A reusable rockfall arresting device and method of construction

Abstract

The present application relates to the technical field of geological disaster prevention, and provides a reusable rockfall blocking device and a construction method, wherein the reusable rockfall blocking device comprises elastic elements, a wire winding device, a plurality of horizontal cables and a plurality of longitudinal cables; the horizontal cables are distributed along the Z direction at intervals; the horizontal cables comprise at least two horizontal units; the horizontal units can be connected to a mountain body through the elastic elements; the longitudinal cables are distributed along the Y direction at intervals; the longitudinal cables comprise two longitudinal units, the two longitudinal units cross the horizontal cables once each time, and the bottom ends of the two longitudinal units are connected to the wire winding device; the wire winding device can tighten the longitudinal units and the horizontal units are close to each other. Using the reusable rockfall blocking device, the problem that the existing rockfall blocking device is irreversibly damaged after being impacted by rockfall, the protective net needs to be frequently replaced, and the maintenance is difficult, the maintenance cost is high, and the surrounding economic activities are greatly affected can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological disaster prevention, in particular to a reusable rockfall blocking device and a construction method. BACKGROUND

[0002] At present, a large number of traffic infrastructures and large buildings have been planned and constructed in the southwest mountainous area of China, and the dangerous rockfall is very developed in the southwest mountainous area. At present, when the project is located under the dangerous rockfall, a large number of rockfall blocking devices need to be set on the mountain. The existing rockfall blocking device mainly comprises a support rod directly connected to the mountain and a protective net located between the support rods. The protective net generally comprises transverse steel wires and longitudinal steel wires arranged orthogonally, and the transverse steel wires and the longitudinal steel wires are directly connected to the support rods. When the rockfall rolls and impacts the protective net, the protective net will be deformed or damaged irreversibly, so that it cannot be used continuously and needs to be replaced with a new protective net. Since the rockfall blocking device is usually set in the mountain, it is difficult to replace, and when the protective net is replaced, it will also affect other economic activities such as vehicle passing at the corresponding position, thereby causing additional economic losses. Therefore, the existing rockfall blocking device has the problems of high maintenance cost, high maintenance difficulty, and great influence on other economic activities when replacing the protective net. SUMMARY

[0003] The present application aims to solve the problem that the existing rockfall blocking device will be irreversibly damaged after being impacted by the rockfall, and the protective net needs to be frequently replaced, resulting in high maintenance difficulty, high maintenance cost, and great influence on surrounding economic activities. The present application provides a reusable rockfall blocking device and a construction method.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A reusable rockfall blocking device comprises an elastic element, a wire winding device, and a protective net.

[0006] The protective net comprises a plurality of transverse cables and a plurality of longitudinal cables.

[0007] The transverse cables are distributed along the height direction. Each transverse cable comprises at least two transverse units arranged side by side. Both ends of the transverse unit are connected to the elastic element. The transverse unit can be connected to the mountain through the elastic element.

[0008] The longitudinal cables are arranged along the length direction of the transverse cables; each of the longitudinal cables comprises two longitudinal units arranged on two sides of the transverse cable respectively; one end of the two longitudinal units is connected to each other, the two longitudinal units cross each other at least once between two adjacent transverse cables, and the other end of the two longitudinal units is connected to a cable winder; the cable winder can tighten the longitudinal units so as to make the two transverse units at the corresponding positions close to each other.

[0009] Taking a Cartesian coordinate system with X, Y and Z directions and the Z direction being parallel to the height direction as an example, the transverse cables of the scheme are arranged along the Z direction, and if the length of the transverse cable and the transverse unit is arranged along the Y direction, the length of the longitudinal cable and the longitudinal unit can be arranged in the ZY plane relative to the Y direction, such as being arranged along the Z direction, as long as the transverse cable and the transverse unit can form a protective net in the ZY plane; the distribution direction of the transverse unit and the longitudinal unit is inclined relative to the ZY plane, such as being arranged along the X direction, as long as the positions of the several transverse units of each transverse cable and the two longitudinal units of each longitudinal cable along the X axis are staggered.

[0010] The distribution interval, size and material of the transverse cable and the longitudinal cable are determined according to the size of the potential rockfall and the energy level of the rockfall; the two transverse units of the transverse cable can be two independent segments or only two parts of an integral transverse cable; the two longitudinal units of the longitudinal cable can also be two independent segments or only two parts of an integral transverse cable, but the top ends of the two longitudinal units must be connected to each other and the bottom ends must be connected to the cable winder, so that the transverse cable can be surrounded between the two longitudinal units, and the interval between the two longitudinal units can be reduced under the tightening action of the cable winder, so that the interval between the transverse units arranged at intervals can also be correspondingly reduced until being closely attached; the two longitudinal units cross each other at least once between two adjacent transverse cables, that is, if the number of the transverse cables is two, the two longitudinal units form a shape similar to “8”.

[0011] The elastic element can be a simple coil spring according to the demand of vibration reduction, so as to absorb the impact of the rockfall, or can be an elastic element with buffering and energy consumption, such as an elastic rubber block; the cable winder is a device capable of generating a torsion force to tighten the longitudinal cable.

[0012] The rockfall blocking device of the scheme comprises a plurality of transverse cables and longitudinal cables, and the distribution spacing of the transverse cables and the longitudinal cables is reasonably designed, so that the rockfall blocking device can block the rockfall of the corresponding size as in the prior art. Meanwhile, the transverse cable comprises a plurality of transverse units distributed at intervals and connected to the mountain body by elastic elements, and the longitudinal cable comprises two longitudinal units, one end of which is connected to each other and the other end of which is connected to a winding device, and each transverse unit is crossed at least once, so that the longitudinal unit can tighten the transverse unit distributed at intervals by tightening the winding device. When impacted by the rockfall, the elastic element will be stretched and deformed under the impact of the rockfall, and the tightened transverse unit will also be scattered under the impact of the rockfall, thereby driving the longitudinal unit to rotate the winding device and release a part of the longitudinal cable to scatter the longitudinal cable by a corresponding distance. In this process, the deformation of the elastic element and the action of the winding device rotating and releasing a part of the longitudinal cable can replace the elastic deformation of the transverse cable and the longitudinal cable, thereby preventing the irreversible deformation of the transverse cable and the longitudinal cable. Meanwhile, the rotating action of the winding device can also dissipate the mechanical energy of the rockfall transmitted to the protective net, and if the elastic element with energy dissipation function is selected, the elastic element can also help dissipate the mechanical energy brought by the rockfall, thereby eliminating the vibration of the protective net. In summary, the scheme does not need to replace the transverse cable and the longitudinal cable after being impacted by the rockfall, and can be repeatedly used, thereby greatly reducing the maintenance cycle and the maintenance cost, and reducing the influence on the surrounding economic activities due to maintenance. After the impact of the rockfall ends, the elastic element rebounds and the winding device rotates to return the transverse cable and the longitudinal cable to the original position, thereby further improving the maintenance-free property of the scheme and reducing the maintenance cost.

[0013] As a preferred scheme of the present application, the two ends of the transverse cable are provided with winding structures; a single transverse cable has two transverse units, and the corresponding ends of the two transverse units are connected to each other and sleeved on the winding structures; and the elastic elements are connected to the winding structures.

[0014] The transverse cable of the scheme is a ring cable, and the two ends of the ring cable are sleeved on the winding structures at the corresponding ends, so as to form two transverse units on the two sides of the winding structures respectively; and the ring cable can be obtained by connecting the two ends of a straight cable to each other.

[0015] The scheme adopts a ring-shaped transverse cable, and the two ends of the transverse cable are sleeved on the winding structures respectively, so as to form two transverse units, and the elastic structure is connected to the winding structures. Compared with the independent transverse units and the corresponding elastic structures, the scheme can reduce the number of required elastic structures, thereby reducing the manufacturing cost and the structural complexity of the scheme.

[0016] As a preferred scheme of the present application, a plurality of elastic elements are connected to each winding structure; and the elastic elements are arranged on at least one side of the winding structure normal to the protective net and the side of the winding structure away from the transverse cable.

[0017] The elastic element is arranged on at least three sides of the winding structure, so that the impact in the corresponding direction can be absorbed from three directions, and the irreversible deformation and damage of the transverse cable under the impact of falling rocks can be reduced as much as possible.

[0018] As a preferred scheme of the present application, the two ends of the transverse cable are further provided with ground beams respectively; the ground beams can be connected to the mountain, and the ground beams have grooves towards one end of the transverse cable; the winding structure is located in the grooves of the ground beams, and the end of the elastic element away from the winding structure is anchored to the side wall of the groove of the ground beam.

[0019] The end of the ground beam towards the transverse cable is provided with a groove, which can be a through groove or a non-through groove, as long as the winding structure can be placed in the groove, so as to facilitate the arrangement of the elastic element.

[0020] The ground beams with grooves are arranged at the two ends of the transverse cable, and the elastic element is arranged in the groove, so that the side wall of the groove can be used to arrange the elastic element on three sides of the winding structure; at the same time, the ground beam can also ensure the reliable connection of the transverse cable and the mountain.

[0021] As a preferred scheme of the present application, the winding structure is a pulley, and the axis of the pulley is arranged in the height direction.

[0022] The pulley is used as the winding structure in the present scheme, and when the present scheme is impacted to cause the deformation and displacement of the transverse cable, the pulley can reduce the friction with the transverse cable through its rotation, thereby reducing the wear of the contact part of the transverse cable and the pulley and improving the service life of the present scheme; the axis of the pulley is arranged in the height direction, that is, the diameter of the pulley is the distance between the two transverse units.

[0023] As a preferred scheme of the present application, the winding device is a constant-torque winding device.

[0024] The constant-torque winding device is a winding device that can maintain the torque of the wound longitudinal cable as a constant value.

[0025] The constant-torque winding device is used in the present scheme, so that the torque of the wound longitudinal cable can be maintained unchanged, thereby avoiding the situation that the winding device cannot tighten the longitudinal cable again after the present scheme is impacted multiple times, and further causing the relaxation of the longitudinal cable and the failure of the transverse unit of the transverse cable to be folded.

[0026] As a preferred scheme of the present application, the elastic element is a spiral spring.

[0027] The spiral spring is used as the elastic element in the present scheme, which is reliable in work, long in service life and good in maintenance-free property, is more suitable for the harsh mountain environment, and prolongs the maintenance period of the present scheme.

[0028] As a preferred scheme of the present application, the transverse cable and the longitudinal cable are both made of steel strand.

[0029] The scheme uses steel strand as the transverse cable and the longitudinal cable, and the steel strand has excellent strength and durability, which can ensure the service life of the transverse cable and the longitudinal cable.

[0030] A construction method of a reusable rockfall blocking device, applied to a reusable rockfall blocking device of the present application, comprises the following steps:

[0031] A. The two ends of all the transverse cables are fixed to the mountain body through elastic elements respectively; the wire winding device of all the longitudinal cables (4) is fixed to the mountain body;

[0032] B. The wire winding device is wound tightly to make the transverse units of each transverse cable close to each other at the positions corresponding to the longitudinal cables.

[0033] In step A, the construction sequence of the transverse cable and the longitudinal cable can be determined according to the site conditions, such as first constructing all the transverse cables, then constructing all the longitudinal cables, or constructing the transverse cable and the longitudinal cable synchronously.

[0034] The construction method of the reusable rockfall blocking device of the scheme adopts the construction sequence of first installing all the transverse cables and all the longitudinal cables, and finally winding the wire winding device; compared with other construction sequences, such as winding the corresponding wire winding device after installing one longitudinal cable, the scheme can avoid the irregular deformation of the transverse cable due to local winding, and the situation that the irregular deformation of the transverse cable hinders the subsequent installation of the longitudinal cable.

[0035] As a preferred scheme of the present application, step A comprises the following steps:

[0036] A1. The two ends of the transverse cable are connected to the mountain body through elastic elements; and the installation of all the transverse cables is completed.

[0037] A2. One end of the longitudinal cable is lifted upward from the transverse cable at the bottom, and is moved to the other side of the transverse cable every time it passes through one transverse cable; when the end of the longitudinal cable is lifted above the transverse cable at the top, the end of the longitudinal cable is lowered to the transverse cable at the bottom, and the other side of the transverse cable is moved every time it passes through one transverse cable, so that the longitudinal cable forms a cross at both ends of each transverse cable; when the end of the longitudinal cable is lowered below the transverse cable at the bottom, both ends of the longitudinal cable are connected to the wire winding device; and the installation of all the longitudinal cables is completed.

[0038] The scheme selects the sequence of first constructing all the transverse cables and then constructing the longitudinal cable, and the transverse cable can be used as a support in the construction process of the longitudinal cable, thereby eliminating the need to set up an independent support structure for the longitudinal cable in the construction process of the longitudinal cable, and the construction process can be simplified.

[0039] As a preferred scheme of the present application, the tightening operation of the twiner is alternately performed from the middle to both sides in step B.

[0040] Compared with other schemes, such as sequentially tightening all the twiners from one side to the other side, the sequence of the twiner tightening operation adopted by the present scheme can reduce irregular deformation of the transverse cable in the process of tightening the longitudinal cable, and ensure that the transverse cable is balanced in stress and deformed in coordination in the process of the tightening operation.

[0041] In summary, due to the adoption of the above technical scheme, the present application has the following beneficial effects:

[0042] 1. The rockfall blocking device of the present scheme comprises a plurality of transverse cables and longitudinal cables, and the distribution spacing of the transverse cable and the longitudinal cable is reasonably designed, so that the rockfall blocking device can block the rockfall of the corresponding size like the prior art.

[0043] Meanwhile, the transverse cable of the present scheme comprises a plurality of transverse units distributed at intervals and is connected to the mountain body by elastic elements, and the longitudinal cable comprises two longitudinal units, one end of which is connected to each other, and the other end is connected to the twiner, and at least crosses once through each transverse unit, so that the longitudinal unit can tighten the transversely distributed transverse units by tightening the twiner; when impacted by the rockfall, the elastic elements will be stretched and deformed under the impact of the rockfall, and the tightened transverse units will also be scattered under the impact of the rockfall, thereby driving the longitudinal unit to resist the torsion of the twiner to rotate the twiner and release a part of the length of the longitudinal cable to scatter the longitudinal cable by a corresponding distance; in this process, the deformation of the elastic elements and the action of the twiner rotating and releasing a part of the longitudinal cable can replace the elastic deformation of the transverse cable and the longitudinal cable, thereby preventing the irreversible deformation of the transverse cable and the longitudinal cable; meanwhile, the rotating action of the twiner can also dissipate the mechanical energy of the rockfall transmitted to the protective net, and if the elastic elements with energy dissipation function are selected, the elastic elements can also help dissipate the mechanical energy brought by the rockfall, thereby eliminating the vibration of the protective net; in summary, the present scheme does not need to replace the transverse cable and the longitudinal cable after being impacted by the rockfall, and can be repeatedly used, thereby greatly reducing the maintenance period and maintenance cost, and reducing the influence on the surrounding economic activities due to maintenance; and after the impact of the rockfall ends, the elastic elements rebound and the twiner rotates back to the original position, thereby further improving the maintenance-free property and reducing the maintenance cost of the present scheme.

[0044] 2, The construction method of the reusable rockfall blocking device of the scheme adopts the construction sequence of first installing all the transverse cables and all the longitudinal cables, and finally tightening the wire winding device; compared with other construction sequences, such as tightening the corresponding wire winding device after installing each longitudinal cable, the scheme can avoid irregular deformation of the transverse cable due to local tightening, and the situation that irregular deformation of the transverse cable hinders subsequent installation of the longitudinal cable;

[0045] If the sequence of first constructing all the transverse cables and then constructing the longitudinal cables is further adopted, the transverse cable can serve as support during the construction process of the longitudinal cable, so that it is not necessary to set up an independent support structure for the longitudinal cable during the construction process, and the construction process can be simplified. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is a three-dimensional structural schematic diagram of a reusable rockfall blocking device of the application;

[0047] Figure 2 is a schematic diagram of the arrangement of the longitudinal cable and the transverse cable in the ZX plane;

[0048] Figure 3 is a schematic diagram of the arrangement of a reusable rockfall blocking device of the application in the ZY plane;

[0049] Figure 4 is a schematic diagram of the arrangement of the ground beam and the elastic element in the XY plane;

[0050] Figure 5 is a schematic diagram of the arrangement of the ground beam and the elastic element in the ZY plane;

[0051] Figure 6 is a top view schematic diagram of a reusable rockfall blocking device of the application before being impacted by rockfall;

[0052] Figure 7 is a top view schematic diagram of a reusable rockfall blocking device of the application after being impacted by rockfall;

[0053] Figure legend: 1-elastic element; 2-wire winding device; 3-transverse cable; 4-longitudinal cable; 5-winding structure; 6-ground beam; 31-transverse unit; 41-longitudinal unit. DETAILED DESCRIPTION

[0054] The application will be described in further detail below with reference to the drawings.

[0055] In order to make the purpose, technical scheme and advantages of the application clearer and more apparent, the application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0056] Example 1

[0057] like Figures 1 to 7 As shown, the reusable rockfall barrier device used in this embodiment includes an elastic element 1, a wire winder 2, several transverse cables 3 and several longitudinal cables 4.

[0058] The length of the transverse cable 3 is set along the Y direction; the transverse cables 3 are spaced apart along the Z direction; each transverse cable 3 includes at least two transverse units 31 spaced apart along the X direction; both ends of the transverse unit 31 are connected to elastic elements 1; the transverse unit 31 can be connected to the mountain through the elastic elements 1; the length of the longitudinal cable 4 is set along the Z direction; the longitudinal cables 4 are spaced apart along the Y direction; each longitudinal cable 4 includes two longitudinal units 41 spaced apart along the X direction, the two longitudinal units 41 are located on both sides of the transverse cable 3; the top ends of the two longitudinal units 41 are connected to each other, the two longitudinal units 41 cross at least once between two adjacent transverse cables 3, and the bottom ends of the two longitudinal units 41 are connected to the winder 2; the winder 2 can tighten the longitudinal units 41 so that the two transverse units 31 at corresponding positions are brought closer to each other.

[0059] It should be noted that the X, Y, and Z directions are three directions in the Cartesian coordinate system, and the Z direction is parallel to the height direction. In this embodiment, the transverse cable 3 is arranged along the Y direction, the longitudinal cable 4 is arranged along the Z direction, and the transverse unit 31 is distributed along the X direction. However, depending on the actual needs, the angle between the transverse cable 3 and the longitudinal cable 4, as well as the angle between the distribution direction of the transverse unit 31 and the ZY plane, can also be less than 90 degrees. Figures 1 to 3 and Figures 6 to 7 For ease of demonstration, the number of transverse cables 3 and longitudinal cables 4 has been reduced. The actual number of transverse cables 3 and longitudinal cables 4, as well as their spacing, need to be adjusted according to the size and energy level of the potential falling rocks.

[0060] In this embodiment, the transverse cable 3 is an annular cable formed by connecting the two ends of a straight wire. The straight wire is specifically a steel strand. Both ends of the transverse cable 3 are provided with a winding structure 5. The two ends of the transverse cable 3 are sleeved on the winding structure 5, thereby forming two transverse units 31 on both sides of the winding structure 5 along the X direction. Specifically, the winding structure 5 is a pulley with its axis arranged along the height direction. The diameter of the pulley is the distance between the two transverse units 31. The pulley diameter is preferably 20cm to 30cm. This size can avoid the transverse units 31 being too small, which would result in the transverse units 31 and the longitudinal units 41 opening too little when the embodiment is impacted, thus resulting in limited cushioning effect. It can also avoid the situation where the pulley size is too large, making it difficult to install. The pulley is also provided with rims on both sides along the height direction to prevent the transverse cable 3 from coming off the pulley.

[0061] In this embodiment, the longitudinal cable 4 also uses steel strand, and its diameter and material are the same as those of the transverse cable 3; the longitudinal cable 4 uses a straight wire, and during installation...Figure 2 As shown, the two ends are placed on both sides of the transverse cable 3 along the X direction, thereby forming two longitudinal units 41 on both sides of the transverse cable 3, and crossing once between the two transverse cables 3 to ensure that the longitudinal cable 4 is balanced by force; and both ends of the longitudinal cable 4 are located below the bottom transverse cable 3. The winding device 2 is a constant torque winding device, and the torque is set to be able to wind the longitudinal cable 4 tightly until the longitudinal cable 4 makes the two transverse units 31 of each transverse cable 3 stick to each other at the corresponding position.

[0062] like Figures 4 to 5 As shown, the elastic element 1 is directly connected to the winding structure 5, and each winding structure 5 is connected to multiple elastic elements 1; the elastic element 1 is at least provided on both sides of the winding structure 5 along the X direction and on the side of the winding structure 5 away from the transverse cable 3 along the Y direction; specifically, the elastic element 1 is a helical spring, and each helical spring is connected to the axis of the winding structure 5, so that the winding structure 5 is balanced by force, and the axes of each elastic element 1 connected to each winding structure 5 are on the same horizontal plane, that is, on the XY plane, so as to better absorb the impact along the horizontal direction;

[0063] Correspondingly, ground beams 6 are respectively provided at both ends of the transverse cable 3; the ground beams 6 can be connected to the mountain, and the end of the ground beam 6 facing the transverse cable 3 has a groove; the winding structure 5 is located in the groove of the ground beam 6, and the end of the elastic element 1 away from the winding structure 5 is anchored to the side wall of the groove of the ground beam 6; specifically, as Figures 4 to 5 As shown, the ground beam 6 is a concrete structure. A rectangular through-slot is provided on the section of the ground beam 6 facing the transverse cable 3, thus forming a "U"-like shape. The end of the elastic element 1 away from the winding structure 5 can be anchored to the three inner walls of the rectangular through-slot. The end of the ground beam 6 away from the transverse cable 3 also has tenons on both sides along the X-direction for connection with the mountain. Figure 3 As shown, in this embodiment, the ground beam 6 is divided into several segments along the height direction, so that the distribution position of the ground beam 6 can be adjusted to adapt the ground beam 6 to the shape of the mountain; each segment is connected to three transverse cables 3.

[0064] The reusable rockfall barrier device of this embodiment is installed on the mountainside, and the winding device 2 is tightly wound so that the two transverse units 31 of each transverse cable 3 are as follows. Figure 6 As shown, they are closely attached to each other; if impacted by falling rocks, the two transverse units 31 of the transverse cable 3 will open under the impact of the falling rocks, and drive the longitudinal cable 4 to open as follows. Figure 7 As shown, this causes the longitudinal cable 4 to drive the winding device 2 to rotate, absorbing the impact of falling rocks; the elastic element 1 will also deform, thus helping to absorb the impact of falling rocks.

[0065] Example 2

[0066] A construction method of a reusable rockfall blocking device, applied to the reusable rockfall blocking device in embodiment 1, comprising the following steps:

[0067] A. Fix both ends of all the lateral cables 3 to the mountain body through the elastic elements 1 respectively; fix the winding device of all the longitudinal cables 4 to the mountain body;

[0068] B. Tighten the winding device 2 to make the lateral units 31 of each of the lateral cables 3 close to each other to be in close contact at the positions corresponding to the longitudinal cables 4.

[0069] Specifically, step A comprises the following steps:

[0070] A1. Connect both ends of the lateral cable 3 to the mountain body through the elastic element 1; complete the installation of all the lateral cables 3;

[0071] A2. Lift one end of the longitudinal cable 4 from the lateral cable 3 at the bottom upward, and move to the other side of the lateral cable 3 every time passing one lateral cable 3; when the end of the longitudinal cable 4 is lifted above the lateral cable 3 at the top, lower the end of the longitudinal cable 4 to the lateral cable 3 at the bottom, and move to the other side of the lateral cable 3 every time passing one lateral cable 3, so that the longitudinal cable 4 forms a cross at both ends on each lateral cable 3; when the end of the longitudinal cable 4 is lowered below the lateral cable 3 at the bottom, connect both ends of the longitudinal cable 4 to the winding device 2; complete the installation of all the longitudinal cables 4.

[0072] In step A1, since this embodiment comprises the ground beam 6, for this embodiment, step A1 further comprises the following steps:

[0073] A11. Determine the installation position of the ground beam 6 on the two side mountain bodies respectively, excavate the ground beam 6 base groove at the predetermined installation position on the mountain body; prefabricate the ground beam 6 and the winding structure 5 connected to the ground beam 6;

[0074] A12. Install the ground beam 6 in the ground beam 6 base groove, fill the concrete in the gap between the ground beam 6 and the ground beam 6 base groove; complete the installation of all the ground beams 6 on the two side mountain bodies from bottom to top in turn, and wait for the concrete to reach the design strength;

[0075] A13. Wind the two ends of the linear lateral cable 3 on the pulleys in the ground beam 6 on the two side mountain bodies respectively, straighten the lateral cable 3, and connect the two ends to each other by using the steel buckle, so as to form the ring-shaped lateral cable 3; install all the lateral cables 3 from bottom to top in turn;

[0076] In step B, the tightening sequence of the winding device 2 is to alternately proceed from the middle to the two sides, such as Figure 3As shown, for the winding devices 2 of Nos. I, II, III, IV, V, VI, VII, the sequence of the tightening operation of the present embodiment can be IV, III, V, II, VI, I, VII or IV, V, III, VI, II, VII, I; the winding devices 2 are tightened until the two lateral units 31 of each lateral cable 3 are tightly attached to each other, like Figure 6 As shown.

[0077] The above merely describes the preferred embodiments of the present application, but should not be used to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reusable rockfall barrier device, characterized in that, It includes an elastic element (1), a winding device (2), and a protective net; The protective netting includes several transverse cables (3) and several longitudinal cables (4). The transverse cables (3) are spaced apart along the height direction; each transverse cable (3) contains at least two transverse units (31) arranged side by side; both ends of each transverse unit (31) are connected to elastic elements (1); the transverse unit (31) can be connected to the mountain through the elastic elements (1); The longitudinal cables (4) are spaced apart along the length of the transverse cables (3); each longitudinal cable (4) includes two longitudinal units (41) located on both sides of the transverse cable (3); one end of the two longitudinal units (41) is connected to each other, the two longitudinal units (41) cross at least once between two adjacent transverse cables (3), and the other end of the two longitudinal units (41) is connected to the winding device (2); the winding device (2) can tighten the longitudinal units (41) so that the two transverse units (31) at corresponding positions are brought closer to each other; The transverse cable (3) has a winding structure (5) at both ends; each transverse cable (3) has two transverse units (31), and the corresponding ends of the two transverse units (31) are connected to each other and sleeved on the winding structure (5); the elastic element (1) is connected to the winding structure (5).

2. The reusable rockfall barrier device according to claim 1, characterized in that, Each of the winding structures (5) is connected to a plurality of elastic elements (1); the elastic elements (1) are at least disposed on both sides of the winding structure (5) along the normal of the protective net and on the side of the winding structure (5) away from the transverse cable (3).

3. A reusable rockfall barrier device according to claim 2, characterized in that, The transverse cable (3) is also provided with ground beams (6) at both ends; the ground beams (6) can be connected to the mountain, and the end of the ground beams (6) facing the transverse cable (3) has a groove; the winding structure (5) is located in the groove of the ground beams (6), and the end of the elastic element (1) away from the winding structure (5) is anchored to the side wall of the groove of the ground beams (6).

4. A reusable rockfall barrier device according to any one of claims 1 to 3, characterized in that, The winding structure (5) is a pulley, and the axis of the pulley is set along the height direction.

5. A reusable rockfall barrier device according to any one of claims 1 to 3, characterized in that, The winding device (2) is a constant torque winding device.

6. A reusable rockfall barrier device according to any one of claims 1 to 3, characterized in that, The elastic element (1) is a helical spring.

7. A construction method for a reusable rockfall barrier device, characterized in that, An application to a reusable rockfall barrier as described in any one of claims 1 to 6 comprises the following steps: A. Fix both ends of all transverse cables (3) to the mountain through elastic elements (1); fix the winding devices of all longitudinal cables (4) to the mountain. B. Tighten the winding device (2) so that the transverse units (31) of each of the transverse cables (3) are close to each other at the positions corresponding to the longitudinal cables (4) until they are in close contact.

8. The construction method of a reusable rockfall barrier device according to claim 7, characterized in that, Step A includes the following steps: A1. Connect both ends of the transverse cable (3) to the mountain through elastic elements (1); complete the installation of all the transverse cables (3); A2. Raise one end of the longitudinal cable (4) upward from the transverse cable (3) located at the bottom, and move it to the other side of the transverse cable (3) after passing each transverse cable (3); when the end of the longitudinal cable (4) is raised above the transverse cable (3) located at the top, lower the end of the longitudinal cable (4) to the transverse cable (3) located at the bottom, and move the other side of the transverse cable (3) after passing each transverse cable (3), so that the longitudinal cable (4) crosses at the upper and lower ends of each transverse cable (3); when the end of the longitudinal cable (4) is lowered below the transverse cable (3) located at the bottom, connect both ends of the longitudinal cable (4) to the winding device (2); complete the installation of all longitudinal cables (4).

9. A construction method for a reusable rockfall barrier device according to any one of claims 7 to 8, characterized in that, In step B, the winding operation of the winding device (2) is carried out alternately from the middle to both sides.

Images