A debris flow drainage channel structure

Abstract

This utility model discloses a debris flow drainage channel structure, belonging to the technical field of drainage channel technology. It is assembled from several drainage channel units, each containing two sets of spaced-apart channel bodies. Each channel body includes a base plate, with detachably connected concrete side walls above the base plate. Reinforcing ribs are bolted between the base plate and the concrete side walls. A vertical first steel sheet pile is driven through the base plate, its bottom end inserted into the soil at the bottom of the channel. Ribs are detachably connected between the two sets of concrete side walls. Two sets of spaced-apart protrusions are fixed to the inner side of the concrete side walls to form slots, with corresponding slots on the base plate. The slots and openings together form an insertion space for the ribs to be positioned and inserted. The tops of adjacent concrete side walls are bolted together by interlocking pieces within grooves. This structure is highly efficient to construct, requires only replacement of damaged parts for maintenance, is low-cost, structurally stable, wear-resistant, and durable, effectively solving the problems of inconvenient maintenance and construction limitations associated with traditional drainage channels.

Description

Technical Field

[0001] This utility model relates to the field of drainage channel technology, specifically to a debris flow drainage channel structure. Background Technology

[0002] Currently, the main engineering measures for debris flow control worldwide include silt traps, check dams, drainage channels, diversion dikes, and sediment retention ponds. Among these, drainage channels, as a core prevention and control method, are widely used in practice. Debris flow drainage channels are mainly divided into two categories: one is fully lined channels, typically represented by V-shaped channels, characterized by their narrowness, depth, and sharpness, with the two sloping bottom surfaces forming an impermeable underlying surface; the other is soft-foundation energy-dissipating channels (such as the Dongchuan channel), whose characteristics are exactly the opposite of fully lined channels. Only the side walls of the drainage channel are treated, leaving the bottom completely exposed to increase friction. Ribs are set at certain intervals on the bottom of the channel, using the interception effect of the ribs to generate turbulence in the channel, which helps the debris flow particles of different sizes collide, consumes the kinetic energy of the debris flow, and regulates the speed of the debris flow.

[0003] While traditional drainage channels have played a crucial role in debris flow prevention, several engineering challenges remain. Taking the Dongchuan channel as an example, debris flows often carry large amounts of boulders, resulting in significant abrasion between the debris and reinforced concrete structures. In particular, intense collisions and friction with the ribs can easily lead to damage in the center of the ribs and erosion on both sides. Furthermore, the existing Dongchuan channel's sidewalls and ribs are cast in situ, providing a fixed structure. Subsequent repairs to damaged structures face the problem of requiring complete removal of damaged sections, which is inconvenient and costly. Additionally, the situ casting construction method also presents challenges such as limited construction space in mountainous areas and long concrete curing periods (significantly affected by rainwater).

[0004] Therefore, it is necessary to optimize and improve the existing drainage channel technology to effectively solve the above-mentioned engineering pain points. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes a debris flow drainage channel structure. It adopts a prefabricated assembly structure, ensuring controllable quality, efficient construction, and flexible maintenance.

[0006] The technical solution to the technical problem solved by this utility model is as follows: A debris flow drainage channel structure includes several assembled drainage channel units. Each drainage channel unit includes two spaced-apart channel bodies. Each channel body includes a bottom plate, and a concrete side wall is detachably connected above the bottom plate. A reinforcing rib is bolted between the bottom plate and the concrete side wall. A first steel sheet pile is vertically installed and connected through the bottom plate. A rib sill is detachably connected between the two sets of concrete side walls.

[0007] Preferably, the inner sidewall of the concrete sidewall is fixedly connected with two sets of spaced protrusions, forming a slot between the two protrusions; a groove corresponding to the slot is opened on the base plate, and the slot and the groove together form an insertion space; the two ends of the rib are positioned and inserted into the insertion space.

[0008] Preferably, the top of the boss is bolted with a limiting piece for vertically limiting the rib.

[0009] Preferably, it also includes a second sheet pile, and at least one vertical hole is provided at the middle position of the rib; the bottom end of the second sheet pile penetrates the vertical hole and is inserted into the soil at the bottom of the trench.

[0010] Preferably, an internal threaded sleeve is pre-embedded in the rib, and the internal threaded sleeve communicates with the vertical hole; a locking hole is opened on the second steel sheet pile, and the internal threaded sleeve is threadedly connected to the locking hole with a second screw.

[0011] Preferably, the bottom of the concrete sidewall is provided with an installation hole, and a positioning column is connected to the base plate, the positioning column being adapted to be inserted into the installation hole.

[0012] Preferably, a groove is provided at the top edge of the concrete sidewall, and a first sleeve is pre-embedded at the top of the concrete sidewall, with the end of the first sleeve communicating with the groove; interlocking pieces are provided in the grooves of adjacent concrete sidewalls, and adjacent concrete sidewalls are bolted together and fixed by the interlocking pieces.

[0013] Preferably, the reinforcing rib is provided with a flange plate, a plurality of second sleeves are pre-embedded in the outer sidewall of the concrete sidewall, and a plurality of first screws are connected to the flange plate, the first screws being threadedly connected to the second sleeves.

[0014] Preferably, a pressure cap is connected to the top of the first sheet pile, and guide holes are provided on the flange plate and the bottom plate. The bottom end of the first sheet pile passes through the guide hole and is inserted into the soil at the bottom of the trench, and the pressure cap is pressed against the surface of the flange plate.

[0015] Preferably, the concrete sidewalls, bottom slabs, and ribs are made of fiber-reinforced concrete or silica fume modified concrete.

[0016] Compared with existing technologies, the above technical solution has the following advantages or beneficial effects: 1. This utility model adopts a prefabricated assembly structure, with concrete side walls, ribs, etc., all prefabricated and assembled, eliminating the need for extensive on-site pouring; at the same time, the concrete side walls and ribs adopt a detachable connection method, requiring only replacement of damaged parts later without overall destruction, significantly reducing maintenance costs and operational difficulty, making construction more efficient and subsequent maintenance more flexible.

[0017] 2. This utility model utilizes a slot formed by interval protrusions on the inner side of the concrete sidewall and a corresponding groove in the base plate to create a standardized insertion space. This allows for direct insertion of the ribs at both ends without complex procedures. Simultaneously, a limiting plate bolted to the top of the protrusions vertically limits the ribs, preventing displacement after installation. This structure ensures the alignment accuracy between the ribs and the main body of the groove while eliminating the constraints of on-site casting. When disassembling and replacing the ribs later, only the limiting plate needs to be removed, significantly improving disassembly and assembly efficiency compared to existing fixed cast-in-place rib technology.

[0018] 3. This utility model ensures structural stability through multiple structural designs: First, reinforcing ribs are bolted between the base plate and the concrete side walls to improve local connection strength; second, a first steel sheet pile is installed, penetrating the base plate and inserting into the soil at the bottom of the trench, and a second steel sheet pile is installed, penetrating the soil at the bottom of the rib slot, to firmly fix the overall structure to the foundation; third, adjacent concrete side walls are bolted together by interlocking plates at the top to enhance overall continuity and better resist the lateral and longitudinal impact forces of debris flows.

[0019] 4. The bottom of the concrete sidewall is fitted with the positioning column of the base plate through the mounting holes to achieve preliminary accurate positioning. Then, the flange of the reinforcing rib is fixed to the second sleeve embedded in the concrete sidewall with the first screw. The connection between the rib and the second steel sheet pile is also achieved by the threaded engagement of the pre-embedded internal thread sleeve and the locking hole. This design avoids component misalignment during on-site assembly and provides stable fastening force through the threaded connection. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] Figure 1 It is a 3D view of a single tank body.

[0022] Figure 2 yes Figure 1 Exploded view of the main body of the central tank.

[0023] Figure 3 It is a three-dimensional structural diagram of a set of guide slot units.

[0024] Figure 4 yes Figure 3 Enlarged schematic diagram of the structure of region A in the middle.

[0025] Figure 5 This is a structural diagram of the guide channel unit after construction and assembly.

[0026] Figure 6 This is a three-dimensional view of the structure after multiple guide slot units are assembled and interlocked in another embodiment.

[0027] Figure 7 yes Figure 6 Exploded view of the structure of a single row of guide slots unit.

[0028] Figure 8 yes Figure 7 A schematic diagram of the structure after the construction and assembly of a single row of guide channels.

[0029] Explanation of reference numerals in the attached figures: 1. Base plate; 2. Concrete sidewall; 3. Reinforcing rib; 4. First sheet pile; 5. Boss; 6. Groove; 7. Pressure cap; 8. Groove; 9. First sleeve; 10. Flange plate; 11. First screw; 12. Second sleeve; 13. Positioning post; 14. Guide hole; 15. Rib sill; 16. Limiting plate; 17. Second sheet pile; 18. Vertical hole; 19. Internal threaded sleeve; 20. Locking hole; 21. Second screw; 22. Soil at the bottom of the trench; 23. Slope soil; 24. Interlocking plate. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] Example 1: like Figure 1 - Figure 5 As shown, this embodiment proposes a debris flow drainage channel structure, including several assembled drainage channel units. Each drainage channel unit includes two sets of spaced-apart channel bodies. The channel body includes a bottom plate 1, and a concrete side wall 2 is detachably connected to the top of the bottom plate 1. The detachable connection method includes, but is not limited to, plug-in and / or bolt-in. A reinforcing rib 3 is bolted between the bottom plate 1 and the concrete side wall 2 to improve the local connection strength. A first steel sheet pile 4 is vertically installed and connected to the bottom plate 1. The first steel sheet pile 4 is driven into the soil 22 at the bottom of the channel to ensure structural stability and better resist the impact of debris flow. A rib sill 15 is detachably connected between the two sets of concrete side walls 2. This detachable connection includes, but is not limited to, one or more combinations of plug-in, snap-in, and bolt-in.

[0032] Regarding the connection method of rib 15, the following structure can be adopted: Two sets of spaced protrusions 5 are fixedly connected to the inner sidewall of the concrete sidewall 2. The protrusions 5 can be integrally formed with the concrete sidewall 2, and their structural strength is much higher than that of protrusions 5 spliced ​​later. They can withstand the impact load of debris flow transmitted by the rib 15 without easily breaking. A slot is formed between the two protrusions 5. A groove 6 corresponding to the slot is opened on the base plate 1. The slot and the groove 6 together form an insertion space. The two ends of the rib 15 are positioned and inserted into the insertion space. The rib 15 is connected by insertion without casting and bonding. When the rib 15 is partially damaged by debris flow impact and friction, it is not necessary to completely remove the groove as in the existing technology. The damaged rib 15 can be directly removed from the insertion space and replaced with a new precast rib 15. This can greatly reduce maintenance procedures, shorten maintenance time, avoid material waste caused by overall destruction, and reduce maintenance costs and operation difficulty in complex mountain environments.

[0033] In some embodiments, a limiting piece 16 is bolted to the top of the boss 5 to vertically limit the rib 15, restricting its vertical displacement, resisting the impact load of debris flow, and preventing structural failure. When debris flow moves, it carries a large number of rocks, generating a strong upward impact load on the rib 15. If the rib 15 is inserted into the insertion space of the "slot + groove 6" without vertical constraint, the rib 15 is easily pushed up by the impact, causing it to be unable to stably intercept debris and consume kinetic energy. The limiting piece 16 can avoid the problem of the rib 15 failing to conduct water due to vertical displacement.

[0034] Application Results: This solution utilizes slots formed by interval protrusions 5 on the inner side of the concrete sidewall 2 and corresponding slots 6 on the base plate 1 to create a standardized insertion space. This allows the ribs 15 to be directly positioned and inserted without complex procedures. Simultaneously, the limiting plate 16 bolted to the top of the protrusion 5 vertically limits the ribs 15, preventing displacement after installation. This structure ensures the alignment accuracy between the ribs 15 and the main body of the groove while eliminating the constraints of on-site casting. When disassembling and replacing the ribs 15, only the limiting plate 16 needs to be removed, significantly improving disassembly and assembly efficiency compared to existing fixed cast-in-place ribs 15 technologies.

[0035] In some embodiments, to facilitate the installation of the concrete sidewall 2 and the base plate 1, an installation hole is provided at the bottom of the concrete sidewall 2, and a positioning post 13 is connected to the base plate 1, which is fitted into the installation hole. This enables rapid and accurate positioning of the concrete sidewall 2 and the base plate 1, significantly reducing construction difficulty and shortening the assembly time of a single set of tank bodies. Moreover, after the positioning post 13 is inserted into the installation hole, the concrete sidewall 2 is restricted from lateral sliding and vertical tilting, maintaining a stable posture without the need for additional support. In addition, the positioning post 13 is equivalent to adding an extra lateral thrust support to the concrete sidewall 2, which can help transfer force and further improve the concrete sidewall 2's resistance to tilting and displacement under debris flow impact.

[0036] In some embodiments, a groove 8 is provided at the top edge of the concrete sidewall 2, and a first sleeve 9 is pre-embedded at the top of the concrete sidewall 2, with the end of the first sleeve 9 communicating with the groove 8; interlocking pieces 24 are provided in the grooves 8 of adjacent concrete sidewalls 2, and adjacent concrete sidewalls 2 are bolted together and fixed by the interlocking pieces 24. When debris flows move, they will generate a continuous lateral impact force on the concrete sidewalls 2 on both sides of the trench. If the adjacent sidewalls are simply spliced ​​without reliable connection, gaps, displacement or even disconnection are likely to occur. However, by setting the interlocking pieces 24, multiple precast concrete sidewalls 2 can be connected in series into a continuous whole, improving the trench's resistance to lateral impact.

[0037] In some embodiments, the reinforcing rib 3 is provided with a flange plate 10, and a plurality of second sleeves 12 are pre-embedded in the outer sidewall of the concrete sidewall 2. A plurality of first screws 11 are connected to the flange plate 10, and the first screws 11 are threadedly connected to the second sleeves 12. This structural design achieves a reliable prefabrication connection, improves assembly efficiency, and enhances the impact resistance stability of the concrete sidewall 2.

[0038] In some embodiments, a pressure cap 7 is connected to the top of the first sheet pile 4, and guide holes 14 are provided between the flange plate 10 and the bottom plate 1. The bottom end of the first sheet pile 4 passes through the guide holes 14 and is inserted into the soil 22 at the bottom of the trench. The pressure cap 7 is pressed against the surface of the flange plate 10. The pressure cap 7 can further realize the connection between the flange plate 10 and the bottom plate 1, and improve the overall stability.

[0039] In some embodiments, the concrete sidewalls 2, the base slab 1, and the ribs 15 are made of fiber-reinforced concrete or silica fume modified concrete. For example, C40-C50 high-strength wear-resistant concrete, C40-C50 grade steel fiber / basalt fiber reinforced wear-resistant concrete, and C40 silica fume modified high-strength concrete are used. These materials have significantly better hardness and wear resistance than ordinary reinforced concrete, effectively resisting the impact and friction of boulders, reducing structural damage, and extending the overall service life.

[0040] Example 2: like Figure 6 - Figure 8 As shown, the detachable connection method of the rib 15 can also adopt the following structural form: The second sheet pile 17 is used for fixing, and at least one vertical hole 18 is provided in the middle of the rib 15; the bottom end of the second sheet pile 17 passes through the vertical hole 18 and is inserted into the soil 22 at the bottom of the trench. An internal threaded sleeve 19 is pre-embedded in the rib 15, and the internal threaded sleeve 19 communicates with the vertical hole 18; a locking hole 20 is opened on the second sheet pile 17, and the internal threaded sleeve 19 is threadedly connected to the locking hole 20 with a second screw 21.

[0041] In this design, the bottom end of the second sheet pile 17 penetrates the vertical hole 18 in the middle of the rib sill 15 and inserts into the soil 22 at the bottom of the trench, which is equivalent to providing vertical anchoring support for the rib sill 15 and directly connecting the rib sill 15 to the deep soil 22 at the bottom of the trench, thus restricting the lateral sliding of the rib sill 15 as a whole. At the same time, the middle part of the rib sill 15 is the area where impact loads are concentrated. The cooperation between the vertical hole 18 and the second sheet pile 17 can specifically strengthen the fixing strength of the middle part of the rib sill 15, and prevent displacement and deformation due to excessive force in the middle part.

[0042] The design of the second screw 21 can effectively prevent the sill 15 from rising vertically and limit displacement; at the same time, it retains the characteristics of being detachable and repairable, reducing the cost and difficulty of replacing the sill 15.

[0043] It should be noted that, if necessary, it can also be used in conjunction with the end limiting piece 16 to further improve stability.

[0044] It can be seen that this scheme ensures structural stability through multiple structural designs: First, reinforcing ribs 3 are bolted between the base plate 1 and the concrete sidewall 2 to improve the local connection strength; second, a first steel sheet pile 4 is installed, penetrating the base plate 1 and inserting into the soil 22 at the bottom of the trench, and a second steel sheet pile 17 is installed, penetrating the rib sill 15 and inserting into the soil 22 at the bottom of the trench, to firmly fix the overall structure to the foundation; third, adjacent concrete sidewalls 2 are bolted together by interlocking plates 24 at the top to enhance the overall continuity and better resist the lateral and longitudinal impact forces of debris flows.

[0045] The construction process for the drainage channel is as follows: S1, On-site survey: Determine the construction route of the guide channel; Layout and positioning: Determine the installation points.

[0046] S2, Foundation treatment of the trench bottom: Excavate the foundation trench of the guide trench according to the boundary line, and the excavation depth and width meet the design requirements.

[0047] S3, Assembly of guide slot unit: S31, Installation of base plate 1: Hoist the precast base plate 1 to the bottom foundation of the trench according to the marked position, and adjust the levelness of the base plate 1; S32, hoisting of concrete side wall 2: use a crane to lift the precast concrete side wall 2, align it with the positioning column 13 on the base plate 1, and make the mounting hole at the bottom of the concrete side wall 2 accurately insert into the positioning column 13 to complete the initial positioning; S33, Installation of reinforcing rib plate 3: Attach the reinforcing rib plate 3 with flange plate 10 to the outside of the concrete side wall 2, align the screw holes on the flange plate 10 with the second sleeve 12 pre-embedded in the concrete side wall 2, insert the first screw 11 and tighten it. S34, Installation of the first sheet pile 4: The top end of the first sheet pile 4 is passed through the guide hole 14 between the reinforcing rib plate and the bottom plate 1, and the bottom end of the sheet pile is vertically driven into the soil 22 at the bottom of the trench using a pile driver.

[0048] S4, sill 15 installation: Method 1: Align the two ends of the precast rib 15 with the slot formed by the inner protrusion 5 of the concrete side wall 2 and the insertion space formed by the groove 6 of the base plate 1 and insert it slowly; place the limiting piece 16 on the top of the protrusion 5 and use screws to fasten the limiting piece 16 to the protrusion 5 to achieve vertical limiting of the rib 15 and prevent the rib 15 from moving upward due to the impact of the mudslide.

[0049] Method 2: Align both ends of the precast rib 15 with the slot formed by the inner boss 5 of the concrete side wall 2 and the groove 6 of the bottom plate 1 to form the insertion space and slowly insert it; align the top of the second sheet pile 17 through the vertical hole 18 in the middle of the rib 15, and use a pile driver to drive the bottom end of the sheet pile vertically into the soil 22 at the bottom of the trench. Pass one end of the second screw 21 through the internal thread sleeve 19 and the locking hole 20 of the second sheet pile 17 and tighten it to fix it; if it is necessary to enhance stability, a limiting plate 16 can be added to the top of the boss 5 according to the steps of Method 1.

[0050] S4, Connection of adjacent guide slot units: S41, Align Adjacent Concrete Side Walls 2: Adjust the concrete side walls 2 of adjacent guide channel units so that the grooves 8 at the top of the two side walls are aligned to form a continuous installation space; S42, Interlocking plate 24 installation: Place the interlocking plate 24 into the aligned groove 8 so that the screw hole on the interlocking plate 24 is connected to the first sleeve 9 pre-embedded in the concrete side wall 2. Insert the high-strength bolt and tighten it to connect the multiple sections of the concrete side wall 2 into a whole.

[0051] S5, Backfilling of soil on the outer slope of concrete sidewall 23: Backfilling will only proceed after the drainage channel unit is assembled and confirmed to be qualified. A "layered backfilling and compaction" process will be adopted, with the backfill height following design requirements, generally level with or slightly below the top of the concrete sidewall 2.

[0052] In summary: This utility model adopts a prefabricated assembly structure, with the concrete side wall 2 and rib 15 being prefabricated and assembled, eliminating the need for extensive on-site pouring; at the same time, the concrete side wall 2 and rib 15 adopt a detachable connection method, requiring only the replacement of damaged parts in the later stage without overall destruction, which greatly reduces maintenance costs and operational difficulty, making construction more efficient and subsequent maintenance more flexible.

[0053] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A debris flow drainage channel structure, characterized in that, The system includes several assembled drainage channel units. Each drainage channel unit includes two sets of spaced-apart channel bodies. Each channel body includes a base plate (1). A concrete side wall (2) is detachably connected above the base plate (1). A reinforcing rib plate (3) is bolted between the base plate (1) and the concrete side wall (2). A first steel sheet pile (4) is vertically installed and connected to the base plate (1). A rib sill (15) is detachably connected between the two sets of concrete side walls (2).

2. The debris flow drainage channel structure according to claim 1, characterized in that, The inner side wall of the concrete side wall (2) is fixedly connected with two sets of spaced protrusions (5), and a slot is formed between the two protrusions (5); a slot (6) corresponding to the slot is opened on the base plate (1), and the slot and the slot (6) together form an insertion space; the two ends of the rib (15) are positioned and inserted into the insertion space.

3. The debris flow drainage channel structure according to claim 2, characterized in that, The top of the boss (5) is bolted with a limiting piece (16) for vertically limiting the rib (15).

4. A debris flow drainage channel structure according to claim 2 or 3, characterized in that, It also includes a second sheet pile (17), and at least one vertical hole (18) is provided in the middle of the rib (15); the bottom end of the second sheet pile (17) penetrates the vertical hole (18) and is inserted into the soil (22) at the bottom of the trench.

5. The debris flow drainage channel structure according to claim 4, characterized in that, An internal threaded sleeve (19) is pre-embedded in the rib (15), and the internal threaded sleeve (19) is connected to the vertical hole (18); a locking hole (20) is opened on the second steel sheet pile (17), and the internal threaded sleeve (19) and the locking hole (20) are threadedly connected with a second screw (21).

6. The debris flow drainage channel structure according to claim 1, characterized in that, The bottom of the concrete side wall (2) is provided with an installation hole, and a positioning column (13) is connected on the base plate (1). The positioning column (13) is adapted to be inserted into the installation hole.

7. The debris flow drainage channel structure according to claim 1, characterized in that, The top edge of the concrete sidewall (2) is provided with a groove (8), and a first sleeve (9) is also pre-embedded in the top of the concrete sidewall (2). The end of the first sleeve (9) is connected to the groove (8); an interlocking piece (24) is provided in the groove (8) of the adjacent concrete sidewall (2), and the adjacent concrete sidewall (2) is bolted and fixed by the interlocking piece (24).

8. The debris flow drainage channel structure according to claim 1, characterized in that, The reinforcing rib (3) is provided with a flange plate (10), and a number of second sleeves (12) are pre-embedded on the outer side wall of the concrete side wall (2). A number of first screws (11) are connected on the flange plate (10), and the first screws (11) are threadedly connected to the second sleeves (12).

9. A debris flow drainage channel structure according to claim 8, characterized in that, The first sheet pile (4) is connected to a pressure cap (7) at the top. The flange plate (10) and the bottom plate (1) are provided with guide holes (14). The bottom end of the first sheet pile (4) passes through the guide hole (14) and is inserted into the soil (22) at the bottom of the trench. The pressure cap (7) is pressed against the surface of the flange plate (10).

10. The debris flow drainage channel structure according to claim 1, characterized in that, The concrete sidewalls (2), bottom slab (1), and ribs (15) are made of fiber-reinforced concrete or silica fume modified concrete.

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