Truss supporting structure for roadway supporting and application method thereof

Abstract

The invention relates to the technical field of underground mine mining, and discloses a truss supporting structure for roadway supporting and an application method thereof.The truss supporting structure comprises four stand columns, and the four stand columns serve as connecting centers of the whole supporting structure and are used for connecting or bearing other structural parts; the supporting mechanism is located above the four stand columns, and the supporting mechanism is used for supporting the inner wall of the roadway; and the base mechanism is located below the four stand columns, the base mechanism is used for guaranteeing the stability of the whole supporting structure, and the supporting mechanism comprises two supporting assemblies and a reinforcing assembly. A stable and efficient supporting system is formed through cooperation of a plurality of components, the supporting strength of a roadway can be remarkably improved, the structure can adapt to roadways of different shapes and sizes, the supporting requirements under various complex geological conditions are met, and the mounting method of the supporting structure is simple, convenient, easy to operate and implement and suitable for popularization and application. And the construction difficulty and cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of underground mining, and in particular to a truss support structure for tunnel support and an application method thereof. Background Art

[0002] During the mining process, tunnel excavation will change the stress state of the surrounding rock mass, causing the rock mass to deform or even break. In order to ensure the safe progress of mining production activities, effective support measures must be adopted to resist the deformation and destruction of the surrounding rock and maintain the shape and size of the tunnel. In the field of tunnel engineering, tunnel support is crucial. With the continuous development of underground projects such as mining and tunnel excavation, the geological conditions of the tunnels are becoming more and more complex and diverse, and the requirements for tunnel support are also increasing. The traditional truss support structure used for tunnel support has always played an important role in long-term engineering practice. Early tunnel supports mostly used simple wood or stone for support. With the advancement of technology, it gradually developed into a truss structure made of metal materials.

[0003] In the prior art, the common truss support structure used for tunnel support is usually composed of basic components such as columns and beams. By fixing the columns vertically at the bottom of the tunnel and connecting the beams horizontally between the columns, a frame structure is formed to withstand the rock pressure around the tunnel. Some truss support structures will also add some diagonal braces to enhance the stability of the overall structure. Its structural principle is mainly based on mechanical balance. By reasonably arranging various components, the support structure can evenly disperse the pressure of the tunnel surrounding rock, thereby ensuring the stability of the tunnel.

[0004] However, in actual application scenarios, such as in tunnel excavation in mountainous areas with complex geological conditions or in tunnel support for deep mining, the truss support structure of the prior art exposes many problems. First, since the existing structure is relatively fixed, it is difficult to adapt to tunnels of different shapes and sizes. When faced with tunnels with special shapes or large size changes, the support effect is greatly reduced. This is because the traditional truss structure design lacks flexibility and is difficult to quickly adjust according to the actual tunnel conditions. Secondly, the installation method of the existing support structure is relatively complicated and requires professional personnel to perform delicate operations. Not only is the construction difficult, but the cost is also high. This is mainly due to the complex connection method of its components and the high requirements for installation accuracy. In addition, the durability of the existing support structure is insufficient. Under the influence of factors such as groundwater erosion and rock weathering for a long time, the structure is prone to damage and its service life is shortened. Therefore, the present invention provides a truss support structure for tunnel support and an application method thereof to solve the deficiencies in the prior art. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a truss support structure for tunnel support and an application method thereof, which solves the problems of poor adaptability of the support structure for tunnel support in the prior art to the interior of different tunnels, low support strength and short service life.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a truss support structure for tunnel support and an application method thereof, comprising: four columns, the four columns serving as the connection hub of the overall support structure, used to connect or carry other structural members;

[0007] A supporting mechanism, the supporting mechanism is located above the four columns and is used to support the inner wall of the tunnel;

[0008] A base mechanism is located below the four columns and is used to ensure the stability of the overall supporting structure.

[0009] Preferably, the supporting mechanism includes two supporting components and a reinforcing component, the supporting component includes two top beam ribs and two connecting blocks, the two connecting blocks are respectively fixedly connected to the two ends of the two top beam ribs, and the outer sides of the connecting blocks are fixedly connected to two shoulder arc ribs.

[0010] Preferably, a connecting seat is provided at one end of the shoulder arc reinforcement, the adjacent sides of the two front and rear connecting seats are fixedly connected with longitudinal beam reinforcements, the adjacent sides of the two left and right connecting seats are fixedly connected with cross beam reinforcements, two auxiliary reinforcements are hinged in the middle of the cross beam reinforcement, and one end of the two auxiliary reinforcements is hinged to the outer side of the shoulder arc reinforcement.

[0011] Preferably, the reinforcement assembly includes a plurality of pad bases, each of which is arranged on the outside of the shoulder arc rib, and an anchor rod is arranged inside the pad base, one end of which is fixedly connected to the outside of the shoulder arc rib, and the other end of the anchor rod is inserted into the inner wall of the tunnel.

[0012] Preferably, the base mechanism comprises two fish belly beams, the two fish belly beams are arranged at the bottom of the four columns, and the adjacent sides of the two fish belly beams are fixedly connected with a plurality of connecting pipes.

[0013] Preferably, the top of the column is fixedly connected to the bottom of the connecting seat, the bottom of the column is fixedly connected to the top of the fish belly beam, and the outside of the column is poured with concrete.

[0014] Preferably, a pad base 2 is provided on the outer side of the column, two anchor rods 2 are provided inside the pad base 2, one end of the anchor rods 2 is inserted into the inner wall of the tunnel, and the outer side of the pad base 2 is in contact with the concrete outside the column.

[0015] A method for applying a truss support structure for tunnel support comprises the following steps:

[0016] Step 1: bury the base mechanism into the ground inside the tunnel;

[0017] Step 2: hinge the four columns to the base mechanism;

[0018] Step 3, hinge the support mechanism with the four columns;

[0019] Step 4: pour concrete around the base structure and the four columns;

[0020] Step five, connecting the pad base 1 and the pad base 2 to the inner wall of the tunnel through the anchor rod 1 and the anchor rod 2.

[0021] The present invention provides a truss support structure for tunnel support and an application method thereof. It has the following beneficial effects:

[0022] The present invention adopts multiple components to work together to form a stable and efficient support system, which can significantly improve the support strength of the tunnel. The structure can adapt to tunnels of different shapes and sizes and meet the support needs under various complex geological conditions. The installation method of the support structure is simple and convenient, easy to operate and implement, and reduces the construction difficulty and cost. The addition of the concrete grip layer further enhances the durability of the support structure and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 It is a top view of the present invention.

[0026] Among them, 1. Top beam reinforcement; 2. Connecting block; 3. Shoulder arc reinforcement; 4. Connecting seat; 5. Cross beam reinforcement; 6. Longitudinal beam reinforcement; 7. Fish belly beam; 8. Column; 9. Connecting pipe; 10. Anchor rod one; 11. Pad base one; 12. Pad base two; 13. Anchor rod two. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a truss support structure for tunnel support, including four columns 8, the four columns 8 serve as the connection center of the overall support structure, and are used to connect or carry other structural members; a support mechanism, the support mechanism is located above the four columns 8, and the support mechanism is used to support the inner wall of the tunnel; a base mechanism, the base mechanism is located below the four columns 8, and the base mechanism is used to ensure the stability of the overall support structure, the support mechanism includes two support components and a reinforcement component, the support component includes two top beam ribs 1 and two connecting blocks 2, the two connecting blocks 2 are respectively fixedly connected to the two ends of the two top beam ribs 1, the outer side of the connecting block 2 is fixedly connected to two shoulder arc ribs 3, one end of the shoulder arc rib 3 is provided with a connecting seat 4, the adjacent sides of the front and rear two connecting seats 4 are fixedly connected to the longitudinal beam ribs 6, the adjacent sides of the left and right two connecting seats 4 are fixedly connected to the cross beam ribs 5, and the middle of the cross beam ribs 5 is hinged with two auxiliary ribs, One end of the two auxiliary reinforcements is hinged to the outer side of the shoulder arc reinforcement 3, and the reinforcement component includes a plurality of pad bases 11, which are arranged on the outside of the shoulder arc reinforcement 3, and an anchor rod 10 is arranged inside the pad base 11, one end of the anchor rod 10 is fixedly connected to the outer side of the shoulder arc reinforcement 3, and the other end of the anchor rod 10 is inserted into the inner wall of the tunnel, and the base mechanism includes two fish belly beams 7, which are arranged at the bottom of four columns 8, and a plurality of connecting pipes 9 are fixedly connected to the adjacent sides of the two fish belly beams 7, the top of the column 8 is fixedly connected to the bottom of the connecting seat 4, and the bottom of the column 8 is fixedly connected to the top of the fish belly beam 7, and the outside of the column 8 is poured with concrete, and a pad base 2 12 is arranged on the outside of the column 8, and two anchor rods 2 13 are arranged inside the pad base 2 12, and one end of the anchor rod 2 13 is inserted into the inner wall of the tunnel, and the outer side of the pad base 2 12 contacts the concrete outside the column 8.

[0030] Specifically, the support mechanism is located above the four columns 8, and the support mechanism is used to support the inner wall of the tunnel. Specifically, the support mechanism includes two support components and a reinforcement component. The support component includes two top beam ribs 1 and two connecting blocks 2, the two connecting blocks 2 are fixedly connected to the two ends of the two top beam ribs 1, respectively, and the outer side of the connecting block 2 is fixedly connected with two shoulder arc ribs 3, one end of the shoulder arc rib 3 is provided with a connecting seat 4, the adjacent sides of the front and rear two connecting seats 4 are fixedly connected with the longitudinal beam rib 6, and the adjacent sides of the left and right two connecting seats 4 are fixedly connected with the cross beam rib 5. The reinforcement component includes a plurality of pad bases 11, the pad base 11 is arranged on the outside of the shoulder arc rib 3, and the inside of the pad base 11 is provided with an anchor rod 10, one end of the anchor rod 10 is fixedly connected to the outer side of the shoulder arc rib 3, and the other end of the anchor rod 10 is inserted into the inner wall of the tunnel. During the working process, firstly, a pit is dug in the ground inside the tunnel, and the base mechanism is buried in the ground inside the tunnel. Then, the bottom ends of the four columns 8 are hinged to the tops of the two fish belly beams 7 in the base mechanism, and then the connecting seat 4 at one end of the shoulder arc rib 3 in the support mechanism is hinged to the tops of the four columns 8, so that the support mechanism and the columns 8 form a stable connection. Next, concrete is poured around the base mechanism and the four columns 8, and at the same time, the pad base 12 and one end of the anchor rod 13 are sealed in the concrete, and the other end of the anchor rod 13 is inserted into the inner wall of the tunnel. The pad base 11 is inserted into the inner wall of the tunnel through the anchor rod 10, which supports the inner wall of the tunnel and enhances the overall stability of the support structure. Specifically, multiple pad bases 11 are evenly distributed on the outside of the shoulder arc ribs 3. Through the anchoring effect of the anchor rod 10, the shoulder arc ribs 3 are firmly connected to the inner wall of the tunnel to prevent the shoulder arc ribs 3 from displacement or deformation when under pressure, thereby ensuring that the entire support mechanism can effectively support the inner wall of the tunnel. The base mechanism is located below the four columns 8, and the base mechanism is used to ensure the stability of the overall support structure. The base mechanism includes two fish belly beams 7, and the two fish belly beams 7 are arranged at the bottom of the four columns 8. The adjacent sides of the two fish belly beams 7 are fixedly connected with multiple connecting pipes 9. When the base mechanism is buried in the ground inside the tunnel, the relative position and connection strength between the two fish belly beams 7 can be guaranteed by the connecting pipes 9, so that it can better bear the weight of the columns 8 and the upper support structure. The top of the column 8 is fixedly connected to the bottom of the connecting seat 4, the bottom of the column 8 is fixedly connected to the top of the fish belly beam 7, the outside of the column 8 is poured with concrete, the outside of the column 8 is provided with a pad base 2 12, the inside of the pad base 2 12 is provided with two anchor rods 2 13, one end of the anchor rod 2 13 is inserted into the inner wall of the tunnel, and the outside of the pad base 2 12 is in contact with the concrete outside the column 8. By making the outside of the pad base 2 12 contact with the concrete outside the column 8, on the one hand, the connection strength between the pad base 2 12 and the column 8 can be enhanced, and on the other hand, when the anchor rod 2 13 is inserted into the inner wall of the tunnel, the concrete can better combine the column 8 with the foundation of the tunnel, improve the stability of the overall structure, and prevent the column 8 from tilting or displacement.

[0031] Embodiment 2:

[0032] A method for applying a truss support structure for tunnel support comprises the following steps:

[0033] Step 1: bury the base mechanism into the ground inside the tunnel;

[0034] Step 2, hinge the four columns 8 to the base mechanism;

[0035] Step 3, hinge the support mechanism with the four columns 8;

[0036] Step 4: pour concrete around the base structure and the four columns 8;

[0037] Step five, connect the pad base 11 and the pad base 2 12 to the inner wall of the tunnel through the anchor rod 10 and the anchor rod 2 13.

[0038] Working principle: First, dig a hole in the ground inside the tunnel and bury the base mechanism in the ground inside the tunnel. Then, hinge the bottom ends of the four columns 8 with the tops of the two fish belly beams 7 in the base mechanism. Then, hinge one end of the shoulder arc rib 3 in the support mechanism with the tops of the four columns 8. Then, pour concrete around the base mechanism and the four columns 8. At the same time, seal one end of the pad base 12 and the anchor rod 13 in the concrete. The other end of the anchor rod 13 is inserted into the inner wall of the tunnel. The pad base 11 is used to support the inner wall of the tunnel through the anchor rod 10 to enhance the stability of the support.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A truss support structure for tunnel support, characterized in that: include: Four columns (8), the four columns (8) serving as the connection hub of the overall support structure, used to connect or carry other structural members; A supporting mechanism, the supporting mechanism being located above the four pillars (8) and being used for supporting the inner wall of the tunnel; A base mechanism is located below the four columns (8), and is used to ensure the stability of the overall supporting structure.

2. A truss support structure for tunnel support according to claim 1, characterized in that: The support mechanism comprises two support components and a reinforcement component, wherein the support component comprises two top beam ribs (1) and two connecting blocks (2), wherein the two connecting blocks (2) are respectively fixedly connected to the two ends of the two top beam ribs (1), and the outer sides of the connecting blocks (2) are fixedly connected to two shoulder arc ribs (3).

3. A truss support structure for tunnel support according to claim 2, characterized in that: A connecting seat (4) is provided at one end of the shoulder arc rib (3); the adjacent sides of the front and rear connecting seats (4) are fixedly connected to longitudinal beam ribs (6); the adjacent sides of the left and right connecting seats (4) are fixedly connected to transverse beam ribs (5); two auxiliary ribs are hinged in the middle of the transverse beam rib (5), and one end of the two auxiliary ribs is hinged to the outer side of the shoulder arc rib (3).

4. A truss support structure for tunnel support according to claim 2, characterized in that: The reinforcement assembly comprises a plurality of pad bases (11), wherein the pad bases (11) are arranged outside the shoulder arc ribs (3), and an anchor rod (10) is arranged inside the pad bases (11), one end of the anchor rod (10) is fixedly connected to the outer side of the shoulder arc ribs (3), and the other end of the anchor rod (10) is inserted into the inner wall of the tunnel.

5. A truss support structure for tunnel support according to claim 1, characterized in that: The base mechanism comprises two fish belly beams (7), the two fish belly beams (7) are arranged at the bottom of four columns (8), and a plurality of connecting pipes (9) are fixedly connected to the adjacent sides of the two fish belly beams (7).

6. A truss support structure for tunnel support according to claim 1, characterized in that: The top of the column (8) is fixedly connected to the bottom of the connecting seat (4), the bottom of the column (8) is fixedly connected to the top of the fish belly beam (7), and the outside of the column (8) is poured with concrete.

7. A truss support structure for tunnel support according to claim 1, characterized in that: A second pad base (12) is arranged on the outer side of the column (8), and two second anchor rods (13) are arranged inside the second pad base (12). One end of the second anchor rod (13) is inserted into the inner wall of the tunnel, and the outer side of the second pad base (12) is in contact with the concrete outside the column (8).

8. An application method of a truss support structure for tunnel support, characterized in that: A truss support structure for tunnel support as described in any one of claims 1 to 7, comprising the following steps: Step 1: bury the base mechanism into the ground inside the tunnel; Step 2, hinge the four columns (8) with the base mechanism; Step 3, hinge the support mechanism and the four columns (8); Step 4, pouring concrete around the base structure and the four columns (8); Step 5: Connect the pad base 1 (11) and the pad base 2 (12) to the inner wall of the tunnel through the anchor rod 1 (10) and the anchor rod 2 (13).

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