CN110184991B - Coastal wetland and implementation method thereof - Google Patents
Coastal wetland and implementation method thereof Download PDFInfo
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- CN110184991B CN110184991B CN201910451953.2A CN201910451953A CN110184991B CN 110184991 B CN110184991 B CN 110184991B CN 201910451953 A CN201910451953 A CN 201910451953A CN 110184991 B CN110184991 B CN 110184991B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
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Abstract
The invention provides a coastal wetland and an implementation method thereof.A first water guide pipe for receiving seawater is embedded in the coastal wetland, the water inlet end of the first water guide pipe is immersed in the seawater, the water outlet end of the first water guide pipe extends towards the land and is connected with one side wall of a first water storage device embedded in the coastal wetland, and the other side wall of the first water storage device is connected with a second water storage device embedded in the coastal wetland through a second water guide pipe; the first water storage device and the second water storage device are both provided with a plurality of permeation holes and are used for storing seawater and supplying water to the outside in a permeation manner; the invention can fully utilize the pressure of the seawater to store the water, and simultaneously supply the water below the shallow surface layer of the coastal wetland by the stored seawater, thereby reducing the water and soil loss and ensuring the integrity of an ecological system.
Description
Technical Field
The invention relates to a coastal wetland and an implementation method thereof, belonging to the technical field of environmental science.
Background
In recent years, due to the increasing activities of human beings in the upstream of rivers and coastal areas, the sediment content in estuary areas changes, and the scouring and silting environment in estuary areas is directly influenced, so that the reduction of estuary wetland area and the degradation of functions are caused. Meanwhile, with the implementation of near shore engineering, particularly large-scale sea reclamation projects, a lot of coastal wetlands are directly reclaimed, natural shorelines are continuously reduced, the coastal wetlands are degraded, and the bearing capacity of the coastal environment is reduced. In addition, projects such as sea reclamation which change the natural properties of the coast greatly cause the change of the offshore hydrodynamic conditions, some local bank sections are developed into erosion bank sections, and the original coastal wetland is further degraded. China coast is seriously eroded, the shoreline occupies a large proportion, and the eroded coast is widely distributed. According to statistics, 70% of sandy beaches and most of muddy tidal beaches in open water are eroded in China, and the length of an erosion shoreline accounts for 1/3 of the total length of a land shoreline of the nation. And the silt content in water caused by coastal erosion is reduced, and the original wetland vegetation begins to return along with the extension of the tidal invasion time, so the restoration of the bottom material of vegetation growth is the foundation in the restoration and reconstruction of coastal wetlands.
The coastal wetland is in a sea-land intersection area, is strongly influenced by various factors such as physics, chemistry, biology and the like, is an ecological marginal area with higher ecological diversity, and has positive significance for protecting a shoreline and maintaining ecological functions.
China has an area of 500m2More than 6500 islands with most of the islands having an area less than 99km2The shortage of fresh water resources in small and medium-sized islands not only makes the land-based ecosystems of the islands extremely fragile, but also seriously influences the development and utilization of the islands. Rainfall is the only way for the island to obtain natural fresh water for supplement, but because the area of the ponding is small, the water retention capacity of the surface vegetation and the soil is poor, most of the rainwater flows into the sea in a runoff form during rainfall, so that the fresh water wetland of the island is not developed, the biological diversity is low, and the ecological bearing capacity is small.
Abandoned farmland on the island is degraded into marshland because of unattended management, some intermittent streams are silted and narrowed, and the water storage capacity is reduced. As a result of the degradation of the island wetland, a large amount of fresh water flows into the sea in rainy seasons, and the amount of water required for the stability of the wetland ecosystem cannot be provided in dry seasons. In order to solve the problem of insufficient fresh water resources of the island, a reservoir is built on the island, and a plurality of hills and ditches are subjected to hard bottom treatment, so that the hills and the ditches are cut off when drought occurs in the hills and the water retention target is not realized in dry seasons.
Disclosure of Invention
The invention provides a coastal wetland and an implementation method thereof aiming at the problems, which can fully utilize the pressure of seawater to store water, and simultaneously supply water to the part below the shallow surface layer of the coastal wetland by the stored seawater, thereby reducing water and soil loss and ensuring the integrity of an ecological system.
The specific technical scheme is as follows:
a coastal wetland comprises an offshore wetland, wherein a first water guide pipe for receiving seawater is embedded in the offshore wetland, the water inlet end of the first water guide pipe is immersed in the seawater, the water outlet end of the first water guide pipe extends towards the land and is connected with one side wall of a first water storage device embedded in the offshore wetland, and the other side wall of the first water storage device is connected with a second water storage device embedded in the offshore wetland through a second water guide pipe; all be equipped with a plurality of infiltration holes on first water storage device and the second water storage device, first water storage device and second water storage device all are used for storing the sea water and supply to outside infiltration.
Furthermore, the water inlet end of the first water conduit is expanded outwards to form a horn-shaped structure, the water inlet end of the first water conduit is provided with a check valve, so that seawater can only flow to the first water storage device from the sea, and the front end of the check valve is provided with at least one filter screen.
Furthermore, the first water storage device and the second water storage device both comprise device shells, and a gland is fixed on the top of the device shells through screws.
Further, all include the water storage chamber and the overflow chamber of mutual intercommunication in first water storage device and second water storage device's the device casing, the infiltration hole sets up on the lateral wall of overflow chamber, and the water storage chamber sets up in the below of overflow chamber, and the length and the width in water storage chamber are equallyd divide and are greater than the length and the width in overflow chamber respectively, and the water storage chamber is used for storing received sea water, and the overflow chamber is used for supplying water to nearly bank wetland infiltration.
Further, the gland passes through the screw fixation at the top of overflow chamber, and the gland slope sets up.
Furthermore, a dredging mechanism is arranged in the device shell and used for assisting in cleaning deposited silt.
Furthermore, the dredging mechanism comprises an aeration component, a water outlet component and at least one group of dredging components, wherein the aeration component is arranged at the bottom of the device shell and used for stirring water stored in the device shell, the water outlet component is used for keeping the water level line in the device shell and is arranged above the aeration component, and the dredging components are used for removing silt.
Further, the aeration subassembly is including coiling the aeration pipe in the bottom of device casing, and the aeration pipe is located vertical ascending a plurality of aeration mouths that are equipped with on the pipe wall in the device casing, through intermittent type nature to leading in compressed air to the aeration pipe, makes compressed air follow the aeration mouth to the water discharge of depositing in the device casing to make sediment in the device casing suspend under compressed air's stirring and deposit in the water.
Furthermore, the water outlet assembly comprises a water outlet, a plurality of third water guide pipes are detachably connected to the water outlet, the third water guide pipes are permeation pipes, and at least one geotechnical cloth layer is coated outside the permeation pipes; when the storage height of the water stored in the device shell is higher than the water outlet, the water can permeate to a farther position outwards through the third water conduit.
Furthermore, the dredging component comprises a main rotating shaft, a salvaging component and a silt collecting component; the main rotating shaft is provided with external threads, the bottom of the main rotating shaft is rotatably fixed at the bottom of the device shell, the top of the main rotating shaft is rotatably inserted into a slot fixed at the bottom of the gland, the two sides of the main rotating shaft are provided with first guide rods in parallel, the slide block is sleeved on the main rotating shaft in a threaded fit manner, the two first guide rods respectively penetrate through the slide block, the two salvaging assemblies are arranged at the two sides of the slide block in a mirror image manner, and the two dredging assemblies are respectively fixed on the inner wall of the device shell and are positioned above the water outlet; the main rotating shaft is driven to rotate through the servo motor, the sliding block is enabled to move up and down along the first guide rod, the fishing assembly is enabled to move along with the sliding block, silt in the stored water is brought out in the process that the fishing assembly moves from bottom to top and then is transferred to the silt accumulating assembly, and the servo motor is arranged in a separation cavity located at the bottom of the device shell.
Furthermore, the fishing assembly comprises a fishing cavity with an opening at the top, the inner side of the fishing cavity is fixed on the sliding block, a first opening is formed in the outer side of the fishing cavity, and a baffle plate is arranged in the first opening and can move up and down; a first partition plate is horizontally arranged in the salvaging cavity, a second partition plate is horizontally arranged below the first partition plate, at least one layer of geotextile is laid on the second partition plate, the salvaging cavity is sequentially divided into a water inlet cavity, a draining cavity and an adjusting cavity from top to bottom by the first partition plate and the second partition plate, and a first opening is arranged corresponding to the draining cavity;
a plurality of first water permeable holes are uniformly distributed in the first partition plate, a plurality of second water permeable holes are uniformly distributed in the second partition plate, and a plurality of third water permeable holes are uniformly distributed at the bottom of the salvaging cavity;
a mud scraping component is arranged in the water draining cavity;
the mud scraping component comprises a transmission shaft which is horizontally and rotatably fixed in the draining cavity, one end of the transmission shaft penetrates through the draining cavity to be connected with an output shaft of the stepping motor, external threads are arranged on the transmission shaft, at least two second guide rods are arranged on the outer side of the transmission shaft in parallel, a shifting plate is sleeved on the transmission shaft through thread fit, the second guide rods penetrate through the shifting plate, and shifting pieces are arranged at the bottom of the shifting plate; the stepping motor controls the transmission shaft to rotate, so that the shifting block is driven to reciprocate along the second guide rod, and when the shifting plate moves from inside to outside along with the shifting block, silt deposited on the second partition plate can be pushed out of the first opening;
an adjusting component is arranged in the adjusting cavity;
the adjusting component comprises an adjusting plate which can be horizontally moved and is arranged in the adjusting cavity, a plurality of first plug hole components are arranged at the top of the adjusting plate corresponding to the second permeable holes, and a plurality of second plug hole components are arranged at the bottom of the adjusting plate corresponding to the third permeable holes; a plurality of first springs are arranged between the inner side end of the adjusting plate and the inner side wall of the adjusting cavity, a plurality of connecting rods are arranged at the outer side end of the adjusting plate, and the connecting rods penetrate through the adjusting cavity and are fixedly connected with the first pressing block;
when the first spring is in a free state, the first plug hole assembly plugs the second permeable hole, and the second plug hole assembly plugs the third permeable hole; when the first pressing block is pressed inwards, the adjusting plate moves inwards, the first hole plugging component and the second hole plugging component leave the second permeable hole and the third permeable hole respectively, and the second permeable hole and the third permeable hole are in a conducting state.
Furthermore, the silt accumulation assembly comprises a fixed plate which is fixed on the device shell and positioned outside the salvaging assembly, a second pressing block is arranged at the inner side end of the fixed plate, and when the salvaging assembly moves to pass through the second pressing block, the second pressing block presses the first pressing block to move inwards, so that the second water permeable hole and the third water permeable hole are in a conducting state;
the detachable is equipped with long-pending silt case on the fixed plate, dials the board and deposits the silt on the second division board mutually and push out first opening, shift to long-pending silt case.
Further, the method for realizing the coastal wetland comprises the following steps:
(1) digging a foundation pit on the near-shore wet land, and placing the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the foundation pit after being sequentially connected;
(2) backfilling the foundation pit, burying the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the near-shore wetland, and submerging the water inlet end of the first water diversion pipe in seawater;
(3) seawater enters the first water storage device through the first water diversion pipe and enters the second water storage device through the action of the second water diversion pipe;
(4) the stored water in the first water storage device and the stored water in the second water storage device can permeate to the periphery of the first water storage device and the second water storage device through the permeation holes and can also permeate to a farther position through the permeation pipes in an extending way;
(5) desilting mechanism passes through the deposit water in the aeration subassembly agitating unit casing, and silt is clear away to rethread desilting subassembly, can effectively prevent the pipeline jam.
Further, the dredging method using the dredging component comprises the following steps:
in the upward movement process of the dredging component, silt suspended in the stored water enters the draining cavity from the water inlet cavity, when the dredging component moves to the position of the fixing plate, the second pressing block presses the first pressing block to move inwards, so that the second permeable hole and the third permeable hole are in a conducting state, seawater is filtered by the geotextile and then is discharged from the third permeable hole, and the silt is deposited on the geotextile;
after the seawater is filtered, the stepping motor is started, the stepping motor controls the transmission shaft to rotate, so that when the shifting block is driven to move outwards along the second guide rod, silt deposited on the second partition plate can be pushed out of the first opening and transferred into the silt accumulating box.
The invention has the beneficial effects that:
(1) the invention can fully utilize the pressure of the seawater to store the water, and simultaneously supply the water below the shallow surface layer of the coastal wetland by the stored seawater, thereby reducing the water and soil loss and ensuring the integrity of an ecological system;
(2) the first water storage device and the second water storage device can store water and supply water, and can effectively provide sufficient water for the ecological wetland;
(3) the desilting subassembly can regularly clear away the silt in first water storage device and the second water storage device, prevents that the pipeline from blockking up, has reduced the cost of maintenance and maintenance.
Drawings
Fig. 1 is a cross-sectional view of a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of the water inlet end of the first penstock of the first embodiment.
Fig. 3 is a sectional view of a first water storage device according to a second embodiment of the present invention.
Fig. 4 is an enlarged view of a portion a of fig. 3.
Fig. 5 is an enlarged view of the fishing assembly of fig. 4.
Fig. 6 is an enlarged view of a portion B of fig. 5.
Fig. 7 is a schematic view showing the second and third water permeable holes in a clogged state.
Fig. 8 is a three-sectional view of an embodiment of the present invention.
Fig. 9 is an enlarged view of the first water storage device of fig. 8.
Reference numerals
The device comprises an offshore wetland 1, a first water conduit 2, a first water storage device 3, a second water conduit 4, a second water storage device 5, a penetration hole 6, a horn-shaped structure 7, a check valve 8, a filter screen 9, a device shell 10 and a gland 11;
the aeration component 20, the water outlet component 30 and the dredging component 40;
an aeration pipe 201 and an aeration port 202;
a water outlet 301 and a third water conduit 302;
the device comprises a main rotating shaft 401, a fishing component 402, a silt collecting component 403, a slot 404, a first guide rod 405, a sliding block 406, a servo motor 407, a fishing cavity 408, a first opening 409, a baffle 410, an electric push rod 411, a first partition plate 412, a second partition plate 413, geotextile 414, a water inlet cavity 415, a draining cavity 416, an adjusting cavity 417, a first water permeable hole 418, a second water permeable hole 419, a third water permeable hole 420, a transmission shaft 421, a stepping motor 422, a shifting plate 423, a shifting sheet 424, an adjusting plate 425, a first plug hole component 426, a second plug hole component 427, a first spring 428, a connecting rod 429, a first pressing block 430, a fixing plate 431, a second pressing block 432, a silt collecting box 433, a signal output end 434 of a proximity switch and a signal receiving end 435 of the proximity switch;
a base 501, a pressing groove 502, a third guide rod 503, a top plate 504, a chock 505 and a second spring 506;
a water storage cavity 601 and an overflow cavity 602.
Detailed Description
In order to make the technical scheme of the invention clearer and clearer, the invention is further described with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent replacement and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention.
Example one
The coastal wetland comprises an offshore wetland 1, wherein a first water guide pipe 2 for receiving seawater is embedded in the offshore wetland, the water inlet end of the first water guide pipe is submerged in the seawater, the water outlet end of the first water guide pipe extends towards the land and is connected with one side wall of a first water storage device 3 embedded in the offshore wetland, and the other side wall of the first water storage device is connected with a second water storage device 5 embedded in the offshore wetland through a second water guide pipe 4; all be equipped with a plurality of infiltration holes 6 on first water storage device and the second water storage device, first water storage device and second water storage device all are used for storing the sea water and supply to outside infiltration.
Furthermore, the water inlet end of the first water conduit is expanded outwards to form a horn-shaped structure 7, a check valve 8 is arranged on the water inlet end of the first water conduit, so that seawater can only flow to the first water storage device from the sea, and at least one filter screen 9 is arranged at the front end of the check valve.
Further, the first water storage device and the second water storage device both comprise a device shell 10, and a gland 11 is fixed on the top of the device shell through screws.
Further, the method for realizing the coastal wetland comprises the following steps:
(1) digging a foundation pit on the near-shore wet land, and placing the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the foundation pit after being sequentially connected;
(2) backfilling the foundation pit, burying the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the near-shore wetland, and submerging the water inlet end of the first water diversion pipe in seawater;
(3) seawater enters the first water storage device through the first water diversion pipe and enters the second water storage device through the action of the second water diversion pipe;
(4) the stored water in the first and second water storage devices can permeate around it through the permeation holes.
Example two
The coastal wetland comprises an offshore wetland, wherein a first water guide pipe for receiving seawater is embedded in the offshore wetland, the water inlet end of the first water guide pipe is submerged in the seawater, the water outlet end of the first water guide pipe extends towards the land and is connected with one side wall of a first water storage device embedded in the offshore wetland, and the other side wall of the first water storage device is connected with a second water storage device embedded in the offshore wetland through a second water guide pipe; all be equipped with a plurality of infiltration holes on first water storage device and the second water storage device, first water storage device and second water storage device all are used for storing the sea water and supply to outside infiltration.
Furthermore, the water inlet end of the first water conduit is expanded outwards to form a horn-shaped structure, the water inlet end of the first water conduit is provided with a check valve, so that seawater can only flow to the first water storage device from the sea, and the front end of the check valve is provided with at least one filter screen.
Furthermore, the first water storage device and the second water storage device both comprise device shells, and a gland is fixed on the top of the device shells through screws.
Furthermore, a dredging mechanism is arranged in the device shell and used for assisting in cleaning deposited silt.
Further, the dredging means comprises an aeration unit 20 provided at the bottom of the apparatus casing for agitating the water stored in the apparatus casing, a water discharging unit 30 provided above the aeration unit for maintaining the water level in the apparatus casing, and at least one set of dredging units 40 for removing the silt.
Further, the aeration subassembly includes the aeration pipe 201 of coiling in the bottom of device casing, and the aeration pipe is located the vertical ascending a plurality of aeration openings 202 that are equipped with on the pipe wall in the device casing, through intermittent type nature to leading in compressed air to the aeration pipe, makes compressed air from the aeration opening to the water storage discharge in the device casing to make sediment that deposits in the device casing suspend under compressed air's stirring in the water storage.
Further, the water outlet assembly comprises a water outlet 301, a plurality of third water guide pipes 302 are detachably connected to the water outlet, each third water guide pipe is a penetration pipe, and at least one geotextile layer is coated outside each penetration pipe; when the storage height of the water stored in the device shell is higher than the water outlet, the water can permeate to a farther position outwards through the third water conduit.
Further, the dredging component comprises a main rotating shaft 401, a fishing component 402 and a dredging component 403; the main rotating shaft is provided with external threads, the bottom of the main rotating shaft is rotatably fixed at the bottom of the device shell, the top of the main rotating shaft is rotatably inserted into a slot 404 fixed at the bottom of the gland, two sides of the main rotating shaft are provided with first guide rods 405 in parallel, the main rotating shaft is sleeved with the slider in a threaded fit manner, the two first guide rods respectively penetrate through the slider 406, the two salvaging assemblies are arranged at two sides of the slider in a mirror image manner, and the two dredging assemblies are respectively fixed on the inner wall of the device shell and positioned above the water outlet; the main rotating shaft is driven to rotate through the servo motor 407, so that the sliding block moves up and down along the first guide rod, the fishing assembly moves along with the sliding block, silt in the stored water is brought out in the process of moving from bottom to top of the fishing assembly and then is transferred to the silt accumulating assembly, and the servo motor is arranged in a separation cavity at the bottom of the device shell.
Further, the fishing assembly comprises a fishing cavity 408 with an opening at the top, the inner side of the fishing cavity is fixed on the sliding block, a first opening 409 is arranged on the outer side of the fishing cavity, a baffle 410 is arranged in the first opening and can move up and down, and the baffle is driven by an electric push rod 411 to move; a first partition plate 412 is horizontally arranged in the fishing cavity, a second partition plate 413 is horizontally arranged below the first partition plate, at least one layer of geotextile 414 is laid on the second partition plate, the fishing cavity is sequentially divided into a water inlet cavity 415, a draining cavity 416 and an adjusting cavity 417 from top to bottom by the first partition plate and the second partition plate, and a first opening is arranged corresponding to the draining cavity;
a plurality of first water permeable holes 418 are uniformly distributed on the first partition plate, a plurality of second water permeable holes 419 are uniformly distributed on the second partition plate, and a plurality of third water permeable holes 420 are uniformly distributed at the bottom of the salvaging cavity;
a mud scraping component is arranged in the water draining cavity;
the mud scraping component comprises a transmission shaft 421 which is horizontally and rotatably fixed in the draining cavity, one end of the transmission shaft penetrates through the draining cavity to be connected with an output shaft of the stepping motor 422, the transmission shaft is provided with external threads, the outer sides of the transmission shaft are parallel to each other and provided with at least two second guide rods, the transmission shaft is sleeved with a shifting plate 423 through threaded fit, the second guide rods penetrate through the shifting plate, and the bottom of the shifting plate is provided with a shifting piece 424; the stepping motor controls the transmission shaft to rotate, so that the shifting block is driven to reciprocate along the second guide rod, and when the shifting plate moves from inside to outside along with the shifting block, silt deposited on the second partition plate can be pushed out of the first opening;
a signal output end 434 of the proximity switch is arranged on the shifting block, a signal receiving end 435 of the proximity switch is arranged at the first opening, the signal output end of the proximity switch and the signal receiving end of the proximity switch are respectively in wireless connection with a controller, and the controller is used for controlling the movement of the electric push rod;
when the signal output end of the proximity switch moves to a signal receiving end close to the first opening along with the shifting block, the controller controls the electric push rod to start, and the baffle plate moves upwards to enable the first opening to be in an open state;
when the signal output end of the proximity switch moves to a signal receiving end away from the first opening along with the shifting block, the controller controls the electric push rod to start, and the baffle plate moves downwards to enable the first opening to be in a closed state.
An adjusting component is arranged in the adjusting cavity;
the adjusting component comprises an adjusting plate 425 which can be horizontally moved and is arranged in the adjusting cavity, the top of the adjusting plate is provided with a plurality of first plug hole components 426 corresponding to the second permeable holes, and the bottom of the adjusting plate is provided with a plurality of second plug hole components 427 corresponding to the third permeable holes; a plurality of first springs 428 are arranged between the inner side end of the adjusting plate and the inner side wall of the adjusting cavity, a plurality of connecting rods 429 are arranged at the outer side end of the adjusting plate, and the connecting rods penetrate through the adjusting cavity and are fixedly connected with the first pressing block 430;
when the first spring is in a free state, the first plug hole assembly plugs the second permeable hole, and the second plug hole assembly plugs the third permeable hole; when the first pressing block is pressed inwards, the adjusting plate moves inwards, the first hole plugging component and the second hole plugging component leave the second permeable hole and the third permeable hole respectively, and the second permeable hole and the third permeable hole are in a conducting state.
Furthermore, the first plug hole assembly and the second plug hole assembly both comprise a base 501, a pressure groove 502 is arranged on the base, a plurality of third guide rods 503 are arranged in the pressure groove in parallel, a top plate 504 is movably sleeved on each third guide rod, a plug block 505 is arranged on each top plate and used for blocking the second permeable hole or the third permeable hole, a second spring 506 is sleeved on each third guide rod, and the second spring is arranged between the top plate and the pressure groove in a pressing mode;
when the adjusting plate moves inwards to enable the second permeable hole or the third permeable hole to be in a conducting state, the chock block moves towards the pressure groove under the stress, and the second spring is in a compressed state;
when the regulating plate resets under the effect of first spring, the chock removed to the hole position of permeating water with the second or the third, and the chock blockked up the hole of permeating water of second or the hole of permeating water of third under the effect of second spring.
Further, the silt collecting assembly comprises a fixing plate 431 which is fixed on the device shell and located on the outer side of the salvaging assembly, a second pressing block 432 is arranged on the inner side end of the fixing plate, and when the salvaging assembly moves to pass through the second pressing block, the second pressing block presses the first pressing block to move inwards, so that the second water permeable hole and the third water permeable hole are in a conducting state;
the detachable is equipped with long-pending silt case 433 on the fixed plate, dials the board and deposits the silt on the second division board mutually and push out first opening, shift to long-pending silt case.
Further, the method for realizing the coastal wetland comprises the following steps:
(1) digging a foundation pit on the near-shore wet land, and placing the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the foundation pit after being sequentially connected;
(2) backfilling the foundation pit, burying the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the near-shore wetland, and submerging the water inlet end of the first water diversion pipe in seawater;
(3) seawater enters the first water storage device through the first water diversion pipe and enters the second water storage device through the action of the second water diversion pipe;
(4) the stored water in the first water storage device and the stored water in the second water storage device can permeate to the periphery of the first water storage device and the second water storage device through the permeation holes and can also permeate to a farther position through the permeation pipes in an extending way;
(5) desilting mechanism passes through the deposit water in the aeration subassembly agitating unit casing, and silt is clear away to rethread desilting subassembly, can effectively prevent the pipeline jam.
Further, the dredging method using the dredging component comprises the following steps:
in the upward movement process of the dredging component, silt suspended in the stored water enters the draining cavity from the water inlet cavity, when the dredging component moves to the position of the fixing plate, the second pressing block presses the first pressing block to move inwards, so that the second permeable hole and the third permeable hole are in a conducting state, seawater is filtered by the geotextile and then is discharged from the third permeable hole, and the silt is deposited on the geotextile;
after the seawater is filtered, the stepping motor is started, the stepping motor controls the transmission shaft to rotate, so that when the shifting block is driven to move outwards along the second guide rod, silt deposited on the second partition plate can be pushed out of the first opening and transferred into the silt accumulating box.
EXAMPLE III
As a further optimization of the second embodiment, the first water storage device and the second water storage device respectively comprise a water storage cavity 601 and an overflow cavity 602 which are communicated with each other in the device shell, the permeation holes are formed in the side wall of the overflow cavity, the water storage cavity is arranged below the overflow cavity, the length and the width of the water storage cavity are respectively greater than those of the overflow cavity, the water storage cavity is used for storing the received seawater, and the overflow cavity is used for supplying water to the offshore wetland in a permeation manner; the gland passes through the screw fixation at the top of overflow chamber, and the gland slope sets up.
The aeration component is arranged in the water storage cavity, and the water outlet is arranged in the overflow cavity.
The structural arrangement of the device shell can help the absorption of seawater.
Claims (2)
1. A coastal wetland comprises an offshore wetland and is characterized in that a first water guide pipe for receiving seawater is embedded in the offshore wetland, the water inlet end of the first water guide pipe is immersed in the seawater, the water outlet end of the first water guide pipe extends towards the land and is connected with one side wall of a first water storage device embedded in the offshore wetland, and the other side wall of the first water storage device is connected with a second water storage device embedded in the offshore wetland through a second water guide pipe; the first water storage device and the second water storage device are both provided with a plurality of permeation holes and are used for storing seawater and supplying water to the outside in a permeation manner;
the water inlet end of the first water conduit is expanded outwards to form a horn-shaped structure, a check valve is arranged on the water inlet end of the first water conduit, so that seawater can only flow from the ocean to the first water storage device, and at least one filter screen is arranged at the front end of the check valve; the first water storage device and the second water storage device both comprise device shells, and a gland is fixed at the top of each device shell through a screw;
the device shells of the first water storage device and the second water storage device respectively comprise a water storage cavity and an overflow cavity which are mutually communicated, the permeation holes are formed in the side wall of the overflow cavity, the water storage cavity is arranged below the overflow cavity, the length and the width of the water storage cavity are respectively greater than those of the overflow cavity, the water storage cavity is used for storing received seawater, and the overflow cavity is used for supplying water to the offshore wetland in a permeation manner; a dredging mechanism is arranged in the device shell and is used for assisting in cleaning deposited silt;
the dredging mechanism comprises an aeration component, a water outlet component and at least one group of dredging components, wherein the aeration component is arranged at the bottom of the device shell and is used for stirring water stored in the device shell, the water outlet component is used for keeping the water level line in the device shell and is arranged above the aeration component, and the dredging components are used for removing silt; the aeration component comprises an aeration pipe coiled at the bottom of the device shell, a plurality of aeration openings are vertically and upwards arranged on the pipe wall of the aeration pipe positioned in the device shell, and compressed air is intermittently introduced into the aeration pipe to discharge the compressed air from the aeration openings to stored water in the device shell, so that silt deposited in the device shell is suspended in the stored water under the stirring of the compressed air;
the water outlet assembly comprises a water outlet, a plurality of third water guide pipes are detachably connected to the water outlet, the third water guide pipes are permeation pipes, and at least one geotechnical cloth layer is coated outside the permeation pipes; when the storage height of the stored water in the device shell is higher than the water outlet, the stored water can permeate to a farther position outwards through the third water conduit;
the dredging component comprises a main rotating shaft, a salvaging component and a silt collecting component; the main rotating shaft is provided with external threads, the bottom of the main rotating shaft is rotatably fixed at the bottom of the device shell, the top of the main rotating shaft is rotatably inserted into a slot fixed at the bottom of the gland, the two sides of the main rotating shaft are provided with first guide rods in parallel, the slide block is sleeved on the main rotating shaft in a threaded fit manner, the two first guide rods respectively penetrate through the slide block, the two salvaging assemblies are arranged at the two sides of the slide block in a mirror image manner, and the two dredging assemblies are respectively fixed on the inner wall of the device shell and are positioned above the water outlet; the main rotating shaft is driven to rotate through the servo motor, the sliding block is enabled to move up and down along the first guide rod, the fishing assembly is enabled to move along with the sliding block, silt in the stored water is brought out in the process that the fishing assembly moves from bottom to top and then is transferred to the silt accumulating assembly, and the servo motor is arranged in a separation cavity located at the bottom of the device shell.
2. The coastal wetland realization method according to claim 1, characterized by comprising the following steps,
(1) digging a foundation pit on the near-shore wet land, and placing the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the foundation pit after being sequentially connected;
(2) backfilling the foundation pit, burying the first water diversion pipe, the first water storage device, the second water diversion pipe and the second water storage device in the near-shore wetland, and submerging the water inlet end of the first water diversion pipe in seawater;
(3) seawater enters the first water storage device through the first water diversion pipe and enters the second water storage device through the action of the second water diversion pipe;
(4) the stored water in the first water storage device and the stored water in the second water storage device can permeate to the periphery of the first water storage device and the second water storage device through the permeation holes and can also permeate to a farther position through the permeation pipes in an extending way;
(5) desilting mechanism passes through the deposit water in the aeration subassembly agitating unit casing, and silt is clear away to rethread desilting subassembly, can effectively prevent the pipeline jam.
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