Stable supporting structure for tunnel exit of loose and collapsed mass covering layer

Abstract

The utility model provides a loose and collapsed mass covering layer tunnel out-of-hole stable supporting structure which comprises an arch frame body and further comprises connecting rod adjusting mechanisms symmetrically installed on the outer walls of the two ends of the arch frame body. The limiting frames are evenly distributed on the outer walls of the two ends of the arch-shaped frame body, any limiting frame is fixedly connected with the arch-shaped frame body, and the side wall of any limiting frame is in threaded connection with a fastening screw; the supporting rods are slidably connected to the inner wall of the limiting frame, the bottom sections of the supporting rods are movably connected with the adjusting ends of the connecting rod adjusting mechanisms, and telescopic mechanisms are installed at the ends, away from the connecting rod adjusting mechanisms, of any set of supporting rods; and the supporting plate is rotationally mounted at the telescopic end of the telescopic mechanism and used for supporting the inner side wall of the tunnel. The tunnel portal supporting device is suitable for supporting tunnel portal of different heights and sizes, the practicability of the device is greatly improved, when a soil layer on the inner wall of a tunnel is not uniform, the attaching performance of the supporting plate and the inner wall of the tunnel is good, and the supporting stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering construction technical field, specifically, relate to a loose landslide covering layer tunnel exit stability support structure. BACKGROUND

[0002] In local plateau areas of China, due to special geological and meteorological conditions, landslide geological disasters are prone to occur frequently, and in tunnel engineering construction, especially in the face of complex geological conditions of loose landslide covering layer, the stability of tunnel exit section has been a difficulty and key point in construction, at present, the support technology widely used in the industry mainly includes grouting reinforcement, anchor rod support and steel arch support etc.

[0003] Through the search, the tunnel exit support device in the prior art still has the following defects:

[0004] (1) not applicable to supporting different height and size tunnel entrances, low practicality;

[0005] (2) when the tunnel inner wall soil layer is uneven, the adhesion of the support plate and the tunnel inner wall is poor, thereby affecting the stability of the support.

[0006] Therefore, we improve it and propose a loose landslide covering layer tunnel exit stability support structure. UTILITY MODEL CONTENT

[0007] The utility model relates to: for the current problem of not applicable to supporting different height and size tunnel entrances, low practicality;When the tunnel inner wall soil layer is uneven, the adhesion of the support plate and the tunnel inner wall is poor, thereby affecting the stability of the support.

[0008] In order to realize the above-mentioned utility model purpose, the utility model provides the following technical scheme:

[0009] Loose landslide covering layer tunnel exit stability support structure to improve the above-mentioned problems.

[0010] The utility model is specifically as follows:

[0011] Including the arched frame main body, still include, connecting rod adjusting mechanism, symmetry is installed at the both ends outer wall of arched frame main body, limit frame is evenly distributed at the both ends outer wall of arched frame main body, and arbitrary limit frame is fixedly connected with arched frame main body, and arbitrary limit frame side wall is connected with fastening screw, support rod is slidably connected in the inner wall of limit frame, the bottom section of support rod is movably connected with the adjusting end of connecting rod adjusting mechanism, and the end away from connecting rod adjusting mechanism of arbitrary group support rod is installed with telescopic mechanism, support plate is rotatably installed at the telescopic end of telescopic mechanism and is used for supporting the tunnel inner wall.

[0012] As the technical scheme of the utility model is optimized, the first V-shaped connecting rod is uniformly distributed on the outer wall of the two ends of the arched frame main body, the middle section of the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body, and the hydraulic telescopic cylinder is arranged at intervals.

[0013] As the technical scheme of the utility model is optimized, the first V-shaped connecting rod is uniformly distributed on the outer wall of the two ends of the arched frame main body, the middle section of the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body, and the hydraulic telescopic cylinder is arranged at intervals.

[0014] As the technical scheme of the utility model is optimized, the first V-shaped connecting rod is uniformly distributed on the outer wall of the two ends of the arched frame main body, the middle section of the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body, and the hydraulic telescopic cylinder is arranged at intervals.

[0015] As the technical scheme of the utility model is optimized, the first V-shaped connecting rod is uniformly distributed on the outer wall of the two ends of the arched frame main body, the middle section of the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body, and the hydraulic telescopic cylinder is arranged at intervals.

[0016] As the technical scheme of the utility model is optimized, the first V-shaped connecting rod is uniformly distributed on the outer wall of the two ends of the arched frame main body, the middle section of the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body, and the hydraulic telescopic cylinder is arranged at intervals.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] In the scheme of the utility model:

[0019] 1. The utility model discloses a first V-shaped connecting rod and a second V-shaped connecting rod are arranged, the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, and the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body.

[0020] 2. The utility model discloses a first V-shaped connecting rod and a second V-shaped connecting rod are arranged, the first V-shaped connecting rod is movably connected with the second V-shaped connecting rod, and the hydraulic telescopic cylinder is movably connected between the second V-shaped connecting rod and the arched frame main body. ACCOMPANYING DRAWINGS

[0021] Figure 1 The utility model provides loose collapse body covering layer tunnel exit hole stability support structure's three-dimensional structure schematic diagram one;

[0022] Figure 2The utility model provides a loose collapse body covering layer tunnel hole exit stable support structure's three -dimensional structure schematic diagram no.

[0023] Figure 3 The utility model provides a loose collapse body covering layer tunnel hole exit stable support structure's main view structure schematic diagram;

[0024] Figure 4 The utility model provides a loose collapse body covering layer tunnel hole exit stable support structure's explosion structure schematic diagram;

[0025] Figure 5 The utility model provides a loose collapse body covering layer tunnel hole exit stable support structure's connecting rod adjusting mechanism structure schematic diagram;

[0026] Figure 6 The utility model provides a loose collapse body covering layer tunnel hole exit stable support structure's Figure 5 The utility model provides a loose collapse body covering layer tunnel hole exit stable support structure's

[0027] Indicated in the drawing:

[0028] 1, arch frame main part;2, connecting rod adjusting mechanism;201, first V-shaped connecting rod;202, second V-shaped connecting rod;203, hydraulic telescopic cylinder;3, limit frame;4, fastening screw;5, support rod;6, telescopic mechanism;601, first threaded rod;602, sleeve;603, second threaded rod;7, support plate;20, first connecting rod;21, second connecting rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment.

[0030] Therefore, the following detailed description of the embodiment of the utility model is not intended to limit the scope of the claimed utility model, but only represents some embodiments of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0031] It should be noted that, in the case of no conflict, the embodiment and the feature and technical scheme in the embodiment in the utility model can be combined mutually.

[0032] It should be noted that: similar signs and letters indicate similar items in the following drawings, therefore, once an item is defined in a drawing, it does not need to be defined and explained further in the subsequent drawing.

[0033] As Figures 1-6 shown, the embodiment proposes a loose collapse covering layer tunnel exit hole stability supporting structure, comprising an arch-shaped frame body 1, further comprising, a connecting rod adjusting mechanism 2 symmetrically installed on the outer wall of both ends of the arch-shaped frame body 1; a limiting frame 3 uniformly distributed on the outer wall of both ends of the arch-shaped frame body 1, and any limiting frame 3 is fixedly connected with the arch-shaped frame body 1, and the side wall of any limiting frame 3 is threadedly connected with a fastening screw 4; a supporting rod 5 is slidingly connected to the inner wall of the limiting frame 3, the bottom section of the supporting rod 5 is movably connected with the adjusting end of the connecting rod adjusting mechanism 2, and the end of any group of supporting rods 5 away from the connecting rod adjusting mechanism 2 is provided with a telescopic mechanism 6; a supporting plate 7 is rotatably installed on the telescopic end of the telescopic mechanism 6, and is used for supporting the inner side wall of the tunnel.

[0034] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the connecting rod adjusting mechanism 2 comprises first V-shaped connecting rods 201 uniformly distributed on the outer wall of both ends of the arch-shaped frame body 1, the middle section of any first V-shaped connecting rod 201 is movably connected with a second V-shaped connecting rod 202, and the second V-shaped connecting rod 202 is movably connected with the arch-shaped frame body 1 through a hydraulic telescopic cylinder 203, and the hydraulic telescopic cylinders 203 are arranged at intervals.

[0035] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the telescopic end of the hydraulic telescopic cylinder 203 is movably connected with the hinge point of the second V-shaped connecting rod 202, and the end of the hydraulic telescopic cylinder 203 away from the second V-shaped connecting rod 202 is fixedly connected with the outer wall of the arch-shaped frame body 1.

[0036] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 1 shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the telescopic mechanism 6 comprises a first threaded rod 601 fixedly arranged on the top section of the supporting rod 5, a sleeve 602 is threadedly connected with the outer wall of the first threaded rod 601, a second threaded rod 603 is threadedly connected with the end of the sleeve 602 away from the first threaded rod 601, and the second threaded rod 603 is rotatably connected with the supporting plate 7.

[0037] As Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the supporting plate 7 is provided with a wear-resistant layer outside.

[0038] As shown in Figure 6 , Figure 1 、 Figure 2 、 Figure 3 , Figure 4 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the first V-shaped connecting rod 201 further comprises a first connecting rod 20 and a second connecting rod 21 movably connected, and the first connecting rod 20 and the second connecting rod 21 are movably connected with the supporting rod 5 at the ends away from the hinge point.

[0039] Specifically, the tunnel exit hole stability supporting structure of the loose collapse body covering layer is used as follows: first, the supporting device is sent to the supporting site, then the position of the supporting plate 7 is adjusted according to the size of the tunnel exit hole;

[0040] When the tunnel exit hole is small, the telescopic end of the hydraulic telescopic cylinder 203 is stretched, at this time, the included angle between the first connecting rod 20 and the second connecting rod 21 is reduced, and at the same time, the first V-shaped connecting rod 201 drives the supporting rod 5 to gather in the middle along the inner wall of the limiting frame 3, so that the supporting plate 7 is close to the arch-shaped frame body 1.

[0041] When the tunnel exit hole is large, the telescopic end of the hydraulic telescopic cylinder 203 is retracted, at this time, the included angle between the first connecting rod 20 and the second connecting rod 21 is increased, and at the same time, the first V-shaped connecting rod 201 drives the supporting rod 5 to disperse outward along the inner wall of the limiting frame 3, so that the supporting plate 7 is away from the arch-shaped frame body 1, which is suitable for supporting the tunnel exit hole with different heights and sizes, and greatly improves the practicability of the device.

[0042] The supporting rod 5 of the inner wall of the limiting frame 3 is fastened by the fastening screw 4, so as to avoid loosening in the later use process and affect the stability.

[0043] When the soil layer in the tunnel inner wall is uneven, the sleeve 602 is manually driven to rotate, so as to adjust the distance between the first threaded rod 601 and the second threaded rod 603, so that the supporting plate 7 is attached to the tunnel inner wall, and the stability of the supporting is improved.

[0044] All the technical features in the embodiment can be freely combined according to actual needs.

[0045] The above-mentioned embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A tunnel exit support structure for loose slump mass overburden comprising an arched frame body (1) characterised in that, Also include, Connecting rod adjusting mechanism (2) is symmetrically installed in the outer wall of both ends of the arched frame body (1); Limiting box (3) is uniformly distributed in the outer wall of both ends of the arched frame body (1), and any limiting box (3) is fixedly connected with the arched frame body (1), and any limiting box (3) is threadedly connected with a fastening screw (4) on the side wall; Supporting rod (5) is slidingly connected to the inner wall of the limiting box (3), the bottom section of the supporting rod (5) is movably connected with the adjusting end of the connecting rod adjusting mechanism (2), and any group of the supporting rod (5) is movably connected with the adjusting end of the connecting rod adjusting mechanism (2). Supporting plate (7) is rotatably installed at the telescopic end of the telescopic mechanism (6), which is used for supporting the inner side wall of the tunnel.

2. A loose caving overburden tunneling exit hole stabilizing support structure according to claim 1, characterized in that, The connecting rod adjusting mechanism (2) comprises first V-shaped connecting rods (201) uniformly distributed on the outer walls of both ends of the arched frame body (1), and the middle sections of any first V-shaped connecting rod (201) are movably connected with second V-shaped connecting rods (202), and the second V-shaped connecting rods (202) are movably connected with the arched frame body (1) through hydraulic telescopic cylinders (203), and the hydraulic telescopic cylinders (203) are arranged at intervals.

3. A loose caving overburden tunneling exit hole stabilizing support structure according to claim 2, characterized in that, The telescopic end of the hydraulic telescopic cylinder (203) is movably connected with the hinge point of the second V-shaped connecting rod (202), and the end of the hydraulic telescopic cylinder (203) away from the second V-shaped connecting rod (202) is fixedly connected with the outer wall of the arched frame body (1).

4. A loose caving overburden tunneling exit hole stabilizing support structure according to claim 1, wherein, The telescopic mechanism (6) comprises a first threaded rod (601) fixedly arranged at the top section of the supporting rod (5), the outer wall of the first threaded rod (601) is threadedly connected with a sleeve (602), the end of the sleeve (602) away from the first threaded rod (601) is threadedly connected with a second threaded rod (603), and the second threaded rod (603) is rotatably connected with the supporting plate (7).

5. A loose caving overburden tunneling exit hole stabilizing support structure according to claim 1, wherein, The outer side of the supporting plate (7) is provided with a wear-resistant layer.

6. A loose caving overburden tunneling exit hole stabilizing support structure according to claim 2, wherein, The first V-shaped connecting rod (201) further comprises a first connecting rod (20) and a second connecting rod (21) movably connected, and the ends of the first connecting rod (20) and the second connecting rod (21) away from the hinge point are movably connected with the supporting rod (5).

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