Mine tunnel method supporting assembly

Abstract

The utility model provides a mine tunnel method supporting assembly. The mine tunnel method supporting assembly comprises a plurality of connector boxes, a permanent double-layer primary supporting steel frame and a temporary primary supporting steel frame. The permanent double-layer preliminary bracing steel frame comprises an outer side steel frame assembly and an inner side steel frame assembly, the outer side steel frame assembly comprises a plurality of outer side steel frame units, and the inner side steel frame assembly comprises a plurality of inner side steel frame units; the adjacent ends of any two adjacent outer side steel frame units are fixedly connected, any two adjacent inner side steel frame units are connected through a connector box, and the inner side steel frame units are connected with the temporary steel frame units through connector boxes. By introducing the connector box and optimizing the connecting mode, the strength of connecting points of the supporting assembly is effectively enhanced, the strength and rigidity of the connecting points are improved, and the stability and bearing capacity of the whole supporting system are improved.

Description

Technical Field

[0001] The utility model relates to the field of mining engineering, in particular to a mine tunnel method support component. Background Art

[0002] When encountering weak surrounding rock during the construction of a mining tunnel and deformation needs to be strictly controlled, permanent double-layer initial support + temporary initial support is usually required as a middle partition wall and other structural forms. Usually, a steel frame needs to be set up in the initial support, but due to the limitations of construction and installation capabilities, the steel frame needs to be divided into several units, and joints are set between the units to form an overall force system. However, in the traditional connection method between units, the strength and stiffness of the joints become "weak points", and the bearing capacity of the connection points is limited, which creates safety hazards for the tunnel and the construction process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mine tunnel support component in order to overcome the defect of the prior art that the joints of the steel frame units are unfavorable in stress, which leads to potential safety hazards.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A mine tunnel support assembly, comprising a plurality of joint boxes, a permanent double-layer initial support steel frame and a temporary initial support steel frame; the temporary initial support steel frame comprises a temporary steel frame unit; the permanent double-layer initial support steel frame comprises an outer steel frame assembly and an inner steel frame assembly, the outer steel frame assembly comprises a plurality of outer steel frame units, and the inner steel frame assembly comprises a plurality of inner steel frame units; the adjacent ends of any two adjacent outer steel frames are connected and fixed, any two adjacent inner steel frame units are connected via a joint box, and the inner steel frame unit is connected to the temporary steel frame unit via the joint box.

[0006] In this solution, by introducing the joint box and optimizing the connection method, the strength and rigidity of the connection of the support assembly are effectively enhanced, which will ensure that the support assembly can better guarantee its safety in the face of weak surrounding rock. The joint box can be used to connect two adjacent inner steel frames together. The connection points between the support assemblies are increased through the joint box structure and the connection method between it and the steel frame, improving the stability and bearing capacity of the overall support system. The improved connection method and strengthened support assembly will reduce safety hazards during construction. Increasing the stability of the connection points helps ensure that workers and equipment can operate and work more safely during construction.

[0007] Preferably, the inner steel frame assembly is connected and fixed to the outer steel frame assembly via a plurality of joint boxes.

[0008] In this solution, the outer steel frame assembly and the inner steel frame assembly are connected by multiple joint boxes, which can increase the connection points, help improve the strength and rigidity of the connection points, increase the stability of the connection and the strength of the overall support system, so that the support system can effectively withstand the surrounding rock load, thereby reducing safety hazards.

[0009] Preferably, along the axial direction of the outer steel frame unit, there is a spacing distance between the connection point between the joint box and the inner steel frame unit and the connection points between two adjacent outer steel frame units.

[0010] In this solution, a spacing distance is provided between the connection between the joint box and the inner steel frame unit and the connection between the outer steel frame units, so as to avoid the weak points being in the same position.

[0011] Preferably, the joint box comprises a main body and an end plate, the end plate is connected and fixed to the end of the main body, the end plate is connected to the inner steel frame unit, and the main body is used to connect to the outer steel frame unit.

[0012] In this solution, the end plate is connected to the adjacent inner steel frame unit, the main body is connected to the adjacent outer steel frame unit, and the end plate is connected and fixed to the end of the joint box main body, making the connection between the two more stable and firm, reducing the risk of support failure caused by unstable connection.

[0013] Preferably, two end plates are provided, and the two end plates are respectively provided at two opposite ends of the main body; the main body has a flange and a web, and the end plates are welded and fixed to the flange and the web.

[0014] In this solution, two end plates are respectively arranged at the two ends of the joint box body, and the end plates are welded and fixed to the flange and the web, so that the connection stability of the support assembly is enhanced. Such a design helps to ensure the reliability of the connection point and the overall stability of the support system.

[0015] Preferably, the joint box further comprises a stiffening rib; the stiffening rib is fixed to the main body by welding and the stiffening rib is arranged between the two end plates.

[0016] In this solution, the bearing capacity of the connection point is enhanced by connecting the stiffening ribs to the main body of the joint box. The stiffening ribs are arranged between the two end plates, which will help to increase the rigidity and stability of the structure of the joint box itself.

[0017] Preferably, the mine tunnel support assembly further includes a first connecting member and a second connecting member; the outer steel frame unit is connected and fixed to the flange via the first connecting member, and the inner steel frame unit is connected and fixed to the end plate via the second connecting member.

[0018] In this solution, the first connecting member and the second connecting member are introduced to connect and fix the inner steel frame unit, the outer steel frame unit and the joint box, thereby improving the overall strength and rigidity of the support assembly.

[0019] Preferably, the mine tunnel support assembly also includes a third connecting piece; the temporary steel frame unit is connected and fixed to the flange through the third connecting piece; wherein, the outer steel frame unit and the temporary steel frame unit are arranged on opposite sides of the joint box, and the two sides of the inner steel frame unit are adjacent to the outer steel frame unit and the temporary steel frame unit respectively.

[0020] In this solution, by introducing the third connecting piece, the temporary initial support steel frame supports the permanent double-layer initial support steel frame, which reduces the excavation span of the tunnel chamber and improves the safety of the construction process.

[0021] Preferably, the first connecting member, the second connecting member and the third connecting member are all configured as high-strength bolts.

[0022] In this solution, since the first connecting member, the second connecting member and the third connecting member all use high-strength bolts, the strength of the connection points is enhanced. The installation process of the high-strength bolts is relatively simple, thus improving the construction efficiency.

[0023] Preferably, the main body is in the form of an I-shaped steel, which includes a web, a flange and stiffening ribs, and the stiffening ribs are welded and fixed to the web.

[0024] By adopting this type of joint box, the rigidity and strength of the joint box can be improved, so that the double-layer steel frame and the temporary steel frame form a good force-bearing system.

[0025] The positive and progressive effects of the utility model are:

[0026] By introducing the joint box and optimizing the connection method, the strength and rigidity of the connection points of the support components are effectively enhanced. The structure of the joint box and the connection method between it and the steel frame improve the stability and load-bearing capacity of the overall support system, helping to ensure that workers and equipment can operate and work more safely during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial structural schematic diagram of the mine tunnel method support assembly in the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the joint box in the utility model;

[0029] Figure 3 for Figure 2 Schematic diagram of the internal structure along the AA direction;

[0030] Figure 4 for Figure 2Schematic diagram of the internal structure along the BB direction;

[0031] Figure 5 It is a structural schematic diagram of the mine tunnel support assembly in the utility model.

[0032] Description of Reference Numerals

[0033] 1 Support components

[0034] 10 Outer steel frame unit

[0035] 101 First connecting piece

[0036] 102 Outer steel frame joint

[0037] 20 Inner steel frame unit

[0038] 201 Second connecting piece

[0039] 30 Temporary steel frame units

[0040] 301 Third connecting piece

[0041] 40 Connector Box

[0042] 41 I-shaped steel

[0043] 410 Flange

[0044] 411 I-shaped steel web

[0045] 412 stiffener

[0046] 42 End plate

[0047] 2 Welding steel plate DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and the present invention is not limited to the scope of the described embodiments.

[0049] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0051] See also Figures 1 to 5 The utility model provides a mine tunnel support assembly 1, which includes multiple joint boxes 40, a temporary initial support steel frame and a permanent double-layer initial support steel frame; the temporary initial support steel frame includes a temporary steel frame unit 30, the permanent double-layer initial support steel frame includes an outer steel frame assembly and an inner steel frame assembly, the outer steel frame assembly includes multiple outer steel frame units 10, and the inner steel frame assembly includes multiple inner steel frame units 20; the adjacent ends of any two adjacent outer steel frame units 10 are connected and fixed, and any two adjacent inner steel frame units 20 are connected through a joint box 40, and the inner steel frame unit 20 is connected to the temporary steel frame unit 30 through the joint box 40.

[0052] In this embodiment, by introducing the joint box 40 and optimizing the connection method, the connection strength and rigidity of the support assembly 1 are effectively enhanced. The joint box 40 can be used to connect two adjacent inner steel frame units 20 together. The structure of the joint box 40 and the connection method between it and the bracket increase the connection points between the support assemblies 1, thereby improving the stability and bearing capacity of the overall support system. The improved connection method and the strengthened support assembly 1 will reduce safety hazards during the construction process. Increasing the stability of the connection points helps ensure that workers and equipment can operate and work more safely during construction.

[0053] like Figure 1 As shown, the inner steel frame assembly is connected and fixed to the outer steel frame assembly through a plurality of joint boxes 40. By connecting the outer steel frame assembly and the inner steel frame assembly through a plurality of joint boxes 40, the connection points can be increased, which helps to improve the rigidity of the connection points, thereby increasing the stability of the connection and the strength of the overall support system, so that the support system can effectively withstand the pressure load from the surrounding rock, thereby reducing safety hazards.

[0054] like Figure 1As shown, along the axial direction of the outer steel frame unit 10, there is a spacing distance between the connection between the joint box 40 and the inner steel frame unit 20 and the connection between the two adjacent outer steel frame units 10. The spacing distance between the connection between the joint box 40 and the steel frame and the connection between the steel frames can avoid the weak points of force being in the same position.

[0055] In this embodiment, the outer steel frame units 10 are directly connected to the outer steel frame units 10 to form the outer steel frame joints 102, and the inner steel frame units 20 are connected and fixed to the inner steel frame units 20 through the joint box 40. The circumferential position of the joint box 40 is staggered with the outer steel frame joints 102 to avoid the weak points of force being at the same position, thereby improving the stability and safety of the support system.

[0056] like Figures 1 to 3 As shown, the joint box 40 includes a main body and an end plate 42, the end plate 42 is welded and fixed to the end of the main body, and the end plate 42 is connected to the inner steel frame unit 20. In this embodiment, two end plates 42 are provided; the two end plates 42 are respectively provided at two opposite ends of the main body; the main body has flanges 410, the flanges 410 are located at both ends of the main body, and the end plates 42 are welded and fixed to the flanges 410 adjacent to them.

[0057] In this embodiment, the joint box 40 is set as a rectangular parallelepiped structure, and two end plates 42 are welded and fixed to the two ends of the main body of the joint box 40. The connection design of the end plates ensures the stability and firmness between the end plates 42 and the main body. The end plates 42 are welded and fixed to the flanges 410, which improves the force bearing capacity and stability of the joint box 40.

[0058] like Figure 3 As shown, the joint box 40 is also provided with a stiffening rib 412; the stiffening rib 412 is welded and fixed to the main body and the stiffening rib 412 is arranged between the two end plates 42. In this embodiment, the structural stability of the joint box is enhanced by connecting the stiffening rib 412 to the main body of the joint box 40 and the stiffening rib 412 is arranged between the two end plates 42.

[0059] like Figure 1 As shown, the mine tunnel method support assembly 1 also includes a first connector 101 and a second connector 201; the outer steel frame unit 10 is connected and fixed to the flange 410 through the first connector 101, and the inner steel frame unit 20 is connected and fixed to the end plate 42 through the second connector 201. The mine tunnel method support assembly 1 also includes a temporary initial support and a third connector 301; the temporary initial support includes a temporary steel frame unit 30, and the temporary steel frame unit 30 is connected and fixed to the flange 410 through the third connector 301; wherein, the outer steel frame unit 10 and the temporary steel frame unit 30 are arranged on opposite sides of the joint box 40, and the inner and outer sides of the inner steel frame unit 20 are adjacent to the outer steel frame unit 10 and the temporary steel frame unit 30 respectively.

[0060] In this embodiment, by introducing the first connector 101 and the second connector 201, the connection mode of the support assembly 1 becomes more flexible. In this embodiment, the mine tunnel method support assembly 1 also introduces a temporary initial support steel frame and a third connector 301. The temporary initial support steel frame is connected and fixed to the flange 410 of the joint box 40 through the third connector 301. Such a connection mode improves the stability and reliability of the connection point. The outer steel frame unit 10 and the temporary steel frame unit 30 are arranged on opposite sides of the joint box 40, and the two sides of the inner steel frame unit 20 are adjacent to the outer steel frame unit 10 and the temporary steel frame unit 30 respectively.

[0061] In this embodiment, the first connecting member 101, the second connecting member 201 and the third connecting member 301 are all configured as high-strength bolts. Since the first connecting member 101, the second connecting member 201 and the third connecting member 301 are all configured as high-strength bolts, the strength of the connection point is enhanced. The installation process of the high-strength bolts is relatively simple, so the construction efficiency can be improved, which will save construction time and improve the overall construction efficiency.

[0062] like Figures 2 to 5 As shown, the main body of the joint box 40 is configured as an I-shaped steel 41 , and the I-shaped steel 41 includes a web 411 , and the stiffening ribs 412 are welded and fixed to the web 411 .

[0063] In this embodiment, the joint box 40 is connected to the inner steel frame unit 20 through the end plate 42 and high-strength bolts in the joint box 40; it is connected to the outer steel frame unit 10 through the steel flange 410 and high-strength bolts in the joint box 40; it is connected to the temporary steel frame unit 30 through the steel flange 410 and high-strength bolts in the joint box 40. The joint box 40 is composed of processed "I-shaped" steel, end plate 42 and stiffening ribs, and the end plate 42 is connected to the I-shaped steel 41 by welding. The flange 410 of the steel is connected to the outer steel frame unit 10 and the temporary steel frame unit 30 respectively, and the end plates 42 at both ends are connected to the inner steel frame unit 20 respectively. The size of the end plate 42 of the joint box 40 connected to the inner steel frame unit 20 is adapted to the model of the inner steel frame, and the circumferential size of the steel flange 410 connected to the outer steel frame unit 10 and the temporary steel frame unit 30 is adapted to the model of the outer steel frame unit 10 and the temporary steel frame unit 30 respectively. In this embodiment, multiple welded steel plates 2 are introduced between the joint box 40 and multiple steel frames when they are connected. The welded steel plates 2 are respectively welded and fixed to the ends of the outer steel frame unit 10, the inner steel frame unit 20, and the temporary steel frame unit 30, so as to facilitate the subsequent joint box 40 to be connected to each steel frame unit through high-strength bolts. The joint box 40 is connected to the inner steel frame unit 20 through the end plate 42 and the welded steel plate 2 in the joint box 40 by high-strength bolts; the joint box 40 is connected to the outer steel frame unit 10 through the steel flange 410 and the welded steel plate 2 in the joint box 40 by high-strength bolts; and the joint box 40 is connected to the temporary steel frame unit 30 through the steel flange 410 and the welded steel plate 2 in the joint box 40 by high-strength bolts. At the same time, the overall stiffness and strength of the mine tunnel method support assembly 1 are improved.

[0064] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A mine tunnel support assembly, characterized in that: It includes multiple joint boxes, permanent double-layer initial support steel frames and temporary initial support steel frames. The temporary initial support steel frame includes a temporary steel frame unit; The permanent double-layer initial support steel frame includes an outer steel frame assembly and an inner steel frame assembly, the outer steel frame assembly includes multiple outer steel frame units, and the inner steel frame assembly includes multiple inner steel frame units; the adjacent ends of any two adjacent outer steel frame units are connected, and any two adjacent inner steel frame units are connected through the joint box, and the inner steel frame unit is connected to the temporary steel frame unit through the joint box.

2. The mine tunneling support assembly according to claim 1, characterized in that: The inner steel frame assembly is connected and fixed to the outer steel frame assembly through a plurality of joint boxes.

3. The mine tunneling support assembly according to claim 2, characterized in that: Along the axial direction of the outer steel frame unit, there is a spacing distance between the connection point between the joint box and the inner steel frame unit and the connection points between two adjacent outer steel frame units.

4. The mine tunneling support assembly according to claim 2, characterized in that: The joint box comprises a main body and an end plate, wherein the end plate is connected and fixed to the end of the main body, the end plate is connected to the inner steel frame unit, and the main body is used to be connected to the outer steel frame unit.

5. The mine tunneling support assembly according to claim 4, characterized in that: The end plates are provided with two; The two end plates are respectively arranged at two opposite ends of the main body; The main body has flanges and webs, the flanges are located at two ends of the main body, and the end plates are fixed by welding to the adjacent flanges and webs.

6. The mine tunneling support assembly according to claim 5, characterized in that: The joint box also includes stiffening ribs; The stiffening rib is fixed to the main body by welding and is arranged between the two end plates.

7. The mine tunneling support assembly according to claim 5, characterized in that: The mine tunnel method support assembly also includes a first connecting member and a second connecting member; The outer steel frame unit is connected and fixed to the flange via the first connecting member, and the inner steel frame unit is connected and fixed to the end plate via the second connecting member.

8. The mine tunneling support assembly according to claim 7, characterized in that: The mine tunnel method support assembly also includes a third connecting member; The temporary initial support steel frame unit is connected and fixed to the flange via the third connecting member; The outer steel frame unit and the temporary steel frame unit are arranged on opposite sides of the joint box, and the two sides of the inner steel frame unit are adjacent to the outer steel frame unit and the temporary steel frame unit respectively.

9. The mine tunneling support assembly according to claim 8, characterized in that: The first connecting member, the second connecting member and the third connecting member are all configured as high-strength bolts.

10. The mine tunneling support assembly according to claim 6, characterized in that: The main body is in the form of I-shaped steel; The I-shaped steel comprises the flange and the web, and the stiffening rib is welded and fixed to the web.

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