Passive prevention and control structure for avalanche and air blast disaster

Abstract

The utility model discloses a passive prevention and cure structure of avalanche and air wave disaster, include: at least two vertical burying ground's stand, at least three horizontal bars are fixedly arranged on two stand, three horizontal bars are located the top of stand, the bottom of above -mentioned two between ground portion and above -mentioned two, the part that stand and horizontal bar enclose is provided with the open -hole steel sheet in the front, is provided with the support rod at the back, and the support rod one end fixedly connected in stand, the other end is connected on the ground, the utility model discloses can resist avalanche impact force also can effectively reduce the air wave pressure that avalanche produces, is applicable to the comprehensive prevention and cure of avalanche and its air wave.

Description

Technical Field

[0001] This utility model relates to the field of avalanche and blast disaster prevention technology, specifically to a passive prevention structure for avalanche and blast disasters. Background Technology

[0002] An avalanche is the collapse of snow-covered slopes under the influence of gravity. Its hazards primarily involve the avalanche itself and the impact and damage caused by snow clouds and air currents. Avalanches are characterized by their potential for suddenness, unpredictability, and immense destructive power. With global warming and accelerated snowmelt, avalanche disasters are becoming increasingly frequent in my country's high-altitude and cold mountainous areas. Coupled with increasingly active human activities in these zones, the casualties and economic losses caused by avalanches are increasing year by year, severely hindering sustainable socio-economic development. Therefore, effective prevention and control of avalanche disasters is crucial for ensuring the safety and development of high-altitude and cold mountainous areas.

[0003] On the one hand, due to the low temperatures, avalanches often occur in sparsely populated high-altitude areas, making the transportation of equipment and materials difficult and increasing the difficulty of on-site construction. Taking passive protection measures at the toe of the slope can significantly reduce the difficulty of construction and thus reduce construction risks. On the other hand, the huge impact energy generated by high-altitude avalanches places high demands on the strength and stability of the protective structure. To meet the structural stability requirements, the design size of the structure needs to be increased, resulting in high project investment and resource consumption. The implementation of large structures is also not in harmony with the surrounding environment. In addition, unlike landslides, avalanches, in addition to their own impact force, also have the impact of the accompanying snow cloud and air waves. How to effectively prevent and control these also places high demands on the structural design. Utility Model Content

[0004] The purpose of this invention is to propose a passive prevention and control structure for avalanche and blast wave disasters in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a passive prevention structure for avalanche and blast wave disasters, comprising: two vertical columns buried in the ground, and three horizontal bars fixedly installed on the two columns. The three horizontal bars are respectively located at the top of the columns, the bottom of the portion above the ground, and between the two. The front of the portion enclosed by the columns and the horizontal bars is provided with a perforated steel plate, and the back is provided with a support rod. One end of the support rod is fixedly connected to the column, and the other end is connected to the ground.

[0007] As a preferred technical solution, the column includes a cantilever section steel pipe, a fixed section steel pipe, and an inner insert pipe. The fixed section steel pipe is located below the ground, and the cantilever section steel pipe is located above the ground. The ends of the cantilever section steel pipe and the fixed section steel pipe are joined together. The inner insert pipe is disposed inside the cantilever section steel pipe and the fixed section steel pipe, and the ends of the cantilever section steel pipe and the fixed section steel pipe are fixedly connected to the inner insert pipe.

[0008] As a preferred technical solution, the cantilever section steel pipe and the embedded section steel pipe have the same diameter and wall thickness, and both have a diameter of not less than 100mm and a wall thickness of not less than 12mm. The outer wall of the inner insertion pipe abuts against the inner wall of the cantilever section steel pipe and the embedded section steel pipe, and the wall thickness of the inner insertion pipe is not less than 6mm. The diameter of the crossbar is not less than 100mm and the wall thickness is not less than 5mm.

[0009] As a preferred technical solution, the length of the embedded steel pipe section is at least 1 / 2 of the total length of the column.

[0010] As a preferred technical solution, the perforated steel plate is made of Q235 steel, and the snow-facing side is wavy.

[0011] As a preferred technical solution, the distance between the connection point of the support rod and the column and the top of the column is 1 / 4 to 1 / 3 of the total length of the cantilever section steel pipe, and the diameter of the support rod is not less than 100mm and the wall thickness is not less than 6mm.

[0012] As a preferred technical solution, a fixing hole is provided on the ground, the fixing section steel pipe is placed in the fixing hole, and the fixing hole is filled with M30 mortar.

[0013] As a preferred technical solution, a plurality of grouting holes are provided on the portion where the embedded steel pipe and the inner tube are connected, penetrating the sidewalls of the embedded steel pipe and the inner tube.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] The passive prevention structure for avalanche and blast wave disasters provided by this utility model can resist the impact force of avalanches and effectively reduce the pressure of blast waves generated by avalanches. It is suitable for the comprehensive prevention and control of avalanches and their blast waves. The structure can be placed at the bottom of the hillside to complete the prevention and control of avalanches and their blast waves, effectively avoiding high-altitude construction, reducing construction difficulty and risks. The protective project is mainly a steel structure, and each member can be prefabricated in advance. The construction process is simple and easy to operate. In addition, the protective project occupies a small area, which can reduce the damage to the surrounding landscape and vegetation, thereby achieving an ecological prevention and control effect. Attached Figure Description

[0016] Figure 1 The front view of this utility model is shown.

[0017] Figure 2 A side view of the present invention is shown.

[0018] Figure 3 The structural diagram of the column of this utility model is shown.

[0019] Figure 4 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0020] Legend:

[0021] 1. Column; 101. Cantilever section steel pipe; 102. Embedded section steel pipe; 103. Inner tube; 2. Crossbar; 3. Perforated steel plate; 4. Support rod; 5. Embedded hole; 6. M30 mortar; 7. Grouting hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] like Figure 1-4 As shown in the figure, this embodiment discloses a passive prevention structure for avalanche and blast wave disasters, including: two vertical columns 1 buried in the ground, and three horizontal bars 2 fixedly installed on the two columns 1. The three horizontal bars 2 are respectively located at the top of the columns 1, the bottom of the part above the ground, and between the two. The front of the part enclosed by the columns 1 and the horizontal bars 2 is provided with a perforated steel plate 3, and the back is provided with a support rod 4. One end of the support rod 4 is fixedly connected to the column 1, and the other end is connected to the ground.

[0025] The working principle and usage process of this embodiment are as follows:

[0026] Two uprights 1 and three crossbars 2 together form a relatively stable frame structure. The perforated steel plates 3 on the front of the frame structure can block avalanches and air blasts. The perforated steel plates 3 are connected to the uprights 1 by U-shaped buckles and to the crossbars 2 by clamps. The perforated steel plates 3 are bolted together. The use of perforated steel plates 3 can weaken the impact of avalanches and air blasts to a certain extent, and can also allow some snow and air blasts to pass through through the openings, thus playing a buffering role. This can avoid excessive pressure concentration on the structure due to complete blockage and reduce the risk of structural damage. The support rods 4 on the back of the structure can enhance the stability of the entire structure. The support rods 4 are connected to the ground by ground anchors. The support rods are cast into the ground, making the structure less prone to tilting, and at the same time transferring some of the force to the ground, dispersing the force borne by the structure.

[0027] Example 2

[0028] like Figure 1-4 As shown, this embodiment is based on embodiment one. Specifically, the column 1 includes a cantilever section steel pipe 101, a fixed section steel pipe 102, and an inner tube 103. The fixed section steel pipe 102 is located below the ground, and the cantilever section steel pipe 101 is located above the ground. The ends of the cantilever section steel pipe 101 and the fixed section steel pipe 102 are joined together. The inner tube 103 is disposed inside the cantilever section steel pipe 101 and the fixed section steel pipe 102, and the ends of the cantilever section steel pipe 101 and the fixed section steel pipe 102 are fixedly connected to the inner tube 103.

[0029] The column 1 adopts a segmented structure. First, the embedded end steel pipe is buried below ground level. Then, the inner insertion pipe 103 is inserted into the embedded end steel pipe, and the two are welded together. Next, the cantilever section steel pipe 101 is joined to the embedded section steel pipe 102, and then the cantilever section steel pipe 101 is welded to the inner insertion pipe 103 to complete the construction. This structure makes the installation of each component more convenient, and the construction process does not require complex connection processes and equipment. Both steel pipe sections and the inner insertion pipe 103 are produced using standardized methods, which can improve construction efficiency and shorten the construction cycle.

[0030] Furthermore, the cantilever section steel pipe 101 and the embedded section steel pipe 102 have the same diameter and wall thickness, and both have a diameter of not less than 100 mm and a wall thickness of not less than 12 mm. The outer wall of the inner insertion pipe 103 abuts against the inner wall of the cantilever section steel pipe 101 and the embedded section steel pipe 102, and the wall thickness of the inner insertion pipe 103 is not less than 6 mm. The diameter of the crossbar 2 is not less than 100 mm and the wall thickness is not less than 5 mm.

[0031] Furthermore, the length of the embedded steel pipe 102 is at least half the total length of the column 1, thus ensuring the stability of the column 1.

[0032] Example 3

[0033] like Figure 1-4 As shown, this embodiment is based on Embodiment 1. Specifically, the material of the perforated steel plate 3 is Q235, and the snow-facing surface is wavy. Q235 steel has good toughness and can withstand the impact load of avalanches, while also performing well in low-temperature environments. The wavy design of the snow-facing surface of the perforated steel plate 3 increases the resistance to airflow, significantly reducing the kinetic energy of the air wave. At the same time, the wavy shape reduces stress concentration, lowering the risk of deformation or damage to the perforated steel plate 3.

[0034] Example 4

[0035] like Figure 1-4 As shown, this embodiment is based on Embodiment 1. Specifically, the distance between the connection point of the support rod 4 and the column 1 and the top of the column 1 is 1 / 4 to 1 / 3 of the total length of the cantilever section steel pipe 101. The diameter of the support rod 4 is not less than 100mm, and the wall thickness is not less than 6mm. The actual wall thickness of the support rod 4 is determined based on the impact force of the avalanche; the greater the impact force, the greater the wall thickness. The connection point of the support rod 4 and the column 1 must be located high up to provide stable support for the column 1.

[0036] Example 5

[0037] like Figure 1-4 As shown, this embodiment is based on embodiment one. Specifically, a fixing hole 5 is provided on the ground, and the fixing section steel pipe 102 is set in the fixing hole 5. The fixing hole 5 is filled with M30 mortar 6.

[0038] Furthermore, several grouting holes 7 are provided on the part where the embedded section steel pipe 102 and the inner insertion pipe 103 are connected, penetrating the side walls of the embedded section steel pipe 102 and the inner insertion pipe 103.

[0039] In this embodiment, the embedment hole 5 is formed by air down-the-hole hammer impact drilling or waterless dry rotary drilling. After drilling to the design elevation, the hole is cleaned, and then the embedment section steel pipe 102 is buried. M30 mortar 6 is poured into the embedment hole 5. The M30 mortar 6 enters the interior of the embedment section steel pipe 102 through the grouting hole 7, so that the embedment section steel pipe 102 and the foundation form an integral whole.

[0040] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A passive prevention structure for avalanche and blast wave disasters, characterized in that, include: At least two vertical columns (1) are buried in the ground, and at least three horizontal bars (2) are fixedly installed on the two columns (1). The horizontal bars (2) are located at the top of the column (1), the bottom of the part above the ground, and between the two. The part enclosed by the column (1) and the horizontal bars (2) is provided with a perforated steel plate (3) on the front and a support rod (4) on the back. One end of the support rod (4) is fixedly connected to the column (1), and the other end is connected to the ground.

2. The passive prevention structure for avalanche and blast wave disasters according to claim 1, characterized in that: The column (1) includes a cantilever section steel pipe (101), a fixed section steel pipe (102), and an inner tube (103). The fixed section steel pipe (102) is located below the ground, and the cantilever section steel pipe (101) is located above the ground. The ends of the cantilever section steel pipe (101) and the fixed section steel pipe (102) are joined together. The inner tube (103) is disposed inside the cantilever section steel pipe (101) and the fixed section steel pipe (102), and the ends of the cantilever section steel pipe (101) and the fixed section steel pipe (102) are fixedly connected to the inner tube (103).

3. The passive prevention structure for avalanche and blast wave disasters according to claim 2, characterized in that: The cantilever section steel pipe (101) and the embedded section steel pipe (102) have the same diameter and wall thickness, and both have a diameter of not less than 100 mm and a wall thickness of not less than 12 mm. The outer wall of the inner insertion tube (103) abuts against the inner wall of the cantilever section steel pipe (101) and the embedded section steel pipe (102), and the wall thickness of the inner insertion tube (103) is not less than 6 mm. The diameter of the crossbar (2) is not less than 100 mm and the wall thickness is not less than 5 mm.

4. The passive prevention structure for avalanche and blast wave disasters according to claim 3, characterized in that: The length of the embedded section steel pipe (102) is at least 1 / 2 of the total length of the column (1).

5. The passive prevention structure for avalanche and blast wave disasters according to claim 1, characterized in that: The perforated steel plate (3) has a wavy surface facing the snow.

6. The passive prevention structure for avalanche and blast wave disasters according to claim 2, characterized in that: The distance between the connection point of the support rod (4) and the column (1) and the top of the column (1) is 1 / 4 to 1 / 3 of the total length of the cantilever section steel pipe (101). The diameter of the support rod (4) is not less than 100 mm and the wall thickness is not less than 6 mm.

7. The passive prevention structure for avalanche and blast wave disasters according to claim 2, characterized in that: An embedding hole (5) is provided on the ground, and the embedding section steel pipe (102) is placed in the embedding hole (5). The embedding hole (5) is filled with M30 mortar (6).

8. The passive prevention structure for avalanche and blast wave disasters according to claim 7, characterized in that: The portion where the embedded section steel pipe (102) and the inner insertion pipe (103) are connected is provided with a plurality of grouting holes (7) that penetrate the side walls of the embedded section steel pipe (102) and the inner insertion pipe (103).

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