Tunnel surrounding rock deformation supporting structure

Abstract

The utility model relates to the technical field of tunnel surrounding rock supporting, in particular to a tunnel surrounding rock deformation supporting structure which comprises a base, a foundation support is arranged at the upper end of the base in a clamped mode, a connecting clamping base is embedded in the foundation support, the whole formed by the foundation support and the connecting clamping base is in a circular arc shape, and installation cavities are formed in the outer surfaces of the foundation support and the connecting clamping base. A bottom plate is connected between the lower ends of the inner sides of the foundation supports, a fixing rod is fixedly installed on the base through the inner bottom end of the supporting cavity, a rotating nut is installed on the outer portion of the fixing rod in a threaded mode, a spring is installed at the upper end of the rotating nut, and a top plate is installed at the upper end of the spring; the end, away from the spring, of the top plate is connected with the inner top end of the supporting cavity. By controlling variables of a tunnel surrounding rock supporting structure, the width, the height and the arc length are adjusted one by one, and the purpose of accurately measuring supporting data is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel surrounding rock support, in particular to a tunnel surrounding rock deformation support structure. Background Art

[0002] Tunnel excavation destroys the initial stress balance of the stratum, resulting in surrounding rock stress release and cavern deformation. Excessive deformation will cause the surrounding rock to loosen or even collapse, and effective initial support measures can control the instability of the surrounding rock. Therefore, initial support must be carried out during tunnel excavation. Common initial support methods include sprayed anchor support, anchor support, shotcrete, steel arch support, etc.

[0003] In the process of initial support, the height, width and curvature of the initial support structure are controlled to conduct data evaluation in combination with the field measured data, and then the best initial support structure data is selected as the final support standard. However, in the process of data evaluation of the existing initial support structure, since the support structure is installed by welding consolidation, the curvature, width and height of the installed support structure cannot be changed, and it is difficult to obtain effective data by controlling variables, so that the final support standard selected is biased. Utility Model Content

[0004] In order to solve the problem that in the process of data evaluation of the existing support structure, since the support structure is installed by welding, that is, the value cannot be changed after the arc, width or height is determined, it is not conducive to controlling the variables to measure effective data and is not conducive to use. Therefore, the utility model proposes a tunnel surrounding rock deformation support structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tunnel surrounding rock deformation support structure, including a base, a foundation support is clamped on the upper end of the base, a connecting clamp is embedded in the foundation support, the foundation support and the connecting clamp form a circular arc shape as a whole, the outer surfaces of the foundation support and the connecting clamp are provided with installation cavities, a cross bar and an arc rod are installed in the installation cavity, a bottom plate is connected between the lower ends of the inner sides of the foundation supports, a fixing rod is fixedly installed on the base through the inner bottom end of the supporting cavity, a rotating nut is installed on the external thread of the fixing rod, a spring is installed on the upper end of the rotating nut, a top plate is installed on the upper end of the spring, and the end of the top plate away from the spring is connected to the inner top end of the supporting cavity.

[0006] A wire management groove is provided in the middle of the upper surface of the bottom plate, and mounting grooves are provided at both ends of the upper surface of the bottom plate close to the base.

[0007] An operating hole is formed through the base corresponding to the rotating nut. The operating hole is square in shape, and the height of the operating hole is higher than the height of the fixing rod.

[0008] The cross bar is installed through the inside of the basic support and the connecting seat, and the arc-shaped rods are distributed on the cross bar at intervals.

[0009] The connection cross section between the basic support and the connection socket is in an "S" shape.

[0010] The plate body portion of the bottom plate corresponding to the wire management groove and the installation groove is penetrated with evenly distributed cable jacks, and the cable jacks are circular.

[0011] There are two bases.

[0012] There are several basic supports, and a bottom plate is commonly connected between the lower ends of the inner sides of two basic supports.

[0013] The outer surfaces of the base support and the connecting card seat are covered with a cover cloth.

[0014] The beneficial effects of the utility model are:

[0015] 1. By adjusting the foundation support, increasing or decreasing the number of connecting brackets and twisting the rotating nut, the height, width and curvature of the arc-shaped support structure are changed to obtain effective support data. This support structure can adjust the curvature, width or height, which is conducive to controlling variables to measure effective data. It has flexibility and adjustability, which helps to improve the accuracy and reliability of data evaluation and provide a more scientific basis for tunnel engineering construction.

[0016] 2. The tunnel surrounding rock deformation support structure proposed by the utility model can avoid the adverse effects brought about by the existing support structure being installed in a welding manner, improve the structural internal forces generated under different circumstances, thereby better adapting to the deformation of the tunnel surrounding rock and improving the stability and safety of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the tunnel surrounding rock deformation support structure proposed by the utility model;

[0018] Figure 2 A schematic diagram of the internal structure of the tunnel surrounding rock deformation support structure proposed by the utility model;

[0019] Figure 3 The utility model provides a tunnel surrounding rock deformation support structure. Figure 2 A in the enlarged view;

[0020] Figure 4 A detailed diagram of a partial structure of a tunnel surrounding rock deformation support structure proposed by the utility model;

[0021] Figure 5 A cutaway diagram of a portion of the structure of the tunnel surrounding rock deformation support structure proposed by the utility model;

[0022] Figure 6 This is a cross-sectional view of the tunnel surrounding rock deformation support structure proposed by the utility model.

[0023] Marked in the figure: base 1, cover cloth 2, bottom plate 3, cable management groove 4, installation groove 5, operation hole 6, basic support 7, connecting base 8, support cavity 9, cross bar 10, arc rod 11, installation cavity 12, fixing rod 13, rotating nut 14, spring 15, top plate 16, cable jack 17. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0025] First of all, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1-6As shown, the tunnel surrounding rock deformation support structure described in the utility model includes a base 1 arranged at intervals, two bases 1 are provided with foundation supports 7 at the upper ends, several foundation supports 7 are embedded with connecting bases 8, the foundation supports 7 and the connecting bases 8 form a circular arc as a whole, the outer surfaces of the foundation supports 7 and the connecting bases 8 are covered with a cover cloth 2, the outer surfaces of the foundation supports 7 and the connecting bases 8 are provided with an installation cavity 12, a cross bar 10 and an arc rod 11 are installed in the installation cavity 12, a bottom plate 3 is commonly connected between the lower ends of the inner sides of the two foundation supports 7, a supporting cavity 9 is provided on the outer surface of the base 1, a fixing rod 13 is installed on the base 1 through the inner bottom end of the supporting cavity 9, a rotating nut 14 is installed on the external thread of the fixing rod 13, a spring 15 is installed on the upper end of the rotating nut 14, a top plate 16 is installed on the upper end of the spring 15, and the end of the top plate 16 away from the spring 15 is connected to the inner top of the supporting cavity 9.

[0028] A wire management groove 4 is provided in the middle of the upper surface of the bottom plate 3, and mounting grooves 5 are provided at both ends of the upper surface of the bottom plate 3 close to the base 1. An operating hole 6 is provided through the base 1 corresponding to the rotating nut 14. The operating hole 6 is square in shape, and its height is higher than that of the fixing rod 13.

[0029] The cross bar 10 is installed through the inside of the basic support 7 and the connecting socket 8, and the arc rods 11 are distributed on the cross bar 10 at intervals. The connecting section of the basic support 7 and the connecting socket 8 is "S" shaped, and the plate part of the bottom plate 3 corresponding to the wire management groove 4 and the installation groove 5 is penetrated by evenly distributed cable jacks 17, and the cable jacks 17 are circular.

[0030] Working principle and process:

[0031] When the support structure is in use, the bottom plate 3, the base 1, the basic support 7 and the connecting clamp 8 are installed in the tunnel in sequence. According to the needs of the on-site measured data, when the data comparison value is large, the number of the basic support 7 or the connecting clamp 8 is adjusted, thereby changing the overall height and width of the base 1, the basic support 7 and the connecting clamp 8, and obtaining the support data at this time;

[0032] When the data comparison value is small, the rotating nut 14 is screwed through the operating hole 6 in turn, and the rotating nut 14 rotates relative to the fixed rod 13, and the rotating nut 14 drives the spring 15 and the top plate 16 to move, thereby changing the relative distance between the base 1 and the basic support 7 and the connecting clamp 8, and further changing the length of the arc support structure, and obtaining the support data at this time;

[0033] The utility model controls the variables of the tunnel surrounding rock support structure to adjust the width, height and arc length one by one, thereby achieving the purpose of accurately measuring support data.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tunnel surrounding rock deformation support structure, characterized in that: The invention comprises a base, the upper end of which is clamped with a basic support, the connecting base is embedded in the basic support, the basic support and the connecting base are formed into an arc shape as a whole, the outer surfaces of the basic support and the connecting base are provided with installation cavities, the installation cavities are provided with cross bars and arc bars, a bottom plate is connected between the lower ends of the inner sides of the basic support, a fixing rod is fixedly installed on the base through the inner bottom end of the supporting cavity, a rotating nut is installed on the external thread of the fixing rod, a spring is installed on the upper end of the rotating nut, a top plate is installed on the upper end of the spring, and an end of the top plate away from the spring is connected to the inner top end of the supporting cavity.

2. The tunnel surrounding rock deformation support structure according to claim 1, characterized in that: A wire management groove is provided in the middle of the upper surface of the bottom plate, and mounting grooves are provided at both ends of the upper surface of the bottom plate close to the base.

3. The tunnel surrounding rock deformation support structure according to claim 1, characterized in that: An operating hole is formed through the base corresponding to the rotating nut. The operating hole is square in shape, and the height of the operating hole is higher than the height of the fixing rod.

4. The tunnel surrounding rock deformation support structure according to claim 1, characterized in that: The cross bar is installed through the inside of the basic support and the connecting seat, and the arc-shaped rods are distributed on the cross bar at intervals.

5. The tunnel surrounding rock deformation support structure according to claim 1, characterized in that: The connection cross section between the basic support and the connection socket is in an "S" shape.

6. The tunnel surrounding rock deformation support structure according to claim 2, characterized in that: The plate body portion of the bottom plate corresponding to the wire management groove and the installation groove is penetrated with evenly distributed cable jacks, and the cable jacks are circular.

7. The tunnel surrounding rock deformation support structure according to claim 1, characterized in that: The outer surfaces of the base support and the connecting card seat are covered with a cover cloth.

8. The tunnel surrounding rock deformation support structure according to claim 1, characterized in that: There are several basic supports, and a bottom plate is commonly connected between the lower ends of the inner sides of two basic supports.

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