Transverse multi-stage layered snail-resisting ecological bank protection system

Abstract

The utility model discloses a transverse multi-stage layered snail prevention ecological bank protection system. The ecological bank protection system comprises a shallow water inactivation area, a middle-layer transformation area and a high-layer safety area which are sequentially arranged on a river bank in the direction away from a river channel. The shallow water inactivation area is arranged in an area between the lower spiral line and the dense spiral line and comprises a spiral blocking groove which is arranged in a sinking manner; the middle-layer transformation area is arranged in an area between the dense spiral and the upper spiral and comprises a laid spiral-free soil dressing layer; the high-rise safety area is arranged in an area above the spiral line, and snail inhibiting plants are planted in the high-rise safety area. According to the technical scheme, the shallow water inactivation area, the middle-layer transformation area and the high-layer safety area are sequentially arranged in the direction away from the river channel, and each area has a specific oncomelania prevention function, so that a multi-layer and three-dimensional prevention and treatment system is formed according to the elevation distribution characteristics of the oncomelania, the propagation path of the oncomelania is effectively blocked, and the overall prevention and treatment effect is improved.

Description

Technical Field

[0001] This application relates to the field of water conservancy and schistosomiasis control technology, and in particular to a transverse multi-level layered snail-resistant ecological bank protection system. Background Technology

[0002] Schistosomiasis is a serious parasitic disease caused by the parasite Schistosoma infesting the human body. It can lead to irreversible damage such as hepatosplenomegaly, portal hypertension, and developmental disorders in children. Controlling Oncomelania snails is the most effective way to prevent and control schistosomiasis.

[0003] Currently, planting snail-inhibiting plants is a common method for snail control among existing technologies. However, this method has significant limitations in practical application. Extensive practice and research have confirmed that simply planting snail-inhibiting plants is not ideal in terms of reducing the number of Oncomelania snails significantly and cannot effectively prevent the spread of schistosomiasis, posing a significant challenge to schistosomiasis prevention and control. Therefore, there is an urgent need to explore more effective snail control technologies and methods, and technical personnel in related fields have conducted long-term field observations and research. Studies have found that in areas where Oncomelania snails easily grow, such as river and lake beaches, their distribution exhibits certain regularities. They generally grow at a certain elevation above the waterline of the riverbank and are distributed in a zonal pattern. Based on the relationship between snail distribution density and water level elevation, the snail distribution areas can be defined sequentially as upper spiral, dense spiral, and lower spiral. Specifically, snails mainly live in the area between the lower and upper spirals, with the highest distribution density near the dense spiral. In areas below the lower spiral elevation and above the upper spiral elevation, the Oncomelania snail is extremely rare due to environmental factors such as humidity and vegetation not meeting its growth conditions. Therefore, how to propose a practical and feasible snail-suppression scheme targeting this specific distribution pattern to achieve efficient and precise snail suppression is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This application provides a horizontal multi-level layered snail-preventing ecological bank protection system, which aims to solve the problem of unsatisfactory snail control effect in the existing technology.

[0005] To achieve the above objectives, this application proposes a transverse multi-level layered snail-resistant ecological revetment system, which includes: [The system comprises, in a direction away from the river channel, sequentially arranged as follows:]

[0006] The shallow water inactivation zone is located in the area between the lower spiral and the dense spiral, and the shallow water inactivation zone includes a sunken spiral barrier groove.

[0007] The intermediate renovation zone is located between the dense spiral and the upper spiral, and the intermediate renovation zone includes a non-spiral topsoil layer.

[0008] A high-level security zone is set in the area above the spiral, and the high-level security zone is planted with snail-inhibiting plants.

[0009] In some embodiments, the bottom elevation of the snail-blocking ditch is lower than the normal low water level of the river channel.

[0010] In some embodiments, a molluscicide module is provided in the mollusc barrier trench, the molluscicide module is used to release molluscicide, and the release period of the molluscicide is not less than 180 days.

[0011] In some embodiments, the thickness of the non-screw-free topsoil layer is 30–60 cm.

[0012] In some embodiments, a snail-proof geomembrane is further provided on the snail-free soil layer, wherein the pore size of the snail-proof geomembrane does not exceed 2 mm.

[0013] In some embodiments, the snail-free soil layer and the snail-proof geomembrane are laid inclined toward the snail-blocking trench at an angle of 10 to 15°; and a drainage blind trench is also provided in the snail-free soil layer.

[0014] In some embodiments, the high-rise safety zone includes a hardened slope, a pedestrian walkway, and a green isolation belt arranged sequentially in the direction away from the river channel, and the snail-suppressing plants are planted in the green isolation belt.

[0015] In some embodiments, the snail-inhibiting plants include Jatropha curcas, Pterocarya stenoptera, Oleander, Ginger turmeric, Rumex japonicus, Liriope muscari, and Rhizoma Sinensis.

[0016] This application proposes a horizontally multi-level, layered snail-preventing ecological revetment system. This system comprises a shallow-water inactivation zone, a mid-level modification zone, and a high-level safety zone arranged sequentially along the riverbank away from the river channel. The shallow-water inactivation zone is located between the lower and dense snail lines, and includes sunken snail-preventing trenches. The mid-level modification zone is located between the dense and upper snail lines, and includes a layer of snail-free topsoil. The high-level safety zone is located above the upper snail lines and is planted with snail-inhibiting plants. This technical solution sequentially sets up the shallow-water inactivation zone, mid-level modification zone, and high-level safety zone in a direction away from the river channel. Each zone performs a specific snail-preventing function, thus forming a multi-level, three-dimensional control system based on the snail's elevation distribution characteristics, effectively blocking the snail's transmission path and improving the overall control effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of a transverse multi-level layered anti-screw ecological revetment system according to an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] It should also be noted that, unless otherwise stated or limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.

[0022] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0023] See Figure 1As shown, this application proposes a horizontally multi-level, layered snail-blocking ecological bank protection system. This system comprises a shallow-water inactivation zone 10, a mid-water modification zone 20, and a high-level safety zone 30, arranged sequentially along the riverbank at a distance of 100° from the river channel, based on the elevation-snail distribution characteristics of the river. Each zone performs a specific snail-blocking function, forming a multi-level, three-dimensional control system that effectively blocks the snail's transmission path and improves the overall control effect.

[0024] Specifically, the shallow water inactivation zone 10 is located in the area between the lower spiral and dense spiral lines, and includes a sunken snail-blocking trench 11. The trench 11, through its sunken design, forms a physical barrier, effectively blocking the migration path of the Oncomelania snail. Typically, a certain depth of water accumulates within the trench 11. Because Oncomelania snails prefer moist environments but cannot live in deep water, once they enter the trench 11, the limited water depth prevents their survival, achieving the inactivation effect.

[0025] In some embodiments, the bottom elevation of the snail-blocking ditch 11 is lower than the perennial low water level of the river channel 100, so that the water accumulation in the snail-blocking ditch 11 can remain stable based on the infiltration of water in the river channel 100. Generally, the depth of the snail-blocking ditch 11 can ensure that the water in the snail-blocking ditch 11 remains submerged for more than 8 consecutive months, and the width of the snail-blocking ditch 11 is between 0.5 and 5 m.

[0026] Furthermore, a screw-killing module 12 can be further installed in the screw-blocking groove 11, such as... Figure 1 As shown. The molluscicide module 12 is a ceramic module for releasing molluscicides. Molluscicides typically contain chemical components toxic to Oncomelania snails, such as sodium pentachlorophenate and niclosamide. These chemicals can damage the physiological functions of Oncomelania snails, leading to their death. Ceramic materials, such as diatomaceous earth and cordierite, have a porosity of 30%–50% and a specific surface area >50 m² / g, thereby achieving a high loading capacity of 0.5–1.2 g / cm³ for the molluscicide. Furthermore, chemical methods are used to further enhance the elimination effect of Oncomelania snails in the shallow water inactivation zone 10.

[0027] Furthermore, the release cycle of the molluscicide is no less than 180 days, ensuring that the molluscicide module 12 can continuously and stably release the molluscicide, guaranteeing the formation of a certain concentration of effective drug environment within the snail-blocking trench 11, thereby inhibiting the survival and reproduction of Oncomelania snails for a long period of time. Compared with frequent manual harvesting or drug spraying, this can significantly reduce labor costs and intensity. It is worth noting that the rational selection and use of molluscicides can reduce environmental pollution and impacts on non-target organisms, achieving more environmentally friendly Oncomelania snail control.

[0028] See Figure 1As shown, the intermediate layer modification zone 20 is located between the dense spiral lines and the upper spiral lines. The intermediate layer modification zone 20 includes a snail-free topsoil layer 21. The snail-free topsoil layer 21 is created by removing the original contaminated soil layer containing snails or snail eggs and replacing it with clean topsoil free of snails and insect eggs. Through soil replacement, the breeding environment of Oncomelania snails is directly eliminated, thereby blocking the snail's reproductive chain. The thickness of the snail-free topsoil layer 21 is generally controlled between 30 and 60 cm to ensure that there are no residual Oncomelania snails or insect eggs.

[0029] Furthermore, a snail-proof geomembrane 22 is installed on the snail-free soil layer 21, with a pore size not exceeding 2 mm. On the one hand, because the pore size of the geomembrane is much smaller than the size of an adult snail (average field size 8-10 mm), it can directly prevent the snail from burrowing into the soil layer; on the other hand, the geomembrane can reduce water infiltration, maintain the snail-free soil layer 21 as relatively dry (soil moisture ≤ 25%), and disrupt the moist microenvironment required for the survival of the snail.

[0030] The snail-free topsoil layer 21 and the snail-proof geomembrane 22 are laid inclined towards the snail-blocking trench 11. The moderate slope accelerates surface runoff and prevents water from accumulating on the surface of the snail-free topsoil layer 21. The inclination angle is 10-15°, and a drainage blind trench (not shown in the attached diagram) is also dug in the snail-free topsoil layer 21. The drainage blind trench collects water from the surface runoff and directs its discharge, further reducing soil moisture and drying the soil environment. This allows the snails to be exposed, dehydrated, and die, inhibiting the hatching of their eggs.

[0031] See Figure 1 As shown, the high-level safety zone 30 is located above the spiral pattern, and is planted with snail-inhibiting plants. It is understandable that snails are generally less likely to survive in areas above the spiral pattern; planting snail-inhibiting plants can further enhance the control effect.

[0032] In one specific implementation plan, the high-level safety zone 30 includes a hardened revetment 31, a pedestrian walkway 32, and a green isolation belt 33, arranged sequentially in a direction 100 meters away from the river channel. Snail-inhibiting plants are planted within the green isolation belt 33. Thus, the high-level safety zone 30 further constructs the ultimate defense against Oncomelania snail spread through a dual strategy of physical isolation and ecological barriers, its spatial layout following the principle of "100 meters away from the river channel, with progressive buffering." Specifically, the hardened revetment 31 can block the mechanical migration of Oncomelania snails, preventing vehicles / personnel from carrying snails into the safety zone; the pedestrian walkway 32 provides a safe passageway, avoiding direct contact with potentially contaminated areas; and the green isolation belt 33, planted with snail-inhibiting plants, inhibits snail spread through ecological competition. It is worth noting that this green isolation belt 33 is designed to control Oncomelania snails under specific conditions. For example, in the event of flooding, if the water level rises continuously and submerges the pedestrian walkway 32, the snail-inhibiting plants within the green isolation belt 33 will act as an ecological barrier.

[0033] Among them, snail-suppressing plants include Jatropha curcas, Pterocarya stenoptera, Oleander, Ginger turmeric, Rumex japonicus, Liriope muscari, and Sophora japonica.

[0034] In summary, the technical solution of this application establishes multiple snail-suppressing defense lines along the riverbank of river channel 100. The first line of defense is constructed through snail-blocking trenches 11; the second line is constructed through a snail-free topsoil layer 21 and a snail-proof geomembrane 22; and the third line is constructed through snail-suppressing plants. Thus, when the water level of river channel 100 is below the lower snail line, the snail-blocking trenches 11 primarily achieve the elimination and isolation of Oncomelania snails (the control method used for most of the year). When the water level of river channel 100 submerges the snail-blocking trenches 11 and rises to between the dense snail line and the upper snail line, the snail-free topsoil layer 21 and the snail-proof geomembrane 22 provide double barrier protection to prevent snail proliferation. Finally, after the water level continues to rise and submerges the pedestrian walkway 32, the snail-suppressing plants within the green isolation belt 33 act as an ecological barrier.

[0035] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A transverse multi-level layered snail-resistant ecological bank protection system, characterized in that, Including those arranged sequentially along the riverbank in a direction away from the river channel: The shallow water inactivation zone is located in the area between the lower spiral and the dense spiral, and the shallow water inactivation zone includes a sunken spiral barrier groove. The intermediate renovation zone is located between the dense spiral and the upper spiral, and the intermediate renovation zone includes a non-spiral topsoil layer. A high-level security zone is set in the area above the spiral, and the high-level security zone is planted with snail-inhibiting plants.

2. The transverse multi-level layered snail-resistant ecological revetment system according to claim 1, characterized in that, The bottom elevation of the Zhuluogou ditch is lower than the normal low water level of the river.

3. The transverse multi-level layered snail-resistant ecological revetment system according to claim 2, characterized in that, The snail-blocking trench is equipped with a snail-killing module, which is used to release a snail-killing agent, and the release cycle of the snail-killing agent is not less than 180 days.

4. The transverse multi-level layered snail-resistant ecological revetment system according to claim 1, characterized in that, The thickness of the non-screw-free soil layer is 30-60cm.

5. The transverse multi-level layered snail-resistant ecological revetment system according to claim 4, characterized in that, A snail-proof geomembrane is also installed on the snail-free soil layer, and the pore size of the snail-proof geomembrane does not exceed 2mm.

6. The transverse multi-level layered snail-resistant ecological revetment system according to claim 5, characterized in that, The snail-free topsoil layer and the snail-proof geomembrane are laid inclined toward the snail-blocking trench at an angle of 10 to 15°; and a drainage blind trench is also provided in the snail-free topsoil layer.

7. The transverse multi-level layered snail-resistant ecological revetment system according to claim 1, characterized in that, The high-rise safety zone includes a hardened slope, a pedestrian walkway, and a green isolation belt arranged sequentially in the direction away from the river channel, and the snail-inhibiting plants are planted in the green isolation belt.

8. The transverse multi-level layered snail-resistant ecological revetment system according to claim 7, characterized in that, The mollusc-inhibiting plants include Jatropha curcas, Pterocarya stenoptera, Oleander, Ginger turmeric, Rumex japonicus, Liriope muscari, and Rhizoma Sinensis.

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