Debris flow protection construction device and construction method

Abstract

The invention relates to the technical field of debris flow safety protection, and discloses a debris flow protection construction device and method.The debris flow protection construction device comprises a retaining wall and a flexible intercepting structure, the flexible intercepting structure is arranged in front of the retaining wall and comprises a reservoir, a support, a flexible armor, an underwater energy dissipation piece and a steel strand A. The reservoir is excavated in front of the retaining wall, and the support is arranged in front of the retaining wall. The support is fixed to the retaining wall, the flexible armor is tightened on the support through the steel strand A, and the underwater energy dissipation piece is installed on the inner side wall of the reservoir and connected with the flexible armor through the steel strand A. The device has the beneficial effects that through the combined action of two-stage protection of the flexible interception structure and the retaining wall, the energy level of 7000 KJ can be borne, energy consumption is conducted through the flexible interception structure firstly, then stopping is conducted through the retaining wall, permanent damage to the device is avoided, and emergency disaster prevention toughness is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of debris flow safety protection, in particular to a debris flow protection construction device and a construction method. Background Art

[0002] Valley slope debris flow refers to a special torrent of solid materials such as mud, sand, and boulders that is generated by precipitation (rainstorms, glaciers, and snowmelt) in mountainous areas or other areas with deep valleys and steep terrain. It is characterized by suddenness, fast flow rate, large flow rate, large material capacity, and strong destructive power. In addition, there are a large number of high-level and high-risk rock masses developed on the steep slopes above some debris flow gullies. Once collapse and rockfall occur, they will slide or roll down quickly along the valley or slope, with large impact energy and unpredictable bounce height, which is bound to pose a threat to the safe operation of road projects such as highways and railways or human settlements.

[0003] The Chinese invention patent (invention publication number: CN115853014A name: A debris flow protection retaining wall) includes a wall body, a plurality of slots are opened on the wall body, a swivel is rotatably connected in the slots, a plurality of cleaning rods that rotate in the slots are circumferentially arranged on the swivel, the cleaning rods rotate along the inner walls of the slots, a driving rod is rotatably connected in the wall body, a connecting assembly connected to the plurality of swivels is provided on the driving rod, the connecting assembly is used to drive the swivel to rotate after the driving rod rotates, and couplings are connected to both ends of the driving rod passing through the wall body. The present application sets a swivel and a cleaning rod, and the driving rod drives the swivel and the cleaning rod to rotate in the slot to stir up the blocked mud and sand, so that the loosened mud and sand can be flushed out of the slot under the impact of the debris flow on one side of the wall. There is no need for manual cleaning or excavator cleaning, which saves manpower and material resources. It has the advantage of being easy to clean the mud and sand in the protective retaining wall. However, a large number of experimental studies have shown that the maximum energy level of this type of protective structure can only reach 5000KJ, and its ability to protect against high-position and high-energy collapse and rockfall is limited. It is very easy to break and fail in mountainous canyon areas. Summary of the invention

[0004] The purpose of the present invention is to provide a debris flow protection construction device and a construction method to overcome the shortcomings of the prior art.

[0005] The objective of the present invention is achieved through the following technical solutions: a debris flow protection construction device and a construction method, comprising a retaining wall and a flexible interception structure, wherein the flexible interception structure is arranged in front of the retaining wall, and the flexible interception structure comprises a water reservoir, a bracket, a flexible armor, an underwater energy absorbing part and an A steel strand, wherein the water reservoir is excavated in front of the retaining wall, the bracket is fixed on the retaining wall, the flexible armor is stretched on the bracket by the A steel strand, and the underwater energy absorbing part is installed on the inner wall of the water reservoir and connected to the flexible armor by the A steel strand.

[0006] Preferably, the underwater energy-absorbing component includes a connecting column, a transmission cylinder with a variable cross-section, a B steel strand and a damping blade. The connecting column is fixed to the inner wall of the water reservoir by two anchor rods, and the two anchor rods are respectively located at the two ends of the connecting column. The transmission cylinder is sleeved on the connecting column and can rotate with each other. Three ear plates are fixed on the transmission cylinder along its axial direction. The two ends of the B steel strand are respectively connected to the ear plates at the two ends of the transmission cylinder, and the middle part of the B steel strand is connected to the A steel strand. A starting ring is installed on the B steel strand, and the B steel strand is fixed to the ear plate in the middle of the transmission cylinder by the starting ring. The damping blade is fixed on the transmission cylinder and rotates in a circle with the transmission cylinder.

[0007] Preferably, the flexible armor comprises a plurality of honeycomb sandwich panels hinged to each other, the honeycomb sandwich panels are distributed in an array, and ears are provided on two opposite edges of the honeycomb sandwich panels, the A steel strand passes through the corresponding ears, and a fastening rope is provided in the honeycomb sandwich panels along the vertical direction, and both ends of the fastening rope are respectively fixed to the corresponding A steel strand.

[0008] Preferably, it also includes a drainage ditch, which is located behind the retaining wall. The retaining wall is provided with a flood discharge hole, and a baffle is hinged on the flood discharge hole. The baffle is located above the drainage ditch, and the debris flow in the flood discharge hole enters the drainage ditch through the baffle.

[0009] Preferably, there are six damping blades, and the damping blades are divided into two groups. The two groups of damping blades are respectively arranged at both ends of the transmission cylinder, each group of damping blades is evenly distributed around the circumference of the transmission cylinder, and the ear plate is located between the two groups of damping blades.

[0010] Preferably, reinforcing ribs are provided on the retaining wall, the reinforcing ribs span the drainage groove, there are a plurality of reinforcing ribs which are evenly distributed along the drainage groove, and baffle rods are fixed between adjacent reinforcing ribs, through which the rotation angle of the baffle is not greater than 30 degrees.

[0011] A construction method of a debris flow protection construction device comprises the following steps: S1: Measure the shape and area of ​​the protected structure; S2: Determine the shape, size and quantity of the above-mentioned protective construction devices according to the measurement results of S1; S3: Construct a concrete pile retaining wall next to the reservoir, dig a drainage ditch behind the retaining wall, and cast it to form a debris flow diversion channel after hardening.

[0012] The present invention has the following advantages: 1. Through the combined effect of the flexible interception structure and the retaining wall, it can withstand an energy level of 7000 KJ. The energy is first consumed through the flexible interception structure and then intercepted by the retaining wall, avoiding permanent damage to the device and enhancing emergency disaster prevention resilience.

[0013] 2. The underwater energy-absorbing parts can be recycled and easily restored, and have the working characteristics of adapting to the internal force of the impact, solving the problems of rigid connection of steel strands that cannot be recycled and fixed working tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 It is a schematic diagram of the structure of underwater energy-consuming parts; Figure 4 It is a schematic diagram of the structure of the flexible armor; In the figure, 1-retaining wall, 2-water reservoir, 3-bracket, 4-flexible armor, 5-underwater energy absorbing parts, 6-A steel strand, 7-connecting column, 8-transmission cylinder, 9-B steel strand, 10-damping blade, 11-anchor rod, 12-ear plate, 13-starting ring, 14-honeycomb sandwich plate, 15-lifting ear, 16-fastening rope, 17-drainage ditch, 18-flood discharge hole, 19-baffle, 20-reinforcement rib, 21-baffle rod. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 and 2 As shown, a debris flow protection construction device includes a retaining wall 1 and a flexible intercepting structure. The flexible intercepting structure is arranged in front of the retaining wall 1. The flexible intercepting structure includes a water reservoir 2, a bracket 3, a flexible armor 4, an underwater energy absorbing component 5 and an A steel strand 6. The water reservoir 2 is excavated in front of the retaining wall 1. The bracket 3 is fixed on the retaining wall 1. The flexible armor 4 is tightly stretched on the bracket 3 through the A steel strand 6. The underwater energy absorbing component 5 is installed on the inner wall of the water reservoir 2 and connected to the flexible armor 4 through the A steel strand 6. Through the combined effect of the two-level protection of the flexible intercepting structure and the retaining wall 1, it can withstand an energy level of 7000 KJ. It first consumes energy through the flexible intercepting structure and then is intercepted by the retaining wall 1, thereby avoiding permanent damage to the device and enhancing emergency disaster prevention resilience.

[0022] In this embodiment, if Figure 1 and 3As shown, the underwater energy dissipation member 5 includes a connecting column 7, a transmission cylinder 8 with a variable cross-section (shaped like a rugby ball), a B steel strand 9 and a damping blade 10. The connecting column 7 is fixed to the inner wall of the reservoir 2 by two anchor rods 11. The two anchor rods 11 are respectively located at the two ends of the connecting column 7. The transmission cylinder 8 is sleeved on the connecting column 7 and can rotate with each other. Three ear plates 12 are fixed on the transmission cylinder 8 along its axial center line direction. The two ends of the B steel strand 9 are respectively connected to the ear plates 12 at the two ends of the transmission cylinder 8. The middle part of the B steel strand 9 The A steel strand 6 is connected to the B steel strand 9, and a starting ring 13 is installed on the B steel strand 9. The B steel strand 9 is fixed to the ear plate 12 in the middle of the transmission cylinder 8 through the starting ring 13. The damping blade 10 is fixed on the transmission cylinder 8 and rotates in a circle with the transmission cylinder 8. The damping blade 10 is six pieces, and the damping blade 10 is divided into two groups. The two groups of damping blades 10 are respectively arranged at both ends of the transmission cylinder 8. Each group of damping blades 10 is evenly distributed around the circumference of the transmission cylinder 8. The ear plate 12 is located between the two groups of damping blades 10. The starting ring 1 3 is used to maintain the initial equilibrium state and prevent the underwater energy-consuming part 5 from starting too early. Once the flexible armor 4 is hit, the starting ring 13 is broken by the tension F, and the energy-consuming part starts to work. The variable-section transmission cylinder 8 and the transmission wire rope form a transmission system. Due to the variable-section winding method, the initial working force arm is large, which can alleviate the instantaneous working tension peak of the collision and reduce the impact force. Since the speed of the falling rocks decreases in the later stage of the collision, the kinetic energy is reduced, but the olive shape reduces the later working force arm, so the damping blade 10 can still maintain a high speed, ensuring the stability of the energy consumption efficiency in the whole process. After the collision, the recovery of the underwater energy-consuming part 5 requires winding a small-sized wire rope around the middle ear plate 12, and the rope is pulled by a simple method such as winch traction to achieve the purpose of reversing the variable-section transmission cylinder 8, so that the B wire rope is rewound on the variable-section transmission cylinder 8, so that the underwater energy-consuming part 5 can be recycled without consumables, and has the working characteristics of self-adapting with the impact internal force, solving the problem that the rigid connection of the steel strand cannot be recycled and the working tension is fixed.

[0023] In this embodiment, if Figure 4 As shown, the flexible armor 4 includes a plurality of honeycomb sandwich panels 14 hinged to each other, the honeycomb sandwich panels 14 are distributed in an array, and ears 15 are provided on two opposite edges of the honeycomb sandwich panels 14. The A steel strand 6 passes through the corresponding ears 15. A fastening rope 16 is provided in the honeycomb sandwich panel 14 along the vertical direction, and both ends of the fastening rope 16 are respectively fixed to the corresponding A steel strand 6. When the flexible armor 4 is damaged, it is only necessary to replace the damaged honeycomb sandwich panel 14 alone without replacing the entire panel, thereby reducing maintenance costs.

[0024] In this embodiment, if Figure 1 and 2As shown, it also includes a drainage ditch 17, which is located at the rear of the retaining wall 1. A flood discharge hole 18 is opened on the retaining wall 1, and a baffle 19 is hinged on the flood discharge hole 18. The baffle 19 is located above the drainage ditch 17. The debris flow in the flood discharge hole 18 enters the drainage ditch 17 through the baffle 19. Reinforcement ribs 20 are provided on the retaining wall 1. The reinforcement ribs 20 span the drainage ditch 17. There are a plurality of reinforcement ribs 20 and they are evenly distributed along the drainage ditch 17. Baffle rods 21 are fixed between adjacent reinforcement ribs 20. The baffle rods 21 make the rotation angle of the baffle 19 not greater than 30 degrees, so as to guide the sewage in the debris flow to avoid entering the road engineering operation safety or human residence to pollute the water source and cause plague.

[0025] A construction method of a debris flow protection construction device comprises the following steps: S1: Measure the shape and area of ​​the protected structure; S2: Determine the shape, size and quantity of the above-mentioned protective construction devices according to the measurement results of S1; S3: Concrete pile retaining wall 1 is constructed beside the reservoir 2, and a drainage ditch 17 is excavated behind the retaining wall 1, which is poured and hardened to form a debris flow diversion channel.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A debris flow protection construction device, comprising a retaining wall (1) and a flexible interception structure, wherein the flexible interception structure is arranged in front of the retaining wall (1), and is characterized in that: The flexible interception structure comprises a water reservoir (2), a bracket (3), a flexible armor (4), an underwater energy-absorbing component (5) and an A steel strand (6); the water reservoir (2) is excavated in front of the retaining wall (1); the bracket (3) is fixed on the retaining wall (1); the flexible armor (4) is stretched on the bracket (3) via the A steel strand (6); the underwater energy-absorbing component (5) is installed on the inner wall of the water reservoir (2) and is connected to the flexible armor (4) via the A steel strand (6).

2. A debris flow protection construction device according to claim 1, characterized in that: The underwater energy-absorbing component (5) comprises a connecting column (7), a transmission cylinder (8) with a variable cross-section, a B steel strand (9) and a damping blade (10). The connecting column (7) is fixed to the inner wall of the water reservoir (2) via two anchor rods (11). The two anchor rods (11) are respectively located at two ends of the connecting column (7). The transmission cylinder (8) is sleeved on the connecting column (7) and can rotate relative to each other. Three ear plates (12) are fixedly provided on the transmission cylinder (8) along the axis direction thereof. The two ends of the B steel strand (9) are respectively connected to the ear plates (12) at the two ends of the transmission cylinder (8), and the middle part of the B steel strand (9) is connected to the A steel strand (6). A starting ring (13) is installed on the B steel strand (9), and the B steel strand (9) is fixed to the ear plate (12) in the middle part of the transmission cylinder (8) through the starting ring (13). The damping blade (10) is fixed on the transmission cylinder (8) and rotates in a circle with the transmission cylinder (8).

3. A debris flow protection construction device according to claim 1, characterized in that: The flexible armor (4) comprises a plurality of honeycomb sandwich panels (14) hinged to each other, the honeycomb sandwich panels (14) being distributed in an array, and two opposite edges of the honeycomb sandwich panels (14) are each provided with a lifting lug (15), the A steel strand (6) passing through the corresponding lifting lug (15), and a fastening rope (16) is provided in the honeycomb sandwich panel (14) along the vertical direction, and the two ends of the fastening rope (16) are respectively fixed to the corresponding A steel strand (6).

4. A debris flow protection construction device according to claim 1, characterized in that: It also comprises a drainage ditch (17), the drainage ditch (17) being located behind the retaining wall (1), the retaining wall (1) being provided with a flood discharge hole (18), the flood discharge hole (18) being hinged with a baffle (19), the baffle (19) being located above the drainage ditch (17), and the debris flow in the flood discharge hole (18) entering the drainage ditch (17) through the baffle (19).

5. A debris flow protection construction device according to claim 2, characterized in that: The damping blades (10) are six in number, and the damping blades (10) are divided into two groups. The two groups of damping blades (10) are respectively arranged at two ends of the transmission cylinder (8), and each group of damping blades (10) is evenly distributed around the circumference of the transmission cylinder (8). The ear plate (12) is located between the two groups of damping blades (10).

6. A debris flow protection construction device according to claim 4, characterized in that: The retaining wall (1) is provided with a reinforcing rib (20), the reinforcing rib (20) spanning the drainage groove (17), the reinforcing rib (20) being multiple and evenly distributed along the drainage groove (17), and a retaining rod (21) being fixed between adjacent reinforcing ribs (20), so that the rotation angle of the baffle (19) is not greater than 30 degrees through the retaining rod (21).

7. A construction method of a debris flow protection construction device, characterized in that: The following steps are involved: S1: Measure the shape and area of ​​the protected structure; S2: Determine the shape, size and quantity of the protective construction device according to any one of claims 1 to 6 according to the measurement results of S1; S3: Construct a concrete pile retaining wall next to the reservoir, dig a drainage ditch behind the retaining wall, and cast it to form a debris flow diversion channel after hardening.

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