Avalanche prevention equipment

Abstract

The present invention discloses a device and method for preventing and controlling avalanches, and belongs to the technical field of design and manufacturing of disaster prevention and mitigation equipment. A device for preventing and controlling avalanches is provided, which can effectively manage snow on steep mountain tops and exposed bedrock areas. The present invention also provides a method for preventing and controlling avalanches using the device. The device includes at least two groups of snow management structures. The snow that needs to be managed is divided into a corresponding number of snow blocks by the groups of snow management structures sequentially arranged in the avalanche occurrence area along the height direction to reduce or eliminate the risk of snow avalanche. The method first collects data, then determines and designs the snow management structure based on the data, and finally arranges the snow management structure in the avalanche occurrence area to complete the management of the snow.

Description

Technical Field

[0001] The present invention relates to a prevention and control device, in particular to a prevention and control device for avalanches, belonging to the technical field of design and manufacturing of disaster prevention and mitigation equipment. The present invention also relates to a prevention and control method for controlling avalanches using the prevention and control device. Background Art

[0002] Explanation of terms:

[0003] Avalanche: When the internal cohesion of the snow on the hillside cannot resist the pull of gravity, it slides downward, causing a large amount of snow to collapse, thereby threatening the safety of roads, villages, etc. at the bottom of the slope.

[0004] Avalanches are deadly snow-related natural disasters, often called the "White Death." Unlike other disasters, avalanches occur suddenly, move rapidly, and produce large amounts of debris. They can devastate vast tracts of forest, destroy or bury homes, roads, transportation, human lives, infrastructure, and vehicles, significantly impacting human production and the natural environment. Avalanches are a major geological hazard in high-altitude mountainous areas. Due to their high altitude, steep slopes, and sudden onset, avalanches pose significant challenges to their management.

[0005] Generally speaking, the occurrence of avalanche disasters is a progressive process. Part of the avalanche is disturbed by the outside world or melted by rising temperatures. The internal cohesion or friction with the slope surface cannot resist its own weight, causing the snow to become unstable. The unstable part will aggravate the instability of the snow in other parts, thus causing a large-scale avalanche to break out, exacerbating the scale of the disaster.

[0006] To combat avalanche hazards, current measures primarily include installing barrier grilles, energy dissipation pools, and barrier dams within avalanche movement zones, and installing snow-blocking forests and snow-stabilizing steel plates within avalanche event zones. As is well known, snow in mountainous areas is generally concentrated at the tops of steep, high-lying mountains. Once an avalanche strikes, its enormous kinetic energy and volume make it difficult to effectively deploy defenses within movement zones, as well as being costly. Therefore, deploying defenses within avalanche event zones is the most direct and effective approach. However, traditional snow-blocking forests and snow-stabilizing steel plates have significant limitations. For example, snow-blocking forests cannot be planted on mountains with steep peaks and exposed bedrock, and the steep terrain is not well suited to rigid snow-stabilizing plates.

[0007] As mentioned above, the existing avalanche protection system is mainly aimed at the protection of avalanche-occurring areas and movement areas. The main protection measures in the movement area include retaining grilles, energy dissipation pools and retaining dams; the main protection measures in the avalanche-occurring areas include snow-proof forests and snow-stabilizing steel plates. Although protective measures such as retaining grilles and snow-proof forests have been widely used, they are ineffective and costly for large-scale avalanches or avalanches in areas with complex terrain. Taking the retaining grilles in the movement area as an example, after the snow on the top of the mountain becomes unstable and slides to the movement area, it has accumulated a large amount of kinetic energy and has a fluid-like state. It is difficult for the retaining grilles to provide effective protection, especially for large-scale avalanches. As for the avalanche protection methods in the occurrence area, the existing technologies are affected by the terrain and geological conditions and are difficult to be widely used. For example, it is difficult for protective forests to survive in mountains with exposed bedrock, and it is even more difficult for snow-stabilizing steel plates to adapt to areas with steep terrain. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an avalanche prevention and control device that can effectively control snow on steep mountain tops and exposed bedrock areas. The present invention also provides an avalanche prevention and control method using the prevention and control device.

[0009] The technical solution adopted to solve the above technical problems is: a device for preventing and controlling snow avalanches, which includes at least two groups of snow management structures. The snow that needs to be managed is divided into a corresponding number of snow blocks by each group of snow management structures arranged sequentially in the height direction in the avalanche occurrence area to reduce or eliminate the risk of snow avalanche.

[0010] Furthermore, the snow management structure is composed of groups of snow barrier grids arranged sequentially along the height direction within the avalanche occurrence area.

[0011] The preferred embodiment of the above scheme is that the arrangement distance L between two adjacent groups of snow barrier grids is calculated according to the following formula:

[0012] ,

[0013] Wherein, L is the distance between protective devices (m),

[0014] H is the average snow thickness over many years (m),

[0015] β is the slope of the mountain in the avalanche occurrence area (°),

[0016] φ is the friction coefficient between the slope and the snow, generally ranging from 0.5 to 0.7.

[0017] Furthermore, each group of the snow-retaining grid groups includes a mounting base, a retaining grid assembly and a wind-catching reinforcement support assembly. The lower ends of the retaining grid assemblies arranged sequentially along the length direction are arranged on the foundation of the avalanche occurrence area through the mounting base, and the upper ends of the retaining grid assemblies arranged sequentially along the length direction are maintained stable by the wind-catching reinforcement support assembly.

[0018] The preferred embodiment of the above scheme is that the mounting base is a concrete seat sequentially embedded in the foundation of the avalanche occurrence area along the length direction, and the retaining grid components are respectively plugged into the corresponding concrete seats through the lower ends of their steel pile columns.

[0019] Furthermore, the retaining grid assembly also includes multiple groups of steel rope grids, and there are multiple steel pile columns. Each group of steel rope grids is arranged between two adjacent steel pile columns along the length direction, and the wind-absorbing reinforcement support components are sequentially connected to the corresponding steel pile columns.

[0020] A preferred embodiment of the above scheme is that the retaining grid assembly also includes tensioning steel ropes and sutured steel ropes, and the tensioning steel ropes are arranged on two adjacent steel pile columns along the circumferential direction, and the steel rope grid arranged between the two adjacent steel pile columns is circumferentially sewn to the tensioning steel ropes through the sutured steel ropes.

[0021] Furthermore, the wind-catching reinforcement support assembly includes a connecting head, a wind-catching rope and a fixing group. The connecting head is arranged at the upper end of each steel pile column. The fixing group is arranged on the foundation of the avalanche occurrence area above the corresponding steel pile column. The two ends of the wind-catching rope are respectively connected to the connecting head and the fixing group.

[0022] A preferred embodiment of the above scheme is that the fixing component group includes multiple anchor rods whose number is equal to the number of steel pile columns, and each anchor rod is arranged on the foundation of the snow accumulation area above each steel pile column in the length direction to adapt to the position of the corresponding steel pile column.

[0023] A method for controlling avalanches using the aforementioned control device comprises the following steps:

[0024] A. Collect hydrological and meteorological data, and topographic and geological data of the avalanche prevention and control area;

[0025] B. Based on the data of the prevention and control area, obtain the average snow thickness data of the area over the years, and then determine the height of the protective device;

[0026] C. Based on the collected topographic and geological data and the average snow thickness in the area over many years, the spacing between protective devices in the occurrence area is determined according to the above formula;

[0027] D. Determine the number of rows of protective devices in the occurrence area based on the spacing between protective devices and the terrain of the mountain in the occurrence area;

[0028] E. After determining the number of rows, determine the specific location of each row of protective devices in the occurrence area;

[0029] F. After determining the position of each row of protective devices, excavate the foundation of steel pile columns, place the steel pile columns, and pour concrete to fix the steel pile columns;

[0030] G. After the steel pile columns are installed and the concrete has hardened, an anchor rope is installed on each steel pile column. One end of the column is connected to the mountain through a connector, and the other end is connected to the mountain through an anchor head. The anchor rope is tensioned to form support for the column;

[0031] H. Install the tensioning steel rope through the link joint on the column and tension it to make it tight;

[0032] I. Suture the prefabricated steel rope grid and the tension rope by sewing the steel rope to achieve force transmission;

[0033] J. Repeat FI to install the next row of protective devices until the protective devices are completed.

[0034] The beneficial effect of the present invention is that the technical solution provided by the present application forms a new prevention and control device by providing at least two groups of snow management structures, and the snow that needs to be managed is divided into a corresponding number of snow blocks by the groups of snow management structures arranged sequentially in the height direction within the avalanche occurrence area, thereby reducing or eliminating the risk of snow avalanche. In this way, when managing snow in a snow accumulation area, the following steps can be followed:

[0035] A. Collect hydrological and meteorological data, and topographic and geological data of the avalanche prevention and control area;

[0036] B. Based on the data of the prevention and control area, obtain the average snow thickness data of the area over the years, and then determine the height of the protective device;

[0037] C. Based on the collected topographic and geological data and the average snow thickness in the area over many years, the spacing between protective devices in the occurrence area is determined according to the above formula;

[0038] D. Determine the number of rows of protective devices in the occurrence area based on the spacing between protective devices and the terrain of the occurrence area;

[0039] E. After determining the number of rows, determine the specific location of each row of protective devices in the occurrence area;

[0040] F. After determining the position of each row of protective devices, excavate the foundation of steel pile columns, place the steel pile columns, and pour concrete to fix the steel pile columns;

[0041] G. After the steel pile columns are installed and the concrete has hardened, an anchor rope is installed on each steel pile column. One end of the column is connected to the mountain through a connector, and the other end is connected to the mountain through an anchor head. The anchor rope is tensioned to form support for the column;

[0042] H. Install the tensioning steel rope through the link joint on the column and tension it to make it tight;

[0043] I. Suture the prefabricated steel rope grid and the tension rope by sewing the steel rope to achieve force transmission;

[0044] J. Repeat steps FI to install the next row of protective devices until the protective devices are complete. Thus, since the snow management structures of the present application are manually arranged according to design requirements within the avalanche-prone area where snow management is required, and the snow in the accumulation area is separated into snow blocks of specified sizes, this not only solves the technical problem of the prior art in snow management, which is hindered by complex topographical and geological conditions such as steep terrain and exposed bedrock in snow-covered mountainous areas, such as the installation of snowbreaks and / or snow-stabilizing steel plates. Furthermore, since the snow in the accumulation area is separated by the snow management structures into multiple smaller snow blocks with smaller volume and weight, the overall downward force of the snow area is dispersed, reducing the pressure of the snow on the protective devices. Furthermore, even if the divided snow fails, it will avalanche as a portion rather than the entire snow, reducing the scale of the avalanche and the threat of avalanche disasters. Furthermore, the present device is highly adaptable to complex topographical and geological conditions such as steep terrain and exposed bedrock in avalanche-prone areas. Furthermore, after the snow melts, the device can also serve as a protective measure against dangerous rock masses on the slope, reducing the risk of rock collapse. In summary, the technical solution of this application targets the occurrence mechanism and movement process of avalanches, and proposes an avalanche protection method and device in avalanche occurrence areas, which can adapt to complex terrain and geological conditions such as steep terrain and exposed bedrock in snow-covered mountainous areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of the avalanche prevention device of the present invention in a deployed state;

[0046] Figure 2 A schematic diagram of the arrangement of a snow management structure involved in the avalanche prevention and control device of the present invention;

[0047] Figure 3 Figure 2 AA cross-sectional view.

[0048] Marked in the figure are: snow management structure 1, avalanche occurrence area 2, installation base 3, barrier grid assembly 4, wind-catching reinforcement support assembly 5, steel pile column 6, steel rope grid 7, tensioning steel rope 8, suture steel rope 9, connector 10, wind-catching rope 11, fixing component group 12, anchor rod 13. DETAILED DESCRIPTION

[0049] like Figure 1 、 Figure 2 as well as Figure 3 Shown is a device for preventing and controlling avalanches provided by the present invention, which can effectively control snow on steep mountain tops and in areas with exposed bedrock, as well as a method for preventing and controlling avalanches using the device. The device includes at least two groups of snow management structures 1, and the snow that needs to be managed is divided into a corresponding number of snow blocks by the groups of snow management structures 1 sequentially arranged in the avalanche occurrence area 2 along the height direction, thereby reducing or eliminating the risk of snow avalanche. The technical solution provided by the present application constitutes a new prevention and control device by setting at least two groups of snow management structures, and the snow that needs to be managed is divided into a corresponding number of snow blocks by the groups of snow management structures sequentially arranged in the avalanche occurrence area along the height direction, thereby reducing or eliminating the risk of snow avalanche. In this way, when managing snow in a snow accumulation area, the following steps can be followed:

[0050] A. Collect hydrological and meteorological data, and topographic and geological data of the avalanche prevention and control area;

[0051] B. Based on the data of the prevention and control area, obtain the average snow thickness data of the area over the years, and then determine the height of the protective device;

[0052] C. Based on the collected topographic and geological data and the average snow thickness in the area over many years, the spacing between protective devices in the occurrence area is determined according to the above formula;

[0053] D. Determine the number of rows of protective devices in the occurrence area based on the spacing between protective devices and the terrain of the occurrence area;

[0054] E. After determining the number of rows, determine the specific location of each row of protective devices in the occurrence area;

[0055] F. After determining the position of each row of protective devices, excavate the foundation of steel pile columns, place the steel pile columns, and pour concrete to fix the steel pile columns;

[0056] G. After the steel pile columns are installed and the concrete has hardened, an anchor rope is installed on each steel pile column. One end of the column is connected to the mountain through a connector, and the other end is connected to the mountain through an anchor head. The anchor rope is tensioned to form support for the column;

[0057] H. Install the tensioning steel rope through the link joint on the column and tension it to make it tight;

[0058] I. Suture the prefabricated steel rope grid and the tension rope by sewing the steel rope to achieve force transmission;

[0059] J. Repeat steps FI to install the next row of protective devices until the protective devices are complete. Thus, since the snow management structures of the present application are manually arranged according to design requirements within the avalanche-prone area where snow management is required, and the snow in the accumulation area is separated into snow blocks of specified sizes, this not only solves the technical problem of the prior art in snow management, which is hindered by complex topographical and geological conditions such as steep terrain and exposed bedrock in snow-covered mountainous areas, such as the installation of snowbreaks and / or snow-stabilizing steel plates. Furthermore, since the snow in the accumulation area is separated by the snow management structures into multiple smaller snow blocks with smaller volume and weight, the overall downward force of the snow area is dispersed, reducing the pressure of the snow on the protective devices. Furthermore, even if the divided snow fails, it will avalanche as a portion rather than the entire snow, reducing the scale of the avalanche and the threat of avalanche disasters. Furthermore, the present device is highly adaptable to complex topographical and geological conditions such as steep terrain and exposed bedrock in avalanche-prone areas. Furthermore, after the snow melts, the device can also serve as a protective measure against dangerous rock masses on the slope, reducing the risk of rock collapse. In summary, the technical solution of this application targets the occurrence mechanism and movement process of avalanches, and proposes an avalanche protection method and device in avalanche occurrence areas, which can adapt to complex terrain and geological conditions such as steep terrain and exposed bedrock in snow-covered mountainous areas.

[0060] In the above embodiment, considering the specific conditions of the snow accumulation area to be treated, in order to facilitate installation and improve treatment efficiency, the snow treatment structure 1 described in this application is composed of groups of snow barrier grids arranged sequentially along the height direction within the avalanche occurrence area. In this case, the arrangement distance L between two adjacent groups of snow barrier grids is calculated according to the following formula:

[0061] ,

[0062] Wherein, L is the distance between protective devices (m),

[0063] H is the average snow thickness over many years (m),

[0064] β is the slope of the mountain in the avalanche occurrence area (°),

[0065] φ is the friction coefficient between the slope and the snow, generally ranging from 0.5 to 0.7.

[0066] Specifically, each group of the snow-blocking grid groups includes a mounting base 3, a blocking grid assembly 4, and a wind-catching reinforcement support assembly 5. The lower ends of the blocking grid assemblies 4, which are arranged sequentially along the length direction, are arranged on the foundation of the avalanche-generating area 2 via the mounting base 3, and the upper ends of the blocking grid assemblies 4, which are arranged sequentially along the length direction, are maintained stable by the wind-catching reinforcement support assembly 5. At this time, the mounting base is preferably a concrete seat embedded sequentially in the foundation of the avalanche-generating area along the length direction, and the blocking grid assemblies 4 are plugged into the corresponding concrete seats one by one through the lower ends of their steel pile columns 6. According to the implementation requirements, the blocking grid assembly 4 described in the present application also includes multiple groups of steel rope grids 7, and there are multiple steel pile columns 6. The steel rope grids 7 of each group are arranged respectively between two adjacent steel pile columns 6 along the length direction, and the wind-catching reinforcement support assemblies are connected to the corresponding steel pile columns 6 in sequence. As described above, to facilitate installation, the retaining grid assembly 4 described in the present application further includes tensioning steel ropes 8 and sewing steel ropes 9. The tensioning steel ropes 8 are circumferentially arranged on two adjacent steel pile columns 6, and the steel rope grid 7 arranged between the two adjacent steel pile columns 6 is circumferentially sewn to the tensioning steel ropes 8 via the sewing steel ropes 9. Accordingly, the wind-catching reinforcement support assembly 5 described in the present application includes a connector 10, a wind rope 11, and a fixing assembly 12. The connector 10 is arranged on the upper end of each steel pile column 6, and the fixing assembly 12 is arranged on the foundation of the avalanche generating area 2 above the corresponding steel pile column 6. The two ends of the wind rope 11 are respectively connected to the connector 10 and the fixing assembly 12. The fixing assembly 12 includes a plurality of anchor rods 13 whose number is equal to the number of steel pile columns 6 . Each anchor rod 13 is arranged on the foundation of the avalanche occurrence area 2 above each steel pile column 6 in a length direction corresponding to the position of the corresponding steel pile column 6 .

[0067] In summary, the technical solution provided by this application also has the following advantages:

[0068] 1. The snow in the avalanche area is divided by setting up multiple rows, which can disperse the sliding force of the snow and increase the anti-sliding resistance, and reduce the scale of avalanches;

[0069] 2. It is connected to the mountain through pillars and can adapt to complex terrain and geological conditions;

[0070] 3. The steel rope grid in the device can be prefabricated, with strong adaptability and high installation efficiency;

[0071] 4. After the snow melts, this device can also be used as a protective measure for dangerous rock masses.

[0072] The characteristics of the device of this application are:

[0073] 1. Adaptable to different mountain terrains and geological conditions;

[0074] 2. Dividing the snow in the avalanche area can effectively reduce the scale of the avalanche;

[0075] 3. After the snow melts, this device can be used as a protective measure for dangerous rock masses and reduce disaster prevention and control costs.

[0076] Example 1

[0077] This patent application aims to utilize protective devices suitable for complex terrain and geological conditions. These devices, arranged in multiple rows, divide the snow in an avalanche zone. This, on the one hand, disperses the downward force of the snow and increases resistance to sliding, reducing the risk of avalanches. On the other hand, the scale of avalanche disasters caused by the cut snow is also reduced, minimizing disturbances and reducing the risk of larger avalanches. The method and device described in this patent for avalanche prevention and control method include: multiple rows of protective devices are arranged in an avalanche zone. Each row of protective devices utilizes a steel cable grid to divide the snow in the zone into multiple sections, which withstand the downward force of the snow. The force is then transmitted to steel piles via connecting ropes, tensioning cables, and the cable grid. The force is then transmitted to the mountain via anchor cables and a concrete base, achieving the goal of preventing and controlling avalanches. Furthermore, once a local avalanche occurs, the divided snow is arranged to disturb the entire zone, effectively reducing the scale of the avalanche.

[0078] The specific implementation steps of the method and device for avalanche prevention in this patent are as follows:

[0079] A. Collect hydrological and meteorological data, and topographic and geological data of the avalanche prevention and control area;

[0080] B. Based on the data of the prevention and control area, obtain the average snow thickness data of the area over the years, and then determine the height of the protective device;

[0081] C. Based on the collected topographic and geological data and the average snow thickness in the region over the years, the spacing between protective devices in the occurrence area is determined according to the following formula:

[0082] ,

[0083] Where: L-protection device spacing (m)

[0084] H-average snow thickness over many years (m)

[0085] β-Slope of the mountain in the avalanche-generating area (°)

[0086] φ - friction coefficient between the slope and the snow, generally 0.5 to 0.7;

[0087] D. Determine the number of rows of protective devices in the occurrence area based on the spacing between protective devices and the terrain of the occurrence area;

[0088] E. After determining the number of rows, determine the specific location of each row of protective devices in the occurrence area;

[0089] F. After determining the position of each row of protective devices, excavate the foundation of steel pile columns, place the steel pile columns, and pour concrete to fix the steel pile columns;

[0090] G. After the steel pile columns are installed and the concrete has hardened, an anchor rope is installed on each steel pile column. One end of the column is connected to the mountain through a connector, and the other end is connected to the mountain through an anchor head. The anchor rope is tensioned to form support for the column;

[0091] H. Install the tensioning steel rope through the link joint on the column and tension it to make it tight;

[0092] I. Force transmission can be achieved by sewing the prefabricated steel rope grid (available as a ready-made product (such as D0 / 08 / 150 type) or prefabricated on site) and the tension rope together through sewing the steel rope;

[0093] J. Repeat FI to install the next row of protective devices until the protective devices are completed.

Claims

1. A device for preventing and controlling avalanches, characterized in that: The prevention and control device comprises at least two groups of snow management structures (1), and the snow to be managed is divided into a corresponding number of snow blocks by the groups of snow management structures (1) arranged sequentially in the avalanche occurrence area (2) along the height direction to reduce or eliminate the risk of snow avalanche. The snow management structure (1) is a group of snow blocking grids arranged in sequence along the height direction in the avalanche occurrence area. The layout distance L between two adjacent groups of snow barrier grids is calculated according to the following formula: ， Wherein, L is the distance between protective devices (m), H is the average snow thickness over many years (m), β is the slope of the mountain in the avalanche occurrence area (°), φ is the friction coefficient between the slope and the snow, which is generally 0.5 to 0.

7. Each group of the snow blocking grid groups comprises a mounting base (3), a blocking grid assembly (4) and a wind-absorbing reinforcement support assembly (5); the lower ends of the blocking grid assemblies (4) arranged sequentially along the length direction are arranged on the foundation of the avalanche occurrence area (2) through the mounting base (3); the upper ends of the blocking grid assemblies (4) arranged sequentially along the length direction are kept stable by the wind-absorbing reinforcement support assembly (5); The mounting base (3) is a concrete base sequentially embedded in the foundation of the avalanche occurrence area along the longitudinal direction, and the blocking grid components (4) are respectively plugged into the corresponding concrete bases through the lower ends of the steel pile columns (6). The retaining grid assembly (4) further comprises a plurality of groups of steel rope grids (7), the steel pile columns (6) are a plurality of, and each group of the steel rope grids (7) is respectively arranged between two adjacent steel pile columns (6) along the length direction, and the wind-absorbing reinforcement support assembly (5) is respectively connected to the corresponding steel pile columns (6) in sequence. The retaining grid assembly (4) further comprises a tensioning steel rope (8) and a sewing steel rope (9), wherein the tensioning steel rope (8) is arranged on two adjacent steel pile columns (6) along the circumferential direction, and the steel rope grid (7) arranged between the two adjacent steel pile columns (6) is sewn to the tensioning steel rope (8) along the circumferential direction via the sewing steel rope (9). The wind-catching reinforcement support assembly (5) comprises a connector (10), a wind rope (11) and a fixing assembly (12). The connector (10) is arranged at the upper end of each steel pile column (6). The fixing assembly (12) is arranged on the foundation of the avalanche occurrence area (2) above the corresponding steel pile column (6). The two ends of the wind rope (11) are respectively connected to the connector (10) and the fixing assembly (12). The fixing member group (12) includes a plurality of anchor rods (13) whose number is equal to the number of steel pile columns (6), and each anchor rod (13) is arranged on the foundation of the avalanche occurrence area (2) above each steel pile column (6) in a length direction corresponding to the position of the corresponding steel pile column (6).

2. A method for controlling avalanches using the device according to claim 1, characterized in that: The control method comprises the following steps: A. Collect hydrological and meteorological data, and topographic and geological data of the avalanche prevention and control area; B. Based on the data of the prevention and control area, obtain the average snow thickness data of the area over the years, and then determine the height of the protective device; C. Based on the collected topographic and geological data and the average snow thickness in the area over many years, the spacing between protective devices in the occurrence area is determined according to the above formula; D. Determine the number of rows of protective devices in the occurrence area based on the spacing between protective devices and the terrain of the occurrence area; E. After determining the number of rows, determine the specific location of each row of protective devices in the occurrence area; F. After determining the position of each row of protective devices, excavate the foundation of steel pile columns, place the steel pile columns, and pour concrete to fix the steel pile columns; G. After the steel pile columns are installed and the concrete has hardened, an anchor rope is installed on each steel pile column. One end of the column is connected to the mountain through a connector, and the other end is connected to the mountain through an anchor head. The anchor rope is tensioned to form support for the column; H. Install the tensioning steel rope through the link joint on the column and tension it to make it tight; I. Suture the prefabricated steel rope grid and the tension rope by sewing the steel rope to achieve force transmission; J. Repeat FI to install the next row of protective devices until the protective devices are completed.

Images