Composite river channel slope protection mechanism and slope protection method

Abstract

According to the slope protection mechanism and the protection method, multiple sets of adjacent protection structures are connected through fixing structures, the protection structures and the fixing structures cooperate, and stable protection on the bank side of a river channel is achieved. The method is characterized in that (1) fixing nails on connecting strips are inserted into river bank soil, and herbaceous plants are planted between two adjacent rows of wave-shaped second protection pipes; (2) when the water flow impacts, the first protection pipe and the second protection pipe effectively guide the water flow to flow along the axial direction, so that the direct impact force on the plants is reduced; (3) when the water level of the riverway rises, water flow can enter the lifting cylinder through a long and thin strip-shaped hole of the water inlet cover and then flow into the second protection pipe and the first protection pipe, the density difference between the second protection pipe and the first protection pipe and the water flow of the riverway is reduced, and impact on the slope protection caused by rising of the water level is reduced; and (4) when the water level of the river channel drops, the water stored in the second protection pipe is slowly discharged through the water permeable holes, so that secondary scouring of concentrated drainage to the shoreside soil is avoided.

Description

Technical Field

[0001] The present invention relates to a composite river channel slope protection mechanism and slope protection method, which relate to a slope protection mechanism suitable for river channel bank protection, belonging to the technical field of river channel protection facilities, and particularly to a slope protection mechanism and protection method in which multiple groups of adjacent protection structures are connected by a fixed structure, and the protection structure and the fixed structure cooperate to achieve stable protection of the river channel bank. Background Art

[0002] In water conservancy projects, river bank protection is a key link in preventing river bank soil from being eroded by water flow and ensuring the stability of the river. River banks are prone to soil erosion, collapse and other problems. Lack of river bank protection will lead to changes in river width and direction, affect the river's flood discharge capacity, and increase the risk of flood disasters. Therefore, it is very necessary to protect the river bank. At present, river bank protection technologies are mainly ecological and engineering. Ecological slope protection creates an ecological protection layer by planting herbs, shrubs, trees and other plants. During flood season, high-speed and large-flow river water will have a strong scouring force on vegetation, causing vegetation to fall and roots to be damaged. The system is loose, making it difficult to effectively protect the river bank. Concrete and gabion slope protection are commonly used for engineering slope protection. Concrete slope protection uses prefabricated concrete blocks or cast-in-place concrete to resist the impact of water flow with a high-strength rigid structure. Although concrete slope protection can resist the impact of water flow, it blocks the material exchange between river water and soil and groundwater, destroying the river ecosystem. Gabion slope protection is to fill stones in metal mesh cages and pile them on the river bank, relying on the friction of stones and the restraining force of mesh cages to achieve slope protection. The stones in the gabion slope protection are prone to displacement and loosening under long-term erosion by water flow, making the gabion structure loose, the protective function weakened, and the protective effect unsustainable. Announcement No. CN109811722B discloses a water conservancy river slope protection, including one or more slope protection rods laid on the river slope protection, a first baffle is provided on the top of the slope protection rod, the first baffle is close to the top of the slope and blocks water from the top of the slope, and an underground box is provided at the bottom of the one or more slope protection rods; a second baffle is provided in the underground box, and a movable cavity with an upper end opening is provided in the underground box, and the second baffle is telescopically installed in the movable cavity, and a ground plug is provided at the bottom of the underground box facing each slope protection rod, and a sealed channel is provided in the ground plug, which can reduce soil loss and increase the rising height of the river water, thereby playing a flood prevention role. However, the device cannot fully cover the river slope protection and cannot provide uniform and continuous protection for the slope surface. Summary of the Invention

[0003] In order to improve the above situation, the present invention provides a composite river bank slope protection mechanism and slope protection method, which provides a plurality of adjacent protective structures connected by a fixed structure, and the protective structure and the fixed structure cooperate to achieve stable protection of the river bank.

[0004] The composite river slope protection mechanism of the present invention is realized as follows: The composite river slope protection mechanism of the present invention includes a protection structure and a fixing structure; The feature is that there are multiple groups of protective structures, and the multiple adjacent groups of protective structures are connected by fixed structures, and the protective structures and the fixed structures cooperate to achieve protection of the river bank; The protective structure consists of a first protective tube, a second protective tube, a water permeable hole, a first connecting tube, a second connecting tube, a lifting tube, and a water inlet cover, wherein the first protective tube is a straight tube, the second protective tube is a quasi-sinusoidal wave tube, both ends of the second protective tube are connected to the first protective tube, a water permeable hole is opened at the trough of the wave-shaped second protective tube, a lifting tube is provided at the crest of the wave-shaped second protective tube, and the upper end of the lifting tube is provided with a water inlet cover, and the first connecting tube and the second connecting tube are symmetrically connected at one end of the first protective tube away from the second protective tube; The fixing structure is composed of a connecting strip and fixing nails. Two adjacent groups of protective structures are connected by the connecting strip. One end of the connecting strip is connected to the first connecting tube of one group of protective structures, and the other end of the connecting strip is connected to the second connecting tube of the other adjacent group of protective structures. A plurality of fixing nails are fixedly connected to the connecting strip, and the fixing nails are perpendicular to the plane where the first protective tube and the connecting strip are located. Furthermore, the fixed pins are replaced by movable limiting pins, and the length of the movable limiting pins is adjustable relative to the connecting strip; Furthermore, the outer wall of the nail body of the fixing nail is provided with multiple circles of anti-slip grooves; The present invention also relates to a composite river bank slope protection method, which is characterized in that the composite river bank slope protection mechanism is used to protect the river bank, comprising the following steps: (1) Insert the fixing nails on the connecting strip into the river bank soil and plant herbaceous plants between two adjacent rows of wavy second protective pipes; (2) When water flows, the first and second protective tubes effectively guide the water to flow axially first, reducing the direct impact force on the plants; (3) When the water level in the river rises, the water can enter the lifting cylinder through the slender holes in the water inlet cover, and then flow into the second protection pipe and the first protection pipe, reducing the density difference between the second protection pipe and the first protection pipe and the river water flow, and reducing the impact of the rising water level on the slope protection; (4) When the water level in the river drops, the water stored in the second protection pipe is slowly discharged through the permeable holes, avoiding secondary erosion of the bank soil by centralized drainage. Beneficial effects

[0005] 1. Vegetation is combined with engineering structures to form multiple protections. Compared with simple ecological slope protection, it increases the protection stability and anti-scouring ability. Compared with simple engineering slope protection, it incorporates ecological factors, has lower costs, and is more closely connected with the river bank soil.

[0006] 2. The wavy protective pipe and trapezoidal cross-section can effectively disperse water force, reduce the scouring force on riverbank vegetation, and effectively protect the riverbank.

[0007] 3. The multi-group combined protection structure is easy to install quickly and can reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a three-dimensional structural diagram of a composite river slope protection mechanism of the present invention; Figure 2 This is a three-dimensional structural diagram of a composite river slope protection mechanism of the present invention; Figure 3 This is a structural diagram of a composite river slope protection mechanism of the present invention; Figure 4 This is a three-dimensional structural diagram of Example 2 of a composite river slope protection mechanism of the present invention; Figure 5 This is a three-dimensional structural diagram of Example 3 of a composite river slope protection mechanism of the present invention. Attached photos

[0009] The components include: a first protective tube (1), a second protective tube (2), a water permeable hole (3), a first connecting tube (4), a second connecting tube (5), a connecting strip (6), a fixing pin (7), a lifting tube (8), a water inlet cover (9), a movable limiting pin (10), and an anti-slip groove (11). DETAILED DESCRIPTION Example 1

[0010] The present invention provides a composite river slope protection mechanism comprising a protection structure and a fixing structure; The feature is that there are multiple groups of protective structures, and the multiple adjacent groups of protective structures are connected by fixed structures, and the protective structures and the fixed structures cooperate to achieve protection of the river bank; The protective structure is composed of a first protective tube (1), a second protective tube (2), a water permeable hole (3), a first connecting tube (4), a second connecting tube (5), a lifting tube (8), and a water inlet cover (9), wherein the first protective tube (1) is a straight tube, the second protective tube (2) is a quasi-sine wave tube, both ends of the second protective tube (2) are connected to the first protective tube (1), a water permeable hole (3) is provided at the trough of the wave-shaped second protective tube (2), a lifting tube (8) is provided at the crest of the wave-shaped second protective tube (2), and a water inlet cover (9) is provided at the upper end of the lifting tube (8), and the first connecting tube (4) and the second connecting tube (5) are symmetrically connected at one end of the first protective tube (1) away from the second protective tube (2); Preferably, the cross section of the first protective tube (1) is a right-angled trapezoid, and the plane where the right-angled side is located is the upper plane; Preferably, a transition section is provided at the connection between the first protection tube (1) and the second protection tube (2), and the diameter of the transition section gradually transitions from the diameter of the first protection tube (1) to the diameter of the second protection tube (2); Preferably, the crests and troughs of the second protective tube (2) are both provided with arc-shaped chamfer transitions; Preferably, the water-permeable holes (3) are distributed along the extension direction of the trough of the second protective tube (2), forming a microporous morphology arranged in a long and thin strip shape; Preferably, a plurality of elongated holes are evenly distributed on the surface of the water inlet cover (9); The fixing structure is composed of a connecting strip (6) and fixing nails (7), and two adjacent groups of protective structures are connected by the connecting strip (6), one end of the connecting strip (6) is connected to the first connecting tube (4) of one group of protective structures, and the other end of the connecting strip (6) is connected to the second connecting tube (5) of another adjacent group of protective structures, and a plurality of fixing nails (7) are fixedly connected to the connecting strip (6), and the fixing nails (7) are perpendicular to the plane where the first protective tube (1) and the connecting strip (6) are located; The present invention provides a composite river bank slope protection method, characterized in that the composite river bank slope protection mechanism is used to protect the river bank, comprising the following steps: (1) inserting the fixing nails (7) on the connecting strip (6) into the river bank soil, and planting herbaceous plants between two adjacent rows of wavy second protective pipes (2); (2) When water flows, the first protective tube (1) and the second protective tube (2) effectively guide the water to flow in the axial direction first, effectively disperse the water force, and reduce the direct impact force on the plants; (3) When the water level in the river rises, the water can enter the lifting cylinder (8) through the slender strip hole of the water inlet cover (9), and then flow into the second protection pipe (2) and the first protection pipe (1), thereby reducing the density difference between the second protection pipe (2) and the first protection pipe (1) and the river water flow, and reducing the impact of the rising water level on the slope protection; (4) When the water level in the river drops, the water stored in the second protection pipe (2) is slowly discharged through the permeable holes (3), thus avoiding secondary scouring of the bank soil by the centralized drainage; Example 3

[0011] The difference between this embodiment and embodiment 1 is that the fixed nail (7) is replaced by a movable limiting nail (10), the length of the movable limiting nail (10) is adjustable relative to the connecting bar (6), and the movable limiting nail (10) can adapt to the deformation and settlement of the shore soil to a certain extent, and adjust the contact and fixed state with the soil through its own movement, thereby maintaining stable support for the protective structure and reducing the risk of loosening or damage to the protective structure due to soil deformation. In addition, the movable limiting nail (10) is relatively easier to disassemble and reinstall, and does not require the use of special tools or a large amount of excavation work to remove it, thereby saving maintenance costs and time and improving the efficiency of maintenance work; Example 3

[0012] The difference between this embodiment and embodiment 1 is that the outer wall of the nail body of the fixing nail (7) is provided with a plurality of anti-skid grooves (11), which can increase the friction between the fixing nail (7) and the surrounding soil. When the fixing nail is inserted into the river bank soil, the anti-skid grooves (11) can be embedded between the soil particles, preventing the fixing nail from loosening or being pulled out when subjected to external forces such as water flow impact and tension of the protective structure, thereby more firmly fixing the connecting strip (6) and the protective structure on the river bank and improving the stability of the entire slope protection mechanism. The first protective pipe (1) is designed to guide and block the water flow in conjunction with the second protective pipe (2). It can reduce the impact of the water runoff when the water level in the river rises, and can also block water and retain water after the water level in the river drops, preventing the river soil from flowing into the river with the water flow, so that part of the water can penetrate into the river bank soil to provide the water required for the growth of vegetation; The cross section of the first protection pipe (1) is a right-angled trapezoid, and the plane where the right-angled side is located is designed as the upper plane. The right-angled trapezoid structure, combined with the contact between the oblique side and the soil, can better resist the lateral thrust of the water flow and the squeezing of the soil, reduce the possibility of displacement or tilt of the protection pipe, and improve the structural stability of the entire slope protection mechanism; A transition section is provided at the connection between the first protection pipe (1) and the second protection pipe (2). The diameter of the transition section gradually transitions from the diameter of the first protection pipe (1) to the diameter of the second protection pipe (2). This design enables the water flow to smoothly transition between the first protection pipe (1) and the second protection pipe (2), thereby reducing the turbulence of the water flow, improving the stability of the slope protection mechanism, and reducing the impact on vegetation. The second protective tube (2) is provided with an arc-shaped chamfer transition design at the wave crests and wave troughs, which can reduce the resistance of water flow and the generation of vortices at the wave crests and wave troughs, help the water flow to pass through the water permeable holes more smoothly, and prevent pressure accumulation in the protective tube due to poor water flow; The water permeable holes (3) are distributed along the extension direction of the trough of the second protective pipe (2), forming a design of microporous morphology arranged in a slender strip shape. The microporous morphology water permeable holes (3) arranged in a slender strip shape have a certain obstruction effect on water flow. When water flows out of the protective pipe through the water permeable holes (3), it can slow down the water flow speed, reduce the scouring of the slope protection soil by the water flow, and protect the integrity of the slope protection; The surface of the water inlet cover (9) is evenly distributed with a plurality of thin and long holes, which can prevent larger debris from entering the interior of the lifting cylinder. At the same time, when the water flow hits the water inlet cover, it can disperse the water flow into multiple small water flow beams, reducing the impact force of the water flow on the water inlet cover and the lifting cylinder, thereby extending the service life of the device; Multiple groups of adjacent protective structures are connected by fixed structures, and the protective structures and fixed structures work together to achieve the purpose of stable protection of the river bank.

[0013] It should be noted that, unless otherwise expressly specified or limited, the terms "placed in," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections such as hemming, rivet connection, pin connection, adhesive connection, and welding connection; detachable connections such as threaded connection, snap connection, and hinge connection; or integral connection; electrical connection; direct connection; indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0014] It should be further pointed out that, when describing the above specific embodiment, for the sake of simplicity and clarity, only the differences between the above specific embodiment and other embodiments are described. However, those skilled in the art should know that the above specific embodiment itself is also an independent technical solution.

Claims

1. A composite river slope protection method, characterized by: A composite river bank slope protection mechanism is used to protect the river bank, including the following steps: inserting the fixing nails on the connecting strip into the river bank soil, and planting herbaceous plants between two adjacent rows of wavy second protection pipes; when the water flow hits, the first protection pipe and the second protection pipe effectively guide the water flow to flow axially first, reducing the direct impact on the plants; when the water level in the river rises, the water flow can enter the lifting cylinder through the slender strip holes of the water inlet cover, and then flow into the second protection pipe and the first protection pipe, reducing the density difference between the second protection pipe and the first protection pipe and the river water flow, and reducing the impact of the rising water level on the slope protection; when the water level in the river drops, the water stored in the second protection pipe is slowly discharged through the water permeable holes, avoiding secondary erosion of the bank soil by centralized drainage.

2. A composite river slope protection method according to claim 1, characterized in that The composite river channel slope protection mechanism includes a protective structure and a fixed structure; the protective structure has multiple groups, and multiple adjacent groups of protective structures are connected by fixed structures. The protective structure and the fixed structure work together to achieve protection of the river bank; the protective structure consists of a first protective tube, a second protective tube, a water permeable hole, a first connecting tube, a second connecting tube, a lifting tube, and a water inlet cover. Both ends of the second protective tube are connected to the first protective tube, a water permeable hole is opened at the trough of the wavy second protective tube, a lifting tube is provided at the crest of the wavy second protective tube, and a water inlet cover is provided at the upper end of the lifting tube. The first protective tube is symmetrically connected to the first connecting tube and the second connecting tube at one end away from the second protective tube; the fixed structure consists of a connecting bar and fixing nails. Two adjacent groups of protective structures are connected by a connecting bar. One end of the connecting bar is connected to the first connecting tube of one group of protective structures, and the other end of the connecting bar is connected to the second connecting tube of another group of protective structures adjacent to it. Multiple fixing nails are fixedly connected to the connecting bar.

3. A composite river slope protection method according to claim 2, characterized in that The fixed nails are replaced by movable limiting nails, and the length of the movable limiting nails is adjustable relative to the connecting strip.

4. A composite river slope protection method according to claim 2, characterized in that The outer wall of the nail body of the fixing nail is provided with multiple circles of anti-slip grooves.

5. A composite river slope protection method according to claim 2, characterized in that The first protection tube is in the shape of a straight tube, the second protection tube is in the shape of a quasi-sine wave tube, the cross section of the first protection tube is in the shape of a right-angled trapezoid, and the plane where the right-angled side is located is the upper plane.

6. A composite river slope protection method according to claim 2, characterized in that A transition section is provided at the connection between the first protection tube and the second protection tube, and the diameter of the transition section gradually transitions from the diameter of the first protection tube to the diameter of the second protection tube.

7. A composite river slope protection method according to claim 2, characterized in that Arc-shaped chamfer transitions are provided at the wave crests and wave troughs of the second protective tube.

8. A composite river slope protection method according to claim 2, characterized in that The water-permeable holes are distributed along the extension direction of the wave trough of the second protection tube, forming a micro-pore shape arranged in a slender strip shape.

9. A composite river slope protection method according to claim 2, characterized in that A plurality of elongated holes are evenly distributed on the surface of the water inlet cover.

10. A composite river slope protection method according to claim 2, characterized in that The fixing nails are perpendicular to the plane where the first protection tube and the connecting strip are located.

Images