A quick installation method for heavy-duty mine doors

Abstract

The invention discloses a method for quickly installing a heavy-duty door in a mine, and relates to the field of coal mines. The method comprises the following steps: S1: firstly, a groove is cut on the top of the tunnel and a top anchor rod is constructed; S2: the bottom of the tunnel is laid, a bottom anchor rod is inserted at the bottom of the laid bottom, and concrete is poured; S3: the bottom cross beam is laid and fixed by the bottom anchor rod; S4: the top cross beam is placed in the groove and fixed by the top anchor rod; S5: the heavy-duty door is placed vertically and fixed with the top cross beam and the bottom cross beam respectively; S6: the reinforcement is constructed, the reinforcement is welded and fixed with the heavy-duty door and the anchor rod, and the rest of the reinforcement is tied with iron wire; S7: the template is supported before and after the reinforcement, and concrete is poured, vibrated and maintained; S8: the heavy-duty door is waterproofed by concrete bottoming and tunnel re-spraying. The invention has the advantages that no truss is required during the construction process, the working space is not limited, and multiple people can be constructed in parallel, which can greatly improve the installation efficiency.

Description

Technical Field

[0001] The invention relates to the field of coal mines, and in particular to a method for quickly installing a heavy-duty door of a mine. Background Art

[0002] As coal mining continues to expand, mining conditions are becoming more and more complex. In order to ensure the safety and reliability of the production system and the risk avoidance requirements, various safe and functional chambers need to be built. According to relevant requirements and specifications, various closed doors need to be installed in the main horizontal pump room and refuge chamber. However, the underground tunnel space is relatively small, especially the tunnels that need to be installed with closed doors. In order to ensure sufficient disaster resistance, they are generally arranged in narrower tunnels.

[0003] The low height and insufficient width of the laneway make it very inconvenient to install some heavy metal doors. It is necessary to use trusses to fix the metal doors in the narrow lane before other work can be carried out. Truss fixation makes the construction space further narrow, which is not conducive to safety; and it is particularly difficult to control the balance of heavy metal doors. If you are not careful, the door frame will be skewed or crooked, and it is easy to cause problems such as the door not closing tightly or not installing firmly.

[0004] The traditional installation method is to first erect the metal door, then use the truss to initially fix the metal door, further check the balance, and then fix it firmly. Then connect the metal door through the reinforcement, and finally construct the closed wall. Then use the truss to initially fix the metal door, further check the balance, and then fix it firmly. Then connect the metal door through the reinforcement, and finally construct the closed wall. However, this method has obvious disadvantages, mainly because the truss-fixed metal door in the narrow alley takes up a lot of space, and it is difficult to find the balance of the door frame during the later installation and fixing. The narrow space leads to low construction efficiency and is not conducive to safety. Summary of the invention

[0005] In view of the above problems, the present invention provides a method for quickly installing a heavy-duty door in a mine.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A method for quickly installing a heavy-duty door in a mine comprises the following steps: S1: firstly, grooves are cut on both sides of the top of the tunnel, and top anchor rods are constructed after the grooves are cut; S2: floating gangue at the bottom of the tunnel is cleaned, and the bottom is laid after the bottom is cleaned to a hard bottom, and the bottom anchor rods are constructed after the bottom is laid and the bottom is poured with concrete; S3: after the pouring is completed, a bottom crossbeam is laid on the foundation, and the bottom crossbeam is leveled by a spirit level and fixed by a bottom anchor rod; S4: the height of the heavy-duty door is measured, and the top crossbeam is constructed at the height of the heavy-duty door above the bottom crossbeam, and the top crossbeam is placed in the groove and fixed by the top anchor rod, and the level is used at the same time; S5: the heavy-duty door is placed vertically between the top crossbeam and the bottom crossbeam, and the top outer claw of the heavy-duty door is fixed to the top crossbeam, and the bottom outer claw is fixed to the bottom crossbeam, and a plurality of supporting anchor rods are inserted into the top of the tunnel;

[0008] S6: Construct reinforcement. The reinforcement is welded and fixed to the outer claws, top anchor rods and supporting anchor rods of the heavy door, and the remaining reinforcement is tied with wire; S7: Set up formwork before and after the reinforcement, and use concrete for pouring, vibration and maintenance; S8: After the concrete in the supporting formwork is completely solidified, the front and rear sides of the heavy door are waterproofed by concrete base coating and tunnel re-spraying.

[0009] Furthermore, the depth of the trench is 500mm and the width is 600mm. After the trench is completed, the top anchor rod is inserted into the tunnel along the oblique upward square from the bottom of the trench on the left and right sides, and the top anchor rod is exposed for 800mm.

[0010] Furthermore, the undercover has a depth of 200mm, a length of 3m, and a width of 400mm. After the undercover is completed, the bottom anchor rod is vertically inserted at 800mm from the center line on both sides of the bottom of the undercover, and the bottom anchor rod is exposed 350mm.

[0011] Furthermore, C30 concrete was used to pour the undercover, and the top of the C30 concrete after pouring was 100 mm higher than the bottom of the tunnel.

[0012] Furthermore, both the bottom crossbeam and the top crossbeam are made of 12# I-beam, the bottom crossbeam is 2.6m long, the top crossbeam is 4m long, the top crossbeam is 2.25m away from the bottom crossbeam, and both ends of the top crossbeam extend into the groove 500mm each.

[0013] Furthermore, C40 concrete is poured between the supporting formworks.

[0014] Furthermore, when carrying out waterproofing treatment, C20 concrete is used for base plastering and tunnel re-spraying within 5m on both sides of the heavy door, with a thickness of not less than 200mm.

[0015] The beneficial effects of the present invention are: the heavy metal door can be quickly installed by using the top crossbeam and the bottom crossbeam in a frame structure. During the construction process, no truss is needed to fix the heavy door, so the working space is not limited, and multiple people can work in parallel without affecting each other. The use of the top crossbeam, the bottom crossbeam and a plurality of anchor rods can enhance the disaster resistance of the heavy door, can withstand greater impact, and has better fire and water resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the structural principle of an embodiment of the present invention.

[0017] Figure 2 Shown is a schematic diagram of the installation of the top beam and the bottom beam.

[0018] Figure 3 Shown are schematic diagrams of the installation of a heavy-duty door with a top crossbeam and a bottom crossbeam. DETAILED DESCRIPTION

[0019] The invention discloses a method for quickly installing a heavy-duty door of a mine, and relates to the field of coal mines. The steps of an implementation mode of the invention are described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 2 As shown, firstly, grooves are cut on the left and right sides of the top of the tunnel 1, with a depth of 500mm, a height of 160mm and a width of 600mm. After the grooves are cut, the top anchor rods 3 are inserted into the tunnel 1 from the bottom of the grooves on the left and right sides respectively along the oblique upward direction. The specification of the top anchor rods 3 is φ20*2400mm. After the top anchor rods 3 are inserted into the tunnel 1, they are exposed 800mm. The floating gangue at the bottom of the tunnel 1 is cleaned, and after cleaning to the hard bottom, the bottom is laid. The depth of the bottom is 200mm, the length is 3m and the width is 400mm. After the bottom is laid, the bottom anchor rods 5 are inserted vertically at a position 800mm away from the center line on both sides of the bottom of the bottom. The specification of the bottom anchor rods 5 is φ20*2400mm. After the bottom anchor rods 5 are inserted into the bottom of the bottom, they are exposed 350mm. Then, C30 concrete was used to pour the bottom. After the pouring, the top of C30 was 100mm higher than the bottom of the tunnel 1. After the pouring of C30 concrete, a 2.6m long bottom beam 4 was laid on its foundation. The bottom beam 4 was made of 12# I-beam. When laying, the bottom beam 4 was leveled with a spirit level and fixed with bottom anchor rods 5. The top beam 2 was constructed 2.25m above the bottom beam 4. The top beam 2 was made of 12# I-beam. Both ends of the top beam 2 were extended into the groove 500mm each and fixed with top anchor rods 3. The spirit level was used to level the bottom beam 4. Figure 3As shown, the heavy door 6 is a metal door, which is placed vertically between the top crossbeam 2 and the bottom crossbeam 4, and the top outer claw and the bottom outer claw of the heavy door 6 are welded and fixed to the top crossbeam 2 and the bottom crossbeam 4 respectively, and then a number of support anchors are inserted into the top of the tunnel 1. Figure 1 As shown, the reinforcement 7 is constructed, and the reinforcement 7 is welded and fixed to the outer claw of the heavy door 6, the top anchor rod 3 and the supporting anchor rod. The remaining reinforcements 7 are tied with 14# iron wire. Then, the templates are supported on the front and rear sides of the reinforcement 7, and C40 concrete is used for pouring, vibration and curing. After the C40 concrete in the supporting template is completely solidified, the front and rear sides of the heavy door are waterproofed within a range of 5m. The waterproof treatment uses C20 concrete for bottom plastering and re-spraying of the tunnel 1. The thickness of C20 concrete is not less than 200mm.

[0021] The present invention uses a top cross beam 2 and a bottom cross beam 4 in a frame structure to achieve rapid installation of a heavy metal door. During the construction process, no trusses are required to fix the heavy door 6, so the working space is not limited, and multiple people can work in parallel without affecting each other. The use of the top cross beam 2, the bottom cross beam 4 and a plurality of anchor rods can enhance the disaster resistance of the heavy door 6, can withstand larger impacts, and has better fire and water resistance.

[0022] It should be noted that, in the present invention, unless otherwise clearly stipulated and limited, the terms "install", "connect", "fix" and the like should be understood in a broad sense; the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "top" and "bottom" are based on the directions or positional relationships shown in the accompanying drawings, and are relational words determined only for the convenience of describing the structural relationships of the various components of the present invention. They do not specifically refer to any component in the present invention and should not be understood as limitations on the present invention.

[0023] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A method for quickly installing a heavy-duty door in a mine, characterized in that: The following steps are included: S1: First, grooves are cut on both sides of the top of the tunnel (1), and after the grooves are cut, top anchors (3) are constructed; S2: Clean the floating gangue at the bottom of the tunnel (1), and then lay the bottom after cleaning to the hard bottom. After the bottom is laid, construct the bottom anchor (5) and pour the bottom with concrete; S3: After the pouring is completed, a bottom cross beam (4) is laid on the foundation, and the bottom cross beam (4) is leveled using a level and fixed by a bottom anchor rod (5); S4: measuring the height of the heavy door (6), constructing the top cross beam (2) at the height of the heavy door (6) above the bottom cross beam (4), placing the top cross beam (2) into the cutout and fixing it with the top anchor rod (3), and leveling it with a spirit level; S5: vertically placing the heavy door (6) between the top crossbeam (2) and the bottom crossbeam (4), fixing the top outer claw of the heavy door (6) to the top crossbeam (2), fixing the bottom outer claw to the bottom crossbeam (4), and inserting a plurality of support anchor rods into the top of the tunnel (1); S6: construct reinforcement (7), the reinforcement (7) is welded and fixed to the outer claw of the heavy door (6), the top anchor rod (3) and the supporting anchor rod, and the remaining reinforcement (7) is tied with iron wire; S7: supporting formwork before and after the reinforcement (7), pouring, vibrating and curing concrete; S8: After the concrete in the supporting formwork is completely solidified, the front and rear sides of the heavy door (6) are waterproofed by applying concrete to the bottom and spraying the tunnel (1).

2. A method for rapid installation of a heavy-duty mine door according to claim 1, characterized in that: The depth of the trench is 500 mm and the width is 600 mm. After the trench is completed, the top anchor rod (3) is inserted into the tunnel (1) along the oblique upward square from the bottom of the trench on the left and right sides, and the top anchor rod (3) is exposed 800 mm.

3. A method for rapid installation of a heavy-duty mine door according to claim 1, characterized in that: The depth of the undercover is 200mm, the length is 3m, and the width is 400mm. After the undercover is completed, the bottom anchor rod (5) is vertically inserted at the position 800mm from the center line on the left and right sides of the bottom of the undercover, and the bottom anchor rod (5) is exposed 350mm.

4. A method for rapid installation of a heavy-duty mine door according to claim 3, characterized in that: C30 concrete is used to pour the bottom, and the top of the C30 concrete after pouring is 100 mm higher than the bottom of the tunnel (1).

5. The rapid installation method of a heavy-duty mine door according to claim 1 is characterized in that: The bottom cross beam (4) and the top cross beam (2) are both made of 12# I-beam, the bottom cross beam (4) is 2.6m long, the top cross beam (2) is 4m long, the top cross beam (2) is 2.25m away from the bottom cross beam (4), and both ends of the top cross beam (2) extend into the cutout by 500mm each.

6. A method for rapid installation of a heavy-duty mine door according to claim 1, characterized in that: C40 concrete is poured between the supporting formwork.

7. A method for rapid installation of a heavy-duty mine door according to claim 1, characterized in that: When waterproofing, C20 concrete is used to coat the bottom of the heavy door (6) within a range of 5m on both sides, front and back, and to spray the tunnel (1) with a thickness of not less than 200mm.

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