Composite slope protection structure for channel
By designing a composite slope protection structure in the channel, combining geomaterials and ecological bags, and using agricultural straw and silt for water quality purification, the problems of environmental damage and silt disposal by traditional slope protection structures are solved, and protection, purification and ecological functions are achieved. , reducing costs and pollution.
Patent Information
- Application Number
- CN202421172716.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The traditional channel slope protection structure has environmental damage problems in preventing water flow erosion and erosion, and it is difficult to achieve a win-win situation between economic and environmental protection.
Using a composite slope protection structure, combining geotechnical engineering and environmental engineering, through the design of stacked sections, gentle slope sections and hydrophilic sections, geococonut mesh, pine piles, gabion ecological bags and gabion structures, combining agricultural straw and dredged silt Recycling and utilization to achieve water quality purification and ecological functions.
It reduces the ground runoff flow rate, purifies water quality, improves the circulation of channel water bodies and slope groundwater, reduces the risk of erosion, provides a habitat for terrestrial, aquatic and amphibians, and reduces engineering costs and environmental pollution.
Smart Images
Figure CN222349583U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of channel construction, in particular to a composite slope protection structure used for channels. Background Art
[0002] In order to prevent water from scouring and eroding the channel bank, reduce the damage of surface runoff to the bank slope and maintain its stability, domestic channels generally adopt traditional hard paved bank protection structures, such as mortar-laid stone or dry-laid block stone slope protection, cast-in-place (precast) concrete block slope protection, etc. The traditional method mainly emphasizes the realization of its function, but often ignores the damage to the environment.
[0003] In addition, the current water environment management issues are attracting more and more attention from the society. Usually after channel dredging, the disposal and utilization of silt is also a thorny problem. The conventional method is just to landfill after solidification, which is not only costly but also pollutes the environment, facing a lose-lose situation in both economy and environment.
[0004] Therefore, it is urgent to find a slope protection method that takes into account both protection and the environment. Utility Model Content
[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and provide a composite slope protection structure for a channel, which can reduce the velocity of surface runoff, purify surface runoff and improve channel water quality while meeting the protection function by organically combining geotechnical engineering and environmental engineering; and ensure the normal circulation between the channel water body and the groundwater in the slope; by recycling agricultural straw and dredged sludge, it can avoid the environmental pollution problems of straw burning and dredged sludge stacking and reduce the engineering cost; at the same time, it takes into account the growth of terrestrial, aquatic and amphibian animals and plants, purifies and improves the channel water quality, and realizes ecological and landscape functions.
[0006] The utility model provides a composite slope protection structure for a channel, comprising a slope body, wherein a gentle slope section, an intercepting ditch, a stacking section and a hydrophilic section are arranged in sequence along the slope from high to low, the gentle slope section is a backfill soil layer arranged from the top of the slope downward, the intercepting ditch is a gabion ecological stone cage structure ditch, flood discharge outlets are arranged at intervals on the ditch wall on the channel side of the intercepting ditch, and the hydrophilic section is a groove of the gabion ecological stone cage structure.
[0007] In the above technical scheme, the stacking section is a multi-level sloped structure located between the intercepting ditch and the hydrophilic section, the stacking section includes a backfill soil layer located at the bottom, each level of the stacking section includes a geo-coconut net located at the top of the backfill soil layer, the top surface of the geo-coconut net is provided with multiple sections of gabion eco-bags, the gabion eco-bags are provided with pine piles at intervals along the length direction of the stacking section, the pine piles pass through the gabion eco-bags and the geo-coconut net in turn and enter the backfill soil layer, the gabion eco-bags are provided with gabion eco-gabion walls on the channel side, and each level of the gabion eco-gabion walls is provided with flood discharge outlets.
[0008] In the above technical solution, there are multiple flood discharge outlets arranged on each level of the gabion ecological gabion wall, the multiple flood discharge outlets on the gabion ecological gabion wall are arranged at intervals, and the flood discharge outlets on two adjacent levels of the gabion ecological gabion walls are arranged in a staggered manner.
[0009] In the above technical solution, there are multiple flood discharge outlets on the intercepting ditch wall, and the multiple flood discharge outlets on the intercepting ditch wall are arranged at intervals. The flood discharge outlets on the uppermost level gabion ecological stone cage wall and the flood discharge outlets on the intercepting ditch wall are staggered.
[0010] In the above technical solution, each section of the gabion eco-bag is an eco-bag installed in a gabion net, and each section of the gabion eco-bag and a corresponding section of the gabion eco-stone cage wall share the same gabion net.
[0011] In the above technical solution, an underwater ecological bag below the normal water level is provided in the groove of the hydrophilic section.
[0012] In the above technical solution, the stacking section is located above the normal water level, the bottom surface height of the groove of the hydrophilic section is lower than the normal water level line, and the top surface height of the outer wall of the groove of the hydrophilic section is above the normal water level line.
[0013] In the above technical solution, the head of the pine wood pile is buried in the gabion eco-bag for 15 to 20 cm.
[0014] In the above technical solution, all the flood discharge outlets are cavities with square cross-sections whose tops are connected to the external space.
[0015] In the above technical solution, the slope of the gentle slope section is 1:3, and the slope of the stacking section is 1:2.
[0016] The composite slope protection structure of the utility model used in the channel has the following beneficial effects:
[0017] 1. The stacking section is fixed by geococonut net, anchored pine piles and hierarchically arranged gabion ecological stone cages, which can not only stabilize the soil layer of the channel bank, but also ensure the normal exchange between the soil layer and the groundwater of the channel bank. Various plants can also be planted on it, and the soil layer of the channel bank can be stabilized by the plant root system, which greatly improves the stability of the channel bank.
[0018] 2. In the stacking section, the well-arranged gabion eco-bags, gabion eco-gabion walls, plants planted on the gabion eco-bags, and the flood discharge outlets of each staggered gabion eco-gabion wall can greatly reduce the velocity of surface runoff in the stacking section, gentle slope section and above, reduce the erosion of the channel bank by surface runoff, and ensure the safety and stability of the channel bank; when the surface runoff is too large, it can be quickly discharged into the channel through the intercepting ditch and the flood discharge outlets on the gabion eco-gabion walls of the stacking section, reducing the risk of waterlogging.
[0019] 3. The gabion eco-bags on the stacking section use dredged sludge and recycled agricultural straw as fillers, which not only solves the disposal problem of agricultural straw and dredged sludge, but also can use straw and dredged sludge as fertilizer for plants on the stacking section; at the same time, the use of eco-bags will not produce substances harmful to the environment, will not have adverse effects on the environment and ecology, reduce the consumption of natural resources, and reduce engineering costs; the dredged sludge and agricultural straw and other fillers in the eco-bags can not only store part of the surface runoff, but also use the organic matter in the dredged sludge to purify the water quality.
[0020] 4. Various types of plants on the gentle slope and stacked sections not only store part of the surface runoff, but also filter out pollutants such as organic matter and heavy metals in the surface runoff, thereby reducing the pollution of channel water quality by surface runoff.
[0021] 5. The hydrophilic section adopts the gabion ecological stone cage structure, which is stable and permeable. Underwater ecological bags for planting aquatic plants are arranged in the grooves. The combination of gabion ecological stone cages and aquatic plants greatly reduces the scouring of the channel bank by waves. The hydrophilic section is directly connected to the stacking section, which can not only reduce the scouring of the channel bank slope by the surface runoff from the high ground, but also use the purification function of aquatic plants to further reduce the pollution of the channel water quality by the surface runoff.
[0022] 6. The terrestrial and aquatic plants in the gentle slope section, stacked section and hydrophilic section also provide habitats for terrestrial, aquatic and amphibian animals, generating great ecological benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a cross-sectional schematic diagram of the composite slope protection structure used for a channel of the utility model;
[0024] Figure 2 It is a plan view of the composite slope protection structure for a channel according to the utility model. DETAILED DESCRIPTION
[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.
[0026] Reference Figure 1 to Figure 2As shown, the utility model provides a composite slope protection structure for a channel, which comprises a gentle slope section 1, an intercepting ditch 3, a stacking section and a hydrophilic section 10 arranged in sequence from high to low; the gentle slope section 1 comprises a backfill soil layer 2 arranged from the bottom, and trees, shrubs and other plants planted thereon; the intercepting ditch 3 is a gabion ecological stone cage structure ditch, and flood discharge outlets 8 are arranged at intervals on the ditch wall adjacent to the channel; the stacking section is a multi-level slope structure, comprising a backfill soil layer 2, a geonet 4, a pine pile 5, a gabion ecological bag 6, a gabion ecological stone cage wall 7, and shrubs, turf and other plants planted thereon, and flood discharge outlets 8 arranged at intervals on the gabion ecological stone cage wall 7; the hydrophilic section 10 is a gabion ecological stone cage structure, which is concave in shape, and an underwater ecological bag 9 is arranged in its groove, and the underwater ecological bag 9 is used to plant various aquatic plants; the filling material in the underwater ecological bag 9 includes dredged silt, agricultural straw and plant seeds.
[0027] Furthermore, the slope of the gentle slope section 1 is 1:3, and the horizontal width is preferably 5 to 15 m.
[0028] Furthermore, the backfill soil layer 2 has a layered backfill thickness of no more than 30 cm and a compaction degree of no less than 0.9.
[0029] Furthermore, the intercepting ditch 3 is a gabion ecological stone cage structure ditch, the outer width of the ditch is 1000cm, the outer height is 50cm; the inner height of the ditch is 20cm, and the width is 40cm; the flood discharge outlet 8 is set on the ditch wall on the side of the channel every 30 to 35m, the flood discharge outlet 8 is a square with a side length of 20cm, and the upper part of the flood discharge outlet 8 is not closed.
[0030] Furthermore, the stacking section includes a backfill soil layer 2, a geo-coconut net 4, pine wood piles 5, gabion eco-bags 6, gabion eco-stone cage walls 7, and plants such as shrubs and turf planted thereon.
[0031] Furthermore, the slope of the stacking section is 1:2, and the horizontal width is preferably 5 to 10 m.
[0032] Furthermore, pine wood piles 5 with a diameter of 8 to 10 cm and a length of 150 to 200 cm are arranged in a single row along the length direction of the gabion eco-bags 6 at an interval of 1.5 to 2 m. The pine wood piles 5 pass through the geococonut net 4, and the pile heads penetrate into the gabion eco-bags 6 by 15 to 20 cm.
[0033] Furthermore, the outer frame of the gabion eco-bag 6 is a gabion net with a height of 30 cm and a width of 50 cm and is continuously arranged along the length direction of the channel, and the inside is filled with eco-bags with a height of 15 cm and a width of 30 cm; the filling materials in the eco-bags are dredged silt, agricultural straw and plant seeds.
[0034] Furthermore, the gabion ecological stone cage wall 7, whose gabion mesh specifications are 50 cm high and 50 cm wide, is continuously arranged along the length direction of the channel; a flood discharge outlet 8 is set at an interval of 30 to 35 m on the upper part of the gabion ecological stone cage wall 7, and the cross-section of the flood discharge outlet 8 is a square with a side length of 20 cm, and the upper part of the flood discharge outlet 8 is not closed.
[0035] Furthermore, each section of the gabion ecological bag 6 shares the same gabion net with the corresponding adjacent side gabion ecological stone cage wall 7 .
[0036] Furthermore, the bottom end of the stacking section is connected to the top end of the hydrophilic section 10; and the stacking section is located above the normal water level.
[0037] Furthermore, the hydrophilic section 10 is a gabion ecological stone cage structure, which is concave in shape, and an underwater ecological bag 9 is arranged in its groove, and the underwater ecological bag 9 is used to plant various aquatic plants.
[0038] Furthermore, in the hydrophilic section 10, the bottom surface height of the groove is 30 cm below the normal water level, and the top surface height of the outer wall of the groove is 30 cm above the normal water level.
[0039] The working principle of the utility model is as follows:
[0040] 1. The stacking section is fixed by geococonut net 4, anchored pine piles 5 and hierarchically arranged gabion ecological stone cage walls 7, which can not only stabilize the soil layer of the channel bank, but also ensure the normal exchange between the soil layer and the groundwater of the channel bank. Various plants can also be planted on it, and the soil layer of the channel bank is stabilized by the plant root system, which greatly improves the stability of the channel bank.
[0041] 2. In the stacking section, the well-arranged gabion eco-bags 6, gabion eco-gabion walls 7, the plants planted on the gabion eco-bags 6, and the flood discharge ports 8 of each staggered gabion eco-gabion wall 7 can greatly reduce the velocity of the surface runoff in the stacking section, the gentle slope section 1 and above, reduce the erosion of the channel bank by the surface runoff, and ensure the safety and stability of the channel bank; when the surface runoff is too large, it can be quickly discharged into the channel through the intercepting ditch 3 and the flood discharge ports 8 on the gabion eco-gabion walls 7 of the stacking section, reducing the risk of waterlogging.
[0042] 3. The gabion eco-bags 6 on the stacking section use dredged sludge and recycled agricultural straw as fillers, which not only solves the disposal problem of agricultural straw and dredged sludge, but also can use the straw and dredged sludge as fertilizer for plants on the stacking section; at the same time, the use of gabion eco-bags 6 will not produce substances harmful to the environment, will not have adverse effects on the environment and ecology, reduce the consumption of natural resources, and reduce engineering costs; the fillers such as dredged sludge and agricultural straw in the eco-bags can not only store part of the surface runoff, but also use the organic matter in the dredged sludge to purify the water quality.
[0043] 4. Various plants on the gentle slope section 1 and the stacking section not only store a part of the surface runoff, but also filter out pollutants such as organic matter and heavy metals in the surface runoff, thereby reducing the pollution of the channel water quality by the surface runoff.
[0044] 5. The hydrophilic section 10 adopts a gabion ecological stone cage structure, which is stable and has good water permeability. Underwater ecological bags 9 for planting aquatic plants are arranged in its grooves. The combination of gabion ecological stone cages and aquatic plants greatly reduces the scouring of the channel bank by waves; the hydrophilic section 10 is directly connected to the stacking section, which can not only reduce the scouring of the channel bank slope foot by the surface runoff from the high ground, but also use the purification function of aquatic plants to further reduce the pollution of the channel water quality by the surface runoff.
[0045] 6. The terrestrial and aquatic plants in the gentle slope section 1, the stacked section and the hydrophilic section 10 also provide a habitat for terrestrial, aquatic and amphibian animals, generating great ecological benefits.
[0046] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
[0047] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
Claims
1. A composite slope protection structure for a channel, comprising a slope body, characterized in that: The slope body is provided with a gentle slope section (1), an intercepting ditch (3), a stacking section and a hydrophilic section (10) in order from high to low along the slope; the gentle slope section (1) is a backfill soil layer (2) arranged from the top of the slope downward; the intercepting ditch (3) is a gabion ecological stone cage structure ditch; flood discharge outlets (8) are arranged at intervals on the ditch wall on the channel side of the intercepting ditch (3); and the hydrophilic section (10) is a groove of the gabion ecological stone cage structure.
2. The composite slope protection structure for a channel according to claim 1, characterized in that: The stacking section is a multi-level sloping structure located between the intercepting ditch (3) and the hydrophilic section (10), the stacking section comprises a backfill soil layer (2) located at the bottom, each level of the stacking section comprises a geococonut net (4) located at the top of the backfill soil layer (2), a plurality of gabion eco-bags (6) are arranged on the top surface of the geococonut net (4), the gabion eco-bags (6) are provided with pine wood piles (5) at intervals along the length direction of the stacking section, the pine wood piles (5) sequentially pass through the gabion eco-bags (6) and the geococonut net (4) into the backfill soil layer (2), the gabion eco-bags (6) are provided with a gabion eco-gabion wall (7) on the channel side, and each level of the gabion eco-gabion wall (7) is provided with a flood discharge outlet (8).
3. The composite slope protection structure for a channel according to claim 2 is characterized in that: There are a plurality of flood discharge openings (8) arranged on each level of the gabion ecological gabion wall (7); the plurality of flood discharge openings (8) on the gabion ecological gabion wall (7) are arranged at intervals; and the flood discharge openings (8) on two adjacent levels of the gabion ecological gabion walls (7) are arranged in a staggered manner.
4. The composite slope protection structure for a channel according to claim 3 is characterized in that: There are a plurality of flood discharge outlets (8) on the wall of the intercepting ditch (3), and the plurality of flood discharge outlets (8) on the wall of the intercepting ditch (3) are arranged at intervals, and the flood discharge outlets (8) on the uppermost level of the gabion ecological stone cage wall (7) and the flood discharge outlets (8) on the wall of the intercepting ditch (3) are arranged in a staggered manner.
5. The composite slope protection structure for a channel according to claim 4, characterized in that: Each section of the gabion ecological bag (6) is an ecological bag installed in a gabion net, and each section of the gabion ecological bag (6) and a corresponding section of the gabion ecological stone cage wall (7) share the same gabion net.
6. The composite slope protection structure for a channel according to claim 5, characterized in that: An underwater ecological bag (9) below the normal water level is arranged in the groove of the hydrophilic section (10).
7. The composite slope protection structure for a channel according to claim 6, characterized in that: The stacking section is located above the normal water level, the bottom surface height of the groove of the hydrophilic section (10) is lower than the normal water level, and the top surface height of the outer wall of the groove of the hydrophilic section (10) is above the normal water level.
8. The composite slope protection structure for a channel according to claim 7, characterized in that: The pile head of the pine wood pile (5) is buried in the gabion ecological bag (6) by 15 to 20 cm.
9. The composite slope protection structure for a channel according to claim 8, characterized in that: All the flood discharge openings (8) are cavities with square cross-sections whose tops are connected to the external space.
10. The composite slope protection structure for a channel according to claim 9, characterized in that: The slope of the gentle slope section (1) is 1:3, and the slope of the stacking section is 1:2.