brace (6) is provided in the upwind direction of the wind wall, one end of which is connected to the overall frame and the other end of which is supported on the bottom of the tunnel (4).

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