Tunnel portal rockfall protection system and method

Abstract

The invention provides a tunnel portal rockfall protection system and method. The tunnel portal rockfall protection system comprises a mounting base, a pile group rotating assembly, a plurality of rockfall protection piles and a protection net tensioned on the rockfall protection piles. The mounting base is arranged at the position close to a tunnel portal; the pile group rotating assembly is arranged on the mounting base; the multiple rockfall protection piles are arranged on the pile group rotating assembly at intervals, the pile group rotating assembly drives the rockfall protection piles to rotate, so that the rockfall protection piles are located at the required positions, and rockfall at the tunnel portal is protected through the protection nets tensioned on the rockfall protection piles. According to the tunnel portal rockfall protection system, the rockfall protection piles and the protection net are installed on the pile group rotating assembly, the installation base is arranged at the tunnel portal, and therefore the situation that in the prior art, rockfall protection piles, protection nets and the like need to be constructed on a mountain, and consequently the mountain structure is damaged is avoided; the instability of the rock soil is easily caused, and the safety risk is caused.

Description

Technical Field

[0001] The invention belongs to the technical field of rockfall prevention and control, and particularly relates to a system and method for protecting a tunnel entrance from rockfall. Background Art

[0002] With the rapid development of my country's transportation technology and the gradual improvement of transportation facilities, more and more roads and railways have gradually extended into mountainous areas. The transportation network composed of tunnels, railways, roads and bridges has brought great convenience to people's travel and provided strong guarantee for the country's economic and social development. In the process of building transportation and travel in mountainous areas, rockfall is a natural disaster that cannot be ignored. On the slopes or mountains, due to natural factors (weathering, rainfall, earthquakes, etc.) or human factors (blasting, construction, etc.), rocks and stones roll down from high places, forming rockfall disasters. Rockfall poses a great threat to people's lives and property safety.

[0003] In rockfall disasters, rockfall at the tunnel entrance often occurs during the entire process of tunnel construction. In the prior art, the protection against rockfall at the tunnel entrance is mainly achieved by installing active protection nets, passive protection nets or protective sheds. However, the above traditional entrance protection measures have the problems of complex construction process and high steep body construction difficulty. Therefore, how to protect against rockfall at the tunnel entrance is an urgent problem to be solved in this field. In some prior art, technical solutions for preventing and controlling rockfall at the tunnel entrance are also disclosed.

[0004] For example, the patent application document with application number CN201811469473.0 discloses a three-dimensional protection design method for rockfall disasters at tunnel entrances, which combines multiple protection methods and alleviates the problem of complex construction and high cost of traditional rockfall protection methods at tunnel entrances to a certain extent. However, it still needs to be constructed on the mountain, which is difficult and causes damage to the mountain structure, and easily leads to technical problems such as unstable rock and soil, which brings safety risks. Summary of the invention

[0005] In order to solve the technical problems in the background technology that the construction is difficult and the mountain structure will be damaged, resulting in rock and soil instability and bringing safety risks, the present invention provides a tunnel entrance rockfall protection system and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] In the first aspect, the present invention provides a tunnel entrance rockfall protection system, which includes: a mounting base, a pile group rotating assembly, a plurality of rockfall protection piles and a protection net stretched on the rockfall protection piles; the mounting base is arranged near the tunnel entrance; the pile group rotating assembly is arranged on the mounting base; a plurality of the rockfall protection piles are arranged at intervals on the pile group rotating assembly; the pile group rotating assembly is used to drive the rockfall protection piles to rotate; and the protection net is stretched on the rockfall protection piles.

[0008] Optionally, the pile group rotation assembly includes a pile group rotation device and a plurality of single pile rotation devices; the pile group rotation device includes a driving member and a mounting, the driving member is fixedly mounted on the mounting base, the mounting plate is movably arranged above the mounting base, and the mounting plate is fixedly connected to the driving member; a plurality of the single pile rotation devices are arranged on the mounting plate at intervals; the single pile rotation device includes a first telescopic member, a swing arm and a mounting structure; the swing arm is hinged on the mounting plate; one end of the first telescopic member is hingedly mounted on the mounting plate, and the other end is hinged to the swing arm; the mounting structure is arranged on the swing arm; the rockfall protection pile is fixedly mounted on the mounting structure.

[0009] Optionally, the mounting structure includes a mounting groove, a screw and a rotating machine; the mounting groove is arranged on the swing arm, and the rotating machine is arranged on a side of the swing arm away from the rockfall protection pile; the screw passes through the mounting groove and is connected to the rotating machine; the rockfall protection pile includes a pile body and a fixed connector fixed on the pile body, and a threaded hole is arranged at the center of the fixed connector; the fixed connector is used to be inserted into the mounting groove, and the rotating machine is used to drive the screw to rotate, so that the screw is inserted into the threaded hole to engage, and the rockfall protection pile is fixedly mounted on the mounting structure.

[0010] Optionally, the tunnel entrance rockfall protection system further comprises an automated protection pile installation assembly, wherein the automated protection pile installation assembly comprises a protection pile installation device and a protection pile moving device;

[0011] The protection pile installation device includes a fixed arch frame, a mobile arch frame, a plurality of second telescopic members, a plurality of third telescopic members and a plurality of clamping members; the fixed arch frame is fixedly arranged on the lower side of the installation base, and the mobile arch frame is arranged outside the tunnel opening and corresponds to the fixed arch frame; a plurality of the second telescopic members are arranged at intervals between the fixed arch frame and the mobile arch frame, and the second telescopic member connects the fixed arch frame and the mobile arch frame; a plurality of the third telescopic members are arranged at intervals on the upper side of the mobile arch frame, and one clamping member is fixedly installed on one of the third telescopic members; the third telescopic member is used to telescopically adjust the position of the clamping member so that the clamping member fixes and clamps the rockfall protection pile and makes the rockfall protection pile at a height corresponding to the pile group rotating assembly; the second telescopic member is used to drive the mobile arch frame to move toward the fixed arch frame, so that the clamping member drives the rockfall protection pile to move, thereby realizing the installation of the rockfall protection pile on the pile group rotating assembly;

[0012] The protective pile moving device is arranged on a side of the protective pile installation device away from the tunnel entrance, and includes a base, an arched slide rail group, a moving wheel group, a pushing structure and a protective pile self-locking structure; the arched slide rail group includes at least two arched slide rails, and at least two of the arched slide rails are arranged on the base at intervals; there are two moving wheel groups, which are respectively arranged on two arched slide rails; the protective pile self-locking structure is fixedly arranged on the moving wheel group away from the tunnel entrance, and is used for self-locking and fixing the rockfall protection pile; the pushing structure is arranged on a side of the protective pile self-locking structure away from the tunnel entrance, and is used for pushing the rockfall protection pile to move the rockfall protection pile to the protective pile installation device;

[0013] The arched slide rail is also used to set up a rockfall protection shed.

[0014] Optionally, the base includes a base body, a support member, a buffer member and a limit member; a cavity is provided in the base body;

[0015] The support member and the buffer member are arranged in the cavity, and the support member is connected to the upper side of the buffer member; a track groove is arranged on the support member; the track groove is used to install and move the arched slide rail;

[0016] The limiting member is used to limit the supporting member and the buffer member when the rockfall protection pile is moved and adjusted.

[0017] Optionally, the tunnel portal rockfall protection system further comprises a dust cover, and the dust cover is fixedly arranged above the pile group rotating assembly.

[0018] In a second aspect, the present invention further provides a tunnel entrance rockfall protection method, which is used in the tunnel entrance rockfall protection system described above, comprising:

[0019] S1: Exploring the surrounding environment of the tunnel entrance, and determining the rockfall protection method and height to be adopted for the tunnel entrance;

[0020] S2: The installation base is fixedly installed near the tunnel entrance, so that the pile group rotating assembly is at the protection height above the tunnel entrance, a plurality of rockfall protection piles are fixedly installed on the pile group rotating assembly, and the protection net is stretched on the rockfall protection piles;

[0021] S3: According to the required rockfall protection method for the tunnel entrance, the rockfall protection piles are driven to rotate through the pile group rotating assembly, so that the rockfall protection piles and the protection net are in the rockfall protection position to perform rockfall protection for the tunnel entrance.

[0022] Optionally, the step S2 specifically includes:

[0023] S2.1: The mounting base is fixedly installed near the tunnel entrance so that the pile group rotating assembly is at the protection height above the tunnel entrance;

[0024] S2.2: The protection pile installation device is fixedly installed on the lower side of the pile group rotating assembly, and the protection pile moving device is installed on the outer side of the tunnel opening; the rockfall protection pile is moved and installed on the pile group rotating assembly through the protection pile installation device and the protection pile moving device;

[0025] S2.3: Tension the protection net on the rockfall protection piles.

[0026] Optionally, the step S2.2 specifically includes:

[0027] S2.2.1: The protection pile installation device is fixedly installed on the lower side of the pile group rotating assembly, and the protection pile moving device is installed outside the tunnel entrance;

[0028] S2.2.2: The second telescopic member is in an extended state;

[0029] S2.2.3: The rockfall protection pile is self-locked and fixed by the self-locking structure of the protection pile, and the rockfall protection pile is driven to move along the arched slide rail by the moving wheel group, so that the rockfall protection pile is moved to a position close to the corresponding clamping member; the rockfall protection pile is pushed by the pushing structure to move the rockfall protection pile toward the clamping member; after the rockfall protection pile is clamped by the corresponding clamping member, the locking of the self-locking structure of the protection pile is released;

[0030] S2.2.4: Repeat step S2.2.3 until each clamping member is clamped with a rockfall protection pile;

[0031] S2.2.5: Adjust the extension length of each third telescopic member so that the rockfall protection piles clamped by the clamping members are at a height corresponding to the pile group rotation assembly;

[0032] S2.2.6: Shorten the second telescopic member to move the rockfall protection pile toward the pile group rotation assembly, and install all the rockfall protection piles on the pile group rotation assembly.

[0033] Optionally, the step S3 specifically includes:

[0034] If the rockfall protection method to be adopted for the tunnel entrance is active protection, the installation plate is driven to rotate by the driving member so that the rockfall protection pile is close to the slope surface near the tunnel entrance; and each single pile rotating device is adjusted in turn so that the rockfall protection pile and the protection net installed on each single pile rotating device are close to the slope surface;

[0035] If the tunnel entrance rockfall protection method to be adopted is passive protection, the mounting plate is driven to rotate by the driving member so that the angle between the rockfall protection pile and the slope surface is 30 to 90 degrees.

[0036] The beneficial effects of the present invention are:

[0037] (1) The present invention provides a rockfall protection system for a tunnel entrance, comprising a mounting base, a pile group rotating assembly, a plurality of rockfall protection piles, and a protection net stretched on the rockfall protection piles; the mounting base is arranged near the tunnel entrance; the pile group rotating assembly is arranged on the mounting base; a plurality of rockfall protection piles are arranged on the pile group rotating assembly at intervals, and the rockfall protection piles are driven to rotate by the pile group rotating assembly, so that the rockfall protection piles are in a required position, and the protection net stretched on the rockfall protection piles is used to protect the tunnel entrance from falling rocks. The rockfall protection system for the tunnel entrance of the present invention installs the rockfall protection piles and the protection net on the pile group rotating assembly, and is arranged at the tunnel entrance through the mounting base, thereby avoiding the technical problem in the prior art that the rockfall protection piles, the protection net, etc. need to be constructed on the mountain, resulting in damage to the mountain structure, which is easy to cause rock and soil instability and bring safety risks.

[0038] (2) At the same time, the rockfall protection system at the tunnel entrance of the present invention adjusts the angle of the rockfall protection piles through the pile group rotating assembly, so that the rockfall protection piles and the protection net can switch between active protection and passive protection at any time. In actual use, the active protection and passive protection states can be specifically adjusted according to the current situation of rockfall at the tunnel entrance, and it has a wide range of usage scenarios.

[0039] (3) The rockfall protection system for tunnel entrances of the present invention includes a plurality of single-pile rotating devices. When in the active protection state, the angle of the rockfall protection pile is adjusted by the single-pile rotating device, so that each rockfall protection pile can be close to its corresponding slope surface, thereby compacting the broken rocks on the slope surfaces with different slopes, thereby avoiding the technical problem of poor active protection effect caused by the inability to adapt to the rugged slope surface during active protection in the prior art.

[0040] (4) The rockfall protection system at the tunnel entrance of the present invention is also provided with an automated protection pile installation assembly, through which the rockfall protection piles are adjusted to the required height and then installed. While realizing automated and rapid installation, a rockfall protection shed can also be set up on the protection pile moving device, thereby combining the rockfall protection piles, the protection net and the rockfall protection shed to realize multi-level protection against rockfall at the tunnel entrance. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of a tunnel opening rockfall protection system according to the present invention;

[0042] Figure 2 It is a schematic diagram of the installation of rockfall protection piles of the rockfall protection system for tunnel openings in the present invention;

[0043] Figure 3 is a schematic diagram of a single pile rotation device in the present invention;

[0044] Figure 4 is a schematic diagram of a rockfall protection pile in the present invention;

[0045] Figure 5 is a schematic diagram of a protective pile installation device and a protective pile moving device in the present invention;

[0046] Figure 6 is a schematic diagram of the protection pile installation device of the present invention;

[0047] Figure 7 Schematic diagram of the third telescopic member in the present invention extending

[0048] Figure 8 is a schematic diagram of a base in the present invention;

[0049] Fig. 9 It is a schematic diagram of installing a rockfall protection shed on an arched slide rail in the present invention;

[0050] Fig.10 It is a schematic diagram of a rockfall protection system for a tunnel opening with a dust cover according to the present invention;

[0051] Fig.11 is a further schematic diagram of the rockfall protection pile in the present invention;

[0052] Fig.12 is a schematic diagram of the elastic buffer member in the present invention;

[0053] Fig.13 It is a schematic diagram of the spring assembly in the present invention.

[0054] Among them: 1. Mounting base; 2. Pile group rotation assembly; 2.1. Pile group rotation device; 2.1.1. Driving member; 2.1.2. Mounting plate; 2.2. Single pile rotation device; 2.2.1. First telescopic member; 2.2.2. Swing arm; 2.2.3. Mounting structure; 2.2.3.1. Mounting slot; 2.2.3.2. Screw rod; 2.2.3.3. Rotating machine; 3. Rockfall protection pile; 3.1. Pile body; 3.1.1. Hanging mesh surface; 3.2. Fixed connector; 3.3. Threaded hole; 3.4. Elastic buffer; 3.4.1. Shell; 3.4.1.1. Opening; 3.4.2. Cover plate; 3.4.3. Spring assembly ; 3.4.3.1, fixed column; 3.4.3.2, enclosure plate; 3.4.3.3, telescopic spring; 3.5, protective net connector; 4, protective net; 5, protective pile installation device; 5.1, fixed arch frame; 5.2, mobile arch frame; 5.3, second telescopic member; 5.4, third telescopic member; 5.5, clamping member; 6, protective pile moving device; 6.1, base; 6.1.1, seat body; 6.1.2, support member; 6.1.3, buffer member; 6.1.4, limit member; 6.2, arch slide rail; 6.3, mobile wheel group; 6.4, push structure; 6.5, protective pile self-locking structure; 7, rockfall protection shed; 8, dust cover. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0058] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0061] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0062] Example 1

[0063] See also Figure 1 , Figure 2 , shows a schematic diagram of a tunnel entrance rockfall protection system in the present application, including: an installation base 1, a pile group rotation assembly 2, a plurality of rockfall protection piles 3 and a protection net 4 stretched on the rockfall protection piles; the installation base 1 is arranged near the tunnel entrance; the pile group rotation assembly 2 is arranged on the installation base 1; a plurality of rockfall protection piles 3 are arranged on the pile group rotation assembly 2 at intervals; the pile group rotation assembly 2 is used to drive the rockfall protection piles 3 to rotate; the protection net 4 is stretched on the rockfall protection piles 3.

[0064] In this embodiment, the rockfall protection pile 3 is driven to rotate by the pile group rotating assembly 2, so that the rockfall protection pile 3 is in the required position, so that the rockfall protection pile 3 is protected from the tunnel entrance by the protection net 4 stretched on the rockfall protection pile 3. The rockfall protection system for the tunnel entrance of the present invention installs the rockfall protection pile 3 and the protection net 4 on the pile group rotating assembly 2, and is arranged at the tunnel entrance through the mounting base 1, thereby avoiding the technical problem in the prior art that the rockfall protection pile 3, the protection net 4, etc. need to be constructed on the mountain, resulting in damage to the mountain structure, which is easy to cause rock and soil instability and bring safety risks.

[0065] Furthermore, the rockfall protection system at the tunnel entrance of the present invention adjusts the angle of the rockfall protection pile 3 through the pile group rotating assembly 2, so that the rockfall protection pile 3 and the protection net 4 can realize the switch between active protection and passive protection at any time. In actual use, when the slope surface of the tunnel entrance needs to adopt active protection to stabilize the slope and prevent further weathering and peeling, the rockfall protection pile 3 and the protection net 4 can be attached to the slope surface through the pile group rotating assembly 2, thereby actively protecting the tunnel entrance from rockfall, and at the same time maintaining the original landform and vegetation of the slope Growth conditions; when passive protection is required for the tunnel entrance slope, such as when collapse and rockfall occur in concentrated areas and at high frequencies, the pile group rotating assembly 2 can be used to make the rockfall protection piles 3 and the protection net 4 be in a state with a certain angle to the slope. Specifically, when in the passive protection state, the angle between the rockfall protection piles 3 and the slope surface is 30 to 90 degrees, such as 30 degrees, 45 degrees, 60 degrees or 90 degrees, so that the protection net 4 and the rockfall protection piles 3 can buffer and intercept the rockfall at the tunnel entrance, protecting the safety of personnel, buildings and facilities in the area below. The tunnel entrance rockfall protection system of the present invention can specifically adjust the active protection and passive protection states according to the current status of rockfall at the tunnel entrance, and has a wide range of usage scenarios.

[0066] Optionally, refer to Figure 1 and Figure 2 The pile group rotation assembly 2 in the present invention comprises a pile group rotation device 2.1 and a plurality of single pile rotation devices 2.2; the pile group rotation device 2.1 comprises a driving member 2.1.1 and a mounting plate 2.1.2, the driving member 2.1.1 is fixedly mounted on the mounting base 1, the mounting plate 2.1.2 is movably arranged above the mounting base 1, and the mounting plate 2.1.1 is fixedly connected to the driving member 2.1.1; a plurality of single pile rotation devices 2.2 are arranged at intervals on the mounting plate 2.1.2; a rockfall protection pile 3 is fixedly mounted on a single pile rotation device 2.2; the pile group rotation device 2.1 is used to drive all rockfall protection piles 3 to rotate, so that the tunnel entrance rockfall protection system can switch between active protection and passive protection; the single pile rotation device 2.2 is used to drive the rockfall protection piles 3 installed thereon to rotate, so that the rockfall protection piles 3 can adapt to slopes with different inclination angles.

[0067] In this embodiment, the single pile rotating device 2.2 is installed on the mounting plate 2.1.2, and the rockfall protection pile 3 is fixedly installed on the single pile rotating device 2.2. The mounting plate 2.1.2 is driven to rotate by the driving member 2.1.1, thereby realizing the switching between active protection and passive protection of the rockfall protection system at the tunnel entrance. In particular, when in the active protection state, the angle of the rockfall protection pile 3 can be further adjusted by the single pile rotating device 2.2, so that each rockfall protection pile 3 can be close to its corresponding slope surface, and the broken rocks on the slope surface with different slopes can be fully compacted, avoiding the technical problem of poor active protection effect caused by the inability to adapt to the rugged slope surface in the active protection in the prior art.

[0068] Optionally, refer to Figure 3 The single pile rotating device 2.2 of the present invention comprises a first telescopic member 2.2.1, a swing arm 2.2.2 and a mounting structure 2.2.3; the swing arm 2.2.2 is hinged on the mounting plate 2.1.2; one end of the first telescopic member 2.2.1 is hinged on the mounting plate 2.1.2, and the other end is hinged to the swing arm 2.2.2; the mounting structure 2.2.3 is arranged on the swing arm 2.2.2; the rockfall protection pile 3 is fixedly mounted on the mounting structure 2.2.3.

[0069] In this embodiment, the single pile rotating device 2.2 includes a first telescopic member 2.2.1, a swing arm 2.2.2 and a mounting structure 2.2.3. During use, the rockfall protection pile 3 is fixedly installed by the mounting structure 2.2.3. When the rockfall protection system at the tunnel entrance is in an active protection state, if it is necessary to adjust the angle of the rockfall protection pile 3 by the single pile rotating device 2.2, the first telescopic member 2.2.1 is extended or shortened, thereby driving the swing arm 2.2.2 and the rockfall protection pile 3 installed on the swing arm by the mounting structure 2.2.3 to rotate, thereby realizing the adjustment of the specific angle of a single rockfall protection pile 3, so that the rockfall protection pile 3 can be close to its corresponding slope surface, and the crushed rock on the slope surface with different slopes can be fully compacted.

[0070] Optionally, refer to Figure 3 and Figure 4 The mounting structure 2.2.3 in the present invention comprises a mounting groove 2.2.3.1, a screw rod 2.2.3.2 and a rotating machine 2.2.3.3; the mounting groove 2.2.3.1 is arranged on the swing arm 2.2.2, and the rotating machine 2.2.3.3 is arranged on a side of the swing arm 2.2.2 away from the rockfall protection pile 3; the screw rod 2.2.3.2 passes through the mounting groove 2.2.3.1 and is connected to the rotating machine 2.2.3.3; the rockfall protection pile 3 comprises a pile body 3.1 and a fixed connector 3.2 fixedly arranged on the pile body 3.1, and a threaded hole 3.3 is arranged at the center of the fixed connector 3.2; the fixed connector 3.2 is used to be inserted into the mounting groove 2.2.3.1, and the rotating machine 2.2.3.3 is used to drive the screw rod 2.2.3.2 to rotate, so that the screw rod 2.2.3.2 is inserted into the threaded hole 3.3 for meshing, and the rockfall protection pile 3 is fixedly mounted on the mounting structure 2.2.3.

[0071] In this embodiment, the mounting structure 2.2.3 includes a mounting groove 2.2.3.1, a screw 2.2.3.2 and a rotating machine 2.2.3.3. During the process of installing the rockfall protection pile 3 on the mounting structure 2.2.3, the fixed connector 3.2 with the threaded hole 3.3 is brought close to the screw 2.2.3.2, and the screw 2.2.3.2 is driven to rotate by the rotating machine 2.2.3.3, so that the screw 2.2.3.2 is inserted into the threaded hole 3.3 and meshed, thereby completing the operation of fixing the rockfall protection pile 3 on the mounting structure 2.2.3.

[0072] Furthermore, a friction structure is provided on the inner wall of the installation groove 2.2.3.1 to increase the friction between the inner wall of the installation groove 2.2.3.1 and the fixed connector 3.2, so that the installation of the rockfall protection pile 3 and the installation structure 2.2.3 is more stable.

[0073] Optionally, refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 As shown in the figure, the tunnel entrance rockfall protection system of the present invention also includes an automated protection pile installation assembly, which includes a protection pile installation device 5 and a protection pile moving device 6; the protection pile moving device 6 is arranged on the outside of the tunnel entrance, and is used to adjust and move the rockfall protection pile 3 to a position corresponding to the protection pile installation device 5, and after the installation of the rockfall protection pile 3, a rockfall protection shed 7 is set on the protection pile moving device 6; the protection pile installation device 5 is arranged on the lower side of the pile group rotating assembly 2, and is used to move and install the rockfall protection pile 3 adjusted and moved by the protection pile moving device 6 onto the pile group rotating assembly 2.

[0074] In this embodiment, the protection pile moving device 6 adjusts and moves the rockfall protection pile 3 to a position corresponding to the protection pile installation device 5; the protection pile installation device 5 moves and installs the rockfall protection pile 3 adjusted and moved by the protection pile moving device 6 onto the pile group rotating assembly 2, thereby realizing the automated construction of the rockfall protection pile 3. While realizing automated and rapid installation, a rockfall protection shed 7 can also be set up on the protection pile moving device 6, thereby combining the rockfall protection pile 3, the protection net 4 and the rockfall protection shed 7 to realize multi-level protection against rockfall at the tunnel entrance.

[0075] Optionally, refer to Figure 1 and Figure 6 The protective pile installation device 5 of the present invention comprises a fixed arch frame 5.1, a mobile arch frame 5.2, a plurality of second telescopic members 5.3, a plurality of third telescopic members 5.4 and a plurality of clamping members 5.5; the fixed arch frame 5.1 is fixedly arranged on the lower side of the installation base 1, the mobile arch frame 5.2 is arranged on the outer side of the tunnel opening and corresponds to the fixed arch frame 5.1; the plurality of second telescopic members 5.3 are arranged at intervals between the fixed arch frame 5.1 and the mobile arch frame 5.2, and the second telescopic members 5.3 connect the fixed arch frame 5.1 and the mobile arch frame 5.2; the plurality of third telescopic members 5.4 are arranged at intervals on the upper side of the mobile arch frame 5.2, and a clamping member 5.5 is fixedly installed on a third telescopic member 5.4; the third telescopic member 5.4 is used to telescopically adjust the position of the clamping member 5.5, so that the clamping member 5.5 fixes and clamps the rockfall protection pile 3, and makes the rockfall protection pile 3 at a height corresponding to the pile group rotating component 2; the second telescopic member 5.3 is used to drive the mobile arch frame 5.2 to move toward the fixed arch frame 5.1, so that the clamping member 5.5 drives the rockfall protection pile 3 to move, thereby realizing the installation of the rockfall protection pile 3 on the pile group rotating component 2.

[0076] In this embodiment, the protection pile installation device 5 includes a fixed arch frame 5.1, a mobile arch frame 5.2, a plurality of second telescopic members 5.3, a plurality of third telescopic members 5.4 and a plurality of clamping members 5.5. In use, by adjusting the elongation length of the plurality of third telescopic members 5.4, the rockfall protection pile 3 after being moved and adjusted by the protection pile moving device 6 is clamped by the clamping member 5.5; the length of the third telescopic member 5.4 is adjusted so that the clamping member 5.5 on each third telescopic member 5.4 and the clamped rockfall protection pile 3 are at a height compatible with the mounting structure 2.2.3 on the single pile rotating device 2.2; the mobile arch frame 5.2 is pulled toward the fixed arch frame 5.1 by the second telescopic member 5.3, so that the rockfall protection pile 3 clamped on the clamping member 5.5 is pulled toward the mounting structure 2.2.3, so that the rockfall protection pile 3 is installed on the mounting structure 2.2.3, thereby realizing the automated installation of the rockfall protection pile 3 and improving the construction efficiency.

[0077] Optionally, refer to Figures 1 to 9 The protective pile moving device 6 in the present invention includes a base 6.1, an arched slide rail group, a moving wheel group 6.3, a pushing structure 6.4 and a protective pile self-locking structure 6.5; the arched slide rail group includes at least two arched slide rails 6.2, and at least two arched slide rails are arranged on the base 6.1 at intervals; there are two moving wheel groups 6.3, which are respectively arranged on the two arched slide rails 6.2; the protective pile self-locking structure 6.5 is fixedly arranged on the moving wheel group 6.3 away from the tunnel entrance, and is used for self-locking and fixing the rockfall protection pile 3; the pushing structure 6.4 is arranged on the side of the protective pile self-locking structure 6.5 away from the tunnel entrance, and is used for pushing the rockfall protection pile 3, so that the rockfall protection pile 3 moves to the protective pile installation device 5; the arched slide rail 6.2 is also used to set up a rockfall protection shed 7.

[0078] In this embodiment, the protection pile moving device 6 includes a base 6.1, an arched slide rail group, a moving wheel group 6.3, a pushing structure 6.4 and a protection pile self-locking structure 6.5. During use, after the protection pile self-locking structure 6.5 self-locks and fixes the rockfall protection pile 3, the moving wheel group 6.3 drives the rockfall protection pile 3 to move along the arch frame 6.2 to a position corresponding to the single pile selection device 2.2, and then the rockfall protection pile 3 is pushed by the pushing structure 6.4 to move the rockfall protection pile 3 toward the protection pile installation device 5; after completing the installation of the rockfall protection pile 3, a rockfall protection shed 7 can be set up on the arched pulley group to achieve multi-level protection against rockfall in the tunnel.

[0079] For example, refer to Figure 7, showing a schematic diagram of multiple third telescopic members 5.4 being extended so that multiple clamping members 5.5 are in a position corresponding to the single pile selection device 2.2, wherein the number of third telescopic members 5.4 is x, and after the rockfall protection pile 3 is moved to the vertex, θ1, θ1+θ2, θ1+θ2+θ3 angles of the arch frame 6.2, the rockfall protection pile 3 is pushed toward the protection pile installation device 5 by using the jacking structure 6.4, and the clamping member 5.5 is used to clamp the fixed pile body 3.1; the third telescopic member 5.4 is extended so that the rockfall protection pile 3 is in the same height corresponding to the single pile rotation device 2.2, specifically, the length of the third telescopic member 5.4 after extension is S1, S2, S3, S4, wherein S1, S2, S3, S4 are HR, Then, the second telescopic member 5.3 pulls the movable arch frame 5.2 toward the fixed arch frame 5.1, so that the rockfall protection pile 3 clamped by the clamping member 5.5 approaches the single pile rotating device 2.2, and under the action of the rotating machine 2.2.3.3, the fixed installation with the mounting structure 2.2.3 is completed.

[0080] Optionally, refer to Figure 8 The base 6.1 in the present invention includes a seat body 6.1.1, a support member 6.1.2, a buffer member 6.1.3 and a limit member 6.1.4; a cavity is provided in the seat body 6.1.1; the support member 6.1.2 and the buffer member 6.1.3 are provided in the cavity, and the support member 6.1.3 is connected to the upper side of the buffer member 6.1.3; a track groove is provided on the support member 6.1.2; the track groove is used for installing and moving the arched slide rail 6.2; the limit member 6.1.4 is used for limiting the support member 6.1.2 and the buffer member 6.1.3 when moving and adjusting the rockfall protection pile 3.

[0081] In this embodiment, the base 6.1 includes a seat body 6.1.1, a support member 6.1.2, a buffer member 6.1.3 and a limit member 6.1.4. After the rockfall protection shed 7 is erected by the arc-shaped arch frame 6.2, the buffer member 6.1.3 can buffer when rocks fall on the rockfall protection shed 7, thereby reducing the damage caused by the rocks. When the rockfall protection pile 3 is moved and adjusted, the support member 6.1.2 and the buffer member 6.1.3 are limited by the limit member 6.1.4 to prevent the arc-shaped arch frame 6.2 from shaking under the action of gravity, resulting in errors in the installation position of the rockfall protection pile 3.

[0082] Furthermore, a moving part 6.2.1 is provided at the bottom of the arch frame 6.2, and the moving part 6.2.1 is inserted into the track groove on the support member 6.1.2, and enables the arch frame 6.2 to move along the track groove, thereby facilitating the disassembly and position adjustment of the arch frame 6.2.

[0083] Optionally, refer to Fig.10The tunnel portal rockfall protection system of the present invention further comprises a dust cover 8 , which is fixedly arranged above the pile group rotating assembly 2 .

[0084] In this embodiment, a dust cover 8 is provided above the pile group rotation assembly 2 to protect the telescopic parts, hinged joints, driving parts and other components in the pile group rotation assembly 2 from dust and water, so as to avoid reducing the service life of the tunnel entrance rockfall protection system during long-term field use.

[0085] Further, the first telescopic member 2.2.1, the second telescopic member 5.3 and the third telescopic member 5.4 described in the present invention can be specifically selected as a hydraulic jack or any other telescopic member known to those skilled in the art, which is not specifically limited in this embodiment.

[0086] Example 2

[0087] In order to make the tunnel entrance rockfall protection system of the present invention have a better protection effect on the rockfall at the tunnel entrance, the rockfall protection pile 3 is also optimized in this embodiment, specifically including:

[0088] Optionally, refer to Fig.11 The rockfall protection pile 3 in the present invention comprises a pile body 3.1, a fixed connector 3.2, a threaded hole 3.3, an elastic buffer 3.4 and a protection net connector 3.5; a cavity is provided in the pile body 1, and the elastic buffer 3.4 is fixedly provided in the cavity; the protection net connector 3.5 penetrates the outer wall of the pile body 1 and is inserted into the cavity, and the protection net connector 3.5 is connected to the elastic buffer 3.4; the protection net connector 3.5 is used for hanging the protection net 4.

[0089] In this embodiment, a cavity is set in the pile body 3.1, and the elastic buffer 3.4 is fixedly set in the cavity. The protective net connecting piece 3.5 partially extends into the cavity and is connected to the elastic buffer 3.4, and is hung and connected to the protective net 4. The protective nets 4 are respectively hung through multiple pile bodies 3.1 to form a large-area rockfall protection system. When a rockfall disaster occurs at the tunnel entrance, the rocks roll along the slope and enter the protective net 4, impacting the protective net 4, causing the protective net 4 to pull the protective net connecting piece 3.5 and the elastic buffer 3.4, causing the elastic buffer 3.4 to undergo elastic deformation. Multiple elastic buffers 3.4 work together to effectively buffer the impact force caused by the rockfall, prevent the pile body 3.1 from being damaged due to the fast rockfall speed and large impact force, and enhance the protection effect of the tunnel entrance rockfall protection system of the present invention on the rockfall at the tunnel entrance.

[0090] Optionally, refer to Fig.11The pile body 3.1 in the present invention comprises two mesh hanging surfaces 3.1.1 which are separated from each other; the cavity is arranged along the extension direction of the pile body 3.1; there are multiple protective net connecting pieces 3.5 and elastic buffering pieces 3.4; multiple protective net connecting pieces 3.5 are arranged on the mesh hanging surface 3.1.1 in sequence along the extension direction of the pile body 3.1, and there are intervals between the protective net connecting pieces 3.5; multiple elastic buffering pieces 3.4 are fixedly arranged in the cavity in sequence along the extension direction of the pile body 3.1, and the elastic buffering pieces 3.4 correspond one to one to the protective net connecting pieces 3.5.

[0091] In this embodiment, two mesh hanging surfaces 3.1.1 that are separated from each other are used to hang the protection net 4 on both sides of the pile body 3.1, and multiple rockfall protection piles 3 are arranged at intervals on the pile group rotating assembly 2. The mesh hanging surfaces 3.1.1 are arranged relatively, and after the protection net 4 is hung, a rockfall protection system is formed. The rockfall protection system is driven to rotate by the pile group rotating assembly 2 to switch between active protection and passive protection, thereby realizing rockfall protection at the tunnel entrance. Further, multiple elastic buffers 3.4 can be arranged in the cavity near the corners, or can be arranged in the cavity in sequence along the direction in which the pile body 3.1 extends.

[0092] Optionally, refer to Fig.12 and Fig.13 The elastic buffer member 3.4 of the present invention includes a shell 3.4.1, a cover plate 3.4.2 and a spring assembly 3.4.3; the shell 21 and the cover plate 3.4.2 enclose a receiving cavity, and an opening 3.4.1.1 is provided on the shell 3.4.1; the spring assembly 3.4.3 is fixedly arranged in the receiving cavity, and partially extends out of the opening 3.4.1.1, and the part of the spring assembly 3.4.3 extending out of the opening 3.4.1.1 is fixedly connected to the protective net connector 3.5.

[0093] In this embodiment, the elastic buffer 3.4 includes a shell 3.4.1, a cover plate 3.4.2 and a spring assembly 3.4.3. The spring assembly 3.4.3 is arranged in the accommodating cavity of the shell 3.4.1 and the cover plate 3.4.2, which protects the spring assembly 3.4.3 and prevents the spring assembly 3.4.3 from aging and being damaged too quickly, while reducing the risk of wear between the spring assembly 3.4.3 and the pile body 3.1 during the buffering process.

[0094] Furthermore, the housing 3.4.1 and the cover plate 3.4.2 may be fixed by a plurality of fasteners, for example, see Fig.12 , can be fixed by multiple evenly distributed screws or bolts.

[0095] Optionally, refer to Fig.13The spring assembly 3.4.3 includes a fixed column 3.4.3.1, a baffle plate 3.4.3.2 and a telescopic spring 3.4.3.3; the fixed column 3.4.3.1 is fixedly arranged at the center of the accommodating cavity; the baffle plate 3.4.3.2 extends spirally from the center of the accommodating cavity to the opening 3.4.1.1, and the baffle plate 3.4.3.2 forms a spiral channel with the shell 3.4.1 and the cover plate 3.4.2; one end of the telescopic spring 3.4.3.3 is fixedly connected to the fixed column 3.4.3.1, and the other end extends out of the opening 3.4.1.1 along the spiral channel and is fixedly connected to the protective net connector 3.5.

[0096] In this embodiment, the telescopic spring 3.4.3.3 extends in the spiral channel and is fixedly connected to the protective net connecting piece 3.5 after extending out of the opening 3.4.1.1, which saves space and ensures its own restoring force.

[0097] Example 3

[0098] The present invention also provides a tunnel entrance rockfall protection method, which is used for any of the tunnel entrance rockfall protection systems in the above embodiment 1, comprising:

[0099] S1: Exploring the surrounding environment of the tunnel entrance, and determining the rockfall protection method and height to be adopted for the tunnel entrance;

[0100] S2: The mounting base 1 is fixedly arranged near the tunnel entrance, the pile group rotating assembly 2 is located at the protection height above the tunnel entrance, a plurality of rockfall protection piles 3 are fixedly installed on the pile group rotating assembly 2, and the protection net 4 is stretched on the rockfall protection piles 3;

[0101] S3: According to the required rockfall protection method for the tunnel entrance, the rockfall protection pile 3 is driven to rotate by the pile group rotating assembly 2, so that the rockfall protection pile 3 and the protection net 4 are in the rockfall protection position to perform rockfall protection for the tunnel entrance.

[0102] Optionally, step S2 in the present invention specifically includes:

[0103] S2.1: The mounting base 1 is fixedly arranged near the tunnel opening so that the pile group rotating assembly 2 is at a protective height above the tunnel opening;

[0104] S2.2: The protection pile installation device 5 is fixedly installed on the lower side of the pile group rotating assembly 2, and the protection pile moving device 6 is installed outside the tunnel opening; the rockfall protection pile 3 is moved and installed on the pile group rotating assembly 2 by the protection pile installation device 5 and the protection pile moving device 6;

[0105] S2.3: Pull the protection net 4 onto the rockfall protection pile 3.

[0106] Optionally, step S2.2 in the present invention specifically includes:

[0107] S2.2.1: The protection pile installation device 5 is fixedly arranged on the lower side of the pile group rotating assembly (2), and the protection pile moving device 6 is arranged outside the tunnel opening;

[0108] S2.2.2: Put the second telescopic member 5.3 in an extended state;

[0109] S2.2.3: The rockfall protection pile 3 is self-locked and fixed by the protection pile self-locking structure 6.5, and the rockfall protection pile 3 is driven to move along the arched slide rail 6.2 by the moving wheel group 6.3, so that the rockfall protection pile 3 moves to a position close to the corresponding clamping member 5.5; the rockfall protection pile 3 is pushed by the pushing structure 6.4, so that the rockfall protection pile 3 moves toward the clamping member 5.5; after the rockfall protection pile 3 is clamped by the corresponding clamping member 5.5, the locking of the protection pile self-locking structure 6.5 is released;

[0110] S2.2.4: Repeat step S2.2.3 until each clamping member 5.5 is clamped with a rockfall protection pile 3;

[0111] S2.2.5: Adjust the extension length of each third telescopic member 5.4 so that the rockfall protection piles 3 clamped by the clamping member 5.5 are all at a height corresponding to the pile group rotating assembly 2;

[0112] S2.2.6: Shorten the second telescopic member 5.3 to move the rockfall protection piles 3 toward the pile group rotating assembly 2, and install all the rockfall protection piles 3 onto the pile group rotating assembly 2.

[0113] Furthermore, step S2 in the present invention may also include:

[0114] S2.4: Move the protection pile moving device 6 to a position close to the tunnel entrance, and set up a rockfall protection shed 7 on the protection pile moving device 6.

[0115] Optionally, step S3 in the present invention specifically includes:

[0116] If the tunnel entrance rockfall protection method to be adopted is active protection, the driving member 2.1.1 drives the mounting plate 2.1.2 to rotate, so that the rockfall protection pile 3 is close to the slope surface near the tunnel entrance; and each single pile rotating device 2.2 is adjusted in turn, so that the rockfall protection pile 3 and the protection net 4 installed on each single pile rotating device 2.2 are close to the slope surface;

[0117] If the tunnel opening rockfall protection method to be adopted is passive protection, the mounting plate 2.1.2 is driven to rotate by the driving member 2.1.1 so that the angle between the rockfall protection pile 3 and the slope surface is 30 to 90 degrees.

[0118] In this embodiment, a method for protecting a tunnel entrance from falling rocks is provided. It should be noted that the method for protecting a tunnel entrance from falling rocks in the present invention is implemented based on the tunnel entrance from falling rocks protection system in the above embodiment 1, and the use process and beneficial effects are also similar, which will not be elaborated here.

[0119] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0120] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tunnel entrance rockfall protection system, characterized in that: The tunnel entrance rockfall protection system comprises: a mounting base (1), a pile group rotating assembly (2), a plurality of rockfall protection piles (3), and a protection net (4) stretched on the rockfall protection piles (3); The mounting base (1) is arranged near the tunnel entrance; The pile group rotating assembly (2) is arranged on the mounting base (1); A plurality of rockfall protection piles (3) are arranged at intervals on the pile group rotating assembly (2); the pile group rotating assembly (2) is used to drive the rockfall protection piles (3) to rotate; The protection net (4) is stretched on the rockfall protection pile (3).

2. The tunnel entrance rockfall protection system according to claim 1, characterized in that: The pile group rotation assembly (2) comprises a pile group rotation device (2.1) and a plurality of single pile rotation devices (2.2); The pile group rotating device (2.1) comprises a driving member (2.1.1) and a mounting plate (2.1.2), wherein the driving member (2.1.1) is fixedly mounted on the mounting base (1), the mounting plate (2.1.2) is movably arranged above the mounting base (1), and the mounting plate (2.1.2) is fixedly connected to the driving member (2.1.1); A plurality of the single pile rotating devices (2.2) are arranged at intervals on the mounting plate (2.1.2); The single pile rotating device (2.2) comprises a first telescopic member (2.2.1), a swing arm (2.2.2) and a mounting structure (2.2.3); The swing arm (2.2.2) is hinged on the mounting plate (2.1.2); One end of the first telescopic member (2.2.1) is hingedly mounted on the mounting plate (2.1.2), and the other end is hingedly connected to the swing arm (2.2.2); The mounting structure (2.2.3) is arranged on the swing arm (2.2.2); The rockfall protection pile (3) is fixedly mounted on the mounting structure (2.2.3).

3. The tunnel entrance rockfall protection system according to claim 2, characterized in that: The installation structure (2.2.3) comprises an installation groove (2.2.3.1), a screw rod (2.2.3.2) and a rotating machine (2.2.3.3); The mounting groove (2.2.3.1) is arranged on the swing arm (2.2.2), and the rotating machine (2.2.3.3) is arranged on a side of the swing arm (2.2.2) away from the rockfall protection pile (3); the screw rod (2.2.3.2) passes through the mounting groove (2.2.3.1) and is connected to the rotating machine (2.2.3.3); The rockfall protection pile (3) comprises a pile body (3.1) and a fixed connector (3.2) fixedly arranged on the pile body (3.1), wherein a threaded hole (3.3) is arranged at the center of the fixed connector (3.2); the fixed connector (3.2) is used to be inserted into the mounting groove (2.2.3.1), and the rotating machine (2.2.3.3) is used to drive the screw rod (2.2.3.2) to rotate, so that the screw rod (2.2.3.2) is inserted into the threaded hole (3.3) for engagement, thereby fixing the rockfall protection pile (3) on the mounting structure (2.2.3).

4. The tunnel entrance rockfall protection system according to claim 3, characterized in that: The tunnel entrance rockfall protection system also includes an automated protection pile installation assembly, wherein the automated protection pile installation assembly includes a protection pile installation device (5) and a protection pile moving device (6); The protective pile installation device (5) comprises a fixed arch frame (5.1), a movable arch frame (5.2), a plurality of second telescopic members (5.3), a plurality of third telescopic members (5.4) and a plurality of clamping members (5.5); The fixed arch frame (5.1) is fixedly arranged on the lower side of the mounting base (1), and the movable arch frame (5.2) is arranged outside the tunnel opening and corresponds to the fixed arch frame (5.1); A plurality of the second telescopic members (5.3) are arranged at intervals between the fixed arch frame (5.1) and the movable arch frame (5.2), and the second telescopic members (5.3) connect the fixed arch frame (5.1) and the movable arch frame (5.2); A plurality of the third telescopic members (5.4) are arranged at intervals on the upper side of the movable arch frame (5.2), and one of the clamping members (5.5) is fixedly mounted on one of the third telescopic members (5.4); The third telescopic member (5.4) is used to telescopically adjust the position of the clamping member (5.5), so that the clamping member (5.5) can fix and clamp the rockfall protection pile (3), and the rockfall protection pile (3) is at a height corresponding to the pile group rotating assembly (2); The second telescopic member (5.3) is used to drive the movable arch frame (5.2) to move toward the fixed arch frame (5.1), so that the clamping member (5.5) drives the rockfall protection pile (3) to move, thereby realizing the installation of the rockfall protection pile (3) on the pile group rotating assembly (2); The protection pile moving device (6) is arranged on a side of the protection pile installation device (5) away from the tunnel opening, and comprises a base (6.1), an arched slide rail group, a moving wheel group (6.3), a pushing structure (6.4) and a protection pile self-locking structure (6.5); The arched slide rail group comprises at least two arched slide rails (6.2), and the at least two arched slide rails (6.2) are arranged on the base (6.1) at intervals; There are two movable wheel sets (6.3), which are respectively arranged on the two arched slide rails (6.2); The protection pile self-locking structure (6.5) is fixedly arranged on the moving wheel group (6.3) far away from the tunnel opening, and is used for self-locking and fixing the rockfall protection pile (3); The pushing structure (6.4) is arranged on a side of the protection pile self-locking structure (6.5) away from the tunnel opening, and is used to push the rockfall protection pile (3) so that the rockfall protection pile (3) moves to the protection pile installation device (5); The arched slide rail (6.2) is also used to set up a rockfall protection shed (7).

5. The tunnel entrance rockfall protection system according to claim 4, characterized in that: The base (6.1) comprises a base body (6.1.1), a support member (6.1.2), a buffer member (6.1.3) and a limit member (6.1.4); The seat body (6.1.1) is provided with a cavity; The support member (6.1.2) and the buffer member (6.1.3) are arranged in the cavity, and the support member (6.1.2) is connected to the upper side of the buffer member (6.1.3); a track groove is arranged on the support member (6.1.2); the track groove is used to install and move the arched slide rail (6.2); The limiting member (6.1.4) is used to limit the support member (6.1.2) and the buffer member (6.1.3) when the rockfall protection pile (3) is moved and adjusted.

6. The tunnel entrance rockfall protection system according to any one of claims 1 to 5, characterized in that: The tunnel portal rockfall protection system further comprises a dust cover (8), wherein the dust cover (8) is fixedly arranged above the pile group rotating assembly (2).

7. A method for protecting tunnel entrance from rockfall, characterized in that: The tunnel entrance rockfall protection system according to claim 5 comprises: S1: Exploring the surrounding environment of the tunnel entrance, and determining the rockfall protection method and height to be adopted for the tunnel entrance; S2: The installation base (1) is fixedly arranged near the tunnel entrance, the pile group rotating assembly (2) is located at a protection height above the tunnel entrance, a plurality of rockfall protection piles (3) are fixedly installed on the pile group rotating assembly (2), and a protection net (4) is stretched on the rockfall protection piles (3); S3: According to the required rockfall protection method for the tunnel entrance, the rockfall protection pile (3) is driven to rotate by the pile group rotating assembly (2), so that the rockfall protection pile (3) and the protection net (4) are in the rockfall protection position, so as to perform rockfall protection at the tunnel entrance.

8. The method for protecting tunnel entrance from falling rocks according to claim 7, characterized in that: The step S2 specifically includes: S2.1: The mounting base (1) is fixedly arranged near the tunnel opening so that the pile group rotating assembly (2) is at a protective height above the tunnel opening; S2.2: The protection pile installation device (5) is fixedly installed on the lower side of the pile group rotating assembly (2), and the protection pile moving device (6) is installed outside the tunnel opening; the rockfall protection pile (3) is moved and installed on the pile group rotating assembly (2) by means of the protection pile installation device (5) and the protection pile moving device (6); S2.3: Tension the protection net (4) on the rockfall protection pile (3).

9. The method for protecting tunnel entrance from falling rocks according to claim 8, characterized in that: The step S2.2 specifically includes: S2.2.1: The protection pile installation device (5) is fixedly installed on the lower side of the pile group rotating assembly (2), and the protection pile moving device (6) is installed outside the tunnel opening; S2.2.2: Put the second telescopic member (5.3) in an extended state; S2.2.3: The rockfall protection pile (3) is self-locked and fixed by the protection pile self-locking structure (6.5), and the rockfall protection pile (3) is driven to move along the arched slide rail (6.2) by the moving wheel group (6.3), so that the rockfall protection pile (3) moves to a position close to the corresponding clamping member (5.5); the rockfall protection pile (3) is pushed by the pushing structure (6.4), so that the rockfall protection pile (3) moves toward the clamping member (5.5); after the rockfall protection pile (3) is clamped by the corresponding clamping member (5.5), the locking of the protection pile self-locking structure (6.5) is released; S2.2.4: Repeat step S2.2.3 until each clamping member (5.5) is clamped with a rockfall protection pile (3); S2.2.5: adjusting the extension length of each third telescopic member (5.4) so ​​that the rockfall protection piles (3) clamped by the clamping member (5.5) are all at a height corresponding to the pile group rotating assembly (2); S2.2.6: Shorten the second telescopic member (5.3) to move the rockfall protection pile (3) toward the pile group rotating assembly (2), and install all the rockfall protection piles (3) onto the pile group rotating assembly (2).

10. The method for protecting tunnel entrance from falling rocks according to claim 7, characterized in that: The step S3 specifically includes: If the rockfall protection method to be adopted for the tunnel opening is active protection, the driving member (2.1.1) drives the mounting plate (2.1.2) to rotate so that the rockfall protection pile (3) is close to the slope surface near the tunnel opening; and each single pile rotating device (2.2) is adjusted in turn so that the rockfall protection pile (3) and the protection net (4) installed on each single pile rotating device (2.2) are close to the slope surface; If the tunnel opening rockfall protection method to be adopted is passive protection, the driving member (2.1.1) drives the mounting plate (2.1.2) to rotate so that the angle between the rockfall protection pile (3) and the slope surface is 30 to 90 degrees.

Images