Slope protection device

Abstract

The utility model discloses a side slope protection device, and belongs to the technical field of rockfall protection. Comprising a plurality of steel columns, protective nets, anchor ropes and pressure reduction rings, the steel columns are transversely arrayed and connected with the anchor ropes, one ends of the anchor ropes are connected with the steel columns, the other ends of the anchor ropes are anchored to a side slope, the pressure reduction rings are arranged on the anchor ropes, and one protective net is arranged between every two steel columns. The protective net is connected with the stand columns through buffer springs, dense buffer springs are arranged between the protective net and the stand columns, and a buffer spring is arranged at each mesh hole in the longitudinal direction of the side edge of the protective net; after the kinetic energy of falling rocks is transmitted to the twisted-pair hexagonal net, the twisted-pair hexagonal net further transmits the force to the buffer spring, and a part of the kinetic energy is reduced by the spring; due to the fact that the twisted-pair hexagonal net is in multi-point connection with the steel columns through the high-strength springs, after the twisted-pair hexagonal net is subjected to large kinetic energy, the twisted-pair hexagonal net is not prone to losing connection with the steel columns to be damaged or lose effect.

Description

Technical Field

[0001] The utility model relates to a slope protection device, in particular to a slope protection device, belonging to the technical field of falling rock protection. Background Art

[0002] The slope falling rock prevention grid is widely used for slope protection in railways, highways, mines, hydropower projects, etc. It is classified into active protection and passive protection. The active protection system is composed of various flexible nets mainly made of steel wire ropes, which cover and wrap the required protected slopes or rocks to limit the weathering, exfoliation or damage of the slope rock soil mass and the collapse of dangerous rocks (reinforcement effect), or control the falling rocks within a certain range of movement (enclosure effect). The passive protection system is mainly composed of four parts: steel wire rope net, annular net (an additional layer of wire grille is required when intercepting small falling rocks), fixing system (anchor rod, tension anchor rope, base and support rope), pressure relief ring and steel column. The steel column and the steel wire rope net are connected and combined to form a whole, forming a surface protection for the protected area, thus preventing the falling of the collapsed rock soil mass and playing a role in slope protection.

[0003] At present, in order to ensure the safety of fractured rock slopes, a passive protection grid is often arranged below the slope to protect the falling rocks, rolling stones and shallow collapses on the rock slope caused by weathering, rainwater or vibration. The potential energy of the rock mass at the top of the slope is relatively large. Once the boulders collapse, they have the conditions for potential energy to be converted into kinetic energy, and the geological disaster risk is serious. It is one of the most important internal factors affecting the stability of open-pit slopes. To ensure safety, a passive protection net is used to intercept the scattered rock blocks collapsing and rolling on the slope.

[0004] The existing slope passive protection device fixes the steel wire rope net on the two side installation columns, and uses the toughness of the protection net itself to buffer and dissipate the energy of the falling rocks. Although it can play a protective role, the buffer and pressure reduction effect is not good, resulting in a lack of a certain buffer mechanism when the falling rocks impact on the protection net, and the falling rocks cannot be continuously buffered. If the kinetic energy of the falling rocks is large, it may instantaneously damage the connection part between the steel column and the annular net (double-twisted hexagonal net). Although there are also some existing technologies that use spring buffers in the passive protection device, the effect is still not ideal. In addition, when the passive protection net is in use, the falling rocks rolling onto the net need to be removed in time to prevent the long-term static load from being applied to the protection net, resulting in fatigue damage of the protection net. If the falling rock prevention net bears the falling rocks for a long time, the net surface of the rock prevention net will become loose, resulting in a decline in the protection effect. In this case, the net may be loose for a long time, resulting in the falling rocks passing through the net surface without being intercepted or being more likely to tear and wash away the protection net, causing the falling rocks to fall, posing a great threat to the safety of the infrastructure and the ecological environment below the slope. Summary of the Invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a slope protection device.

[0006] The technical solution adopted by the present utility model is as follows: A slope protection device is designed and installed on the slope for protecting against falling rocks. It includes steel columns, a protection net, anchor ropes, and pressure relief rings. A plurality of steel columns are arranged horizontally in an array. Anchor ropes are connected to the steel columns. One end of each anchor rope is connected to a steel column, and the other end is anchored to the slope. Pressure relief rings are provided on the anchor ropes. It further includes buffer springs. A protection net is arranged between every two steel columns, and the protection net is connected to the columns through buffer springs. Dense buffer springs are arranged between the protection net and the columns. A buffer spring is provided at each mesh hole longitudinally on the side of the protection net.

[0007] Furthermore, this design also includes precast slabs. One precast slab is respectively arranged on the left and right sides of the protection net between every two steel columns. All the buffer springs on one side of the protection net are connected to the precast slab, and the precast slab is connected to the steel columns through multiple sets of bolt assemblies.

[0008] Furthermore, in this design, the steel columns are made of I-beams or H-beams, and a plurality of connection holes are longitudinally arranged in an array on their webs. Corresponding installation holes are opened on the precast slabs, and the bolt assemblies pass through the connection holes and the installation holes.

[0009] Furthermore, this design also includes an upper support rope and a lower support rope. The upper support rope and the lower support rope are respectively transversely arranged at the upper and lower ends of all the protection nets and steel columns, and the parts of the upper support rope and the lower support rope that extend beyond the steel columns on both edges are anchored to the slope. Pressure relief rings are provided on the parts of the upper support rope and the lower support rope that extend beyond the steel columns on both edges.

[0010] Furthermore, in this design, the anchor rope includes a first reinforcement rope and a second reinforcement rope. The first reinforcement rope is arranged on the steel columns on both edges, and the second reinforcement rope is arranged on the side elevations of all the steel columns. Two second reinforcement ropes arranged in a triangle are provided on each steel column, and adjacent two second reinforcement ropes of adjacent steel columns share an anchoring point.

[0011] Furthermore, this design also includes a side pull reinforcement rope and an intermediate reinforcement rope on the side opposite to the side where the second reinforcement rope is located. The side pull reinforcement rope is stretched between the steel columns on both edges, and two intermediate reinforcement ropes are stretched in a triangle on the steel columns in the middle.

[0012] Furthermore, in this design, the distance between every two steel columns is 10 meters, and the horizontal distance between the anchoring points of the anchor rope, the upper support rope, the lower support rope, and the side pull reinforcement rope and the steel columns is not less than the height of the steel columns.

[0013] Further, this design also includes an anti-loosening rope and an adjusting mechanism. The anti-loosening rope horizontally traverses the middle of all steel columns and the annular net. An adjusting mechanism is provided on one of the steel columns on both sides of the left and right edges. One end of the anti-loosening rope is anchored underground or connected to the edge steel column, and the other end is fixedly connected to the adjusting mechanism. The adjusting mechanism is used to tighten the anti-loosening rope.

[0014] Further, the adjusting mechanism of this design includes an inner cylinder, an outer cylinder, and an adjusting rod. The inner cylinder and the outer cylinder are fixed to the steel column. The adjusting rod extends into the inner cylinder and the outer cylinder. The inner cylinder is provided with a rectangular groove, and the outer cylinder is provided with a cylindrical groove. The outer cylinder is arranged outside the inner cylinder, and a limiting ring extends from the outer end of the outer cylinder towards the middle; the adjusting rod includes an anti-rotation part, a rotating part, and a limiting part. The anti-rotation part is a rectangular block fitted with the inner cylinder, the rotating part is a cylinder, and the limiting part is a flange ring. A limiting bolt is threadedly connected to the limiting ring, and the limiting bolt penetrates through the limiting ring and abuts against the limiting part. The anti-loosening rope is fixedly connected to the rotating part.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By arranging dense buffer springs between the protective net and the steel columns, this utility model of the present invention can better buffer and dissipate the energy of falling rocks, improve the protective effect, continuously buffer the falling rocks, and reduce the probability of the connection part between the steel columns and the annular net being damaged instantaneously by the falling rocks. The protective net is divided into blocks according to the spacing of the section steel columns, which is not only convenient for maintenance and replacement, but also has a more ideal protective effect. In addition, through the installation design of precast slabs, the protective net divided into blocks can be pre-set with all the buffer springs and precast slabs that need to be installed on it as prefabricated parts, which is convenient for construction and maintenance. Through the design of the anti-loosening rope and the adjusting mechanism, the slack net surface of the anti-rock net can be improved, the protective effect can be enhanced, and it is convenient for the staff to maintain the protective net.

[0017] When using this utility model of the present invention, after the kinetic energy of the falling rock is transmitted to the double-twisted hexagonal net (protective net), the double-twisted hexagonal net further transmits the force to the buffer spring, and a part of the kinetic energy is dissipated by the spring. Since the double-twisted hexagonal net and the steel column are connected by high-strength springs at multiple points, after the double-twisted hexagonal net receives a large amount of kinetic energy, it is not easy to lose connection with the steel column and be damaged and lose its function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a front elevation view of this utility model of the present invention.

[0020] Figure 2 This is a schematic top view of the present utility model (not looking down perpendicularly to the steel column, and the slope protection device is inclined).

[0021] Figure 3 This is a schematic cross-sectional view of the steel column and its attached components of the present utility model after assembly.

[0022] Figure 4 This is a schematic explosion view of the present utility model (a steel column with two precast slabs, that is, a steel column with protective nets installed on both sides).

[0023] Figure 5 is Figure 3 Schematic enlarged view of partial A.

[0024] Figure 6 This is a schematic diagram of the adjusting rod of the present utility model.

[0025] In the figure: 1. Steel column; 2. Protective net; 3. Decompression ring; 4. Buffer spring; 5. Precast slab; 6. Upper support rope; 7. Lower support rope; 8. First reinforcing rope; 9. Second reinforcing rope; 10. Side pull reinforcing rope; 11. Intermediate reinforcing rope; 12. Anti-loosening rope; 13. Inner cylinder; 14. Outer cylinder; 15. Adjusting rod; 16. Limit ring; 17. Anti-rotation part; 18. Rotating part; 19. Limiting part; 20. Limit bolt. Specific embodiments

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, if the terms "installation", "connection" and "connection" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Embodiment 1

[0029] Such as Figures 1-4As shown in the figure: A slope protection device is arranged on the slope for falling rock protection, including steel columns 1, protection nets 2 (ring nets, double-twisted hexagonal nets), anchor ropes, and pressure relief rings 3. Multiple steel columns 1 are arranged horizontally in an array. Anchor ropes are connected to the steel columns 1. One end of the anchor rope is connected to the steel column 1, and the other end is anchored to the slope. Pressure relief rings 3 are arranged on the anchor ropes. It also includes buffer springs 4. A protection net 2 is arranged between every two steel columns 1. The protection net 2 is divided into blocks according to the spacing of the section steel columns, which is convenient for construction and maintenance. The protection net 2 is connected to the columns through buffer springs 4. Dense buffer springs 4 are arranged between the protection net 2 and the columns. A buffer spring 4 is arranged at each mesh hole longitudinally on the side of the protection net 2. After the kinetic energy of the falling rock is transmitted to the protection net 2, the protection net 2 further transmits the force to the buffer springs 4, and part of the kinetic energy is dissipated by the springs. Since the protection net 2 and the steel column 1 are connected at multiple points by high-strength springs, after the protection net 2 receives a large amount of kinetic energy, it is not easy to lose connection with the steel column 1 and be damaged and lose its function.

[0030] Embodiment 2

[0031] This embodiment further optimizes the design of the slope protection device on the basis of Embodiment 1. Specifically:

[0032] For the slope protection device described in this embodiment, it further includes precast slabs 5. A precast slab 5 is arranged on each of the left and right sides of the protection net 2 between every two steel columns 1. All the buffer springs 4 on one side of the protection net 2 are welded to the precast slab 5. The precast slab 5 and the steel column 1 are connected by multiple groups of bolt assemblies. All the buffer springs 4 and precast slabs 5 can be installed on both sides of each protection net 2 in advance to form prefabricated components. This process can be completed on-site or in the factory, and then the prefabricated components are bolted to the steel column 1, which is convenient for the disassembly, installation, and maintenance of the protection net 2, can improve the construction efficiency, and the precast slab 5 can also improve the anti-deformation strength of the steel column 1.

[0033] In this embodiment, the steel column 1 is made of I-beam or H-beam, which is convenient for obtaining materials and has good strength. Multiple connection holes are arranged longitudinally in the web of the steel column 1. Corresponding installation holes are opened on the precast slab 5 (rectangular slab). The bolt assemblies pass through the connection holes and the installation holes, and the structure is simple and practical.

[0034] The buffer spring 4 and the precast slab 5 belong to rigid connection, and the buffer spring 4 is connected to the mesh hole of the protection net 2, belonging to flexible connection.

[0035] Embodiment 3

[0036] This embodiment further optimizes the design of the slope protection device on the basis of Embodiment 2. Specifically:

[0037] The slope protection device described in this embodiment further includes an upper support rope 6 and a lower support rope 7. The upper support rope 6 and the lower support rope 7 are respectively transversely arranged at the upper and lower ends of all the protection nets 2 and the steel columns 1. The parts of the upper support rope 6 and the lower support rope 7 that extend beyond the steel columns 1 on both sides of the edge are fixedly connected to the slope by anchoring. Pressure relief rings 3 are arranged on the parts of the upper support rope 6 and the lower support rope 7 that extend beyond the steel columns 1 on both sides of the edge, which improves the impact resistance and the support and fixation effect of the whole device.

[0038] Embodiment 4

[0039] This embodiment further optimizes the design of the slope protection device on the basis of Embodiment 3. Specifically:

[0040] The anchor rope includes a first reinforcement rope 8 and a second reinforcement rope 9. The first reinforcement rope 8 is arranged on the steel columns 1 on both sides of the edge, and the second reinforcement rope 9 is arranged on the side facades of all the steel columns 1. Two second reinforcement ropes 9 arranged in a triangle are arranged on each steel column 1, and the adjacent two second reinforcement ropes 9 of adjacent steel columns 1 share an anchoring point, which improves the support and fixation effect of the steel columns 1.

[0041] The slope protection device described in this embodiment further includes a side pull reinforcement rope 10 and an intermediate reinforcement rope 11 on the side opposite to the side where the second reinforcement rope 9 is located. The side pull reinforcement rope 10 is stretched on the steel columns 1 on both sides of the edge, and two intermediate reinforcement ropes 11 are stretched in a triangle on the steel columns 1 in the middle, which further improves the support and fixation effect of the steel columns 1.

[0042] Embodiment 5

[0043] This embodiment further optimizes the design of the slope protection device on the basis of Embodiment 4. Specifically:

[0044] The distance between two adjacent steel columns 1 is 10 meters. The horizontal distance between the anchoring points of the anchor rope, the upper support rope 6, the lower support rope 7 and the side pull reinforcement rope 10 and the steel columns 1 is not less than the height of the steel columns 1, which is reasonably arranged to ensure the anchoring effect of each steel rope.

[0045] Embodiment 6

[0046] This embodiment further optimizes the design of the slope protection device on the basis of Embodiment 5. Specifically:

[0047] The slope protection device described in this embodiment also includes an anti-loosening rope 12 and an adjustment mechanism. The anti-loosening rope 12 horizontally crosses all the steel columns 1 and the middle of the annular net. The adjustment mechanism is set on one of the steel columns 1 on the left and right edges. One end of the anti-loosening rope 12 is anchored underground (not shown in the drawings) or connected to the edge steel column 1, and the other end is fixedly connected to the adjustment mechanism. The adjustment mechanism is used to tighten the anti-loosening rope 12. When the protective net 2 is deformed and relaxed from the middle due to the impact of falling rocks, the anti-loosening rope 12 is tightened by the adjustment mechanism to improve the relaxation state of the protective net 2 and improve its protective effect.

[0048] This embodiment provides a better adjustment mechanism structure, such as Figures 5-6 As shown: the adjusting mechanism includes an inner cylinder 13, an outer cylinder 14 and an adjusting rod 15, the inner cylinder 13 and the outer cylinder 14 are fixed on the steel column 1, the adjusting rod 15 extends into the inner cylinder 13 and the outer cylinder 14, the inner cylinder 13 is provided with a rectangular groove, the outer cylinder 14 is provided with a cylindrical groove, the outer cylinder 14 is arranged outside the inner cylinder 13, and a limiting ring 16 extends from the outer end of the outer cylinder 14 to the middle; the adjusting rod 15 includes an anti-rotation part 17, a rotating part 18 and a limiting part 19, the anti-rotation part 17 is a rectangular block embedded with the inner cylinder 13, the rotating part 18 is a cylinder, the limiting part 19 is a flange ring, the limiting bolt 20 is threadedly connected to the limiting ring 16, the limiting bolt 20 passes through the limiting ring 16 and abuts on the limiting part 19, and the anti-loosening rope 12 is fixedly connected to the rotating part 18.

[0049] When the anti-loosening rope 12 needs to be tightened, the limiting bolt 20 is loosened, and the adjusting rod 15 is pulled outward until the anti-rotation portion 17 is separated from the inner cylinder 13, and under the action of the limiting portion 19 and the limiting ring 16, the adjusting rod 15 cannot be separated from the outer cylinder 14, and the adjusting rod 15 can be rotated in the outer cylinder 14, and the adjusting rod 15 is rotated to wind the loose part of the anti-loosening rope 12 around the adjusting rod 15, and then the adjusting rod 15 is inserted into the inner cylinder 13 (it should be noted that when the adjusting rod 15 is fully inserted, it is still partially exposed outside the outer cylinder 14, and the exposed adjusting rod 15 is wound with the anti-loosening rope 12), and the limiting bolt 20 is tightened so that the adjusting rod 15 will not be disengaged and rotated outward. The anti-loosening rope 12 and the adjustment mechanism can also be arranged at the upper and lower parts of the protective net 2 to more comprehensively improve the loosening problem of the protective net 2.

[0050] In addition, in the description of the present utility model, unless otherwise specified, the terms "multiple", "multiple roots", and "multiple groups" mean two or more, and the terms "several", "several roots", and "several groups" mean one or more. In the description of the present utility model, it should be noted that for the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0051] The specific embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model.

Claims

1. A slope protection device, arranged on a slope for rockfall protection, comprising a steel column, a protection net, an anchor rope and a pressure relief ring, wherein a plurality of steel columns are arranged in a transverse array, an anchor rope is connected to the steel column, one end of the anchor rope is connected to the steel column, and the other end is anchored to the slope, and a pressure relief ring is arranged on the anchor rope, characterized in that: It also includes buffer springs. A protective net is arranged between each of the steel columns. The protective net is connected to the columns through buffer springs. Dense buffer springs are arranged between the protective net and the columns. A buffer spring is arranged at each mesh hole in the longitudinal direction of the side of the protective net.

2. A slope protection device according to claim 1, characterized in that: It also includes a prefabricated plate. A prefabricated plate is respectively arranged on the left and right sides of the protective net between the steel columns. All buffer springs on one side of the protective net are connected to the prefabricated plate. The prefabricated plate and the steel column are connected by multiple sets of bolt assemblies.

3. A slope protection device according to claim 2, characterized in that: The steel column is made of I-beam or H-beam, and a plurality of connection holes are arranged in a longitudinal array on the web thereof. The prefabricated plate is provided with corresponding mounting holes, and the bolt assembly is passed through the connection holes and the mounting holes.

4. A slope protection device according to claim 3, characterized in that: It also includes an upper supporting rope and a lower supporting rope, which are respectively arranged transversely at the upper and lower ends of all protective nets and steel columns, and the parts of the upper supporting rope and the lower supporting rope that extend beyond the steel columns on both sides of the edge are anchored to the slope, and pressure relief rings are arranged on the parts of the upper supporting rope and the lower supporting rope that extend beyond the steel columns on both sides of the edge.

5. A slope protection device according to claim 4, characterized in that: The anchor rope includes a first reinforcement rope and a second reinforcement rope. The first reinforcement rope is arranged on the steel columns on both sides of the edge, the second reinforcement rope is arranged on the side facades of all steel columns, and two second reinforcement ropes arranged in a triangle are arranged on each steel column, and two adjacent second reinforcement ropes of adjacent steel columns share an anchoring point.

6. A slope protection device according to claim 5, characterized in that: It also includes a side-pull reinforcement rope and a middle reinforcement rope located on the side opposite to the second reinforcement rope. The side-pull reinforcement ropes are pulled on the steel columns on both sides of the edge, and two middle reinforcement ropes are pulled in a triangle shape on the steel column in the middle.

7. A slope protection device according to claim 6, characterized in that: The distance between each of the steel columns is 10 meters, and the horizontal distance between the anchor points of the anchor rope, upper support rope, lower support rope and side-pull reinforcement rope and the steel columns is not less than the height of the steel columns.

8. A slope protection device according to any one of claims 1 to 7, characterized in that: It also includes an anti-loosening rope and an adjusting mechanism. The anti-loosening rope horizontally crosses all steel columns and the middle of the ring net. The adjusting mechanism is arranged on one of the steel columns on the left and right edges. One end of the anti-loosening rope is anchored underground or connected to the edge steel column, and the other end is fixedly connected to the adjusting mechanism. The adjusting mechanism is used to tighten the anti-loosening rope.

9. A slope protection device according to claim 8, characterized in that: The adjusting mechanism comprises an inner cylinder, an outer cylinder and an adjusting rod, the inner cylinder and the outer cylinder are fixed on a steel column, the adjusting rod extends into the inner cylinder and the outer cylinder, the inner cylinder is provided with a rectangular groove, the outer cylinder is provided with a cylindrical groove, the outer cylinder is arranged outside the inner cylinder, and a limiting ring extends from the outer end of the outer cylinder to the middle; the adjusting rod comprises an anti-rotation part, a rotating part and a limiting part, the anti-rotation part is a rectangular block embedded with the inner cylinder, the rotating part is a cylinder, the limiting part is a flange ring, a limiting bolt is threadedly connected to the limiting ring, the limiting bolt passes through the limiting ring and abuts against the limiting part, and the anti-loosening rope is fixedly connected to the rotating part.

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