A collapsible zone movable protective shed and a method for preventing dangerous rockfall

Abstract

The application provides a collapsible area movable protection shed and a dangerous rock falling prevention method. The protection shed comprises an arch unit, a moving unit and a protection unit. The arch unit comprises a plurality of arches which are connected and arranged at intervals. The moving unit comprises a flat plate, a rolling body and a pulley. The flat plate is arranged at the bottom of the arch unit, the rolling body is arranged below the flat plate, and the pulley is arranged at the side of the arch foot. The protection unit comprises a protection plate and a rebound net. The protection plate is arranged on the outer surface of the arch unit, and the rebound net is arranged above the arch top of the arch unit. The method is realized by the protection shed, and comprises the following steps: pouring a concrete strip foundation; the arch foot is arranged in the concrete strip foundation, the rolling body is arranged in the concrete strip foundation when the protection shed needs to be moved, and the protection shed slides along the strip foundation; the protection shed is stopped at a predetermined position, a throwing support is arranged on the far side of the mountain of the protection shed, and a limiting clamp is arranged on the arch foot. The protection shed can be used for the protection of the construction of a high and steep collapse area. The method can realize all-around and whole-process protection.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, specifically to a movable protective shed for collapse zones and a method for preventing falling rocks. Background Technology

[0002] Currently, there are three main types of construction protection for steep landslide areas: First, manual removal of loose rocks and boulders. This method primarily involves manually removing loose, movable rocks and boulders from the surface. However, manual removal is greatly influenced by the subjective judgment of the workers and has certain limitations. Second, active protective netting is used to cover the loose rocks and boulders. This method uses active protective netting to cover the area where loose rocks are distributed, thus preventing large-scale rockfalls. However, because the active protective netting is made of wire mesh and the distribution of loose rocks is often undulating, some large-diameter holes often remain at the boundary of the active protective netting, allowing smaller rocks and boulders to fall through these holes. Third, passive protective netting is used for long-distance isolation. This method is used below areas with gentler slopes where loose rocks can be intercepted when they slide down from above.

[0003] The three methods mentioned above all have limitations in protecting areas prone to landslides, failing to provide comprehensive and continuous protection and posing significant safety hazards to workers operating below such areas. Therefore, providing a mobile protective shed for landslide areas and a method for preventing falling rocks is of great importance. Summary of the Invention

[0004] The purpose of this invention is to address at least one of the aforementioned shortcomings of the existing technology. For example, one objective of this invention is to provide a structurally sound, movable protective shed for construction protection in areas prone to rockfalls. Another objective of this invention is to provide a method for preventing rockfalls and providing comprehensive, end-to-end safety protection for construction operations below steep, dangerous rockfall areas.

[0005] To achieve the above objectives, the present invention provides a movable protective shed for landslide areas. The protective shed may include an arch frame unit, a moving unit, and a protective unit. The arch frame unit includes multiple arch frames that are longitudinally connected and spaced apart from each other. The moving unit includes a flat plate, a rolling element, and pulleys. The flat plate is located at the bottom of the arch frame unit, the rolling element is located below the flat plate, and the pulleys are located on the side of the arch foot of the arch frame. The protective unit includes a protective plate and a spring net. The protective plate is located on the outer surface of the arch frame unit, and a spring net post is set above the arch top of the arch frame unit. The spring net is set above the arch frame unit through the spring net post and is perpendicular to the spring net post.

[0006] According to one or more exemplary embodiments of one aspect of the present invention, the arch frames may be spaced 0.5 to 2m apart, and the arch frames may be longitudinally connected by angle steel, with the circumferential spacing between the angle steel being 1 to 3m.

[0007] According to one or more exemplary embodiments of one aspect of the present invention, the rolling elements may be uniformly distributed below the flat plate, and the rolling elements may include steel balls.

[0008] According to one or more exemplary embodiments of one aspect of the present invention, the steel balls can be grouped into sets of 10 to 30, and the longitudinal and transverse spacing of each steel ball can be 1 to 3 cm; when the protective shed moves, one or more sets of steel balls can be set to achieve movement, and the spacing between each set of steel balls can be 0.5 to 2 m.

[0009] According to one or more exemplary embodiments of one aspect of the present invention, the diameter of the steel ball may be 1 to 3 cm, and its outer surface may be coated with butter.

[0010] According to one or more exemplary embodiments of one aspect of the present invention, the longitudinal and transverse spacing of the bouncy net posts can be 1 to 3 m, and multiple layers of bouncy nets can be spaced apart on the bouncy net posts, with the bouncy nets spaced apart from each other, and the bouncy nets and the protective plate spaced apart.

[0011] According to one or more exemplary embodiments of one aspect of the present invention, a support can be provided on one side of the protective shed, and the spacing of the support can be 0.5 to 1.5 m / row; limit clips can be provided on the arch feet at the front and rear of the arch frame unit.

[0012] According to one or more exemplary embodiments of one aspect of the present invention, the protective shed may further include a traction unit, the traction unit including a chain hoist and an iron chain, the chain hoist being arranged in front of the protective shed and hooked to multiple arch frames, and the iron chain being arranged in the rear of the protective shed and hooked to multiple arch frames.

[0013] Another aspect of the present invention provides a method for preventing rockfalls, which can be achieved by a movable protective shed for landslide areas as described above. The method may include the following steps: pouring a concrete strip foundation along the entire length of the construction area; setting the movable protective shed for landslide areas in the concrete strip foundation, such that the arch foot of the arch frame is located inside the concrete strip foundation, and the pulley is in contact with the inner side of the concrete strip foundation; when the protective shed needs to be moved, laying rolling bodies on the bottom surface of the concrete strip foundation along the direction of movement, and the protective shed slides along the concrete strip foundation; installing limiters at the displacement stop point in the direction of movement, and stopping the protective shed when it moves to a predetermined position; setting out supports on the far side of the protective shed, and setting limiters on the arch foot of the protective shed to restrict sliding.

[0014] According to one or more exemplary embodiments of another aspect of the present invention, the 0.5 to 1.2m portion of the arch foot may be located within the concrete strip foundation; the pulley may be disposed at a distance of 8 to 15cm below the top surface of the concrete strip foundation from the arch frame.

[0015] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0016] (1) The mobile protective shed for collapse areas proposed in this invention can be used for construction protection in areas with unstable rock collapse.

[0017] (2) The method for preventing rockfalls proposed in this invention can provide all-round and full-process protection for workers and equipment when working below steep and dangerous rockfall areas, greatly reducing safety hazards. Attached Figure Description

[0018] The above and other objects and features of the present invention will become clearer from the following description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic diagram of a movable protective shed for landslide areas, representing an exemplary embodiment of the present invention, is shown.

[0020] Figure 2 Another structural schematic diagram of a movable protective shed for landslide areas, which is an exemplary embodiment of the present invention, is shown.

[0021] Figure 3 A schematic diagram of the structure at the arch foot of a movable protective shed for landslide areas, according to an exemplary embodiment of the present invention, is shown.

[0022] Figure 4 It shows Figure 1 Enlarged view of section B;

[0023] Figure 5 A schematic diagram of the limiting card of the present invention is shown;

[0024] Figure 6 Another structural schematic diagram of the limiting card of the present invention is shown.

[0025] Figure label:

[0026] 1-Arch frame, 2-Pulley, 3-Concrete strip foundation, 4-Rolling element, 5-Angle steel, 6-Limiting clip, 7-Spreading support, 81-Flat plate, 82-Protective plate, 9-Bounce net, 10-Chain hoist, 11-Iron chain, 12-Bounce net post. Detailed Implementation

[0027] In the following description, a movable protective shed for landslide areas and a method for preventing falling rocks will be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0028] In the description of this application, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] The terms "first," "second," etc., are used merely for ease of description and distinction, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] First exemplary embodiment

[0032] This exemplary embodiment provides a movable protective shed for landslide areas.

[0033] Figure 1 A schematic diagram of a movable protective shed for landslide areas, representing an exemplary embodiment of the present invention, is shown. Figure 2 Another structural schematic diagram of a movable protective shed for landslide areas, which is an exemplary embodiment of the present invention, is shown. Figure 3 A schematic diagram of the structure at the arch foot of a movable protective shed for landslide areas, according to an exemplary embodiment of the present invention, is shown. Figure 4 It shows Figure 1 Enlarged view of section B;

[0034] Figure 5 A schematic diagram of the limiting card of the present invention is shown; Figure 6 Another structural schematic diagram of the limiting card of the present invention is shown below. (Followed by...) Figures 1 to 6This describes a movable protective shed for landslide areas in this exemplary embodiment. It should be noted that the front of the protective shed described in the specification is... Figure 2 To the right of the center, behind the protective shed is Figure 2 The left side of the middle; Figure 1 The left side is the distant mountain side. Figure 1 The right side is the side closest to the mountain.

[0035] like Figure 1 As shown, the movable protective shed in the collapse area mainly includes an arch frame unit, a moving unit, and a protective unit.

[0036] The arch frame unit comprises multiple arch frames 1 that are longitudinally connected and spaced apart, with a spacing of 0.5 to 2 meters between them, such as 1 meter, 1.5 meters, or 2 meters. Each arch frame can be arranged parallel to each other. The moving unit includes a flat plate 81, rolling elements 4, and pulleys 2. The flat plate 81 is located at the bottom of the arch frame unit and can be made of steel with a thickness of 10 to 20 mm, such as 12 mm, 16 mm, or 18 mm. The rolling elements 4 are located below the flat plate 81, and the pulleys 2 are arranged symmetrically on the sides of the arch feet of the arch frames 1. The protective canopy can slide through the moving unit. The protective unit includes a protective plate 82 and a spring net 9. The protective plate 82 is located on the outer surface of the arch frame unit, and a spring net post 12 is installed above the arch top of the arch frame unit. The spring net 9 is installed above the arch frame unit through the spring net post 12 and is perpendicular to the spring net post 12.

[0037] In this exemplary embodiment, the arch frame may include a steel arch frame assembled from I18 I-beams.

[0038] In this exemplary embodiment, as Figure 1 As shown, the arch frames 1 can be longitudinally connected by angle steel 5, and the connection method can be welding. The circumferential spacing between each angle steel can be set to 1 to 3m, for example 2m.

[0039] Furthermore, angle steel may include ∟63*40*7 angle steel.

[0040] In this exemplary embodiment, as Figure 3 As shown, the rolling elements 4 can be evenly distributed under the flat plate below the arch frame 1, and the longitudinal and transverse spacing of each rolling element can be 1 to 3 cm, for example 2 cm.

[0041] Furthermore, the rolling element may include steel balls.

[0042] Furthermore, steel balls can be grouped into sets of 10 to 30, such as 14, 20, or 26 balls. The longitudinal and transverse spacing between each steel ball in each set can be 1 to 3 cm. When the protective canopy is moved, one or more sets of steel balls can be placed under the flat plate to enable movement. Here, the spacing between each set of steel balls can be 0.5 to 2 meters, such as 0.8 meters, 1 meter, or 1.6 meters. This arrangement utilizes the sliding motion between the steel balls while still meeting load-bearing requirements.

[0043] Furthermore, the diameter of the steel ball can be 1–3 cm, for example, 2 cm. The outer surface of the steel ball can be coated with butter. Here, the thickness of the butter coating is not less than 1 cm.

[0044] In this exemplary embodiment, as Figure 3 As shown, a pulley 2 can be installed on each of the left and right sides of the arch foot of the arch frame 1.

[0045] In this exemplary embodiment, as Figure 1 As shown, the protective plate 82 can be installed on the outer surface of the arch frame unit, 8-15cm from the top surface of the concrete strip foundation 3. That is, steel plates are fully laid from left to right at 8-15cm from the top surface of the concrete strip foundation at the outer edge of the arch frame, for example, 10cm, 12cm, and 15cm. Here, the concrete strip foundation is poured along the construction area, and the concrete strip foundation is set along the entire length of the construction area, with the protective canopy arch foot set in the concrete strip foundation.

[0046] Furthermore, the protective plate may include a steel plate with a thickness of 4–8 mm, such as 5 mm, 6 mm, or 7 mm. The steel plate may be welded to the arch frame.

[0047] In this exemplary embodiment, multiple bouncy net posts can be installed above the arch of the arch frame unit. The longitudinal and transverse spacing of the bouncy net posts can be 1 to 3 meters, for example, 2 meters. Here, ∟63*40*7 angle steel can be welded above the arch of the arch frame unit as bouncy net posts. Multiple layers of bouncy nets can be installed on the bouncy net posts at intervals, with the bouncy nets spaced apart from each other and spaced apart from the protective plate. The multiple layers of bouncy nets can be arranged parallel to each other.

[0048] Furthermore, two layers of bouncy netting can be installed at intervals on the bouncy netting posts. The first layer of bouncy netting is closer to the arch frame and is located 0.5 to 1.5m above the arch frame, for example, 1m. The second layer of bouncy netting is located above the first layer of bouncy netting and is 1 to 3m away from the first layer of bouncy netting, for example, 2m.

[0049] Furthermore, the bouncing net may include a close-mesh metal safety net, which can be used as an auxiliary measure to enhance the impact resistance of the arch frame.

[0050] In this exemplary embodiment, as Figure 1As shown, a bracing 7 can be installed on one side of the protective canopy to enhance the overall stability of the arch frame 1. The spacing of the bracing can be 0.5 to 1.5 m / row, for example, 0.8 m / row, 1 m / row, or 1.2 m / row. When the protective canopy is put into operation, the bracing is set on the far side of the protective canopy.

[0051] Furthermore, the bracing may include φ76*6 steel pipes.

[0052] In this exemplary embodiment, as Figure 2 As shown, the arch feet at the front and rear of the arch frame unit can be provided with, for example, Figure 5 and 6 The limit clamps 6 shown restrict the lateral and transverse displacement of the protective canopy. Specifically, limit clamps are installed at the two arch feet of the foremost arch frame. The limit clamps are in contact with the arch frame.

[0053] In this exemplary embodiment, the protective shed may further include a traction unit, which pulls the shed during movement to assist in the overall movement of the shed. The traction unit includes a chain hoist and a chain. Figure 2 As shown, the chain hoist 10 is installed in front of the protective shed and is attached to multiple arch frames 1. The iron chain 11 is installed behind the protective shed and is attached to multiple arch frames 1.

[0054] Furthermore, two sets of chain hoists can be installed, symmetrically arranged on the protective shed. Two sets of iron chains can also be installed, symmetrically arranged on the protective shed.

[0055] Furthermore, the chain hoist can be used to attach to at least multiple arch frames, for example, five arch frames. The chain can be positioned in the middle of the arch frame and can be used to attach to multiple arch frames, for example, five arch frames.

[0056] Second exemplary embodiment

[0057] This exemplary embodiment provides a method for preventing falling rocks from dangerous rocks.

[0058] The method for preventing rockfalls can be achieved through the movable protective shed for landslide areas described in the first exemplary embodiment above. The method may include the following steps:

[0059] Concrete strip foundations were poured along the entire length of the construction area.

[0060] The movable protective shed in the collapse area is set in a concrete strip foundation, so that the arch foot of the arch frame is located inside the concrete strip foundation, and the pulley is in contact with the inner side of the concrete strip foundation.

[0061] When the protective canopy needs to be moved, rolling elements are laid on the bottom surface of the concrete strip foundation along the direction of movement, allowing the canopy to slide along the concrete strip foundation. At the same time, limit clamps are installed at the displacement stop points in the direction of movement to prevent overturning.

[0062] The protective shed is moved to the designated position and stopped. A support is set on the far side of the protective shed, and a limit card is set on the arch foot of the protective shed to restrict sliding.

[0063] In this exemplary embodiment, the length of the arch foot located within the concrete strip foundation can be 0.5 to 1.2 m, for example, 0.7 m.

[0064] In this exemplary embodiment, the pulley can be positioned 8–15 cm below the top surface of the concrete strip foundation of the arch frame. For example... Figure 4 As shown, the pulley is set 10cm below the top surface of the concrete strip foundation of the arch frame.

[0065] Third Exemplary Example

[0066] This exemplary embodiment provides another method for preventing falling rocks.

[0067] The method for preventing rockfalls in this exemplary embodiment can be implemented using the movable protective shed for landslide areas described in the first exemplary embodiment above.

[0068] In this exemplary embodiment, a movable protective shed for the collapse zone can be gradually constructed and built after the concrete strip foundation has been formed. Specific construction steps for the method of preventing rockfalls may include:

[0069] S1. Pour concrete strip foundation.

[0070] Concrete strip foundations are poured along the construction area according to the actual structural form of the construction environment, and the concrete strip foundations are set along the entire length of the construction area.

[0071] S2. Fabricate I-beam arch frames and weld pulleys.

[0072] Outside the construction area, the I-beams are processed according to the actual structural form of the construction environment, such as arch or gate shape. The steel arch frame is assembled in multiple units using I-beams (I18), for example, in 6, 7 or 8 units, with an installation spacing of 0.5 to 2m.

[0073] Pullers are installed on both sides of the arch foot of the arch frame, allowing the auxiliary frame to slide along the concrete strip foundation. Specifically, the pulleys are welded to each arch frame 8-15cm below the top surface of the concrete strip foundation.

[0074] S3. Lay steel balls and steel plates inside the concrete strip foundation.

[0075] 10-30 steel balls (1-3cm in diameter, wrapped in grease, with a coating thickness of not less than 1cm) are laid in the center of the bottom of the arch frame. Along the starting point of the construction area, 10-30 steel balls are laid every 0.5-2m in the concrete strip foundation, with the steel balls installed at intervals of 1-3cm in both the longitudinal and transverse directions.

[0076] After the steel balls are laid, a steel plate is laid on top of them.

[0077] S4. Assemble the I-beam arch frame and weld the angle steel, and install the limit clamps.

[0078] The arch foot is inserted 0.5–1.2m into the concrete strip foundation. I-beams are assembled one by one above the steel plate at intervals of 0.5–2m. Between every two arch frames (adjacent I-beams), longitudinal connections are made using ∟63*40*7 angle steel, welded together, with circumferential intervals of 1–3m. During installation (referring to the longitudinal connection between arch frames using angle steel), limit clamps are used to prevent arch frame displacement, and φ76*6 steel pipes are used for temporary support. The purpose of using outriggers and limit clamps during the temporary support stage is primarily to prevent overturning or displacement of individual arch frames during erection.

[0079] Specifically, after the arch frame system is formed, φ76*6 steel pipe supports are installed along the far side of the mountain, with a spacing of 0.5-1.5m per support. Limiting clips are installed at both ends of the arch frame to prevent lateral and transverse displacement of the arch frame system. Here, "both ends" refers to the two ends of the overall arch frame system, namely the high-mileage end and the low-mileage end; the locations of the supports and limiting clips are the same during the temporary support stage and the later stage after the system is formed. The purpose of installing supports and limiting clips after the protective canopy arch frame system is formed is mainly to increase the overall stability of the system.

[0080] S5. Protective plates are laid on the outer edge of the I-beam arch frame and welded firmly to the I-beam arch frame.

[0081] After the arch frame system is reinforced (referring to step S4 where the bracing and limiting clips are installed), steel plates are laid from left to right along the outer edge of the arch frame, starting 8-15cm from the top surface of the concrete strip foundation. The steel plates are welded to the arch frame. This pre-existing distance prevents the steel plates from rubbing against the concrete strip foundation, thus avoiding increased difficulty in movement.

[0082] Specifically, a 4-8mm thick steel plate is laid from left to right at a distance of 8-15cm from the top surface of the concrete strip foundation on the outer edge of the arch frame as a protective plate.

[0083] S6. Install the angle steel spring net posts and weld them firmly to the protective plate.

[0084] After the protective panels are laid, ∟63*40*7 angle steel is installed from left to right above the arch of the arch frame as the uprights of the bouncy net. The uprights are firmly welded to the protective panels, with a longitudinal and transverse spacing of 100-300cm.

[0085] S7. Lay out the spring netting and complete the construction of the protective canopy.

[0086] After the elastic netting posts are installed, lay one layer of elastic netting 1m and 3m above the center of the arch frame to complete the construction of the protective canopy.

[0087] In other words, a double-layered spring net is installed above the protective plate, with a spacing of 200cm between the spring nets, and the lower layer of spring net is 100cm away from the arch frame system.

[0088] S8. Methods / processes for using protective sheds to prevent falling rocks.

[0089] After the spring netting is installed, the entire protective canopy system is complete. When the protective canopy needs to be moved, steel balls are laid at intervals along the direction of movement on the concrete strip foundation, and limit clamps are installed at the displacement stop points in the direction of movement. The purpose of setting the limit clamps here is to prevent the protective canopy from overturning due to excessive movement speed. During the movement, a chain hoist is used to pull the protective canopy at the moving end of the canopy to assist in the overall movement, and an iron chain is used to pull the protective canopy at the other end of the canopy.

[0090] When the protective shed does not need to be moved, the two ends of the protective shed are fixed with limit clips.

[0091] In summary, the advantages proposed by this invention include at least one of the following:

[0092] (1) The mobile protective shed for the collapse area proposed in this invention can be used for protection when production operations are carried out below steep and dangerous rock areas, so as to avoid damage to the workers and equipment below caused by falling objects and falling rocks.

[0093] (2) Based on the design characteristics of this tunnel, the present invention proposes a movable protective shed for the collapse area and a method for preventing falling rocks from dangerous rocks, which can achieve the purpose of providing all-round and full-process safety protection for workers and equipment when working below the collapse area of ​​high and steep dangerous rocks.

[0094] (3) Compared to traditional scaffolding that requires repeated erection and dismantling whenever the work area changes, increasing working time and significantly raising the probability of accidents, this invention uses steel balls (coated with grease), pulleys, and chain hoists to move the scaffolding as a whole. Compared to traditional scaffolding, this invention saves at least 72 hours of work time each time the work area changes, greatly shortening the work time, reducing safety hazards, and better aligning with tunnel construction principles.

[0095] Although a mobile protective shed for landslide areas and a method for preventing falling rocks have been described above in conjunction with exemplary embodiments of the present invention, those skilled in the art should understand that various modifications and changes can be made to the exemplary embodiments of the present invention without departing from the spirit and scope defined by the claims.

Claims

1. A method for preventing rockfalls from dangerous rocks, characterized in that, The method for preventing rockfalls is achieved through a movable protective shed in the collapse zone, as described below. The method includes the following steps: Concrete strip foundations were poured along the entire length of the construction area; The movable protective shed in the collapse area is set in the concrete strip foundation, so that the arch foot of the arch frame is located inside the concrete strip foundation, and the pulley is in contact with the inner side of the concrete strip foundation. When the protective shed needs to be moved, rolling bodies are laid on the bottom surface of the concrete strip foundation along the direction of movement, and the protective shed slides along the concrete strip foundation; Limiting clips are installed at the displacement stop points in the direction of movement, and the protective shed stops when it moves to the predetermined position. Outriggers are set on the far side of the protective shed, and limiting clips are set on the arch feet of the protective shed to restrict sliding. The movable protective shed in the collapse area includes an arch frame unit, a moving unit, and a protective unit, wherein... An arch frame unit comprises multiple arch frames that are longitudinally connected to each other and spaced apart. The moving unit includes a flat plate, rolling elements, and pulleys. The flat plate is located at the bottom of the arch frame unit, the rolling elements are located below the flat plate, and the pulleys are located on the side of the arch foot of the arch frame. The protective unit includes a protective plate and a spring net. The protective plate is set on the outer surface of the arch frame unit. A spring net post is set above the arch top of the arch frame unit. The spring net is set above the arch frame unit through the spring net post and is perpendicular to the spring net post. The rolling elements are evenly distributed below the flat plate, and the rolling elements include steel balls; The protective shed is provided with a support on one side, and the support is arranged at a spacing of 0.5~1.5m / row; the arch feet of the arch frame unit are provided with limit clips.

2. The method for preventing rockfalls according to claim 1, characterized in that, The arch frames are spaced 0.5 to 2 meters apart, and are longitudinally connected by angle steel, with a circumferential spacing of 1 to 3 meters between the angle steel.

3. The method for preventing rockfalls according to claim 1, characterized in that, The steel balls are arranged in groups of 10 to 30, with each steel ball spaced 1 to 3 cm apart in both directions. When the protective shed is moved, one or more groups of steel balls are used to move it, with each group of steel balls spaced 0.5 to 2 m apart.

4. The method for preventing rockfalls according to claim 3, characterized in that, The steel ball has a diameter of 1-3 cm and its outer surface is coated with butter.

5. The method for preventing rockfalls according to claim 1, characterized in that, The longitudinal and transverse spacing of the bouncy net posts is 1 to 3 meters. Multiple layers of bouncy nets are installed on the bouncy net posts at intervals, with the bouncy nets spaced apart from each other, and the bouncy nets are also spaced apart from the protective panels.

6. The method for preventing rockfalls according to claim 1, characterized in that, The protective shed also includes a traction unit, which includes a chain hoist and an iron chain. The chain hoist is located at the front of the protective shed and is attached to multiple arch frames, while the iron chain is located at the rear of the protective shed and is attached to multiple arch frames.

7. The method for preventing rockfalls according to claim 1, characterized in that, The 0.5-1.2m portion of the arch foot is located within the concrete strip foundation; the pulley is installed 8-15cm below the top surface of the concrete strip foundation on the arch frame.

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