CN114808835A - Flexible protection system for promoting silt and making land near nature - Google Patents

Abstract

The invention discloses a flexible protection system for promoting silt and making land near nature. The flexible protection system for the near-nature siltation promotion and land reclamation comprises a directional opening and closing brush-shaped fence, a sea bed surface covering net and a sand blocking and dredging integrated one-way sand barrier, wherein the directional opening and closing brush-shaped fence is arranged parallel to a coastline; the sea bed surface covering net is arranged on the sea side of the directional opening and closing type brush-shaped fences, the directional opening and closing type brush-shaped fences are distributed in an intertidal zone, the sand blocking and dredging integrated unidirectional sand barrier is distributed above a highest tide level line, and the sea bed surface covering net is laid close to the sea bed surface and is in a semi-floating state in seawater. The directional opening and closing brush-shaped fence provided by the embodiment of the invention has a simple structure and is convenient to use, and a flexible protection system formed by matching the directional opening and closing brush-shaped fence with the sand-blocking and sand-dredging integrated unidirectional sand barrier and the sea bed surface covering net realizes unidirectional interception of sand particles in sea water and on land, and can promote the siltation process of the sand particles on one side of the land, thereby realizing the purpose of near-nature and flexible silt-promoting and land-building.

Description

A near-natural flexible protection system for promoting siltation and land formation

technical field

The invention belongs to the technical field of coastal ecological environment treatment, and in particular relates to a flexible protection system for promoting silting and land-building near nature.

Background technique

Among marine disasters, coastal erosion with a global trend has generally attracted attention. Coastal erosion refers to the destructive process of coastal retreat caused by the coastal sand supply being less than the coastal sand loss under the action of ocean dynamics. Twenty-five percent of the U.S. coast is severely eroded. 66% of Japan's coastlines have an annual rate of change of more than 1m. Nearly 70% of the sandy coast and part of the silt coast in my country are also eroded to varying degrees. This has caused beach erosion, land area reduction, submerged low-lying coastal areas, flooded seawater, and destroyed coastal buildings and facilities. Environmental hazards. Therefore, it is very necessary to develop methods for promoting siltation and land-building suitable for sandy coasts and islands.

In order to alleviate the harm caused by coastal erosion, the current method is to change the migration pattern of the near-shore sediment through engineering measures in the local coastal section, so that the sediment is accumulated. The main protection works are as follows:

First, seawall, seawall is a traditional coastal protection method for human beings. It is built in the higher area of the beach and is a building used to demarcate the seashore land area and the sea area. The direction is generally parallel to the coastline. Although it plays a great role in securing the coast and preventing moisture and waves. However, it cannot generally be used for beach protection, and it is also not suitable as a long-term protection method for preventing waves, unless it is used as an auxiliary or emergency measure under other engineering measures. Therefore, this kind of engineering structure is generally only suitable for coasts with small waves or silted coasts to prevent abnormal sea subsidence;

Second, spur dams and spur dam groups, spur dams and spur dam groups are coastal structures that are almost perpendicular to the coastline. Its function is to intercept the sediment from the upstream of the coast and form a wide beach to protect the coast. The spur dam has a relatively mature application on the silty coast and can be used in the silty coast area. Surge dams and spur dam groups rely on the intercepted sediment to achieve the purpose of protecting the coast. Therefore, for rivers such as the Yellow River whose sediment volume decreases year by year, it is not conducive to the spur dams to intercept a large amount of sediment to form beaches. Therefore, this protection method is insufficient. especially for sandy coasts;

Third, the offshore embankment, the construction of a breakwater roughly parallel to the shoreline in the sea area at a certain distance outside the coastline is called an offshore breakwater, or offshore embankment for short. Its function is similar to that of spur dam, which can cause siltation of the beach on the upstream side of the offshore embankment. Large boulders or various concrete blocks can be used as facings. However, the opening of the offshore embankment is small, and the pollution is easy to accumulate in the bay and not easy to discharge. Therefore, the choice of offshore embankment as a coastal protection project should consider environmental pollution;

Fourthly, artificial river beach supplementing sand, collecting suitable sand from the sea or on land and supplementing it to the eroded beach is the most natural countermeasure to solve coastal erosion. Beach replenishment has proven to be a cost-effective measure, and it has less impact on downstream beaches than other protective facilities. Since the sand artificially filled on the beach will still be washed away under the action of various marine environmental conditions, especially the waves, the beach must be replenished every few years.

Although there are many forms of coastal protection projects, they all have their own shortcomings. Based on the above analysis, we can see that firstly, except for the fourth artificial river beach replenishment measures, the rest of the measures are set in seawater. The beach does not play a protective role, and the sand will still be brought into the sea by wind erosion; secondly, various dams have played a role in reducing waves and silting sediment to the shore, but at the same time, a large amount of sea sand is still washed and brought back to the sea, Both sides of the dam play the role of blocking sediment, which weakens the supply of sediment on the shore and the effect of siltation; in addition, all kinds of dams are rigid structures, generally only one is installed, and the waves passing through the dam also have a lot of energy. The coast will still be eroded, and the dams are expensive and time-consuming.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a near-natural flexible protection system for promoting siltation and land formation, so as to overcome the deficiencies in the prior art.

In order to achieve the foregoing purpose of the invention, the technical solutions adopted in the embodiments of the present invention include:

The embodiment of the present invention provides a near-natural flexible protection system for promoting silting and land formation, including a directional opening and closing brush fence, a seabed surface covering net, and an integrated one-way sand barrier parallel to the coastline. The seabed surface covering net is arranged on the seaward side of the directional opening and closing brush-shaped fence, the directional opening and closing brush-shaped fence and the seabed surface covering net are distributed in the intertidal zone, and the sand blocking and sand removal are integrated. The one-way sand barrier is distributed above the highest tide level line, and the seabed surface covering net is laid close to the seabed surface and is in a semi-floating state in seawater.

Further, the directional opening and closing type brush fence includes a plurality of upright supporting rods, a plurality of wire-shaped intercepting net brushes and a plurality of net brush leaning rods; wherein, a wire-shaped intercepting net brush is fixed on each supporting rod The wire-shaped intercepting mesh brush includes a plurality of wire bundles distributed along the length direction of the support rod, the two ends of each wire bundle extend to both sides of the supporting rod, and any two adjacent wire-shaped intercepting mesh brushes are arranged in parallel and Partially overlapping, at the overlap of any two adjacent filamentary intercepting net brushes and on the seaward side is also provided with an upright net brush leaning bar; when the waves in the shore direction hit the directional opening and closing brush fence When the two ends of each of the wire bundles are bent towards the coast, any two adjacent wire-shaped intercepting net brushes are separated from each other, so that the solids carried by the waves pass through the directional opening and closing brush-shaped fence, and when When waves in the seaward direction hit the directional opening and closing brush fence, both ends of each wire bundle are blocked by the corresponding mesh brushes, so that any two adjacent wire-shaped intercepting mesh brushes are kept in an overlapping state, thereby preventing waves from being carried The solids pass through the directional opening and closing brush fence.

Further, the integrated one-way sand barrier for sand blocking and sand dispersing includes a plurality of uprights arranged at intervals, the lower part of each upright is fixedly connected to the base, and the two sides of each upright are also connected with a plurality of hooks, the plurality of The hooks are arranged at intervals along the length direction of the uprights, and there are also a plurality of hanging plates and at least one blocking crossbar distributed between the two adjacent uprights. A vertical column is connected, and the lower edge of the hanging board hangs on the bank side, any two adjacent hanging boards are arranged in parallel and partially overlapped, and the blocking crossbar is arranged on the lower edge of the bottom hanging board. On the seaward side; when the wind from the shore sweeps the integrated one-way sand barrier for sand blocking and sand removal, any two adjacent hanging boards are separated from each other, so that the sand particles carried by the wind pass through the sand blocking The integrated one-way sand barrier is transported to the land direction; and when the wind in the seaward direction sweeps the integrated one-way sand barrier, any two adjacent hanging boards are kept in an overlapping state, so that The sand particles carried by the wind are blocked from passing through the integrated one-way sand barrier.

Further, the seabed surface covering net includes a horizontally laid nylon net, and the nylon net is fixed on the seabed surface by a plurality of fixing bolts.

Compared with the prior art, the directional opening and closing brush fence provided by the embodiment of the present invention is simple in structure and convenient to use, and is a flexible protection formed by cooperating with the integrated one-way sand barrier of sand blocking and sand dredging and the seabed surface covering net. The system realizes one-way interception of sand particles in seawater and on land, and can promote the deposition process of sand particles on the land side, so as to achieve the purpose of near-natural and flexible silting and land-building.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic diagram of an assembly process of a directional opening and closing brush fence according to an embodiment of the present invention;

2 is a front view of a directional opening and closing brush fence in a closed state according to an embodiment of the present invention;

3 is a front view of a directional opening and closing brush fence in an open state according to an embodiment of the present invention;

4 is a side view of a directional opening and closing brush fence in a closed state according to an embodiment of the present invention;

5 is a side view of a directional opening and closing brush fence in an open state according to an embodiment of the present invention;

6 is a schematic diagram of an assembly process of an integrated one-way sand barrier for sand blocking and sand removal according to an embodiment of the present invention;

FIG. 7 is a front view of an integrated one-way sand barrier for sand blocking and sand removal in a closed state according to an embodiment of the present invention;

8 is a front view of an integrated one-way sand barrier for sand blocking and sand removal in an open state according to an embodiment of the present invention;

9 is a schematic structural diagram of a seabed surface covering net in an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a flexible protection system for near-natural silting-promoting land-building according to an embodiment of the present invention.

Description of reference numerals: 1-support rod, 2-wire intercepting net brush, 3-net brush leaning rod, 4-connecting rod, 5-post, 51-base, 52-hook, 6-hanging plate, 61-hanging Board body, 62-reinforcing crossbar, 7-blocking crossbar, 8-HDPE nylon ribbon, 9-braided reinforcing rib, 10-seabed surface, 11-highest tide line, 12-shore inclination angle, 13-directional opening Combined brush fence, 14 - seabed surface covering net, 15 - integrated one-way sand barrier for sand blocking and dredging, 16 - coastal erosion protection area.

Detailed ways

The present invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and for teaching one skilled in the art to vary in virtually any suitable detailed embodiment. The manner adopts the representative basis of the present invention.

One aspect of the embodiments of the present invention provides a near-natural flexible protection system for promoting siltation and land formation, including a multi-channel directional opening and closing brush fence parallel to the coastline, a seabed surface covering net, and an integrated sand-blocking and sand-removing unit. A sand barrier; the seabed surface covering net is arranged on the seaward side of the directional opening and closing brush fence, the directional opening and closing brush fence and the seabed covering net are distributed in the intertidal zone, and the sand blocking The integrated one-way sand barrier is distributed on the highest tide line, and the seabed surface covering net is laid close to the seabed surface and is in a semi-floating state in seawater.

In some preferred embodiments, the directional opening and closing brush fence includes a plurality of upright supporting rods, a plurality of wire-shaped intercepting net brushes and a plurality of net brush leaning rods; wherein, a wire is fixed on each supporting rod The wire-shaped intercepting mesh brush includes a plurality of wire bundles distributed along the length direction of the support rod, the two ends of each wire bundle extend to both sides of the support rod, and any two adjacent wire-shaped intercepting meshes The brushes are arranged in parallel and partially overlapped, and a vertical mesh brush leaning bar is also provided at the overlap of any two adjacent filamentary intercepting mesh brushes and on the seaward side; when the waves in the shore direction hit the directional opening In the case of a combined brush-shaped fence, the two ends of each wire bundle are bent toward the coast, so that any two adjacent wire-shaped intercepting mesh brushes are separated from each other, so that the solids carried by the waves pass through the directional opening and closing brush-shaped fence. When the waves in the seaward direction hit the directional opening and closing brush-shaped fence, the two ends of each wire bundle are blocked by the corresponding mesh brushes by the rods, so that any two adjacent wire-shaped intercepting mesh brushes are kept in an overlapping state, Thereby, solids carried by waves are blocked from passing through the directional opening and closing brush fence.

In some preferred embodiments, the directional opening and closing brush fences are distributed in a band-shaped area located in the intertidal zone and 20m-100m away from the highest tide line.

In some preferred embodiments, the directional opening and closing brush fence is inclined toward the coast as a whole and the inclination angle is 70-80°.

In some preferred embodiments, 2-4 directional opening and closing brush fences are arranged in the intertidal zone.

In some preferred embodiments, the lower part of the support rod is buried in the tidal flat, and the top part is bent toward the coast and forms an inclination angle of 70-80° with the seabed surface.

In some preferred embodiments, the length of the support rod is 1.5m-3.0m, the diameter is 30mm-40mm, and the height of the exposed tidal flat is 0.8m-2.3m.

In some preferred embodiments, along the direction from the sea to the coast, the height of each support rod exposed from the tidal flat gradually decreases.

In some preferred embodiments, the support rods comprise galvanized steel pipes.

In some preferred embodiments, the wire bundle is composed of a plurality of HDPE filaments, and the HDPE filaments have a diameter of 1-2 mm and a length of 20-30 cm.

In some preferred embodiments, the wire bundles are 10-20 mm in diameter and 20-30 cm in length.

In some preferred embodiments, the distance between adjacent wire bundles on the same support rod is 10-20 mm.

In some preferred embodiments, both ends of each wire bundle extend to both sides of the support rod with a length of 10-15 cm.

In some preferred embodiments, the length of the overlapping portion of any two adjacent filamentary intercepting brushes is 4-6 cm.

In some preferred embodiments, the wire bundle includes a plurality of filaments radially passing through the support rod, and the plurality of filaments are fixed on the support rod by a grout poured into the inner cavity of the support rod.

In some preferred embodiments, the lower part of the rod of the mesh brush is buried in the tidal flat, and the top is bent toward the coast and forms an inclination angle of 70-80° with the seabed surface.

In some preferred embodiments, the length of the rod of the mesh brush is 1.5m-3.0m, the diameter is 20mm-30mm, and the height of the exposed beach is 0.8m-2.3m.

In some preferred embodiments, along the direction from the sea to the coast, the height at which each mesh brush rests out of the tidal flat gradually decreases.

In some preferred embodiments, the brush rest bar comprises galvanized steel pipe.

In some preferred embodiments, the plurality of support rods and the plurality of net brush leaning rods are further connected to each other through a plurality of connecting rods to form a whole.

The directional opening and closing brush fence provided by the embodiment of the present invention has a unique one-way opening and closing design, so that the opening and closing opening will be opened by the waves toward the bank, and sediments such as sand particles will enter the fence through the opening and closing opening with the water flow and waves to the bank side. , When the wave retreats to the ocean, the opening and closing openings are automatically closed. At this time, the one-way filamentary intercepting mesh brush of the fence allows the seawater to pass through, but the sand will be blocked on the shore side of the fence and will not be brought into the ocean. Therefore, the The process is a flexible process that switches on and off with the surging waves, which promotes the accumulation of sand on the seabed.

The directional opening and closing brush fence provided by the embodiment of the present invention can make the sediment continuously come from the coast and the seabed surface around the island, so there is no need for artificial sand filling, which saves the cost of transportation and filling materials; The filamentary intercepting mesh brush is made of filamentous high-strength polyethylene (HDPE) material, which is resistant to seawater corrosion and has the advantage of flexible wave elimination; Multiple wire bundles are glued and fixed on the support rod to form a whole, and the formed reinforced concrete structure has the advantage of high strength.

In some preferred embodiments, the integrated one-way sand barrier for sand blocking and sand dispersing includes a plurality of uprights arranged at intervals, the lower part of each upright is fixedly connected to the base, and two sides of each upright are also connected with a plurality of hooks, The plurality of hooks are arranged at intervals along the length direction of the column, and there are also a plurality of hanging plates and at least one blocking cross bar distributed between two adjacent columns. The hanging plates are arranged in the horizontal direction and the two ends of the upper edge are respectively At least one hook is connected to a vertical column, and the lower edge of the hanging plate hangs on the side facing the shore, any two adjacent hanging plates are arranged in parallel and partially overlap, and the blocking crossbar is arranged on the bottom hanging plate The seaward side of the lower edge of the lower edge; when the wind from the shore sweeps the integrated one-way sand barrier with sand blocking and sand dredging, any two adjacent hanging boards are separated from each other, so that the sand particles carried by the wind can pass through. The integrated one-way sand barrier is transported to the land direction; and when the wind in the seaward direction sweeps the integrated one-way sand barrier, any two adjacent hanging boards are kept in contact. In a stacked state, the sand particles carried by the wind are blocked from passing through the integrated one-way sand barrier.

In some preferred embodiments, the integrated one-way sand barrier with sand blocking and sand dispersing is multi-channel, and the distance between two adjacent one-way sand blocking integrated one-way sand barriers is 10m-50m.

In some preferred embodiments, the height of the column is 1.3m-3m, and the cross section is 15cm×15cm.

In some preferred embodiments, the height of the base is 0.7m-1m, and the cross-section is 30cm×30cm.

In some preferred embodiments, the distance between two upper and lower adjacent hooks is 15cm-20cm.

In some preferred embodiments, the hooks comprise rebar ring hooks.

In some preferred embodiments, the uprights comprise concrete uprights.

In some preferred embodiments, the hanging board includes a hanging board body and a reinforcing cross bar arranged on the top of the hanging board body, and the ends of the reinforcing cross bar extend from both ends of the hanging board body for hanging on the hook.

In some preferred embodiments, the reinforcing cross bar and the siding body are wrapped and bonded together by a hot-melting method.

In some preferred embodiments, the width of the hanging board body is 15cm-20cm, and the thickness is 2mm-3mm.

In some preferred embodiments, the diameter of the reinforcing cross bar is 1-2 cm, and the distance between the end of the reinforcing cross bar and the corresponding end of the hanging panel body is 1.5 cm.

In some preferred embodiments, the width of the overlapping portion of any two adjacent hanging boards is 2cm-4cm.

In some preferred embodiments, the siding body comprises polyethylene board.

In some preferred embodiments, the reinforcing bars comprise steel bars.

In some preferred embodiments, the blocking bars have a diameter of 1-2 cm.

In some preferred embodiments, the blocking rails comprise rebar.

In some preferred embodiments, for island shorelines, the integrated one-way sand barrier for sand blocking and sand removal is an encircling multi-channel arrangement.

The integrated one-way sand barrier provided by the embodiment of the present invention has the advantages of simple structure and convenient construction and maintenance. The bottom baffle on one side is buried. Under the action of the onshore wind, the hanging plate is in an open state, and the sand particles on the accumulation side will be eroded by wind. Therefore, the risk of the sand barrier itself being buried is low. It has the characteristics of reciprocating circulation, self-cleaning and long service life; under the action of multiple wind directions on the coast, the sand particles reciprocate and circulate, and sand may accumulate on both sides of the bottom hanging plate of the sand barrier. When the height is 3, the buried hanging board at the bottom can be dug out and hung on the hook at the upper end of the column, or a new hanging board can be directly hung. Therefore, the present invention can also realize the purpose of reusing hanging boards and uprights, conveniently raising the height of the sand barrier, prolonging the service life of the project, and at the same time saving the cost, realizing the purpose of continuous lifting of the ground surface and promoting siltation and land formation.

In some preferred embodiments, the seabed surface covering net comprises a horizontally laid nylon net, and the nylon net is fixed on the seabed surface by a plurality of fixing bolts.

In some preferred embodiments, the distance between adjacent fixing rods is 50-100 cm.

In some preferred embodiments, the nylon mesh includes a plurality of braided reinforcing ribs vertically arranged in parallel, and a plurality of HDPE nylon ribbons are distributed between two adjacent braided reinforcing ribs, and the width of the HDPE nylon ribbons is 2- 3cm, the thickness is 1-1.5mm.

In some preferred embodiments, the nylon mesh has a length of 10-50m and a width of 5-10m.

In some preferred embodiments, the braided reinforcing rib has a width of 3 mm and a thickness of 2 mm.

In some preferred embodiments, the distance between the seabed surface covering net and the seabed surface is 10-20 cm.

The flexible protection system provided by the embodiment of the present invention, the flexible protection system formed by the directional opening and closing brush-shaped fence, the integrated one-way sand barrier for sand blocking and sand removal, and the seabed surface covering net, realizes both in seawater and on land. The one-way interception of sand particles promotes the deposition process of sand particles on the land side, so as to achieve the purpose of near-natural and flexible silting and land-building; among them, the seabed surface covering net can make the directional opening and closing brush fence intercept on the shore. The sand and gravel on one side naturally falls into the seabed surface under the covering net under the action of wave transmission and scouring, which plays the role of flexibly reducing the wave energy of the bed surface, covering and protecting the sand and gravel on the bed surface, and accumulating the bed surface elevation.

The flexible protection system provided by the embodiment of the present invention also has the beneficial effects of automatically filtering seawater, intercepting marine debris and cleaning marine pollution.

The technical solutions provided by the above embodiments of the present invention utilize the principle of a one-way valve, which can make the shore supply of seawater and sandy and gravel sediments on land greater than the seaward loss, and has a near-natural and flexible function of promoting siltation and land formation. Preventing coastal erosion is of great practical significance.

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example

This embodiment first provides a near-natural flexible protection system for promoting siltation and land formation, as shown in FIG. 10 , including multiple directional opening and closing brush fences 13 parallel to the coastline, seabed surface covering nets 14 and sand blocking One-way sand barrier 15 integrated with sand removal; seabed surface covering net 14 is arranged on the seaward side of the directional opening and closing brush fence 13, and the directional opening and closing brush fence 13 and the seabed surface covering net 14 are distributed in the intertidal zone Inside, the integrated one-way sand barriers 15 for sand blocking and dredging are distributed above the highest tide line 11, and the seabed surface covering net 14 is laid close to the seabed surface 10, and is in a semi-floating state in seawater. The structure and arrangement will be described in detail as follows.

Referring to Figures 1-5, in this embodiment, the directional opening and closing brush fence includes a plurality of upper curved metal support rods 1, a wire-shaped intercepting mesh brush 2 fixed on the support rod, a mesh brush leaning rod 3, a Connecting rod 4 for connecting the support rod and the brush rest rod. The directional opening and closing type brush fence can be arranged in a band-shaped area 20m-100m away from the highest tide line in the intertidal zone. In addition, in the strip area, 2-4 directional open and close brush fences can be arranged in an inclined, in-line, and parallel to the direction of the coastline, and the inclination angle of each fence to the coast is 70-80° to slow down the direction to the shore. The impact of the direction waves. Referring to Figure 1, the wire-shaped intercepting mesh brush 2 can be fixedly connected to the metal support rod 1, and then connected to the mesh brush leaning rod 3, connecting rod 4, etc. to form the directional opening and closing brush-shaped fence.

Among them, each support rod 1 can be made of galvanized steel pipe, the height is 1.5m-3.0m, the diameter is 30mm-40mm, the depth buried in the tidal flat is more than 0.7m, and the height of the exposed tidal flat is 0.8m-2.3m . From the sea to the shore direction (the direction indicated by the arrow in FIG. 2 ), the height of each support rod 1 exposed to the tidal flat gradually decreases. The top of each support rod 1 has a certain curvature, and the bending direction faces the coast when set, and has an inclination angle of 70-80° with the seabed surface.

Wherein, each wire-shaped intercepting mesh brush 2 may include a plurality of wire bundles, and each wire bundle may be composed of a plurality of HDPE filaments. Each wire bundle can be passed through the support rod 1, and then cement slurry or other adhesives are poured into the support rod 1, so as to fix the wire bundle on the support rod. Each HDPE filament was 1-2 mm in diameter and 20-30 cm in length. The diameter of each wire bundle is 10-20mm and the length is 20-30cm. The spacing between adjacent wire bundles on the same support rod 1 is 10-20mm. In addition, the lengths of each wire bundle extending on the left and right sides of the support rod are equal, and the length of each side is 10-15 cm. A plurality of wire-shaped intercepting mesh brushes 2 are arranged side by side, wherein an opening and closing opening is formed between two adjacent wire-shaped intercepting mesh brushes 2, and the length of the overlapping area between two adjacent wire-shaped intercepting mesh brushes 2 is 4-6 cm.

Wherein, each net brush leaning bar 3 is arranged on the seaward side of the wire-shaped intercepting net brush 2, at the middle position of two adjacent support rods 1 (that is, the overlapping area between the two adjacent wire-shaped intercepting net brushes 2). central location). When the waves toward the shore hit the wire-shaped intercepting mesh brush 2, both ends of the wire-shaped intercepting mesh brush 2 are bent toward the coast, and the two adjacent wire-shaped intercepting mesh brushes 2 are separated from each other, so that the aforementioned opening and closing openings are naturally opened. The solids carried by the waves pass through the wire-shaped intercepting mesh brush 2. When the seaward wave hits the wire-shaped intercepting mesh brush 2, the adjacent two wire-shaped intercepting mesh brushes 2 are kept due to the blocking of the mesh brush by the rod 3. In the overlapping state, the aforementioned opening and closing ports are automatically closed to prevent the solids carried by the waves from rushing into the sea, thereby realizing the one-way passing function of opening to the shore and closing to the sea.

Each mesh brush leaning rod 3 can be made of galvanized steel pipe, the height is 1.5m-3.0m, the diameter is 20mm-30mm, the depth buried in the tidal flat is more than 0.7m, and the height of the exposed tidal flat is 0.8m-2.3m . From the sea to the shore, the height of each net brush leaning bar 3 exposed to the tidal flat gradually decreases. The top of each mesh brush leaning rod 3 has a certain curvature, and the bending direction faces the coast when set, and has an inclination angle of 70-80° with the seabed surface 10 .

Wherein, each connecting rod 4 plays the role of connecting each supporting rod 1 and the net brush leaning rod 3, making it a whole, and each connecting rod 4, the supporting rod 1 and the net brush leaning rod 3 can be connected by a cross tube clip or the like. Institutions are linked together, but not limited to this.

Referring to FIGS. 6 to 8 , in this embodiment, the integrated one-way sand barrier for blocking sand and removing sand includes a plurality of uprights 5 arranged at intervals, the lower part of each upright 5 is fixedly connected to the base 51, and two of the uprights 5 are The side is also connected with a plurality of hooks 52, and the plurality of hooks 52 are arranged at intervals along the length direction of the column 5. There are also a plurality of hanging plates 6 and at least one blocking cross bar 7 between the adjacent two columns 5. The two ends of the upper edge are arranged in the horizontal direction and are respectively connected with a column 5 through at least one hook 52. At the same time, the lower edge of the hanging plate 6 is hung on the bank side, and any two adjacent hanging plates 6 are arranged in parallel and partially overlapped. , the blocking crossbar 7 is arranged on the seaward side of the lower edge of the bottom hanging plate 6; when the wind blowing the sand blocking and sand-removing integrated one-way sand barrier, any two adjacent hanging The plates 6 are separated from each other, so that the sand particles carried by the wind are transported to the land direction through the integrated one-way sand barrier; When a sand barrier is used, any two adjacent hanging boards 6 are kept in an overlapping state, so as to prevent the sand particles carried by the wind from passing through the integrated one-way sand barrier; It is multi-channel, and the distance between two adjacent sand-blocking and sand-removing integrated one-way sand barriers is 10m-50m.

Among them, the height of the column 5 is 1.3m-3m, and the cross-section is 15cm×15cm; the height of the base 51 is 0.7m-1m, and the cross-section is 30cm×30cm; the distance between the upper and lower adjacent hooks 52 is 15cm-20cm; The hanging board 6 includes a polyethylene hanging board body 61 and a reinforcing cross bar 62 arranged on the top of the hanging board body 61 , and the end of the reinforcing cross bar 62 protrudes from both ends of the hanging board body 61 for hanging on the hook 52 ; Reinforcing crossbar 62 and hanging plate body 61 are wrapped and bonded together by hot-melting method; The width of hanging plate body 61 is 15cm-20cm, and the thickness is 2mm-3mm; The diameter of reinforcing crossbar 62 is 1-2cm, and The distance between the end of the reinforcing cross bar 62 and the corresponding end of the hanging board body 61 is 1.5 cm; the width of the overlapping portion of any two adjacent hanging boards 6 is 2 cm-4 cm; the diameter of the blocking cross bar 7 is 1-2 cm , the blocking bar 7 includes steel bars.

For the island coastline, the one-way sand barrier integrated with sand blocking and dredging is an encircling multi-channel setting.

In this embodiment, referring to FIG. 9 , the seabed surface covering net can be made of nylon net, which includes a plurality of braided reinforcing ribs 9 vertically arranged in parallel, and a plurality of HDPE nylon fibers are distributed between two adjacent braided reinforcing ribs 9 Ribbon 8, HDPE nylon ribbon 8 has a width of 2-3cm and a thickness of 1-1.5mm; the length of the nylon mesh is 10-50m and the width is 5-10m; the width of the braided reinforcing bar 9 is 3mm and the thickness is 2mm; The distance between the bed surface covering net and the seabed surface is 10-20cm.

The deployment method of the flexible protection system according to the embodiment of the present invention includes:

Arrange multiple directional opening and closing brush fences 13 in the intertidal zone and parallel to the coastline;

Above the highest tide line 11 and parallel to the coastline is an integrated one-way sand barrier 15 for sand blocking and dredging (first use a drilling machine to drill holes on the ground, the hole diameter is 30cm, the depth is 0.7-1m, and the column 5 is embedded, The distance between the uprights 5 is 2.04m, and then both ends of the hanging plate 6 are hung on the hooks 52 of the upright column 5; when setting, the lower edge of the hanging plate 6 is placed on the bank side, and any two adjacent hanging plates are suspended. The plates 6 are arranged in parallel and partially overlapped, and the blocking cross bar 7 is arranged on the lowermost hook 52 of the upright column 5 to block the lowermost hanging plate 6).

When the tide ebbs, a plurality of strip-shaped seabed surface covering nets 14 are arranged in the intertidal zone on the seaward side of the directional opening and closing brush fence 13 through fixed brazing to form a flexible protection system.

In this embodiment, a flexible protection system is formed by cooperating with a directional opening and closing brush fence, an integrated one-way sand barrier for sand blocking and sand dredging, and a seabed surface covering net. The sand barriers are all flexible structures, all adopt the principle of one-way valves, and are arranged in parallel with the coast in multiple channels; the directional opening and closing brush fences are set in the seawater in the intertidal zone, and under the action of waves, the sand grains are made one-way toward the shore. Conveying; one-way hanging plate type one-way sand barrier is set on the land beach through the integrated one-way sand barrier, under the action of wind, the sand is transported to the shore in one direction; the protection system formed by the combination of the two, It can transport sea sand, shells, coral debris, etc. in seawater and on land to the shore, and at the same time prevent it from returning to the sea, so that the supply of sediment to the shore is greater than the loss to the sea, and the erosion of the coast is reduced; flexible; The seabed surface covering net ensures that the larger particle debris (sand, gravel, coral, shells, etc.) on the seabed surface can fall to the seabed surface at the bottom of the net, and is protected by the net from being brought back by the tide. In the sea, the three are combined with a certain layout method. In the sea and on the land, the one-way interception of sand particles is realized, which promotes the deposition process of sand particles on the land side, so as to achieve a near-natural and flexible siltation-promoting land-building. Purpose.

The aspects, embodiments, features, and examples of the present invention are to be considered in all respects illustrative and not intended to limit the invention, the scope of which is defined only by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.

The use of headings and sections in this application is not meant to limit the invention; each section is applicable to any aspect, embodiment or feature of the invention.

Throughout this specification, where a composition is described as having, comprising or including particular components, or where a process is described as having, comprising or including particular process steps, it is contemplated that the compositions of the present teachings will also be substantially The above consists of or consists of the recited components, and the processes taught herein also consist essentially of, or consist of, the recited process steps.

The use of the terms "include, includes, including," "have, has, or having" should generally be understood to be open-ended and not limiting unless specifically stated otherwise.

It should be understood that the order of the steps or the order in which the particular actions are performed is not critical so long as the present teachings remain operable. Furthermore, two or more steps or actions may be performed simultaneously.

In addition, the inventors of the present application also carried out experiments with other raw materials, technological operations and technological conditions mentioned in this specification with reference to the foregoing examples, and all obtained satisfactory results.

Although the present invention has been described with reference to illustrative embodiments, those skilled in the art will understand that various other changes, omissions and/or additions and the like may be made without departing from the spirit and scope of the invention Effects replace elements of the described embodiments. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is not intended herein to limit the invention to the particular embodiments disclosed for carrying out the invention, but it is intended that this invention include all embodiments falling within the scope of the appended claims. Furthermore, unless specifically stated, any use of the terms first, second, etc. does not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

Claims (10)

1. a near-natural flexible protection system for promoting silting and land-building, is characterized in that, comprising directional opening and closing brush fences, seabed surface covering nets and integrated one-way sand barriers parallel to the coastline The seabed surface covering net is arranged on the seaward side of the directional opening and closing brush-shaped fence, the directional opening and closing brush-shaped fence and the seabed surface covering net are distributed in the intertidal zone, and the sand blocking and sand removal are integrated. The one-way sand barrier is distributed on the highest tide line, and the seabed surface covering net is laid close to the seabed surface and is in a semi-floating state in seawater. 2 . The flexible protection system for promoting silting and land-building near nature according to claim 1 , wherein the directional opening and closing brush-shaped fence comprises a plurality of upright supporting rods ( 1 ), a plurality of wire-shaped intercepting nets. 3 . A brush (2) and a plurality of mesh brush leaning rods (3); wherein, a wire-shaped intercepting mesh brush (2) is fixed on each support rod (1), and the wire-shaped intercepting mesh brush (2) includes an edge support A plurality of wire bundles distributed in the length direction of the rod (1), the two ends of each wire bundle extend to both sides of the support rod (1), and any two adjacent wire-shaped intercepting mesh brushes (2) are arranged in parallel and partially intersecting. Stacked, at the overlap of any two adjacent filamentary intercepting net brushes (2) and on the seaward side, there is also a vertical net brush leaning bar (3); when the waves in the shore direction hit the directional opening When the brush-shaped fence is combined, both ends of each of the wire bundles are bent toward the coast, so that any two adjacent wire-shaped intercepting net brushes (2) are separated from each other, so that the solids carried by the waves pass through the directional opening. When the wave in the seaward direction hits the directional opening and closing brush fence, the two ends of each wire bundle are blocked by the corresponding mesh brush rods (3), so that any two adjacent wire-shaped intercepting nets are blocked. The brushes (3) remain in an overlapping state, thereby blocking the solids carried by the waves from passing through the directional opening and closing brush fence. 3. The flexible protection system for near-natural silting-promoting land-building according to claim 1, characterized in that: the directional opening and closing brush fences are distributed in a strip located in the intertidal zone and 20m-100m away from the highest tide line and/or, the directional opening and closing brush fence is inclined toward the coast as a whole and the inclination angle is 70-80°; and/or, the intertidal zone is provided with 2-4 said orientations Opening and closing brush fence. 4. The flexible protection system for near-natural silting-promoting land-building according to claim 1, characterized in that: the lower part of the support rod (1) is embedded in the tidal flat, and the top is bent toward the coast and forms a 70-80 o'clock with the seabed. ° inclination angle; and/or, the length of the support rod (1) is 1.5m-3.0m, the diameter is 30mm-40mm, and the height of the exposed tidal flat is 0.8m-2.3m; and/or, along the sea to the coast direction, the height of each support rod (1) exposed to the tidal flat gradually decreases; and/or, the support rod (1) comprises a galvanized steel pipe; And/or, the wire bundle is composed of a plurality of HDPE filaments, and the HDPE filaments have a diameter of 1-2 mm and a length of 20-30 cm; and/or, the wire bundle has a diameter of 10-20 mm and a length of 10-20 mm. 20-30cm; and/or, the distance between adjacent wire bundles on the same support rod is 10-20mm; and/or, the length of each wire bundle extending to both sides of the support rod (1) is 10- 15cm; and/or, the length of the overlapping portion of any two adjacent wire-shaped intercepting mesh brushes (2) is 4-6cm; and/or, the wire bundle a plurality of filaments, and the plurality of filaments are fixed on the support rod (1) by the cement slurry poured into the inner cavity of the support rod (1); And/or, the lower part of the net brush leaning rod (3) is buried in the tidal flat, and the top is bent toward the coast and forms an inclination angle of 70-80° with the seabed surface; and/or, the length of the net brush leaning rod (3) It is 1.5m-3.0m, the diameter is 20mm-30mm, and the height of the exposed tidal flat is 0.8m-2.3m; and/or, along the direction from the sea to the coast, the height of the exposed tidal flat of each net brush rod (3) gradually decreases and/or, the mesh brush rest bar (3) comprises a galvanized steel pipe. 5. The flexible protection system for near-natural silting-promoting land-building according to claim 1, characterized in that: the plurality of support rods (1) and the plurality of mesh brush leaning rods (3) are further connected through a plurality of connecting rods (1). 4) Connect to each other to form a whole. 6. The flexible protection system for near-natural silting-promoting land-building according to claim 1, characterized in that: the integrated one-way sand barrier for sand blocking and dredging comprises a plurality of uprights (5) arranged at intervals, and each upright (5) The lower part is fixedly connected with the base (51), and a plurality of hooks (52) are also connected on both sides of each upright column (5), and the plurality of hooks (52) are arranged at intervals along the length direction of the upright column (5). There are also a plurality of hanging plates (6) and at least one blocking cross bar (7) distributed between the two adjacent columns (5), the hanging plates (6) are arranged in the horizontal direction and the two ends of the upper edge are respectively At least one hook (52) is connected with a column (5), and the lower edge of the hanging plate (6) is suspended on the side facing the bank, and any two adjacent hanging plates (6) are arranged in parallel and partially overlapped, The blocking crossbar (7) is arranged on the seaward side of the lower edge of the bottom hanging plate (6); Two adjacent hanging boards (6) are separated from each other, so that the sand particles carried by the wind are transported to the land direction through the integrated one-way sand barrier for sand blocking and sand removal; When the integrated one-way sand barrier is used, any two adjacent hanging boards (6) are kept in an overlapping state, thereby preventing the sand particles carried by the wind from passing through the integrated one-way sand barrier; And/or, the integrated one-way sand barrier with sand blocking and dredging has multiple channels, and the distance between two adjacent one-way sand barriers with integrated sand blocking and dredging is 10m-50m. 7. The flexible protection system for near-natural silting-promoting land-building according to claim 6, characterized in that: the height of the column (5) is 1.3m-3m, and the cross-section is 15cm×15cm; and/or, the The height of the base (51) is 0.7m-1m, and the cross section is 30cm×30cm; and/or, the distance between the upper and lower adjacent two hooks (52) is 15cm-20cm; and/or, the hooks (52) Including a steel ring hook, and/or, the column (5) includes a concrete column; And/or, the hanging board (6) includes a hanging board body (61) and a reinforcing cross bar (62) arranged on the top of the hanging board body (61), and the end of the reinforcing cross bar (62) protrudes from the hanging board The two ends of the main body (61) are used for hanging on the hook (52); and/or, the reinforcing bar (62) and the hanging plate main body (61) are wrapped and bonded together by a hot-melting method; and/or Or, the width of the hanging board body (61) is 15cm-20cm, and the thickness is 2mm-3mm; and/or, the diameter of the reinforcing cross bar (62) is 1-2 cm, and the reinforcing cross bar (62) has a diameter of 1-2 cm. The distance between the end portion and the corresponding end portion of the hanging board body (61) is 1.5 cm; and/or, the width of the overlapping portion of any two adjacent hanging boards (6) is 2 cm-4 cm; and/or, the hanging board (6) has a width of 2 cm-4 cm. The plate body (61) includes a polyethylene plate, and/or the reinforcing cross bar (62) includes steel bars; And/or, the diameter of the blocking crossbar (7) is 1-2 cm, and/or, the blocking crossbar (7) includes steel bars. 8 . The flexible protection system for promoting silting and land-building near nature according to claim 1 , characterized in that: for island shorelines, the integrated one-way sand barrier for sand blocking and dredging is an encircling multi-channel setting. 9 . 9 . The flexible protection system for near-natural silting-promoting land-building according to claim 1 , wherein the seabed surface covering net comprises a horizontally laid nylon net, and the nylon net is fixed to the sea by a plurality of fixing rods. 10 . on the bed. 10. The flexible protection system for near-natural silting-promoting land-building according to claim 9, characterized in that: the spacing between adjacent fixing rods is 50-100 cm; and/or, the nylon mesh comprises a plurality of parallel vertical arrangements There are a plurality of HDPE nylon ribbons (8) distributed between two adjacent braided reinforcement ribs (9), the width of the HDPE nylon ribbon (8) is 2-3cm, and the thickness is 1 -1.5mm; and/or, the nylon mesh has a length of 10-50m and a width of 5-10m; and/or, the braided reinforcing rib (9) has a width of 3mm and a thickness of 2mm; and/or, The distance between the seabed surface covering net and the seabed surface is 10-20cm.

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