Quick assembly type arch frame and assembly method thereof

Abstract

The invention discloses a quick assembly type arch frame and an assembly method thereof. The assembly type arch frame comprises an arch crown component, a stand column component and a lateral connecting rod, a first inner gear is arranged at one end of the arch crown component, and a first outer gear is arranged at the other end of the arch crown component. A second inner gear or a second outer gear is arranged at the upper end of the stand column component; the modulus, the pressure angle, the tooth number and the tooth depth of the first inner gear, the first outer gear, the second inner gear or the second outer gear are the same; the at least two stand column components are vertically installed, and the second inner gears or the second outer gears of the stand column components are internally meshed with the first outer gears or the first inner gears of the arch crown components. The first inner gears and the first outer gears of the adjacent vault components are internally meshed. The stand column components and the arch crown components located on the same section of the cavern form an arch frame, and the adjacent arch frames are connected and fixed through lateral connecting rods. The attaching area of the supporting structure and the surface of the surrounding rock can be increased, and the supporting efficiency and the overall stability are remarkably improved.

Description

Technical Field

[0001] The invention relates to an arch frame for tunnel engineering support, and in particular to a quick-assembly arch frame and an assembly method thereof. Background Art

[0002] During cavern excavation, fluctuating geological conditions often require significant time for support to ensure the stability of the surrounding rock. Failure to do so can lead to excavation interruptions, significantly impacting project implementation. In recent years, exploration adit construction, a key technical approach for pumped-storage power station exploration, has become a significant constraint on power station construction, with the level of construction technology and progress being key factors. Furthermore, the construction of small-section hydraulic tunnels, such as drainage tunnels, diversion tunnels, and water diversion tunnels, has struggled to achieve substantial improvements in efficiency due to inefficient support in tunnel sections with poor geology.

[0003] Steel arch support is currently the most common method of cavern support. However, the assembly of steel arches uses welding connections, which slows construction, creates a narrow on-site overhead welding space, and makes quality assurance difficult. Furthermore, traditional steel arch supports have poor contact with the cavern surrounding rock, resulting in suboptimal support effectiveness. Furthermore, faced with the highly weathered, unstable, and fractured tunnel sections encountered during cavern excavation, the stability of the surrounding rock between the arches cannot be guaranteed, posing a safety hazard. Bamboo strips and wooden planks are typically placed between the arches for supplemental support, but this approach is difficult to achieve in terms of safety. Furthermore, steel is heavy and difficult to transport.

[0004] Therefore, it is necessary to design a support device that can be quickly spliced and can provide a certain degree of adaptive support for uneven rock walls to address these problems of the steel arch support system, so as to provide reliable and rapid support for the surrounding rock caverns, and can be recycled after use to improve support efficiency and economic benefits. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a quick-assembled arch frame and its assembly method to address the problems existing in the steel arch frame support system, such as the welding process resulting in low construction efficiency and poor quality controllability, insufficient contact with the surrounding rock causing discrete support stiffness, and insufficient safety of temporary reinforcement measures. The support efficiency can be improved by splicing components with adjustable angle connections, effectively increasing the contact area between the support structure and the surrounding rock, enhancing the stability of the support structure, and improving the support efficiency and economic benefits.

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

[0007] A quick-assembly arch frame includes an arch top component, a column component, and a lateral connecting rod. Its structural features are:

[0008] A first internal gear is provided at one end of the arch member, and a first external gear is provided at the other end, and a first connecting hole is provided through the middle of the first external gear;

[0009] The upper end of the column member is provided with a second internal gear or a second external gear, a second connecting hole is provided through the middle of the second external gear, and the lower end of the column member is provided with a base;

[0010] The first internal gear, the first external gear, the second internal gear or the second external gear have the same module, pressure angle, number of teeth, tooth depth and tooth thickness;

[0011] There are at least two column members, which are vertically installed respectively. The second internal gear or the second external gear of the column member is meshed with the first external gear or the first internal gear of the dome member and are fastened together by a fastener passing through the second connecting hole or the first connecting hole;

[0012] There are multiple arch members, and the first internal gears of two adjacent arch members are meshed with the first external gears and are fastened together by fasteners passing through the first connecting holes;

[0013] The column components and the arch components located on the same cross section of the cavern form an arch frame, and two adjacent arch frames are connected and fixed by the lateral connecting rods.

[0014] A further improvement of the above scheme is that connecting pieces are respectively provided on the front and rear surfaces of the arch member and the column member, and arc-shaped slots perpendicular to the cross-section of the cave are respectively provided on the connecting pieces, and connecting slots are respectively provided at both ends of the lateral connecting rod, and a third connecting hole is provided on the connecting slot. The connecting slot of the lateral connecting rod is inserted into the connecting piece, and the lateral connecting rod and the connecting piece are fastened and connected by bolts passing through the third connecting hole and the arc-shaped slot.

[0015] A further improvement to the above scheme is that the arch and column components are made of glass fiber reinforced composite material. Glass fiber reinforced composite material is a lightweight, high-strength engineering plastic. Its most significant feature is its high tensile strength, which provides excellent comprehensive performance that meets the requirements of chamber support. Glass fiber reinforced plastic is also easier to process and more suitable for modular production.

[0016] A further improvement of the above solution is that the base of the column component is provided with a connection port for fixing to the ground.

[0017] A further improvement of the above solution is that the lateral connecting rod is a telescopic rod to flexibly adjust the length of the lateral connecting rod, thereby ensuring that the lateral connecting rod can effectively and flexibly connect different arch frames, effectively improving the integrity of the support structure.

[0018] Based on the same inventive concept, the present invention provides an assembly method of the quick-assembly arch frame, which comprises the following steps:

[0019] a. Install and fix a column component close to the rock wall on one side of the cave;

[0020] b. Connect and install the vault member at the upper end of the column member. During the connection process, first align the upper end of the column member with the connecting end of the vault member, then adjust the angle of the vault member so that the vault member is against the surrounding rock excavation surface, and then push the vault member into the column member;

[0021] c. Install several arch members in sequence. During the installation process, first align the connecting ends of two adjacent arch members, then adjust the angle of the arch member to be installed so that the arch member to be installed is against the surrounding rock excavation surface, and then push the arch member to be installed into the installed arch member;

[0022] d. Install and fix another column component to complete the installation of a single arch frame;

[0023] e. Repeat steps a to d to install multiple arch frames, and use lateral connecting rods to connect multiple arch frames until all arch frame structures are installed.

[0024] By adopting the above method, in the process of supporting the surrounding rock excavation surface, the contact area between the support structure and the surrounding rock excavation surface can be increased, effectively reducing the local overhang or overall overhead phenomenon. This method can make the support structure evenly loaded, effectively avoid the risk of arch deformation or structural failure caused by local concentrated loads or eccentric loads, and ultimately ensure that the support system provides continuous and stable support for the surrounding rock.

[0025] A further improvement of the above solution is that in steps a and d, the column components are fixed to the ground using expansion bolts.

[0026] A further improvement of the above solution is that the column member and the arch member and two adjacent arch members are connected and positioned by internal meshing of an internal gear and an external gear.

[0027] A further improvement to the above scheme is that when the internal gear is connected to the external gear, the internal gear and the external gear are first aligned, and then the angle of the arch member to be installed is rotated so that the arch member to be installed is rotated toward the rock wall side until the arch member is rotated to the angle closest to the rock wall surface, and then the internal gear or external gear on the arch member to be installed is pushed into the external gear or internal gear of the installed member, and then fastened with fasteners.

[0028] The present invention realizes multi-angle adjustable and rapid assembly of arch components through mutually meshing gear structures, and at the same time uses lateral connecting rods to connect and fix adjacent arch frames, which not only improves the support efficiency, but also effectively increases the contact area between the arch frame structure of the present invention and the surrounding rock of the cave, enhances the stability of the support structure, and improves the support efficiency and economic benefits.

[0029] The single arch frame of the present invention is composed of two column components and several arch components. The connection angles of each column component and the arch component, as well as the connection between adjacent arch components, can be freely adjusted and fixed. During installation, the column components and the arch components can be made as close to the surrounding rock as possible. The spliced arch frame structure can adaptively support the surrounding rock to achieve the purpose of stable support. At the same time, the modular design of the arch components, column components, and lateral connecting rods can effectively improve transportation efficiency and reduce transportation costs.

[0030] The arch frame structure of the present invention is set on the inner wall of the cavern and arranged along the extension direction of the cavern. Since the surrounding rock morphology at different sections is different, the shape of each arch frame and the distance between adjacent arch frames are different. In the present invention, each arch frame is connected by the lateral connecting rod. The length of the lateral connecting rod can be adjusted, and the connection angle of the lateral connecting rod can be adjusted by adjusting the fixed position of the arc groove on the connecting piece and the lateral connecting rod connecting groove, so that the lateral connecting rod can flexibly connect each arch frame, so that a spatial truss structure is formed between the arch frames, thereby enhancing the integrity of the support structure.

[0031] The present invention uses the meshing of internal gears and external gears to achieve the connection between the column components and the arch components, as well as the connection between adjacent arch components, so that the angle of the arch components can be flexibly adjusted and fixed according to the rock wall of the cave. The number of arch components can also be flexibly adjusted according to the size of the cave, so that the arch frame can be closely attached to the rock wall, thereby achieving adaptive support for the uneven surrounding rock surface of the cave.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention increases the contact area between the support structure and the complex surrounding rock surface through the adaptively adjustable arch component, effectively solving the problems of uneven contact stress distribution and discrete support stiffness caused by the uneven surrounding rock surface in traditional support structures, significantly improving the support efficiency and enhancing the overall stability of the support system.

[0034] 2. The present invention adopts a modular assembly design. The support system is assembled from standardized prefabricated components through quick connection interfaces, breaking through the technical bottlenecks of low efficiency and difficult quality control in traditional support construction, and significantly improving construction efficiency and quality.

[0035] 3. The components of the present invention use glass fiber reinforced composite materials, which have better physical and mechanical properties than traditional steel materials. They are more suitable as support materials for small-section caverns, reducing the cost of supporting structure preparation and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the rapid assembly arch frame of the present invention;

[0038] Figure 2 is a top view of an embodiment of a quick-assembly arch frame of the present invention;

[0039] Figure 3 It is a three-dimensional structural diagram of the vault component;

[0040] Figure 4 3D structural diagrams of column components, wherein a is a structural diagram of the column component with a second external gear, and b is a structural diagram of the column component with a second internal gear;

[0041] Figure 5 is a schematic diagram of the three-dimensional structure of the lateral connecting rod;

[0042] Figure 6 It is a schematic diagram of the connection method between the connecting piece and the lateral connecting rod.

[0043] In the figure: 1. arch member; 2. column member; 3. lateral connecting rod; 4. gear-shaped slot; 5. first connecting hole; 6. connecting piece; 7. connecting port; 8. threaded screw; 9. first external gear; 10. first internal gear; 11. second external gear; 12. second internal gear; 13. connecting slot; 14. third connecting hole; 15. arc-shaped slot; 16. first mounting base; 17. second connecting hole; 18. second mounting base; 19. first connecting rod; 20. second connecting rod. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0045] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] See also Figure 1 and Figure 2 As shown, an embodiment of the quick-assembly arch frame of the present invention includes an arch top component 1, a column component 2 and a lateral connecting rod 3.

[0048] See also Figure 3 As shown, one end of the arch member 1 is provided with a first external gear 9, and the other end is provided with a first internal gear 10. When the two arch members 1 are connected, the first external gear 9 of one arch member 1 is meshed with the first internal gear 10 of the other arch member 1 to achieve the connection of the two arch members 1.

[0049] To enhance connection stability, a first connection hole 5 is provided in the center of the first external gear 9 to reinforce the fixing member. A first mounting base 16 is provided on the back of the first external gear 9, and the first connection hole 5 extends through the first mounting base 16. After the two dome members 1 are connected through the meshing of the first external gear 9 and the first internal gear 10, bolts passing through the first connection holes 5 are used to securely lock the two dome members 1.

[0050] See also Figure 4As shown, the upper end of the column member 2 is provided with a second internal gear 12 or a second external gear 11. A second connecting hole 17 is provided through the middle of the second external gear 11, and a second mounting base 18 is provided on the back of the second external gear 11. When the column member 2 is connected to the dome member 1, the second internal gear 12 of the column member 2 meshes with the first external gear 9 of the dome member 1 and is fastened with a bolt passing through the first connecting hole 5. Alternatively, the second external gear 11 of the column member 2 meshes with the first internal gear 10 of the dome member 1 and is fastened with a bolt passing through the second connecting hole 17.

[0051] The base of the column member 2 is provided with two connection ports 7 for fixing to the ground. The connection ports 7 are connected to the ground using expansion bolts.

[0052] To ensure connection stability, the first internal gear 10 , the first external gear 9 , the second internal gear 12 or the second external gear 11 have the same module, pressure angle, number of teeth, tooth depth and tooth thickness.

[0053] See also Figure 3 and Figure 4 As shown, the front and rear surfaces of the arch member 1 and the column member 2 are respectively provided with connectors 6 for connecting with the lateral connecting rods 3. The connectors 6 are provided with arc-shaped slots 15 perpendicular to the cross section of the cavern.

[0054] See also Figure 5 、 Figure 6 As shown, the lateral connecting rod 3 includes a first connecting rod 19 and a second connecting rod 20. The first connecting rod 19 and the second connecting rod 20 are connected by a threaded screw 8. The length of the lateral connecting rod 3 can be flexibly adjusted by the threaded screw 8, thereby ensuring that the lateral connecting rod 3 can effectively and flexibly connect different arch frames, effectively improving the integrity of the support structure.

[0055] The lateral connecting rod 3 is provided with connecting slots 13 at both ends, and third connecting holes 14 are provided on both sides of the connecting slots 13 for fixing to the connecting member 6. The connecting member 6 is inserted into the connecting slots 13 of the lateral connecting rod 3, and the lateral connecting rod 3 and the connecting member 6 are fastened together by bolts passing through the third connecting holes 14 and the arc-shaped slots 15. By adjusting the position of the bolts in the arc-shaped slots 15, the extension direction of the lateral connecting rod 3 can be flexibly adjusted.

[0056] like Figure 1 、 Figure 2 As shown, the arch member 1 and the column member 2 are quickly assembled with multi-angle adjustment through a mutually meshing gear structure, and both ends of the lateral connecting rod 3 are fixed on the connecting pieces 6 on both sides of the arch member 1 and the column member 2 for connecting adjacent arch frames.

[0057] A single arch frame is composed of two column components 2 and several arch components 1. The connection angle of each column component 2 and the arch component 1 can be freely adjusted and fixed by rotating the arch component 1. During installation, the arch component 1 and the column component 2 can be made as close to the surrounding rock as possible, so that the spliced arch frame can adaptively support the surrounding rock and achieve the purpose of support stability.

[0058] During specific use, multiple arch frames are set on the inner wall of the cavern and arranged along the extension direction of the cavern. The adjacent arch frames are connected by the lateral connecting rod 3. The lateral connecting rod 3 is a telescopic rod with adjustable length. The connection angle of the lateral connecting rod 3 can be adjusted by adjusting the position of the bolt connecting the lateral connecting rod 3 and the connecting member 6 in the arc groove 15, so that the lateral connecting rod 3 can be flexibly connected to each arch frame, so that a spatial truss structure is formed between the arch frames, thereby enhancing the integrity of the support structure.

[0059] When the column members 2 are connected to the vault members 1, the vault members 1 can be flexibly adjusted to different angles according to the slope of the cave vault and then fixedly connected to the column members 2. The number of vault members 1 can also be flexibly adjusted according to the size of the cave, so that the arch frame can be closely attached to the rock wall, achieving adaptive support for the uneven surrounding rock surface of the cave.

[0060] The assembly method of the quick-assembly arch frame according to one embodiment of the present invention comprises the following steps:

[0061] a. Install and fix the column member 2 with the second external gear 11;

[0062] b. Install the arch member 1 on the second external gear 11 of the column member 2 and adjust the arch member 1 so that the arch member 1 is against the surrounding rock excavation surface;

[0063] c. Install several arch components 1 in sequence that fit the rock wall;

[0064] d. Install and fix the column member 2 with the second internal gear 12 to complete the installation of a single arch;

[0065] e. Repeat steps d to install multiple arch frames, and use lateral connecting rods 3 to connect adjacent arch frames until all arch frame structures are installed.

[0066] Furthermore, the step a specifically includes the following steps:

[0067] a1. Observe the cave environment, select the support position, and clean the ground scum;

[0068] a2. Place the column member 2 with its bottom surface facing downward on the ground on one side of the cavern, with the base of the column member 2 protruding toward the other side of the cavern;

[0069] a3. Place the column member 2 with the second external gear 11 close to the rock wall on one side of the cavern, and use the connection port 7 at the bottom thereof to install expansion bolts to fix it to the ground.

[0070] Furthermore, the step b specifically includes the following steps:

[0071] b1. Align the first internal gear 10 at one end of the dome member 1 with the second external gear 11 of the column member 2;

[0072] b2. Rotate and adjust the arch member 1 toward the rock wall until it is closest to the rock wall, and then push the first internal gear 10 at one end of the arch member 1 into the second external gear 11 of the column member 2;

[0073] b3. Use bolts to pass through the second connecting holes 17 in the second external gear 1 for fixing.

[0074] Furthermore, the step c specifically includes the following steps:

[0075] c1. Align the inner side surface of the first internal gear 10 at one end of the dome member 1 with the first external gear 9 of the installed dome member 1;

[0076] c2. Rotate and adjust the arch member 1 toward the rock wall until it is closest to the rock wall, and push the first internal gear 10 at one end of the arch member 1 into the first external gear 9 of the installed arch member 1.

[0077] c3. Use bolts to pass through the first connecting holes 5 in the first external gear 9 to fix the two adjacent dome members 1;

[0078] c4. Repeat steps c1, c2 and c3 until the installation of the arch member 1 on the top of the entire cavern is completed.

[0079] Furthermore, the step d specifically includes the following steps:

[0080] d1. Place the column member 2 with the second internal gear 12 on the floor of the cave, with the base protruding toward the other side of the cave;

[0081] d2. Place the column member 2 with the second internal gear 12 close to the rock wall, and align the second internal gear 12 at one end of the column member 2 with the first external gear 9 of the installed dome member 1;

[0082] d3. Push the second internal gear 12 at one end of the column member 2 into the first external gear 9 of the installed dome member 1;

[0083] d4. Use bolts to fix through the first connection hole 5 in the first external gear 9, and use expansion bolts to fix to the ground through the connection port 7 at the bottom.

[0084] Furthermore, in step e, the installation of the lateral connecting rod 3 specifically includes the following steps:

[0085] e1. Push the connecting slot 13 at one end of the lateral connecting rod 3 into the connecting piece 6. Adjust the position of the lateral connecting rod 3 so that the third connecting hole 14 is aligned with the arc-shaped slot 15 and the other end of the lateral connecting rod 3 points to the connecting piece 6 corresponding to the other arch.

[0086] e2. Rotate the screw rod 8 to adjust the length of the lateral connecting rod 3 so that the connecting groove 13 at the other end of the lateral connecting rod 3 is pushed into the corresponding connecting piece 6 and the third connecting hole 14 is aligned with the arc-shaped groove 15;

[0087] e3. Use bolts to fix the two ends of the lateral connecting rod 3 to the connecting piece 6 through the third connecting hole 14.

[0088] In the above embodiment, the upper end of one column member 2 is the second external gear 11, and the upper end of the other column member 2 is the second internal gear 12. However, it is obvious that the present invention is not limited to this form. The upper ends of both column members 2 can also be the second external gear 11 or the second internal gear 12.

[0089] By adopting the above method, in the process of supporting the surrounding rock excavation surface, the contact area between the support structure and the surrounding rock excavation surface can be increased, effectively reducing the local overhang or overall overhead phenomenon. This method can make the support structure evenly loaded, effectively avoid the risk of arch deformation or structural failure caused by local concentrated loads or eccentric loads, and ultimately ensure that the support system provides continuous and stable support for the surrounding rock.

[0090] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiment in accordance with the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A quick-assembly arch frame, comprising an arch top member, a column member and a lateral connecting rod, characterized in that: A first internal gear is provided at one end of the arch member, and a first external gear is provided at the other end, and a first connecting hole is provided through the middle of the first external gear; The upper end of the column member is provided with a second internal gear or a second external gear, a second connecting hole is provided through the middle of the second external gear, and the lower end of the column member is provided with a base; The first internal gear, the first external gear, the second internal gear or the second external gear have the same module, pressure angle, number of teeth, tooth depth and tooth thickness; There are at least two column members, which are vertically installed respectively. The second internal gear or the second external gear of the column member is meshed with the first external gear or the first internal gear of the dome member and are fastened together by a fastener passing through the second connecting hole or the first connecting hole; There are multiple arch members, and the first internal gears of two adjacent arch members are meshed with the first external gears and are fastened together by fasteners passing through the first connecting holes; The column components and the arch components located on the same cross section of the cavern form an arch frame, and two adjacent arch frames are connected and fixed by the lateral connecting rods.

2. The quick-assembly arch according to claim 1, characterized in that: Connecting pieces are respectively provided on the front and rear surfaces of the arch member and the column member, and arc-shaped slots perpendicular to the cross-section of the cave are respectively provided on the connecting pieces. Connecting slots are respectively provided at both ends of the lateral connecting rod, and a third connecting hole is provided on the connecting slot. The connecting slot of the lateral connecting rod is inserted into the connecting piece, and the lateral connecting rod and the connecting piece are fastened and connected by bolts passing through the third connecting hole and the arc-shaped slot.

3. The quick-assembly arch according to claim 1, characterized in that: The arch components and column components are made of glass fiber reinforced composite materials.

4. The quick-assembly arch according to claim 1, characterized in that: The base of the column component is provided with a connection port for fixing to the ground.

5. The quick-assembly arch according to claim 1, characterized in that: The lateral connecting rod is a telescopic rod.

6. An assembly method for the quick-assembly arch according to any one of claims 1 to 5, characterized in that: The following steps are involved: a. Install and fix a column component close to the rock wall on one side of the cave; b. Connect and install the vault member at the upper end of the column member. During the connection process, first align the upper end of the column member with the connecting end of the vault member, then adjust the angle of the vault member so that the vault member is against the surrounding rock excavation surface, and then push the vault member into the column member; c. Install several arch members in sequence. During the installation process, align the connecting ends of two adjacent arch members first, then adjust the angle of the arch member to be installed so that the arch member to be installed is against the surrounding rock excavation surface, and then push the arch member to be installed into the installed arch member; d. Install and fix another column component to complete the installation of a single arch frame; e. Repeat steps a to d to install multiple arch frames, and use lateral connecting rods to connect multiple arch frames until all arch frame structures are installed.

7. The assembly method of the rapid assembly arch according to claim 6, characterized in that: In steps a and d, the column components are fixed to the ground using expansion bolts.

8. The assembly method of the rapid assembly arch according to claim 6, characterized in that: The column component and the arch component, as well as two adjacent arch components, are connected and positioned by internal meshing of an internal gear and an external gear.

9. The assembly method of the rapid assembly arch according to claim 8, characterized in that: When the internal gear is connected to the external gear, the internal gear and the external gear are first aligned, and then the angle of the arch component to be installed is rotated so that the arch component to be installed is rotated toward the rock wall side. After the arch component is rotated to the angle closest to the rock wall surface, the internal gear or external gear on the arch component to be installed is pushed into the external gear or internal gear of the installed component, and then fastened with fasteners.

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