Tunnel sidewall horizontal convergence deformation control device

Abstract

This utility model discloses a device for controlling the horizontal convergence deformation of tunnel sidewalls, comprising: a support plate, which is attached to the inclined side of the core soil; an inclined support rod, which is disposed on the side of the support plate; a force transmission rod, one end of which is supported on the support plate, and the other end of which is detachably connected to the inclined support rod via a first nut; a horizontal support rod, which is disposed on the side of the support plate and detachably connected to the lower end of the inclined support rod; and a bracket, which is placed on a platform on the side of the core soil; one side of the bracket cooperates with a steel arch frame, and the other side is detachably connected to the horizontal support rod via a second nut. This utility model controls the horizontal position of the device through the connection of two screws and nuts, which not only provides high structural strength and better suppresses the horizontal convergence deformation of the tunnel sidewalls, but also better adapts to core soils at different horizontal positions, is easy to assemble and disassemble, and can be reused.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel deformation control, and more specifically, to a device for controlling the horizontal convergence deformation of tunnel sidewalls. Background Technology

[0002] Chinese invention patent application CN116480365A discloses a tunnel excavation structure, a tunnel excavation method, and a tunnel construction method. By setting up support components and anchoring components, the deformation of vertically dipping phyllite is effectively controlled in a "pull-outer-stretch, brace-inner-support" manner. Specifically, one side of the support component is connected to the core soil, and the other side is connected to a steel arch frame. This allows for the reduction of horizontal convergence deformation of the tunnel sidewalls through the support of the core soil and the force transmission effect of the support components.

[0003] The support assembly used consists of a support plate, an inclined support rod, and a transverse support rod connected by a hinged mechanism. The transverse support rod has a telescopic mechanism, which can adjust its length and angle to accommodate core soil of different sizes. However, for tunnel surrounding rock with poor engineering geological properties (such as vertically dipping phyllite), the strength of the aforementioned support assembly using hinged and telescopic mechanisms is poor, and it cannot effectively suppress the horizontal convergence deformation of the tunnel sidewalls. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tunnel sidewall horizontal convergence deformation control device with a simple structure that can effectively suppress the horizontal convergence deformation of the tunnel sidewall. The technical solution is as follows:

[0005] A tunnel sidewall horizontal convergence deformation control device includes: a support plate, which is attached to the inclined side of the core soil; an inclined support rod, which is located on the side of the support plate; a force transmission rod, one end of which is supported on the support plate and the other end is detachably connected to the inclined support rod via a first nut, and the force transmission rod can be moved in a direction perpendicular to the inclined support rod by adjusting the connection position between the force transmission rod and the inclined support rod; a horizontal support rod, which is located on the side of the support plate and detachably connected to the lower end of the inclined support rod; and a bracket, which is placed on a platform on the side of the core soil; one side of the bracket cooperates with a steel arch frame, and the other side is detachably connected to the horizontal support rod via a second nut, and the horizontal support rod can be moved radially by adjusting the connection position between the horizontal support rod and the bracket.

[0006] In the tunnel sidewall horizontal convergence deformation control device of this utility model, the horizontal position of the device is controlled by the connection of two screws and nuts. This not only has high structural strength and can better suppress the horizontal convergence deformation of the tunnel sidewall, but also can better adapt to the core soil at different horizontal positions. It is easy to assemble and disassemble and can be reused.

[0007] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device: one end of the force transmission rod is provided with a spherical component supported on a support plate, and the other end is threaded and connected to a first nut after passing through a first through hole on the inclined support rod. Thus, even if the inclination angle of the support plate changes, the spherical component can effectively hold the support plate in place, ensuring that the horizontal convergence of the tunnel sidewall is transferred to the core soil.

[0008] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device, the force transmission rods consist of at least two rods arranged at axial intervals along the inclined support rods. This increases the number of force transmission points, making the support plate more uniformly stressed and enabling the horizontal convergence of the tunnel sidewall to be transferred to the core soil.

[0009] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device, it also includes a bend, at least one end of which is threadedly connected to an inclined support rod or a horizontal support rod. This results in a simple structure, easy assembly and disassembly, and high support strength.

[0010] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device, the support includes an arc-shaped channel steel that cooperates with the steel arch frame. Therefore, the arc-shaped channel steel can, to a certain extent, disperse the horizontal convergence of the tunnel sidewall, reduce the horizontal force component, and decrease the load borne by the horizontal support rod.

[0011] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device: the support also includes a base, a first vertical rod, and a second vertical rod; the lower ends of the first and second vertical rods are mounted on the base, and their upper ends are welded to an arc-shaped channel steel; the outer side of the horizontal support rod is provided with a threaded section, and the second vertical rod is provided with a second through hole, through which the threaded section passes and connects to a second nut. Therefore, the structure is simple, easy to assemble and disassemble, and provides high support strength.

[0012] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device, the support also includes a third vertical rod. The upper end of the third vertical rod is welded to the second vertical rod via a diagonal brace, and the lower end is detachably connected to the horizontal support rod. This improves the uniformity of force distribution on the horizontal support rod and enhances the strength of the device.

[0013] As a further improvement to the aforementioned tunnel sidewall horizontal convergence deformation control device, the horizontal support rod further includes a radial strip-shaped through hole located inside the threaded section. The third vertical rod passes through the radial strip-shaped through hole and is connected to the third nut. Therefore, the structure is simple, easy to assemble and disassemble, and provides high support strength.

[0014] It is evident that the tunnel sidewall horizontal convergence deformation control device of this utility model has a simple structure, is easy to disassemble and use, can better suppress the horizontal convergence deformation of the tunnel sidewall and better adapt to the core soil at different horizontal positions, effectively solves the technical problem that the support components in the prior art have poor strength and cannot effectively suppress the horizontal convergence deformation of the tunnel sidewall, and has strong practicality.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The content provided in the drawings and the related descriptions in this utility model can be used to explain this utility model, but do not constitute an undue limitation of this utility model. In the drawings:

[0017] Figure 1 This is a three-dimensional schematic diagram illustrating the application scenario of the tunnel sidewall horizontal convergence deformation control device of this utility model.

[0018] Figure 2 This is a radial schematic diagram of the tunnel sidewall horizontal convergence deformation control device of this utility model and its application scenarios.

[0019] Figure 3 This is a schematic diagram of the tunnel sidewall horizontal convergence deformation control device of this utility model.

[0020] The relevant markings in the above figures are:

[0021] 100 - Upper step, 110 - First working face, 120 - First platform, 130 - Core soil, 131 - Sloping side, 200 - Middle step, 210 - Second working face, 220 - Second platform, 230 - First passage, 300 - Lower step, 310 - Third working face, 320 - Third platform, 330 - Second passage, 400 - Small guide pipe, 500 - Steel arch frame, 610 - Support plate, 620 - Diagonal support rod, 630 - Force transmission rod, 631 - Spherical component, 632 - First nut, 640 - Horizontal support rod, 641 - Threaded section, 642 - Second nut, 643 - Radial strip through hole, 644 - Third nut, 651 - Arc-shaped channel steel, 652 - Base, 653 - First vertical rod, 654 - Second vertical rod, 655 - Third vertical rod, 656 - Diagonal rod, 660 - Bend. Detailed Implementation

[0022] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0023] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0024] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0025] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.

[0026] Figure 1 This is a three-dimensional schematic diagram illustrating the application scenario of the tunnel sidewall horizontal convergence deformation control device of this utility model. Figure 2 This is a radial schematic diagram of the tunnel sidewall horizontal convergence deformation control device of this utility model and its application scenarios. Figure 3 This is a schematic diagram of the tunnel sidewall horizontal convergence deformation control device of this utility model.

[0027] like Figure 1-2 As shown (refer to CN116480365A), the tunnel excavation process forms a series of structures along the tunnel's extension direction: a lower bench 300, a middle bench 200, an upper bench 100, an advanced support structure, and an initial support structure. The initial support structure includes spaced-apart steel arch frames 500. The advanced support structure includes spaced-apart small guide pipes 400. The upper bench 100 includes a first working face 110, a first platform 120, and core soil 130. The radial side of the core soil 130 is a sloping side 131 with a slope of 60–80°. The middle bench 200 includes a second working face 210, a second platform 220, and a first passage 230. The lower bench 300 includes a third working face 310, a third platform 320, and a second passage 330.

[0028] like Figure 2-3The tunnel sidewall horizontal convergence deformation control device shown is installed on both sides of the core soil 130, including a support plate 610, an inclined support rod 620, a force transmission rod 630, a horizontal support rod 640, a bracket, and a bend 660. The support plate 610 is attached to the inclined side 131 of the core soil 130. The inclined support rod 620 is located on the side of the support plate 610. The horizontal support rod 640 is located on the side of the support plate 610 and is detachably connected to the lower end of the inclined support rod 620. The two ends of the bend 660 are threadedly connected to either the inclined support rod 620 or the horizontal support rod 640.

[0029] One end of the force transmission rod 630 is provided with a spherical component 631 supported on the support plate 610, and the other end is threaded and connected to the first nut 632 after passing through the first through hole on the inclined support rod 620. Thus, by adjusting the connection position between the force transmission rod 630 and the first through hole on the inclined support rod 620, the force transmission rod 630 can be moved in a direction perpendicular to the inclined support rod 620. There are three force transmission rods 630, which are arranged at axial intervals along the inclined support rod 620.

[0030] The support frame is placed on a platform (i.e., the first platform 120) to the side of the core soil 130; the support frame includes an arc-shaped channel steel 651, a base 652, a first vertical rod 653, a second vertical rod 654, and a third vertical rod 655; the arc-shaped channel steel 651 cooperates with the steel arch frame 500; the lower ends of the first vertical rod 653 and the second vertical rod 654 are located on the base 652, and the upper ends are welded to the arc-shaped channel steel 651; the outer side of the horizontal support rod 640 is provided with a threaded section 641, and the second vertical rod 654 is provided with a second threaded section 641. The threaded section 641 passes through the second through hole and is connected to the second nut 642. A radial strip-shaped through hole 643 is provided on the inner side of the threaded section 641. The lower end of the third vertical rod 655 passes through the radial strip-shaped through hole 643 and is connected to the third nut 644. The upper end is welded to the second vertical rod 654 through the inclined rod 656. Thus, the horizontal support rod 640 can be moved radially by adjusting the connection position of the threaded section 641 and the second nut 642 and the connection position of the third vertical rod 655 and the radial strip-shaped through hole 643.

[0031] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A device for controlling horizontal convergence deformation of a tunnel sidewall, characterized by: include: A support plate (610) is attached to the inclined side (131) of the core soil (130); An inclined support rod (620) is provided on the side of the support plate (610); A force transmission rod (630) is provided, with one end supported on a support plate (610) and the other end detachably connected to an inclined support rod (620) via a first nut (632). The force transmission rod (630) can be moved in a direction perpendicular to the inclined support rod (620) by adjusting the connection position between the force transmission rod (630) and the inclined support rod (620). A horizontal support rod (640) is provided on the side of the support plate (610) and is detachably connected to the lower end of the inclined support rod (620); The support is placed on a platform on the side of the core soil (130); one side of the support is engaged with the steel arch frame (500), and the other side is detachably connected to the horizontal support rod (640) by the second nut (642), and the horizontal support rod (640) can be moved radially by adjusting the connection position between the horizontal support rod (640) and the support.

2. The tunnel-lining horizontal convergence deformation control device of claim 1, wherein: One end of the force transmission rod (630) is provided with a spherical component (631) supported on the support plate (610), and the other end is provided with a thread and is connected to the first nut (632) after passing through the first through hole on the inclined support rod (620).

3. The tunnel-lining horizontal convergence deformation control device of claim 1, wherein: The force transmission rods (630) are at least two and are arranged at intervals along the axial direction of the inclined support rods (620).

4. The tunnel-lining horizontal convergence deformation control device of claim 1, wherein: It also includes a bend (660), at least one end of which is threadedly connected to an inclined support rod (620) or a horizontal support rod (640).

5. The tunnel-lining horizontal convergence deformation control device of claim 1, wherein: The support includes an arc-shaped channel steel (651) that cooperates with the steel arch frame (500).

6. The tunnel-lining horizontal convergence deformation control device of claim 5, wherein: The support also includes a base (652), a first vertical rod (653), and a second vertical rod (654); The lower ends of the first vertical rod (653) and the second vertical rod (654) are mounted on the base (652), and the upper ends are welded to the arc-shaped channel steel (651). The horizontal support rod (640) has a threaded section (641) on its outer side, and the second vertical rod (654) has a second through hole. The threaded section (641) passes through the second through hole and is connected to the second nut (642).

7. The tunnel-lining horizontal convergence deformation control device of claim 6, wherein: The bracket also includes a third vertical rod (655), the upper end of which is welded to the second vertical rod (654) via a diagonal rod (656), and the lower end is detachably connected to a horizontal support rod (640).

8. The tunnel-lining horizontal convergence deformation control device of claim 7, wherein: The horizontal support rod (640) also includes a radial strip-shaped through hole (643) located inside the threaded section (641), and the third vertical rod (655) passes through the radial strip-shaped through hole (643) and is connected to the third nut (644).

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