Road tunnel portal section collapsed mass slope protection structure

Abstract

The utility model relates to the technical field of slope protection, in particular to a highway tunnel portal section collapsed mass slope protection structure which comprises a mountain and a tunnel body penetrating through the mountain, the top of the portal side of the tunnel body is fixedly connected with a buffer frame, the buffer frame comprises a supporting frame body, and the middle of the supporting frame body is fixedly connected with a plurality of damping buffers. A mounting groove is formed in the slope, close to the tunnel body opening, of the mountain. Compared with the prior art, the mountain protection device has the advantages that by arranging the broken stone baffle, broken stones sliding from a mountain can be effectively intercepted and prevented from directly sliding onto a road, the protection effect is improved, sliding of the protection body is guided through the guide rails, kinetic energy can be effectively absorbed through the buffer springs, impact force of stones is reduced, danger is reduced, and the service life of the mountain protection device is prolonged. The supporting and buffering effects can be further improved through a plurality of damping buffers, the service life of the protection body is prolonged, rainwater is guided to two sides to slide to the outer side of a road through a guide ramp, and the pressure of the protection body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of slope protection, in particular to a slope protection structure for a collapsed body at a highway tunnel portal. Background Art

[0002] When constructing highway tunnels through mountainous terrain, the tunnel entrances often face steep, broken slopes due to route constraints. The safety and stability of the tunnel entrance section plays a crucial role in the entire tunnel construction process.

[0003] Chinese utility model CN219973240U discloses a highway tunnel portal section collapse and landslide slope protection structure. The highway tunnel portal section collapse and landslide slope protection structure adds stones and soil to the box on the protection plate to improve the stability of the protection plate during installation. When stones and soil fall on the highway tunnel portal section collapse and landslide slope, the buffer plate can play a blocking role, preventing the fallen rocks and soil from falling directly into the tunnel portal, thereby improving the safety of vehicles entering the tunnel portal. The spring and rubber pad are elastic. When the falling rocks and soil push the buffer plate, the spring is compressed to generate a reverse force, which can play a buffering role in conjunction with the rubber pad. The overall structure does not contain electrical equipment, which greatly improves the green and environmental protection of the device. However, the highway tunnel portal section collapse and landslide slope protection structure still has the following problems during use:

[0004] Although the landslide slope protection structure of the highway tunnel entrance section consolidates the soil or rock mass at the top of the tunnel entrance, it lacks protection and interception. The debris from the landslide is easily intercepted and buffered, and the debris can easily fall onto the road surface, posing a danger to traffic. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the present invention is to provide a landslide slope protection structure for a highway tunnel portal section, so as to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a slope protection structure for a landslide body in a highway tunnel entrance section, including a mountain and a tunnel body passing through the mountain, a buffer frame fixedly connected to the top of the tunnel main body entrance side, the buffer frame including a support frame body, a plurality of damping buffers fixedly connected to the middle of the support frame body, an installation groove is provided on the slope surface of the mountain near the tunnel main body entrance, the inner wall of the installation groove is fixedly connected to a guide rail, a guide rod is fixedly connected to the center of the inner wall of the guide rail, a slider is slidably connected to the outer wall of the guide rod, a buffer spring is sleeved on the outer wall of the guide rod, the buffer spring is located between a side of the slider near the buffer frame and the inner wall of the guide rail, the slider and the guide rod dampen sliding, the top of the slider is fixedly connected to a protective body, the protective body includes a cover plate that fits the mountain slope, a gravel baffle perpendicular to the cover plate is fixedly connected to the side of the top of the cover plate near the buffer frame, and the surface of the gravel baffle near the cover plate is fixedly connected to a guide ramp.

[0008] Preferably, from any of the above schemes, the buffer frame includes a fixed base, both sides of the top of the fixed base are fixedly connected to support rods, the support frame body is fixedly connected to one side of the support rod, and the fixed base and the diameter of the support rod are fixedly connected with reinforcing ribs.

[0009] The technical effect achieved by adopting the above solution is: the buffer frame can further improve the support and buffering effect, while increasing the support strength and providing an extra layer of support insurance.

[0010] Preferably, from any of the above solutions, the support frame is arranged in parallel with the gravel baffle, and the bottom of the gravel baffle is pressed against the telescopic ends of a plurality of damping buffers.

[0011] The technical effect achieved by adopting the above solution is: the support and buffering effects can be further improved by using a plurality of damping buffers, thereby greatly increasing the service life of the protective body.

[0012] Preferably, from any of the above schemes, both sides of the bottom surface of the guide track are fixedly connected with fixed ground spikes, the fixed ground spikes are fixedly connected to the mountain by being driven into the mountain, and the guide track is fixedly connected to the mountain through the fixed ground spikes.

[0013] The technical effect achieved by adopting the above solution is that the guide track can be effectively fixed to the mountain by fixing the ground spikes, thereby improving the reinforcement effect of the rock mass and soil.

[0014] Preferably, from any of the above solutions, the length of the buffer spring after restoration is adapted to the length of the guide rod, and the width of the protective body is greater than the width of the tunnel body.

[0015] The technical effect achieved by adopting the above solution is that the buffer spring can have sufficient compression energy absorption space, and the interception width of the protective body can effectively protect the width of the tunnel road.

[0016] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0017] The landslide slope protection structure at the entrance section of the highway tunnel can effectively intercept the gravel sliding down the mountain by setting up a gravel baffle, preventing it from sliding directly onto the road, thereby improving the protection effect. At the same time, the guide rail guides the sliding of the protection body and the buffer spring can effectively absorb kinetic energy, reduce the impact force of the stone, and reduce the danger. The support and buffer effects can be further improved by a number of damping buffers, greatly improving the service life of the protection body. In addition, the guide ramp allows rainwater to slide to the outside of the road in the form of gravel on both sides, thereby reducing the pressure on the protection body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a side structural diagram of the present utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0021] In the figure: 1-mountain, 2-tunnel body, 3-buffer frame, 31-fixed base, 32-reinforcement rib, 33-support rod, 34-support frame, 35-damping buffer, 4-protective body, 41-cover plate, 42-gravel baffle, 43-guide ramp, 5-mounting groove, 6-guide rail, 7-guide rod, 8-fixed ground spike, 9-slider, 10-buffer spring. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0023] Example 1: Figures 1 to 3As shown, a road tunnel portal section collapse and landslide slope protection structure includes a mountain 1 and a tunnel body 2 passing through the mountain 1, characterized in that: a buffer frame 3 is fixedly connected to the top of the tunnel body 2 on the portal side, the buffer frame 3 includes a support frame 34, and a plurality of damping buffers 35 are fixedly connected to the middle of the support frame 34; a mounting groove 5 is opened on the slope surface of the mountain 1 near the tunnel body 2 portal, a guide rail 6 is fixedly connected to the inner wall of the mounting groove 5, a guide rod 7 is fixedly connected to the center of the inner wall of the guide rail 6, and the guide rod 7 is fixedly connected to the inner wall of the guide rail 6. The outer wall of the slider is slidably connected to the slider 9, and the outer wall of the guide rod 7 is sleeved with a buffer spring 10. The buffer spring 10 is located between the side of the slider 9 close to the buffer frame 3 and the inner wall of the guide track 6. The slider 9 and the guide rod 7 dampen the sliding. The top of the slider 9 is fixedly connected to the protective body 4. The protective body 4 includes a cover plate 41 that fits the slope of the mountain 1. The top of the cover plate 41 is fixedly connected to a gravel baffle 42 that is perpendicular to the cover plate 41 near the buffer frame 3. The surface of the gravel baffle 42 close to the cover plate 41 is fixedly connected to a guide ramp 43.

[0024] As an optional technical solution of the present invention, the buffer frame 3 includes a fixed base 31, both sides of the top of the fixed base 31 are fixedly connected to support rods 33, the support frame body 34 is fixedly connected to one side of the support rod 33, and the fixed base 31 and the support rod 33 are fixedly connected to each other with a reinforcing rib 32 on their diameters. The buffer frame 3 can further improve the support and buffering effects, while improving the support strength and providing an extra layer of support insurance.

[0025] As an optional technical solution of the present invention, the support frame 34 is arranged parallel to the gravel baffle 42, and the bottom of the gravel baffle 42 is pressed against the telescopic ends of several damping buffers 35. The support and buffering effects can be further improved by several damping buffers 35, thereby greatly improving the service life of the protective body 4.

[0026] As an optional technical solution of the present invention, both sides of the bottom surface of the guide track 6 are fixedly connected with fixed ground spikes 8, and the fixed ground spikes 8 are fixedly connected to the mountain 1 by being driven into the mountain 1. The guide track 6 is fixedly connected to the mountain 1 through the fixed ground spikes 8. The fixed ground spikes 8 can effectively fix the guide track 6 to the mountain, thereby improving the reinforcement effect of the rock soil.

[0027] As an optional technical solution of the present invention, the length of the buffer spring 10 after reset is adapted to the length of the guide rod 7, and the width of the protective body 4 is greater than the width of the tunnel body 2, so that the buffer spring 10 can have sufficient compression energy absorption space, and at the same time, the interception width of the protective body 4 can effectively protect the tunnel road width.

[0028] A road tunnel portal section landslide slope protection structure, the working principle is as follows:

[0029] 1) By providing the gravel baffle 42, the gravel sliding down from the mountain 1 can be effectively intercepted to prevent it from sliding directly onto the road, thereby improving the protection effect;

[0030] 2) The guide rail 6 guides the sliding of the shield 4 and the buffer spring 10 can effectively absorb kinetic energy, reduce the impact force of the stone, and reduce the danger. The multiple damping buffers 35 can further improve the support and buffering effect, thereby extending the service life of the shield 4;

[0031] 3) The guide ramp 43 is used to guide rainwater to slide down to the outside of the road in the form of gravel on both sides, thereby reducing the pressure on the protective body 4.

[0032] In summary, the landslide slope protection structure at the entrance section of the highway tunnel can effectively intercept the gravel sliding down from the mountain 1 by setting up a gravel baffle 42, preventing it from sliding directly onto the road, thereby improving the protection effect. At the same time, the guide rail 6 guides the sliding of the protection body 4 and the buffer spring 10 can effectively absorb kinetic energy, reduce the impact force of the stone, and reduce the danger. A number of damping buffers 35 can further improve the support and buffering effects, greatly improving the service life of the protection body 4, and the guide ramp 43 can guide rainwater to slide to the outside of the road in the form of gravel on both sides, thereby reducing the pressure on the protection body 4.

[0033] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road tunnel portal section landslide slope protection structure, comprising a mountain (1) and a tunnel body (2) passing through the mountain (1), characterized in that: The top of the tunnel main body (2) is fixedly connected to a buffer frame (3), the buffer frame (3) includes a support frame body (34), the middle of the support frame body (34) is fixedly connected to a plurality of damping buffers (35), the slope of the mountain (1) close to the tunnel main body (2) is provided with a mounting groove (5), the inner wall of the mounting groove (5) is fixedly connected to a guide rail (6), the center of the inner wall of the guide rail (6) is fixedly connected to a guide rod (7), the outer wall of the guide rod (7) is slidably connected to a slider (9), and the outer wall of the guide rod (7) is sleeved with a buffer spring. A spring (10) is provided, wherein the buffer spring (10) is located between a side of the slider (9) close to the buffer frame (3) and the inner wall of the guide track (6), and the slider (9) and the guide rod (7) damp the sliding. The top of the slider (9) is fixedly connected to a protective body (4), and the protective body (4) includes a cover plate (41) that fits the slope of the mountain (1). A gravel baffle (42) perpendicular to the cover plate (41) is fixedly connected to the side of the top of the cover plate (41) close to the buffer frame (3), and a guide ramp (43) is fixedly connected to the surface of the gravel baffle (42) close to the cover plate (41).

2. A highway tunnel portal section landslide slope protection structure according to claim 1, characterized in that: The buffer frame (3) comprises a fixed base (31), both sides of the top of the fixed base (31) are fixedly connected to support rods (33), the support frame body (34) is fixedly connected to one side of the support rod (33), and the fixed base (31) and the support rod (33) are fixedly connected to each other with a reinforcing rib (32) on the same diameter.

3. A highway tunnel portal section landslide slope protection structure according to claim 2, characterized in that: The support frame (34) is arranged in parallel with the gravel baffle (42), and the bottom of the gravel baffle (42) is pressed against the telescopic ends of a plurality of damping buffers (35).

4. A highway tunnel portal section landslide slope protection structure according to claim 3, characterized in that: Both sides of the bottom surface of the guide track (6) are fixedly connected with fixed ground spikes (8), and the fixed ground spikes (8) are fixedly connected to the mountain (1) by being driven into the mountain (1). The guide track (6) is fixedly connected to the mountain (1) via the fixed ground spikes (8).

5. The highway tunnel portal section landslide slope protection structure according to claim 4, characterized in that: The length of the buffer spring (10) after reset is adapted to the length of the guide rod (7), and the width of the protective body (4) is greater than the width of the tunnel body (2).

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