Erosion gully treatment structure

Abstract

The utility model discloses a treatment structure of an erosion gully, relates to the technical field of ecological treatment, and can solve the problem that farmland resources are occupied by slope cutting treatment of the erosion gully in the prior art. The erosion gully comprises a main gully head, a gully body, a gully tail and a branch gully head, the main gully head, the gully body and the gully tail are sequentially arranged along a development gully line, the branch gully head is formed on the side portion of the gully body, the gully head comprises a gully bottom and gully slopes located on the two sides of the gully bottom, and the treatment structure comprises a main gully head treatment module, a gully body treatment module and a gully tail treatment module. The main ditch head is subjected to slope cutting to form a first filling area, the main ditch head treatment module comprises a first gabion gabion retaining wall covering the first filling area, the top of the first gabion gabion retaining wall is flush with the ground, a second filling area is excavated at the ditch bottom, and the ditch body treatment module comprises a soil fixing module filled in the second filling area. The top of the soil fixing module extends out of the second filling area and covers the ditch slope, and the ditch tail treatment module comprises a second gabion gabion retaining wall arranged at the adjacent position of the ditch body and the ditch tail.

Description

Technical Field

[0001] The present application relates to the field of ecological management technology, and in particular to a management structure for erosion gullies. Background Art

[0002] The formation of erosion gullies is mainly caused by the continuous scouring of the soil surface by water flow, especially during snowmelt or rainfall, when water flows along the soil surface, due to the inclination of the terrain and the instability of the surface, it is easy to form channels. These channels continue to develop and expand over time, forming an erosion gully system including the main gully head, gully body, gully tail and branch gully head. The main gully head is the starting point of the gully development, usually located at a higher terrain, while the gully body extends downward along the terrain to the gully tail; the branch gully head is usually formed on the side of the gully body. These channels not only change the natural terrain and reduce the utilization value of the land, but may also cause serious ecological problems, such as soil loss and changes in groundwater levels, affecting agricultural production and ecological balance.

[0003] In the prior art, the common method of treating gully erosion includes cutting the gully slope to reduce the slope of the gully to reduce the impact of water flow and promote vegetation recovery. However, this method usually requires expansion to the farmland on both sides, thereby occupying valuable arable land resources. This occupation of farmland is often strongly opposed by farmers. Utility Model Content

[0004] To this end, the present application provides a gully erosion management structure to solve the problem of gully erosion management by slope cutting occupying arable land resources in the prior art.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A management structure for an erosion gully, the erosion gully comprising a main gully head, a gully body, a gully tail and a branch gully head, the main gully head, the gully body and the gully tail being arranged in sequence along a development gully line, the branch gully head being formed on the side of the gully body, the gully head comprising a gully bottom and gully slopes on both sides of the gully bottom, the management structure comprising a main gully head management module, a gully body management module and a gully tail management module, the main gully head being formed with a first filling area by cutting the slope along the development gully line, the main gully head management module comprising a first gabion gabion retaining wall covering the first filling area, the top of the first gabion gabion retaining wall being flush with the ground, a second filling area being excavated at the gully bottom, the gully body management module comprising a soil consolidation module filled in the second filling area and used for reducing water scouring, the top of the soil consolidation module extending out of the second filling area and covering the gully slope, the gully tail management module comprising a second gabion gabion retaining wall arranged adjacent to the gully body and the gully tail.

[0007] Optionally, the main ditch head management module also includes a first willow pile combination connected to the main ditch head and used to reinforce the first gabion gabion retaining wall and the main ditch head, the first filling area includes a first sub-filling area located at one end of the development ditch line and a second sub-filling area located between the first sub-filling area and the second filling area, the first sub-filling area includes a stone filling area located at one end of the development ditch line and a spacing area between the stone filling area and the second sub-filling area, the first gabion gabion retaining wall is filled in the stone filling area, and the first willow pile combination includes a coarse willow pile combination arranged in the spacing area and a thin willow pile combination arranged in the second sub-filling area.

[0008] Optionally, the thick willow pile combination includes multiple rows of thick willow piles, each row of thick willow piles has a plurality of thick willow piles arranged at intervals, one end of the thick willow piles is inserted into the ground, and the other end extends out of the ground; a row of thick willow piles close to the stone filling area is arranged at the junction of the stone filling area and the spacing area, and is used to limit the sliding of the first stone cage gabion retaining wall toward the second sub-filling area; the thin willow pile combination includes multiple rows of thin willow piles, each row of thin willow piles has a plurality of thin willow piles arranged at intervals, one end of the thin willow piles is inserted into the ground, and the other end extends out of the ground.

[0009] Optionally, each row of thick willow piles is extended in an arc shape, the spacing between adjacent thick willow piles is 5-10cm, the diameter of the thick willow piles is greater than 8cm, the spacing between two adjacent rows of thick willow piles is 30-50cm, and the distance embedded in the ground is 60cm; each row of thin willow piles is extended in an arc shape, the spacing between adjacent thin willow piles is 5-10cm, the diameter of the thin willow piles is greater than 2cm, and the spacing between two adjacent rows of thin willow piles is 30-50cm; the first gabion gabion retaining wall includes a plurality of gabion nets and stones installed in the gabion nets, the mesh size of the gabion nets is greater than or equal to 5*5cm, and the diameter of the stones is 15-25cm.

[0010] Optionally, the second filling area is a rectangular trench, and the soil consolidation module includes a plurality of drainage pipes laid on the bottom of the rectangular trench, straw bales laid on the top of the plurality of drainage pipes, a backfill soil layer buried on the top of the plurality of straw bales, and a covering slope covering the trench slope, the plurality of drainage pipes are arranged at intervals along the length extension direction of the development trench line, the outer peripheral wall of the drainage pipe is provided with a plurality of drainage holes, and the outer side of the drainage pipe is wrapped with geotextile, the top of the backfill soil layer is located on the trench slope, and the bottom of the covering slope is against the top of the backfill soil layer.

[0011] Optionally, the drainage pipe is a threaded pipe with a diameter of 20 cm, the straw bale is a rectangular parallelepiped or a cylinder, and the density of the straw bale is greater than 230 kg / m 3The thickness of the backfill soil layer is 50 cm, the vertical distance between the top of the backfill soil layer and the ground is 1.5 m, and the angle between the covering slope and the horizontal plane is less than 35°.

[0012] Optionally, a groove connecting the rectangular groove and used to arrange the second gabion gabion retaining wall is opened at the end of the ditch, one side of the second gabion gabion retaining wall is against the straw bale and the backfill soil layer, the drainage pipe extends to the interior of the second gabion gabion retaining wall, the top of the second gabion gabion retaining wall is higher than the backfill soil layer, a plurality of steps are formed on the side of the second gabion gabion retaining wall away from the backfill soil layer, and an overflow trough is formed on the top of the second gabion gabion retaining wall.

[0013] Optionally, the second gabion gabion retaining wall includes a plurality of gabion nets and stones installed in the gabion nets, the mesh size of the gabion nets is greater than or equal to 5*5cm, and the diameter of the stones is 15-25cm; the width of the step is 40cm, and the bottom of the overflow trough is 30cm away from the top of the backfill soil layer; a geotextile is laid on the side of the ditch tail away from the second gabion gabion retaining wall, and a plurality of gabions are laid on the top of the geotextile; an energy dissipation trough is opened at the bottom of the ditch tail close to the second gabion gabion retaining wall.

[0014] Optionally, a second willow stake combination is arranged on the top of the backfill soil layer, the second willow stake combination includes a plurality of thin willow stakes, the spacing between two adjacent thin willow stakes is 20-30cm, and the diameter of the thin willow stakes is greater than 2cm; the surface layer of the covering slope is arranged with a shrub layer.

[0015] Optionally, a covering soil layer is laid at the head of the branch ditch, and a third willow stake combination is arranged on the top of the covering soil layer, and the third willow stake combination includes a plurality of thin willow stakes or a plurality of thick willow stakes.

[0016] Optionally, a 20 cm high earth ridge is arranged along the main ditch head, the ditch body and the branch ditch head of the erosion ditch. The earth ridge and the first gabion retaining wall form a closed loop, and part of the first gabion retaining wall is located on the side of the earth ridge away from the ditch body.

[0017] Compared with the prior art, this application has at least the following beneficial effects:

[0018] The first gabion gabion retaining wall is constructed in the first filling area of ​​the main ditch head. This area is formed by the slope cutting method, and there is no need to expand the original ditch. The top of the retaining wall is flush with the ground, which can prevent the water flow from directly scouring the ditch head and reduce the erosion of the ditch head. Then, the second filling area at the bottom of the ditch is filled with soil consolidation modules to slow down the water flow speed, thereby reducing the direct scouring of the ditch bottom by the water flow. In addition, the top of the soil consolidation module extends out of the second filling area and covers the ditch slope, reducing the height of the ditch slope, further stabilizing the ditch slope and preventing lateral erosion. Finally, the second gabion gabion retaining wall is set at a position adjacent to the ditch tail and the ditch body to intercept the sediment brought by the water flow, prevent these sediments from flowing into the downstream ditch tail, and avoid soil and water loss at the main ditch head and ditch body. In this way, not only the existing technical means of expanding the erosion ditch and protecting the cultivated land are solved, but also the structural strength and environmental adaptability of the erosion ditch are improved, and the erosion effect of the water flow on the erosion ditch is effectively controlled and reduced without destroying the original terrain and ecology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0020] Figure 1 A schematic top view of an erosion gully provided in one embodiment of the present application;

[0021] Figure 2 A top view of the overall structure of an erosion gully management structure provided by one embodiment of the present application;

[0022] Figure 3 A partial structural schematic diagram of a main ditch head management module of an erosion ditch management structure provided in one embodiment of the present application;

[0023] Figure 4 A schematic structural diagram of a main ditch head management module of an erosion ditch management structure provided in one embodiment of the present application;

[0024] Figure 5 for Figure 4 A top view of

[0025] Figure 6 A schematic diagram of a trench body of an erosion trench provided in one embodiment of the present application;

[0026] Figure 7A schematic diagram of a partial structure of a ditch body management module of an erosion ditch management structure provided in one embodiment of the present application;

[0027] Figure 8 A schematic diagram of the structure of a ditch body management module of a ditch erosion management structure provided in one embodiment of the present application;

[0028] Fig. 9 A schematic diagram of the structure of a drainage pipe of a ditch body management module of an erosion ditch management structure provided by one embodiment of the present application;

[0029] Fig.10 for Figure 8 A top view of

[0030] Fig.11 A top view of a ditch tail treatment module of an erosion ditch treatment structure provided by one embodiment of the present application;

[0031] Fig.12 for Fig.11 Side view of.

[0032] Description of reference numerals:

[0033] 1. Main ditch head; 2. Ditch body; 21. Ditch bottom; 22. Ditch slope; 3. Ditch tail; 4. Branch ditch head; 41. Overburden; 5. Development ditch line; 6. Ditch bank; 7. Main ditch head treatment module; 71. First filling area; 711. Stone filling area; 712. Interval area; 713. Second sub-filling area; 72. First stone cage gabion retaining wall; 73. First willow pile combination; 731. Coarse willow pile combination; 731a. Coarse willow pile; 73 2. Combination of fine willow piles; 732a, fine willow piles; 8. Ditch body management module; 81. Second filling area; 82. Soil consolidation module; 821. Drain pipe; 8211. Drain hole; 822. Straw bale; 823. Backfill soil layer; 824. Covering slope; 9. Ditch tail management module; 91. Second gabion retaining wall; 911. Overflow trough; 912. Steps; 92. Geotextile; 921. Energy dissipation trough; 10. Earth ridge. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to refer to the objects of the modules, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasis on importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0036] refer to Figure 1-12 The present application discloses a governance structure for an erosion gully, wherein the erosion gully comprises a main gully head 1, a gully body 2, a gully tail 3 and a branch gully head 4, wherein the main gully head 1, the gully body 2 and the gully tail 3 are arranged in sequence along a development gully line 5, and the branch gully head 4 is formed on the side of the gully body 2, and the gully head comprises a gully bottom 21 and gully slopes 22 located on both sides of the gully bottom 21, and the governance structure comprises a main gully head governance module 7, a gully body governance module 8 and a gully tail governance module 9, wherein the main gully head 1 is sloped along the development gully line 5 to form a first filling area 71, and the main gully head governance module 9 is provided with ... The management module 7 includes a first gabion gabion retaining wall 72 covering the first filling area 71, the top of the first gabion gabion retaining wall 72 is flush with the ground, a second filling area 81 is excavated at the ditch bottom 21, the ditch body management module 8 includes a soil consolidation module 82 filled in the second filling area 81 and used to reduce water erosion, the top of the soil consolidation module 82 extends out of the second filling area 81 and covers the ditch slope 22, and the ditch tail management module 9 includes a second gabion gabion retaining wall 91 arranged adjacent to the ditch body 2 and the ditch tail 3.

[0037] The first gabion retaining wall 72 is constructed in the first filling area 71 of the main ditch head 1. This area is formed by cutting the slope, and there is no need to expand the original ditch. The top of the retaining wall is flush with the ground, which can prevent the water flow from directly scouring the ditch head and reduce the erosion of the ditch head. Then, the second filling area 81 of the ditch bottom 21 is filled with soil consolidation modules 82 to slow down the water flow speed, thereby reducing the direct scouring of the ditch bottom 21 by the water flow. In addition, the top of the soil consolidation module 82 extends out of the second filling area 81 and covers the ditch slope 22, reducing the height of the ditch slope 22, further stabilizing the ditch slope 22 and preventing lateral erosion. Finally, the second gabion retaining wall 91 is set at a position adjacent to the ditch tail 3 and the ditch body 2 to intercept the sediment brought by the water flow, prevent these sediments from flowing into the downstream ditch tail 3, and avoid soil and water loss in the main ditch head 1 and the ditch body 2. In this way, not only the existing technical means of expanding the gully and protecting cultivated land are solved, but also the structural strength and environmental adaptability of the gully are improved, and the erosion effect of water flow on the gully is effectively controlled and reduced without destroying the original terrain and ecology.

[0038] Among them, the development gully line 5 is a virtual line, which extends along the length direction of the erosion gully and represents the main development trajectory of the erosion gully on the terrain.

[0039] refer to Figure 1-5The main ditch head management module 7 also includes a first willow pile combination 73 connected to the main ditch head 1 and used to reinforce the first gabion gabion retaining wall 72 and the main ditch head 1. The first filling area 71 includes a first sub-filling area located at one end of the development ditch line 5 and a second sub-filling area 713 located between the first sub-filling area and the second filling area 81. The first sub-filling area includes a stone filling area 711 located at one end of the development ditch line 5 and a spacing area 712 located between the stone filling area 711 and the second sub-filling area 713. The first gabion gabion retaining wall 72 is filled in the stone filling area 711. The first willow pile combination 73 includes a thick willow pile combination 731 arranged in the spacing area 712 and a thin willow pile combination 732 arranged in the second sub-filling area 713.

[0040] In the main ditch head treatment module 7, the first gabion retaining wall 72 and the first willow pile combination 73 play a reinforcing role together. Due to the scouring effect, the end of the main ditch head 1 is slightly lower than the terrain on both sides and is concave. The angle between the slope cut along the development ditch line 5 and the horizontal plane is less than 35°. The first gabion gabion retaining wall 72 is filled in the stone filling area 711 formed by the slope cut. This area is close to one end of the development ditch line 5. The gabion structure provides a physical barrier, which can effectively resist the direct water flow impact from the upstream. In addition, the porous nature of the gabion retaining wall also contributes to the natural filtration and penetration of the water flow, preventing the water flow from being too fast and causing the erosion of the downstream area to intensify.

[0041] The first willow stake combination 73 utilizes the biological characteristics of willow trees (i.e., forming willow waterfalls) to enhance the ecological protection capability of the ditch head. The thick willow stake combination 731 arranged in the spacing area 712 and the thin willow stake combination 732 arranged in the second sub-filling area 713 together form a plant protection system from coarse to fine. The thick willow stake 731a, due to its larger diameter, can provide a stronger soil anchoring force and initial water flow barrier, while the thin willow stakes 732a are densely arranged, which helps to capture fine soil particles and organic matter carried in the water flow, thereby promoting the self-recovery and stability of the ecosystem in this area.

[0042] Among them, willow waterfall is an ecological engineering technology that uses the biological characteristics of willows to slow down water flow and prevent soil erosion. The thick willow stakes 731a and thin willow stakes 732a involved in this application can quickly take root and sprout near the water or in moist soil.

[0043] The thick willow pile combination 731 includes multiple rows of thick willow piles 731a, each row of thick willow piles 731a has multiple thick willow piles 731a arranged at intervals, one end of the thick willow pile 731a is inserted into the ground, and the other end extends out of the ground. A row of thick willow piles 731a close to the stone filling area 711 is arranged at the junction of the stone filling area 711 and the spacing area 712, and is used to limit the first stone cage gabion retaining wall 72 from sliding toward the second sub-filling area 713. The thin willow pile combination 732 includes multiple rows of thin willow piles 732a, each row of thin willow piles 732a has multiple thin willow piles 732a arranged at intervals, one end of the thin willow pile 732a is inserted into the ground, and the other end extends out of the ground.

[0044] The thick willow piles 731a are mainly arranged at the junction of the stone filling area 711 and the spacing area 712. This layout utilizes the strong structural strength and good anchoring ability of the thick willow piles 731a to effectively limit the sliding of the first gabion gabion retaining wall 72 to the second sub-filling area 713, thereby enhancing the stability of the entire governance structure. The thin willow piles 732a are mainly distributed in the second sub-filling area 713, and are arranged in multiple rows to form a dense array of willow piles.

[0045] Each row of thick willow piles 731a is arranged in an arc shape, the spacing between adjacent thick willow piles 731a is 5-10cm, the diameter of the thick willow piles 731a is greater than 8cm, the spacing between two adjacent rows of thick willow piles 731a is 30-50cm, and the distance embedded in the ground is 60cm; each row of thin willow piles 732a is arranged in an arc shape, the spacing between adjacent thin willow piles 732a is 5-10cm, the diameter of the thin willow piles 732a is greater than 2cm, and the spacing between two adjacent rows of thin willow piles 732a is 30-50cm; the first gabion gabion retaining wall 72 includes a plurality of gabion nets and stones installed in the gabion nets, the mesh size of the gabion nets is greater than or equal to 5*5cm, and the diameter of the stones is 15-25cm.

[0046] The first gabion retaining wall 72 ensures that the retaining wall has sufficient water permeability and filtering capacity while maintaining the firmness of the structure. This gabion structure not only resists the impact of upstream water flow, but also effectively filters the carried silt and prevents the accumulation of such silt in the channel. The first gabion retaining wall 72 is formed by stacking and connecting a plurality of gabion nets filled with stones.

[0047] Among them, the width of each row of thick willow piles 731a is about 2m.

[0048] refer to Figure 6-10The second filling area 81 is a rectangular trench. The soil consolidation module 82 includes a plurality of drainage pipes 821 laid on the bottom of the rectangular trench, straw bales 822 laid on the top of the plurality of drainage pipes 821, a backfill soil layer 823 buried on the top of the plurality of straw bales 822, and a covering slope 824 covering the trench slope 22. The plurality of drainage pipes 821 are arranged at intervals along the length extension direction of the development trench line 5. The outer peripheral wall of the drainage pipe 821 is provided with a plurality of drainage holes 8211, and the outer side of the drainage pipe 821 is wrapped with a geotextile 92. The top of the backfill soil layer 823 is located on the trench slope 22, and the bottom of the covering slope 824 is against the top of the backfill soil layer 823.

[0049] In the soil consolidation module 82 of the present application, the drainage pipe 821, the straw bale 822, the backfill soil layer 823 and the covering slope 824 work together in the rectangular trench to form a comprehensive water and soil management and soil stabilization system. First, a plurality of drainage pipes 821 are arranged at intervals along the length direction of the development ditch line 5, and the outer peripheral wall thereof is provided with a plurality of drainage holes 8211, and the outer side is wrapped with a geotextile 92. Such a design enables the water flow to be discharged smoothly from the soil, and at the same time filters out most of the suspended soil particles, thereby reducing the scouring of the soil at the bottom of the ditch 21.

[0050] Secondly, the straw bundle 822 on the top of the drainage pipe 821 acts as a natural water absorber and filter layer, which can temporarily store and slowly release the water flow brought by rainfall. At the same time, its structure can prevent direct loss of soil and increase water permeability and water retention. This not only helps to stabilize the structure of the ditch bottom 21, but also provides a living environment for microorganisms, thereby improving the ecological function of the soil.

[0051] Next, the backfill soil layer 823 is filled on top of the multiple straw bales 822 and extends to the trench slope 22. This can effectively utilize the excavated soil (soil excavated from the rectangular trench) and lower the height of the trench slope 22, thereby reducing soil sliding and erosion caused by gravity and water flow.

[0052] Finally, the covering slope 824 (which can also be made of soil excavated from the rectangular trench) covers the upper layer of the trench slope 22 and rests against the top of the backfill soil layer 823, thereby increasing the stability of the slope by reducing the overall slope.

[0053] The drainage pipe 821 is a threaded pipe with a diameter of 20 cm, the straw bale 822 is a rectangular parallelepiped or a cylinder, the density of the straw bale 822 is greater than 230 kg / m3, the thickness of the backfill layer 823 is 50 cm, the vertical distance between the top of the backfill layer 823 and the ground is 1.5 m, and the angle between the covering slope 824 and the horizontal plane is less than 35°.

[0054] The threaded pipe has sufficient strength to prevent the pipe wall from deforming under soil pressure and external force. The straw bale 822 can be collected and compressed by a straw baler (baler), and then tied with special binding wires or nets to finally form a rectangular parallelepiped or cylinder. Multiple straw bales 822 are stacked in a rectangular groove, and the stacking height can be determined according to the actual situation on site.

[0055] refer to Figure 11-12 A connecting rectangular groove is opened at the ditch tail 3 and is used to arrange the cutting groove of the second gabion retaining wall 91. One side of the second gabion gabion retaining wall 91 is against the straw bale 822 and the backfill soil layer 823. The drainage pipe 821 extends to the inside of the second gabion gabion retaining wall 91. The top of the second gabion gabion retaining wall 91 is higher than the backfill soil layer 823. A plurality of steps 912 are formed on the side of the second gabion gabion retaining wall 91 away from the backfill soil layer 823, and an overflow trough 911 is formed on the top of the second gabion gabion retaining wall 91.

[0056] The drainage pipe 821 extends to the interior of the second gabion retaining wall 91, allowing the upstream water flow to be directly transported to the retaining wall area. This design allows the water flow to be filtered and buffered by the gabion retaining wall before entering the ditch tail 3. The stone filled in the gabion retaining wall can intercept larger suspended matter and some sediment, reducing the impact of these substances on the downstream ditch tail 3 and the ecosystem.

[0057] The overflow trough 911 set on the top of the second gabion retaining wall 91 plays a key role. It allows an additional water flow release path in large flow events, thereby protecting the ditch bottom 21 and ditch bank 6 behind the retaining wall from scouring. The design of the overflow trough 911 ensures that the water flow can transition smoothly when overflowing, reducing the impact on the downstream ditch tail 3.

[0058] In addition, the multiple steps 912 formed on one side of the second gabion retaining wall 91 away from the backfill soil layer 823 increase the physical stability and lateral pressure resistance of the structure. These step 912 structures help to disperse the direct impact force of the water flow on the retaining wall.

[0059] The second gabion retaining wall 91 includes multiple gabion nets and stones installed in the gabion nets. The mesh size of the gabion nets is greater than or equal to 5*5cm, and the diameter of the stones is 15-25cm; the width of the step 912 is 40cm, and the bottom of the overflow trough 911 is 30cm away from the top of the backfill soil layer 823; a geotextile 92 is laid on the side of the ditch tail 3 away from the second gabion gabion retaining wall 91, and multiple gabions are laid on the top of the geotextile 92; an energy dissipation trough 921 is opened at the bottom of the ditch tail 3 near the second gabion gabion retaining wall 91.

[0060] A geotextile is provided inside the water-facing surface (the side close to the backfill soil layer 823) of the second gabion retaining wall 91 to further prevent the loss of sediment.

[0061] The side of the ditch tail 3 away from the second gabion retaining wall 91 is covered with geotextile 92 and gabions to form a slope protection of a certain length (about 10m long), which not only further enhances the stability of the structure, but also prevents the loss of fine particles through the filtering effect of the geotextile 92, thereby protecting the soil structure of the ditch tail 3.

[0062] In addition, the energy dissipation trough 921 opened at the bottom of the ditch tail 3 near the second gabion retaining wall 91 plays a key role. This trough is designed to receive and temporarily store the water discharged from the ditch body 2. Through the optimization of its structure, the water flow speed is slowed down, the effective energy dissipation of the water flow is achieved, and the direct scouring of the water flow in the ditch tail 3 area is prevented, reducing the potential damage to the ditch tail 3 and the downstream ecosystem.

[0063] The ditch bank 6 of the erosion ditch is arranged with a 20 cm high earth ridge 10 along the main ditch head 1, the ditch body 2, and the branch ditch head 4. The earth ridge 10 and the first gabion retaining wall 72 form a closed loop (the two ends of the earth ridge 10 extend to the two ends of the first gabion retaining wall 72), and part of the first gabion retaining wall 72 is located on the side of the earth ridge 10 away from the ditch body 2.

[0064] A 20 cm high earth ridge 10 (the soil from the excavated rectangular trench can be used) is built along the gully bank 6 of the erosion gully. This earth ridge 10 acts as a physical barrier, effectively blocking the runoff in the cultivated land above the gully bank 6 on both sides from directly entering the erosion gully, thereby reducing the scouring of the gully bank 6 and the gully slope 22.

[0065] In addition, the runoff near the ditch head first passes through the energy dissipation zone formed by the gabion and willow waterfall. The gabion retaining wall and willow waterfall structure here work together to slow down the water flow, thereby effectively reducing the kinetic energy of the water flow and preventing erosion downstream. Subsequently, the runoff enters the soil consolidation module 82 to further slow down and filter the runoff.

[0066] Finally, the purified and impact-mitigated water is collected through spiral pipes and discharged from the ditch in the form of underground runoff, greatly reducing erosion and soil loss that may be caused by surface runoff.

[0067] In some other embodiments, the top of the first gabion retaining wall 72 may form an inner concave surface toward the middle, and the inner concave surface extends along the development ditch line 5 to facilitate water to gather toward the inner concave surface.

[0068] A second willow stake combination is arranged on the top of the backfill soil layer 823, and the second willow stake combination includes multiple thin willow stakes 732a. The spacing between two adjacent thin willow stakes 732a is 20-30cm, and the diameter of the thin willow stakes 732a is greater than 2cm; the surface layer of the covering slope 824 is arranged with a shrub layer.

[0069] The second willow pile combination and the shrub layer on the soil covering slope 824 together provide a composite ecological protection and soil fixation system. The second willow pile combination is composed of a plurality of thin willow piles 732a, which are sparsely arranged at intervals of 20-30 cm and have a diameter greater than 2 cm. This arrangement allows the willow piles to quickly take root in the soil, forming a dense root network, and their roots will further expand and reinforce the soil structure, enhancing the overall stability of the channel.

[0070] This method of combining willow stakes and shrub layers not only optimizes soil and water conservation effects, but also enhances the ecological diversity and aesthetics of the ditch.

[0071] The branch ditch head 4 is paved with a covering soil layer 41, and a third willow pile combination is arranged on the top of the covering soil layer 41, and the third willow pile combination includes multiple thin willow piles 732a or multiple thick willow piles 731a. During the treatment process, the branch ditch head 4 can also adopt the slope cutting method of the main ditch head 1, cut the slope to less than 35°, and then backfill the soil excavated from the rectangular ditch to form a covering soil layer 41, and then the covering soil layer 41 is treated with soil consolidation by the third willow pile combination (similar to the first willow pile combination 73).

[0072] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0073] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A gully management structure, wherein the gully comprises a main gully head, a gully body, a gully tail and a branch gully head, wherein the main gully head, the gully body and the gully tail are arranged in sequence along a development gully line, the branch gully head is formed on the side of the gully body, and the gully head comprises a gully bottom and gully slopes located on both sides of the gully bottom, characterized in that: The management structure includes a main ditch head management module, a ditch body management module and a ditch tail management module. The main ditch head is formed with a first filling area by cutting the slope along the development ditch line. The main ditch head management module includes a first gabion retaining wall covering the first filling area, and the top of the first gabion retaining wall is flush with the ground. A second filling area is excavated at the bottom of the ditch. The ditch body management module includes a soil fixing module filled in the second filling area and used to reduce water scouring, and the top of the soil fixing module extends out of the second filling area and covers the ditch slope. The ditch tail management module includes a second gabion retaining wall arranged adjacent to the ditch body and the ditch tail.

2. The governance structure according to claim 1, characterized in that: The main ditch head management module also includes a first willow pile combination connected to the main ditch head and used to reinforce the first gabion gabion retaining wall and the main ditch head, the first filling area includes a first sub-filling area located at one end of the development ditch line and a second sub-filling area located between the first sub-filling area and the second filling area, the first sub-filling area includes a stone filling area located at one end of the development ditch line and a spacing area between the stone filling area and the second sub-filling area, the first gabion gabion retaining wall is filled in the stone filling area, and the first willow pile combination includes a coarse willow pile combination arranged in the spacing area and a thin willow pile combination arranged in the second sub-filling area.

3. The governance structure according to claim 2, characterized in that: The thick willow pile combination includes multiple rows of thick willow piles, each row of thick willow piles has multiple thick willow piles arranged at intervals, one end of the thick willow piles is inserted into the ground, and the other end extends out of the ground. A row of thick willow piles close to the stone filling area is arranged at the junction of the stone filling area and the spacing area, and is used to limit the first stone cage gabion retaining wall from sliding toward the second sub-filling area. The thin willow pile combination includes multiple rows of thin willow piles, each row of thin willow piles has multiple thin willow piles arranged at intervals, one end of the thin willow piles is inserted into the ground, and the other end extends out of the ground.

4. The governance structure according to claim 3, characterized in that: Each row of thick willow piles is extended in an arc shape, the spacing between adjacent thick willow piles is 5-10cm, the diameter of the thick willow piles is greater than 8cm, the spacing between two adjacent rows of thick willow piles is 30-50cm, and the distance embedded in the ground is 60cm; each row of thin willow piles is extended in an arc shape, the spacing between adjacent thin willow piles is 5-10cm, the diameter of the thin willow piles is greater than 2cm, and the spacing between two adjacent rows of thin willow piles is 30-50cm; the first gabion gabion retaining wall includes a plurality of gabion nets and stones installed in the gabion nets, the mesh size of the gabion nets is greater than or equal to 5*5cm, and the diameter of the stones is 15-25cm.

5. The governance structure according to claim 1, characterized in that: The second filling area is a rectangular trench, and the soil consolidation module includes a plurality of drainage pipes laid on the bottom of the rectangular trench, straw bales laid on the top of the plurality of drainage pipes, a backfill soil layer buried on the top of the plurality of straw bales, and a covering slope covering the trench slope. The plurality of drainage pipes are arranged at intervals along the length extension direction of the development trench line, a plurality of drainage holes are opened on the outer peripheral wall of the drainage pipe, and the outer side of the drainage pipe is wrapped with geotextile, the top of the backfill soil layer is located on the trench slope, and the bottom of the covering slope is against the top of the backfill soil layer.

6. The governance structure according to claim 5, characterized in that: The drainage pipe is a threaded pipe with a diameter of 20 cm, the straw bale is a rectangular parallelepiped or a cylinder, and the density of the straw bale is greater than 230 kg / m 3 The thickness of the backfill soil layer is 50 cm, the vertical distance between the top of the backfill soil layer and the ground is 1.5 m, and the angle between the covering slope and the horizontal plane is less than 35°.

7. The governance structure according to claim 5, characterized in that: A groove is formed at the end of the ditch, which is connected to the rectangular ditch and is used to arrange the second gabion gabion retaining wall. One side of the second gabion gabion retaining wall is against the straw bale and the backfill soil layer. The drainage pipe extends to the interior of the second gabion gabion retaining wall. The top of the second gabion gabion retaining wall is higher than the backfill soil layer. A plurality of steps are formed on the side of the second gabion gabion retaining wall away from the backfill soil layer. An overflow trough is formed on the top of the second gabion gabion retaining wall.

8. The governance structure according to claim 7, characterized in that: The second gabion gabion retaining wall comprises a plurality of gabion meshes and stones installed in the gabion meshes, the mesh size of the gabion meshes is greater than or equal to 5*5cm, and the diameter of the stones is 15-25cm; the width of the steps is 40cm, and the bottom of the overflow trough is 30cm away from the top of the backfill soil layer; a geotextile is laid on the side of the ditch tail away from the second gabion gabion retaining wall, and a plurality of gabions are laid on the top of the geotextile; an energy dissipation trough is opened at the bottom of the ditch tail close to the second gabion gabion retaining wall.

9. The governance structure according to claim 5, characterized in that: A second willow stake combination is arranged on the top of the backfill soil layer. The second willow stake combination includes a plurality of thin willow stakes. The spacing between two adjacent thin willow stakes is 20-30cm, and the diameter of the thin willow stakes is greater than 2cm. A shrub layer is arranged on the surface of the covering slope.

10. The governance structure of claim 1, wherein: The branch ditch head is paved with a covering soil layer, and a third willow stake combination is arranged on the top of the covering soil layer. The third willow stake combination includes a plurality of thin willow stakes or a plurality of thick willow stakes.

11. The governance structure of claim 1, wherein: The banks of the erosion gully are provided with earth ridges with a height of 20 cm along the main gully head, the gully body and the branch gully head. The earth ridges and the first gabion retaining wall form a closed loop, and part of the first gabion retaining wall is located on the side of the earth ridge away from the gully body.

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