Landslide protection structure in a geological disaster area

Abstract

The application relates to a landslide protection structure in a geological disaster area, belonging to the technical field of improving the stability of a slope or an inclined plane, which comprises: arranged columns, the side of the columns facing the slope is paved with a steel net, and the columns are locked to the slope through anchor rods. The steel net has a distance between the bottom edge and the ground, the side of the adjacent columns facing the slope is provided with a baffle, the height of the baffle is greater than the distance between the bottom edge of the steel net and the ground; a plurality of guide pipes perpendicular to the steel net are arranged between the adjacent columns, the front end of the guide pipe protrudes from the steel net, the distance between the front end of the guide pipe and the steel net is greater than the distance between the baffle and the steel net, a steel rope is arranged in the guide pipe, the front end of the steel rope is connected with the baffle; the rear end of the steel rope is provided with an elastic piece, the elastic piece is located outside the rear end of the guide pipe, and when the bottom edge of the baffle abuts against the ground, the elastic piece is in a pre-compression state. The scheme is convenient for cleaning the accumulated falling stones, and the structure discharging the falling stones can also play a buffering protection role on the steel net.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of improving the stability of a slope or a hillside, and particularly relates to a landslide protection structure in a geological disaster area. BACKGROUND

[0002] A landslide refers to a process and phenomenon in which rock-soil bodies on a slope slide downward along a certain weak surface in a "whole" or partial manner while maintaining the structural integrity of the rock-soil bodies under the action of gravity and under the influence of factors such as natural geological action and human activities, and a landform formed thereby.

[0003] A landslide protection structure is a protective structure applied to a slope or a hillside to improve the stability of the slope or the hillside and to block falling rocks, landslides, and collapses that may occur. The landslide protection structure usually has two forms, namely, an active protection net and a passive protection net. The passive protection net is mainly composed of a steel wire rope net, an I-shaped steel column, an anchor rod, and a tension anchor rope.

[0004] Patent No. 202122833545.9 discloses a landslide protection net in a geotechnical engineering geological disaster area, which includes a prefabricated square mesh, a mesh connecting piece, and an anchor rod. The landslide protection net has the advantages of small construction difficulty, fast construction speed, firm structure, aesthetic appearance, durability, and convenient recycling of the protection net. However, such a protection structure still has some deficiencies, for example, when landslide rocks and the like rapidly impact the protection net, the impact force is completely applied to the protection net due to the absence of a buffer structure, which easily causes damage to the protection net. In addition, the bottom edge of such a protection structure is directly in contact with the ground to prevent falling rocks from leaking out from the bottom of the protection net. However, when a large amount of falling rocks accumulates on the side of the protection net close to the slope, regular cleaning must be performed, otherwise the entire protection structure will be crushed. Since the bottom of such a protection net is usually fixed to the ground, the bottom of the protection net needs to be removed before cleaning the falling rocks, and the bottom of the protection net needs to be fixed again after the cleaning is completed, which makes the process of cleaning the falling rocks very tedious. SUMMARY

[0005] To solve the deficiencies of the prior art, the present application provides a landslide protection structure in a geological disaster area, which facilitates the cleaning of accumulated falling rocks and simultaneously protects the steel net by means of a structure for discharging the falling rocks, thereby helping to improve the service life of the protection structure.

[0006] To achieve the purpose of the present application, the following scheme is adopted:

[0007] A landslide protection structure in a geological disaster area includes a plurality of columns arranged and fixed on the ground below a slope, a steel net laid on the side of the columns facing the slope, and anchor rods for locking each column to the slope.

[0008] The bottom edge of the steel net has a predetermined distance from the ground, and the side of the adjacent stand column facing the slope is provided with a baffle, the height of the baffle is greater than the distance between the bottom edge of the steel net and the ground;

[0009] A plurality of guide pipes perpendicular to the steel net are arranged between the adjacent stand columns, the front end of the guide pipe protrudes from the steel net and faces the side of the slope, the distance between the front end of the guide pipe and the steel net is greater than the distance between the baffle and the steel net, a steel rope is arranged in the guide pipe, the front end of the steel rope is connected with the baffle, and when the steel rope is pulled to the rear end, the baffle will move upward;

[0010] The rear end of the steel rope is provided with an elastic element, and the elastic element is located outside the rear end of the guide pipe, when the bottom edge of the baffle abuts against the ground, the elastic element is in a pre-compressed state.

[0011] The beneficial effects of the present application are that: the present application forms the discharge channel of the falling rock by arranging the baffle at the interval between the steel net and the ground, facilitates the discharge of the accumulated falling rock, prevents the damage of the protective structure due to excessive stress, and reduces the impact of the falling rock on the steel net by means of the steel rope lifting the baffle, thereby ensuring the service life of the protective structure; the steel rope adopts a single structure design, so that even if it is damaged, it can be quickly replaced, and the cost is relatively low, and the replacement process is faster. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings described herein are only for illustrating selected embodiments, rather than all possible embodiments, and are not intended to limit the scope of the present application.

[0013] Figure 1 An installation state schematic diagram of the present application is shown.

[0014] Figure 2 A state schematic diagram when the falling rock is accumulated is shown.

[0015] Figure 3 A partial structure diagram of the present application is shown.

[0016] Figure 4 A partial structure diagram of the present application after the baffle is lifted is shown.

[0017] Markings in the figure: stand column-1, guide pipe-11, reinforcing rod-12, sliding groove-13, steel net-2, anchor rod-3, baffle-4, foot plate-41, steel rope-5, elastic element-51, steel cable-52, pull rod-6, pull ring-61. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings, but the described embodiments of the present application are part of the embodiments of the present application, rather than all the embodiments.

[0019] As Figure 1 ,Figure 2 As shown in the drawings, a landslide protection structure in a geological disaster area comprises a plurality of columns 1 arranged and fixed on the ground below a slope, the columns 1 are usually fixed on the ground by cement pouring, or a cement pier is poured in advance on the ground, and then the columns 1 are fixed on the cement pier by a screw rod, a steel mesh 2 is laid on the side of the columns 1 facing the slope, each column 1 is locked to the slope by an anchor rod 3, specifically, the front end of the anchor rod 3 is fixed in an anchor hole formed in the slope by cement pouring, the rear end of the anchor rod 3 is connected to the middle or upper end of the column 1 by a steel wire rope, or the anchor rod 3 is arranged corresponding to the middle and upper end of the column 1 to further improve the stability of the protection structure.

[0020] As shown in the drawings, Figure 1 , Figure 3 and Figure 4 , the bottom edge of the steel mesh 2 has a predetermined distance from the ground, the side of the adjacent columns 1 facing the slope is provided with a baffle 4, and the height of the baffle 4 is greater than the distance between the bottom edge of the steel mesh 2 and the ground.

[0021] As shown in the drawings, Figures 1 to 4 , a plurality of guide pipes 11 perpendicular to the plane of the steel mesh 2 are arranged between the adjacent columns 1, the front end of the guide pipe 11 protrudes from the steel mesh 2 and faces the slope, and the distance between the front end of the guide pipe 11 and the steel mesh 2 is greater than the distance between the baffle 4 and the steel mesh 2, a steel rope 5 is arranged in the guide pipe 11, the front end of the steel rope 5 is connected to the baffle 4, and the baffle 4 will move upward when the steel rope 5 is pulled to the rear end.

[0022] As shown in the drawings, Figure 3 , Figure 4 , the rear end of the steel rope 5 is provided with an elastic member 51, and the elastic member 51 is located outside the rear end of the guide pipe 11. When the bottom edge of the baffle 4 abuts against the ground, the elastic member 51 is in a pre-compressed state. Specifically, the elastic member 51 is compressed between the rear end of the steel rope 5 and the rear end of the guide pipe 11, and at this time the baffle 4 shields the gap between the bottom edge of the steel mesh 2 and the ground, thereby preventing the falling rocks from falling out.

[0023] In this scheme, the front end of the guide pipe 11 faces the slope, the distance between the front end of the guide pipe 11 and the steel mesh 2 is greater than the distance between the baffle 4 and the steel mesh 2, and the baffle 4 is connected by the steel rope 5, so there is a certain angle and spacing between the steel rope 5 and the steel mesh 2, and the steel rope 5 is closer to the side of the slope, before the falling rocks hit the steel mesh 2, the steel rope 5 can achieve a certain blocking effect to reduce the impact force of the falling rocks on the steel mesh 2, when the steel rope 5 is impacted, the rear end of the steel rope 5 will inevitably generate a forward pulling force, thereby further compressing the elastic member 51 to play a buffering role, which can effectively reduce the impact on the steel rope 5 and prevent the steel rope 5 from breaking.

[0024] In the moment of rock impact on the steel rope 5, the steel rope 5 may be forced to generate upward pulling force on the baffle 4, in order to ensure the strength of the baffle 4, the baffle 4 is usually made of steel plate, so the baffle 4 itself has certain gravity, and when the buffering effect of the elastic member 51 exists, the impact force of the rock may not be able to make the baffle 4 move upward.

[0025] As a preferred solution, by arranging multiple pipes 11 and steel ropes 5 between the columns 1, the arrangement density of the steel ropes 5 is improved, and the probability of the steel ropes 5 blocking the rock is effectively improved, so as to reduce the impact on the steel net 2.

[0026] When the rock accumulated in the protection structure is cleaned, the baffle 4 is pulled upward by pulling the steel rope 5 backward, so that the rock is discharged from the space between the bottom edge of the steel net 2 and the ground; by controlling the height of the baffle 4, the speed of the rock discharge can be adjusted to ensure the safety of the cleaning process, and when the rock cleaning is completed, the pulling force on the steel rope 5 is released, and the baffle 4 automatically falls under the action of gravity and shields the space between the bottom edge of the steel net 2 and the ground again.

[0027] The pipe 11 is arranged at a middle height or above of the column 1, so that the pipe 11 has enough steel rope 5 between the end of the pipe 11 and the baffle 4, thereby improving the impact range of the steel rope 5.

[0028] Preferably, as shown in Figure 3 , Figure 4 , the adjacent columns 1 are connected by the horizontally arranged reinforcing rod 12, the pipe 11 is arranged in the reinforcing rod 12, the pipes 11 between the adjacent columns 1 are at the same horizontal height, the rear end of the steel rope 5 between the adjacent columns 1 is connected to the same pulling rod 6, the elastic member 51 is located between the pulling rod 6 and the corresponding pipe 11, and the pulling rod 6 is located outside the steel net 2, where the outside can be understood as the side opposite to the slope, by pulling the pulling rod 6 outward, multiple steel ropes 5 connected to the same baffle 4 can be pulled at the same time, so that the baffle 4 moves upward in parallel, and the operation is more convenient, and the reinforcing rod 12 not only meets the installation requirement of the pipe 11, but also connects the columns 1, thereby effectively improving the strength of the whole protection structure.

[0029] As a further preferred solution, as shown in Figure 4 , a pull ring 61 is arranged at the middle section of the pulling rod 6, so as to facilitate the hook of the traction device.

[0030] Preferably, as shown in Figure 3 , Figure 4 , the elastic member 51 is a cylindrical spring structure, which is sleeved on the corresponding steel rope 5.

[0031] Preferably, as shown in Figure 3As shown, the front end of the steel rope 5 is connected to the lower end of the baffle 4, so that the steel rope 5 covers the whole height range of the baffle 4, and the steel rope 5 can reduce the impact of the falling rocks on the baffle 4, prevent the baffle 4 from being deformed by the impact, and reduce the impact force transmitted from the baffle 4 to the column 1, so as to ensure the structural stability of the column 1.

[0032] Preferably, as shown in Figure 3 As shown, the steel ropes 5 between the adjacent columns 1 are connected to the side of the slope through a plurality of horizontally arranged steel cables 52, so that the steel ropes 5 and the steel cables 52 form a mesh structure, so as to increase the contact area with the falling rocks and improve the buffering effect on the steel net 2.

[0033] Preferably, the bottom of the front and rear ends of the guide pipe 11 is provided with a guide wheel for supporting the steel rope 5. When the steel rope 5 is pulled, the rolling friction between the steel rope 5 and the guide wheel can reduce the friction between the guide pipe 11 and the steel rope 5, and improve the smoothness of the steel rope 5 when moving in the guide pipe 11.

[0034] Preferably, as shown in Figure 3 , Figure 4 As shown, a plurality of foot plates 41 are arranged at the bottom of the baffle 4 and spaced apart from each other towards the side of the slope. The foot plates 41 are perpendicular to the baffle 4. The foot plates 41 have two main functions. One is to increase the downward pressure on the baffle 4 by using the falling rocks pressed on the foot plates 41, so as to fundamentally prevent the baffle 4 from being lifted by the impact of the steel rope 5, and make the steel rope 5 achieve buffering through the elastic member 51. The other is that after the falling rocks are cleaned, if the baffle 4 is not completely lowered, the impact of the falling rocks on the foot plates 41 can drive the baffle 4 to descend when the falling rocks occur, so as to save the human operation error.

[0035] As a preferred structure, the top surface of the foot plate 41 is inclined, so as to prevent the falling rocks from being accumulated on the foot plate 41 during the cleaning process.

[0036] Preferably, as shown in Figure 3 , Figure 4 As shown, the lower end of the column 1 is provided with a sliding groove 13 towards the side of the slope, and the end of the baffle 4 is slidingly arranged in the sliding groove 13.

[0037] The above only describes the preferred embodiments of the present application, and does not mean the only or limit the present application. Those skilled in the art should understand that various changes or equivalent replacements made to the present application without departing from the scope of the present application, all belong to the scope of protection of the present application.

Claims

1. A landslide protection structure for a geohazard area, comprising: Several columns (1) are arranged and fixed on the ground below the slope, a steel mesh (2) is laid on the side of the columns (1) facing the slope, each column (1) is locked to the slope through an anchor rod (3), characterized in that: The bottom edge of the steel mesh (2) has a predetermined distance from the ground, the side of the adjacent columns (1) facing the slope is provided with a baffle (4), the height of the baffle (4) is greater than the distance between the bottom edge of the steel mesh (2) and the ground; A plurality of guide pipes (11) perpendicular to the steel mesh (2) are arranged between the adjacent columns (1), the front end of the guide pipe (11) protrudes from the steel mesh (2) and faces the side of the slope, the distance between the front end of the guide pipe (11) and the steel mesh (2) is greater than the distance between the baffle (4) and the steel mesh (2), a steel rope (5) is arranged in the guide pipe (11), the front end of the steel rope (5) is connected to the baffle (4), and the baffle (4) will move upward when the steel rope (5) is pulled to the rear end; The rear end of the steel rope (5) is provided with an elastic element (51), the elastic element (51) is located outside the rear end of the guide pipe (11), and the elastic element (51) is in a pre-compressed state when the bottom edge of the baffle (4) abuts against the ground.

2. The landslide protection structure in a geological disaster area according to claim 1, characterized in that, The guide pipe (11) is arranged at a middle position of the height of the column (1).

3. The landslide protection structure in a geological disaster area according to claim 1 or 2, characterized in that, The adjacent columns (1) are connected through a horizontally arranged reinforcing rod (12), the guide pipe (11) is arranged in the reinforcing rod (12), the guide pipes (11) between the adjacent columns (1) are at the same horizontal height, the rear ends of the steel ropes (5) between the adjacent columns (1) are connected to the same pull rod (6), the elastic element (51) is located between the pull rod (6) and the corresponding guide pipe (11), and the pull rod (6) is located outside the steel mesh (2).

4. The landslide protection structure of claim 3, wherein, The elastic element (51) is a cylindrical spring structure, which is sleeved on the corresponding steel rope (5).

5. The landslide protection structure of claim 1, wherein, The front end of the steel rope (5) is connected to the lower end of the baffle (4).

6. The landslide protection structure in a geological disaster area according to claim 1 or 5, characterized in that, The steel ropes (5) between the adjacent columns (1) are connected through a plurality of horizontally arranged steel wires (52) on the side facing the slope.

7. The landslide protection structure of claim 1, wherein, The bottom of the guide pipe (11) is provided with a guide wheel at the front and rear ends, which is used to support the steel rope (5).

8. The landslide protection structure of claim 1, wherein, The bottom of the baffle (4) is provided with a plurality of foot plates (41) on the side facing the slope, the foot plates (41) are perpendicular to the baffle (4), and the top surface of the foot plate (41) is inclined.

9. The landslide protection structure of claim 1, wherein, The lower end of the column (1) is provided with a sliding groove (13) on the side facing the slope, and the end of the baffle (4) is slidingly arranged in the sliding groove (13).

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