Inclined strut fixing structure and method for mine concrete closed formwork

Abstract

The invention discloses an inclined strut fixing structure and method of a mine concrete closed formwork, the inclined strut fixing structure of the mine concrete closed formwork comprises a pull rod, a base, a formwork assembly and an inclined supporting piece, the pull rod is perpendicular to a brick wall and laid on a roadway bottom plate, the pull rod clamps and fixes the brick wall to be connected with the base, the base fixes the inclined supporting piece, and the inclined supporting piece supports the formwork assembly. A concrete wall is formed between the formwork assembly and the brick wall through pouring. The pull rod is pre-embedded in the brick wall and connected with the base, drilling-free inclined support fixing is achieved, the risks of drilling operation and temporary electricity utilization of the bottom plate are eliminated, the brick wall clamps and fixes the pull rod, the inclined support piece directly supports the formwork assembly, the stability of a formwork during concrete wall pouring is ensured, the base can be detached and recycled through the movable connection design, and the construction cost is reduced. And after recovery, the roadway bottom plate has no exposed ground anchor bolt, and construction convenience, environment-friendly economy and safety are achieved at the same time.

Description

Technical Field

[0001] This invention relates to the field of underground construction fixing technology, specifically to the diagonal bracing fixing structure and fixing method of mine concrete sealed formwork. Background Technology

[0002] Coal mines require extensive sealing construction, especially in roadways connecting to goaf areas. These roadways need to be constructed with sealing walls that are pressure-resistant, leak-proof, and waterproof. Ordinary brick walls are easily damaged by mine pressure, especially in ultra-high roadways where the pressure is more significant. Therefore, concrete sealing structures are commonly used.

[0003] Due to construction limitations, work can only be carried out from one side of the non-goaf area. A double-layer structure of "brick enclosure + concrete enclosure" is typically used—the concrete wall enclosure requires formwork erection first. The brick wall near the goaf area serves as the inner formwork for the concrete wall, while single-sided formwork is required on the outside of the concrete wall, using several diagonal supports to hold the formwork in place. In existing technology, fixing the diagonal supports requires installing bases on the roadway floor to secure them. Installing the bases requires drilling holes in the roadway floor for anchor bolts, which relies on temporary power. The concrete enclosure construction is a single temporary work point, and the location is close to the goaf, posing a risk of gas outbursts. Working with electricity in confined spaces presents significant safety hazards. To meet the requirements for heavy mining equipment, the concrete floor of underground roadways typically has high strength, making drilling difficult, time-consuming, and labor-intensive. Frequent drilling may also weaken the floor structure, affecting construction efficiency and safety. This invention proposes a new solution to these problems. Summary of the Invention

[0004] In order to overcome at least one of the above-mentioned disadvantages, the present invention provides a diagonal bracing fixing structure and fixing method for mine concrete sealed formwork.

[0005] The objective of this invention can be achieved by adopting the following technical solution: The first aspect of this application provides a diagonal bracing fixing structure for a sealed concrete formwork in a mine, comprising: A tie rod is laid on the tunnel floor and perpendicular to the brick wall, with one end of the tie rod connected to the brick wall; A base is laid on the tunnel floor and is arranged along the extension direction of the tie rod, and the other end of the tie rod is connected to the base; A template assembly, wherein a reserved space for pouring concrete is formed between the template assembly and the brick wall, and a concrete wall is formed after concrete is poured in the reserved space. An inclined support member, one end of which is connected to the base and the other end of which is connected to the template assembly, is used to form an inclined support for the template assembly.

[0006] In one possible implementation, the template component includes: The template body is arranged parallel to the brick wall and perpendicular to the tunnel floor slab; The main beam is arranged parallel to the main body of the template and is located on the side of the template body away from the brick wall; A plurality of the crossbeams are spaced apart from top to bottom between the template body and the main beam, and the crossbeams are perpendicular to the template body.

[0007] In one possible implementation, one end of the pull rod is provided with a T-shaped end to be secured to the brick wall, the other end of the pull rod is provided with a pin hole, one end of the base is provided with a pin lug hole, and the pull rod is connected to the base by inserting a pin into the pin hole and the pin lug hole.

[0008] In one possible implementation, the length of the tie rod is greater than the sum of the thicknesses of the brick wall, the concrete wall, and the template assembly, and the pin hole is located on the outside of the template assembly.

[0009] In one possible implementation, the tie rod is a threaded steel bar with a diameter not less than φ22; and / or, The length of the pull rod extending beyond the template assembly is within 80mm-120mm.

[0010] In one possible implementation, the base is made of channel steel with the slot facing upward. Several connecting ribs are spaced apart along the length of the slot. The legs of the inclined support members are connected to the connecting ribs. The lengths of the inclined support members are different, so that the support points of the inclined support members and the template assembly are arranged at intervals from top to bottom.

[0011] In one possible implementation, a limiting rod is further included, the limiting rod being perpendicular to the base, and several bases being fixed to the limiting rod by a locking member, the limiting rod being a square steel tube, and the locking member being adapted to the base.

[0012] In one possible implementation, the tie rod is located at the brick joint of the brick wall, and a base brick is provided between the template assembly and the tunnel floor slab. The tie rod is located at the brick joint of the base brick and is used to level the template assembly set on the upper surface of the base brick.

[0013] In one possible implementation, the tunnel roof slab is also included, wherein the tops of the brick wall, the concrete wall, and the formwork assembly are all flush with the lower surface of the tunnel roof slab.

[0014] A second aspect of this application provides a fixing method for the diagonal bracing fixing structure of any of the mine concrete sealed formwork described in the first aspect, the fixing method comprising the following steps: Before building the brick wall, the tie rods are laid along the bottom plate of the tunnel, with the T-shaped ends embedded in the brick wall and the pin holes extending to the outside of the template assembly. A base is laid on the outside of the template assembly and connected to the tie rod by a pin. Install limit rods and lock all bases in place using locking mechanisms; The legs of the inclined support are fixed to the connecting ribs of the base to complete the support of the template assembly.

[0015] The beneficial technical effects of this invention are as follows: According to the present disclosure, the inclined support fixing structure of the mine concrete sealed formwork includes a tie rod, a base, a formwork assembly, and an inclined support component. The tie rod is pre-embedded in the brick wall and connected to the base, which eliminates the need for traditional drilling operations on the roadway floor to fix the base and thus ensure the stability of the inclined support. This reduces the construction difficulty and eliminates the risk of temporary underground power supply. At the same time, the brick wall's clamping effect on the tie rod and the direct support between the inclined support component and the formwork assembly ensure the overall stability of the formwork during concrete wall pouring. The base is recyclable through a flexible connection, and there are no exposed ground anchor bolts on the roadway floor after recycling, avoiding damage to personnel from exposed parts. It combines construction convenience, environmental friendliness, economy, and safety. Attached Figure Description

[0016] The following are given by way of example and without limitation in the accompanying drawings: Figure 1 A cross-sectional view of the overall structure of an embodiment of the present invention is shown; Figure 2 A top view of the overall structure of an embodiment of the present invention is shown.

[0017] In the diagram: 1. Tie rod; 2. T-shaped end; 3. Pin hole; 4. Base; 5. Limiting rod; 6. Connecting bar; 7. Formwork body; 8. Crossbeam; 9. Main beam; 10. Concrete wall; 11. Brick wall; 12. Tunnel roof; 13. Tunnel floor; 14. Base brick; 15. Diagonal support; 16. Clamping piece. Detailed Implementation

[0018] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to enable those skilled in the art to understand and clarify the technical solution of the present invention more clearly, the embodiments described below are not limited thereto. The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0019] The first aspect of this application, as Figure 1 and Figure 2As shown, a diagonal bracing structure for a sealed concrete formwork in a mine is provided, including a tie rod 1, a base 4, a formwork assembly, and a diagonal support 15. The tie rod 1 is laid on the roadway floor 13 and perpendicular to the brick wall 11, with one end of the tie rod 1 connected to the brick wall 11. The base 4 is laid on the roadway floor 13 and is set along the extension direction of the tie rod 1, with the other end of the tie rod 1 connected to the base 4. A reserved space for pouring concrete is formed between the formwork assembly and the brick wall 11, and after concrete is poured in the reserved space, a concrete wall 10 is formed. One end of the diagonal support 15 is connected to the base 4, and the other end of the diagonal support 15 is connected to the formwork assembly to form diagonal support for the formwork assembly.

[0020] The inclined bracing fixing structure for the sealed concrete formwork in this embodiment includes a tie rod 1, a base 4, a formwork assembly, and an inclined support 15. The tie rod 1 is pre-embedded in the brick wall 11 and connected to the base 4, which eliminates the need for drilling into the tunnel floor 13 in the traditional way, thus ensuring the stability of the inclined support. This reduces the construction difficulty and eliminates the risk of temporary underground power supply. At the same time, the brick wall 11 secures the tie rod 1, and the direct support between the inclined support 15 and the formwork assembly ensures the overall stability of the formwork during the pouring of the concrete wall 10. The base 4 is recyclable through a flexible connection, and there are no exposed ground anchor bolts on the tunnel floor 13 after recycling, avoiding damage to personnel or passing equipment caused by exposed parts. It combines construction convenience, environmental friendliness, economy, and safety, and is especially suitable for single-sided formwork scenarios in confined spaces.

[0021] In one possible implementation, such as Figure 1 As shown, the template assembly includes a template body 7, a main beam 9, and a crossbeam 8. The template body 7 is arranged parallel to the brick wall 11 and perpendicular to the tunnel floor 13. The main beam 9 is arranged parallel to the template body 7 and is located on the side of the template body 7 away from the brick wall 11. Several crossbeams 8 are arranged at intervals from top to bottom between the template body 7 and the main beam 9, and the crossbeams 8 are perpendicular to the template body 7.

[0022] The formwork body 7 and the brick wall 11 are set parallel to form a regular pouring interface. The main beam 9 serves as a back rib to enhance the overall bending resistance. The intermittently distributed crossbeams 8 connect the formwork body 7 and the main beam 9 vertically to form a grid-like stress system, effectively dispersing the lateral pressure of the concrete. The formwork assembly formed by the combination of the three ensures the flatness of the concrete wall 10 pouring surface and prevents the formwork from deforming through the hierarchical constraint of the main beam 9 and crossbeam 8. At the same time, it facilitates rapid assembly and disassembly underground, significantly improving construction efficiency and forming quality.

[0023] In one possible implementation, such as Figure 1 and Figure 2As shown, one end of the pull rod 1 is provided with a T-shaped end 2 to be fixed to the brick wall 11, and the other end of the pull rod 1 is provided with a pin hole 3. One end of the base 4 is provided with a pin ear hole. The pull rod 1 is connected to the base 4 by inserting a pin into the pin hole 3 and the pin ear hole.

[0024] Among them, the T-shaped end 2 is embedded with brick wall 11 to form an anchor point, and the pin connection pin hole 3 and pin ear hole realize the movable connection between the tie rod 1 and the base 4, avoiding cumbersome welding operations. The shear resistance of the pin shaft ensures effective load transfer. The overall structure is easy to disassemble and assemble, which not only meets the needs of frequent formwork support in the well, but also improves the rigidity of the node through mechanical connection, providing a stable force foundation for the inclined support system.

[0025] In one possible implementation, such as Figure 1 As shown, the length of tie rod 1 is greater than the sum of the thicknesses of brick wall 11, concrete wall 10 and formwork assembly, and pin hole 3 is located on the outside of formwork assembly.

[0026] When the length of the tie rod 1 exceeds the total thickness of the brick wall 11, the concrete wall 10 and the formwork assembly, its exposed part can be installed with a pin hole 3 for connecting the base 4. The arrangement of the pin hole 3 on the external formwork assembly not only facilitates the construction personnel to quickly position the pin, but also transfers the stress point to the outside of the formwork system through the external node design, effectively reducing the direct impact of the concrete side pressure on the connection part.

[0027] The length of the tie rod 1 extending out of the template assembly is within 80mm-120mm. This provides sufficient space for the pin operation, facilitating workers to quickly install and disassemble the connectors, while avoiding excessively long extensions that could obstruct passage or cause safety hazards. This range can effectively accommodate minor displacements of the template assembly, ensuring a stable connection between the tie rod 1 and the base 4 during the pouring process. This satisfies both the construction efficiency requirements and the reliability of the support system.

[0028] Among them, tie rod 1 is a threaded steel bar with a diameter of not less than φ22, which ensures sufficient tensile bearing capacity and can effectively resist the lateral pressure during concrete pouring. Its standardized size facilitates rapid material sourcing and installation in the well, taking into account both structural safety and construction convenience.

[0029] In one possible implementation, such as Figure 1 and Figure 2 As shown, the base 4 is made of channel steel with the groove facing upward. Several connecting ribs 6 are arranged at intervals along the length of the groove. The legs of the inclined support 15 are connected to the connecting ribs 6. The lengths of the inclined support 15 are different so that the support points of the inclined support 15 and the template assembly are arranged at intervals from top to bottom.

[0030] The upward-facing grooves facilitate the installation of connecting bars 6, enabling rapid positioning of the inclined support legs. The connecting bars 6, spaced apart along the length, form a multi-point anchoring system, allowing inclined support members 15 of different lengths to be staggered from top to bottom. This disperses the lateral pressure of the concrete to different height areas of the formwork assembly, avoiding local deformation caused by concentrated stress. The overall structure improves construction efficiency and structural stability through the differentiated distribution of support points.

[0031] Among them, the diameter of the connecting bar 6 is generally not less than 14mm, and the connecting bar 6 is a steel bar welded on the groove. The welded connection between the connecting bar 6 and the channel steel base 4 forms a rigid node. The groove-facing arrangement facilitates the positioning and welding of the steel bar.

[0032] In one possible implementation, such as Figure 1 and Figure 2 As shown, the inclined bracing fixing structure of the mine concrete sealed formwork also includes a limiting rod 5. The limiting rod 5 is perpendicular to the base 4. Several bases 4 are fixed to the limiting rod 5 by a snap-fit ​​part 16. The limiting rod 5 is a square steel pipe, and the snap-fit ​​part 16 is compatible with the base 4.

[0033] The limiting rod 5 forms a longitudinal constraint axis through the vertical base 4. The fitting connection between the locking component 16 and the base 4 enables quick positioning and fixation. The locking component 16 includes a claw or a block, which enables a tight fit between the base 4 and the limiting rod 5. The rigid locking of the claw or block can effectively prevent the base 4 from lateral displacement during concrete pouring. The bending resistance of the square steel pipe enhances the stability of the overall support system and prevents the inclined support component 15 from loosening due to the lateral sliding of the base 4.

[0034] In one possible implementation, such as Figure 1 and Figure 2 As shown, the tie rod 1 is located at the brick joint of the brick wall 11, and a base brick 14 is provided between the template assembly and the tunnel floor 13. The tie rod 1 is located at the brick joint of the base brick 14 and is used to level the template assembly set on the upper surface of the base brick 14.

[0035] In this process, a layer of base bricks 14 is laid flat on the outside of the template component, and leveled with high-grade mortar. Tie rod 1 passes through the brick joints. Then, brick wall 11 is built up to the tunnel roof slab 12. Tie rod 1 is precisely positioned at the brick joints of brick wall 11 and base bricks 14. Through the rigid support of the bricks, the impact of uneven tunnel floor slab 13 on the template component is effectively eliminated. The tunnel floor slab 13 at the point where tie rod 1 passes through the template component is leveled to ensure the smooth installation of the template component.

[0036] The fitting design between the tie rod 1 and the brick joint not only enhances the reliability of the anchorage, but also disperses the load on the formwork through the transition effect of the base brick 14, avoiding local stress concentration. The whole structure forms a stable leveling-support system, which significantly improves the construction quality and structural safety of the concrete wall 10.

[0037] In one possible implementation, such as Figure 1 As shown, the inclined bracing fixing structure of the mine concrete sealed formwork also includes the roadway roof 12, and the tops of the brick wall 11, concrete wall 10 and formwork assembly are all flush with the lower surface of the roadway roof 12.

[0038] By aligning the tops of the brick wall 11, concrete wall 10, and formwork components with the lower surface of the tunnel roof slab 12, a seamless and airtight interface is formed. This eliminates the weak sealing links caused by elevation errors in traditional construction. The rigid constraint of the tunnel roof slab 12 enhances the stability of the overall structure, simplifies the formwork component positioning process, and utilizes the roof slab as a natural reference surface to ensure the verticality and flatness of the construction of multiple walls, significantly improving the forming quality and airtightness of the concrete wall 10.

[0039] The second aspect of this application, as Figure 1 and Figure 2 As shown, a fixing method is provided, applicable to the diagonal bracing fixing structure of any type of mine concrete sealed formwork in the first aspect. The fixing method includes the following steps: Before building the brick wall 11, the tie rod 1 is laid along the bottom plate 13 of the tunnel, the T-shaped end 2 is embedded in the brick wall 11, and the pin hole 3 extends to the outside of the template assembly. A base 4 is laid on the outside of the template assembly and connected to the tie rod 1 by a pin. Install the limit rod 5 and lock all bases 4 using the locking piece 16; The legs of the inclined support 15 are fixed to the connecting ribs 6 of the base 4 to complete the support of the template assembly.

[0040] The inclined bracing fixing method for mine concrete sealed formwork provided in this embodiment achieves rapid installation without drilling through the linkage design of pre-embedded tie rod 1 and pin connection of base 4. The cooperation between limit rod 5 and locking part 16 ensures the overall positioning accuracy of base 4 group. The fixing of inclined support part 15 and connecting bar 6 forms a graded force system. The modular operation significantly improves construction efficiency. At the same time, the mechanical connection method of each link ensures the overall rigidity and stability of the support system. It is especially suitable for concrete wall 10 pouring operation in confined space underground.

[0041] Furthermore, the specific steps of the fixation method include: S1. Install tie rod 1 at the bottom of brick wall 11: Before building brick wall 11, first lay a set of tie rods 1 vertically on the wall surface and along the bottom brick joint on the tunnel floor 13. The position of tie rod 1 is on the same line as the base 4. Tie rod 1 is generally made of threaded steel with a diameter of not less than φ22. The length should be slightly greater than the sum of the thickness of brick wall 11 + concrete wall 10 + formwork components (formwork body 7, crossbeam 8 and main beam 9). The length of the tie rod extending beyond the main beam 9 is generally about 100mm to facilitate connection with the base 4. One end of tie rod 1 is a T-shaped head to hold brick wall 11, and the other end has a pin hole 3 to connect with the end of the base 4. S2. Install tie rod 1 by bricklaying at the template: Level the bottom plate 13 of the tunnel where tie rod 1 passes through the template with the base brick 14 to ensure the template is installed smoothly. Lay a layer of base brick 14 on the outside of the position close to the template body 7 and level it with high grade mortar. Tie rod 1 also passes through the brick joint. Then build brick wall 11 to the top plate 12 of the tunnel. S3. Laying the base 4: The base 4 is generally made of 10# channel steel. There are pin ears at the joint with the tie rod 1. When laying the channel steel, the groove faces upward. A steel bar is welded at each fixing point of the inclined support 15 along the upper edge of the groove. The diameter of the steel bar is generally not less than 14mm. Align the pin ears of the base 4 with the pin holes 3 on the tie rod 1 and insert the pins. The limiting rod 5 is generally made of square steel tube. Claws or blocks are set at equal intervals on the square steel tube at the intersection with each base 4. The limiting rod 5 is installed horizontally on the base 4 and the base 4 is fixed with the claws to prevent the inclined support 15 from loosening due to the horizontal sliding of the base 4. S4. Installing the formwork: It generally takes about 24 hours to complete the brick wall construction and plastering. At this time, the layer of brick mortar has a high strength and can be immediately connected to install the formwork components. The diagonal supports are then connected to ensure that the formwork is installed firmly and securely.

[0042] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0046] In view of the detailed description above, these and other changes can be made to these embodiments, and this written description includes embodiments of the best mode that disclose the invention. The patent scope of the invention is defined by the claims, which are not limited by this disclosure. The scope of protection of the invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the invention disclosed herein, based on the technical solutions and concepts of the invention, are within the scope of protection of the invention.

Claims

1. A diagonal bracing fixing structure for a sealed concrete formwork in a mine, characterized in that, include: Tie rod (1), the tie rod (1) is laid on the tunnel floor (13) and perpendicular to the brick wall (11), one end of the tie rod (1) is connected to the brick wall (11); The base (4) is laid on the tunnel floor plate (13) and is set along the extension direction of the tie rod (1). The other end of the tie rod (1) is connected to the base (4). A template assembly is provided, and a reserved space for pouring concrete is formed between the template assembly and the brick wall (11). After the concrete is poured in the reserved space, a concrete wall (10) is formed. An inclined support member (15) is provided, one end of which is connected to the base (4) and the other end of which is connected to the template assembly, for forming an inclined support for the template assembly.

2. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 1, characterized in that, The template component includes: The template body (7) is arranged parallel to the brick wall (11) and perpendicular to the tunnel floor slab (13). The main beam (9) is arranged parallel to the template body (7) and is located on the side of the template body (7) away from the brick wall (11); A plurality of the crossbeams (8) are spaced apart from top to bottom between the template body (7) and the main beam (9), and the crossbeams (8) are perpendicular to the template body (7).

3. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 1, characterized in that, One end of the pull rod (1) is provided with a T-shaped end (2) to be fixed to the brick wall (11), and the other end of the pull rod (1) is provided with a pin hole (3). One end of the base (4) is provided with a pin ear hole. The pull rod (1) is connected to the base (4) by inserting a pin into the pin hole (3) and the pin ear hole.

4. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 3, characterized in that, The length of the tie rod (1) is greater than the sum of the thicknesses of the brick wall (11), the concrete wall (10), and the template assembly, and the pin hole (3) is located on the outside of the template assembly.

5. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 1, characterized in that, The tie rod (1) is a threaded steel bar with a diameter not less than φ22; and / or, The length of the pull rod (1) extending out of the template assembly is within 80mm-120mm.

6. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 1, characterized in that, The base (4) is made of channel steel with the slot facing upward. Several connecting ribs (6) are spaced apart along the length of the slot. The legs of the inclined support (15) are connected to the connecting ribs (6). The lengths of the inclined support (15) are different so that the support points of the inclined support (15) and the template assembly are arranged at intervals from top to bottom.

7. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 1, characterized in that, It also includes a limiting rod (5), which is perpendicular to the base (4). Several bases (4) are fixed to the limiting rod (5) by a locking member (16). The limiting rod (5) is a square steel tube, and the locking member (16) is adapted to the base (4).

8. The inclined bracing fixing structure for the sealed concrete formwork in mines according to claim 1, characterized in that, The tie rod (1) is located at the brick joint of the brick wall (11). A base brick (14) is provided between the template assembly and the tunnel floor slab (13). The tie rod (1) is located at the brick joint of the base brick (14) and is used to level the template assembly set on the upper surface of the base brick (14).

9. The diagonal bracing fixing structure for a mine concrete sealed formwork according to claim 1, characterized in that, It also includes a tunnel roof slab (12), the tops of the brick wall (11), the concrete wall (10) and the template assembly are all flush with the lower surface of the tunnel roof slab (12).

10. A fixing method, characterized in that, The diagonal bracing fixing structure applied to the mine concrete sealed formwork as described in any one of claims 1-9, wherein the fixing method includes the following steps: Before building the brick wall, the tie rods are laid along the bottom plate of the tunnel, with the T-shaped ends embedded in the brick wall and the pin holes extending to the outside of the template assembly. A base is laid on the outside of the template assembly and connected to the tie rod by a pin. Install limit rods and lock all bases in place using locking mechanisms; The legs of the inclined support are fixed to the connecting ribs of the base to complete the support of the template assembly.

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