CN108316236B - Dykes and dams suitable for large tidal range in reclamation engineering and multi-closure method thereof - Google Patents
Dykes and dams suitable for large tidal range in reclamation engineering and multi-closure method thereof Download PDFInfo
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- CN108316236B CN108316236B CN201710027939.0A CN201710027939A CN108316236B CN 108316236 B CN108316236 B CN 108316236B CN 201710027939 A CN201710027939 A CN 201710027939A CN 108316236 B CN108316236 B CN 108316236B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004575 stone Substances 0.000 claims abstract description 60
- 239000004576 sand Substances 0.000 claims abstract description 52
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 7
- 241001530613 Horminum pyrenaicum Species 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
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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
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
- E02B3/106—Temporary dykes
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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
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
- E02B3/106—Temporary dykes
- E02B3/108—Temporary dykes with a filling, e.g. filled by water or sand
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention relates to a dam suitable for large tidal range in reclamation engineering and a multi-closure method thereof. Dividing the enclosing area into at least three enclosing areas by using the dykes according to the tide-receiving amount of the reclamation area, arranging a tap in each enclosing area, arranging sand rib soft bars and concrete interlocking block soft bars in the tap, waiting until the dykes on the two sides of the dykes and the tap are constructed to the designed elevation, and selecting smaller tide flood for closure. The method comprises the steps of preparing foot stones and earthwork in advance, synchronously throwing stones for closure of each closure, communicating an outer edge body on the inner side of the throwing stones for closure after closure, and then continuously completing an inner edge body and embankment core sand, wherein closure of the closure is marked. The invention is suitable for reclamation projects of multi-closure large-tide-difference closure with the tide difference being more than 3.5m and the single dyke closure opening width being more than 400m and at least three closure openings needing synchronous closure.
Description
Technical Field
The invention relates to a closure method of reclamation engineering and a dam thereof, in particular to a multi-closure large-tide-difference closure method suitable for a single dam with a tide difference of more than 3.5 meters and a closure of at least three closure openings in a synchronous manner and a dam thereof, wherein the width of the closure opening of the single dam is more than 400 m.
Background
When the tidal flat reclamation project is implemented in the estuary area, the tidal water is affected by tide, the water level of the project area rises and falls, and when the embankment is occupied continuously, one or more opening doors are reserved on the embankment line for the safety of the project and construction, so that the tidal water can freely enter and exit, and the opening doors are called as the longkou. In the construction process, along with the gradual water outlet of the dyke at the non-longkou part, the tide water in the surrounding area is concentrated to enter and exit from the longkou, the flow speed of the longkou is increased, the tide difference is larger, the tide receiving amount is larger, and the flow speed of the longkou is larger when the width of the longkou is constant.
In the prior art, the protection mode of the tap is generally to lay a layer of geotextile on the beach or firstly lay a layer of filling bag sand tube bags on the beach, then lay a layer of geotextile, the geotechnical cloth upper portion is full of and is fixed with the stone, and the manual work demolishs the stone and carries out the closure again when the closure of the dragon mouth, because the stone demolishs the degree of difficulty greatly, consequently has great risk.
The conventional bottom protection in the prior art generally adopts composite rows, is paved by a row paving ship, is limited by the size of the row paving ship, and needs to be paved with a plurality of rows within the range of a tap, and the rows are overlapped. The time interval from the completion of laying the closure of the closure row is generally more than 1-2 months, in the process, the overlapping part is locally increased, the disturbance degree of the water body is enhanced, and the overlapping part is very likely to be flushed due to the limitation of construction conditions, so that a great deal of water can be flushed for several meters under a great tide, and great difficulty is brought to closure of the closure.
Closure process in the prior art: in the estuary area, the closure of the closure is generally carried out by adopting a stone throwing or sand bag filling pipe, and selecting small tide flood closure in the non-flood period. The choice of sand or stone throwing depends on which material is used for the dike body, and is often related to whether local materials can be obtained, and if the sand materials are abundant nearby and the stones are less, the sand tube bags are generally adopted for closure.
The bagged sand tube bag has the advantages of no stone throwing, low construction speed, short closure time for avoiding damage caused by sudden cold and damp and strong wind and strong waves, and is generally suitable for areas with narrow width of the tap and small wind and waves.
If a plurality of closure openings are arranged in the small surrounding areas, and the closure risk of the bagged sand edges is high, if one closure opening fails, the water level in the surrounding areas which are not successfully closed still fluctuates along with the fluctuation of tide, and the water level in the small surrounding areas which are successfully closed basically is near the average tide level, so that the water level difference can occur between the two small surrounding areas, when the seepage diameter of the separation dike is insufficient, the separation dike collapses after being damaged due to the infiltration of foundation soil, the water level in the two small surrounding areas is communicated, the closure opening which is failed is about to bear the entry and exit of tide of the two small surrounding areas, the flow speed is higher, the flushing is more severe, and the risk, difficulty and cost of closure of the closure opening are higher.
At present, a plurality of wide-mouth synchronous closure methods belong to the blank in reclamation projects. Under the trend of deeper reclamation water depth and larger area, projects for forming a plurality of wide closure openings are more and more, and a perfect closure method with a plurality of closure openings and large tide difference is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a dam suitable for large tidal range in reclamation engineering and a multi-closure method thereof, which can solve the problems that beach scouring is easy to occur when the tidal range is large and a plurality of closure openings are closed synchronously.
The technical scheme of the invention is as follows:
the invention relates to a dam suitable for large tidal range in reclamation engineering, which comprises a dike and a separation dike for separating reclamation areas, wherein one end of the separation dike is connected with a shore side, the other end of the separation dike is connected with the dike in an intersecting manner, the reclamation area is divided into at least three surrounding areas, a tap hole is arranged in the middle section of the dike in each surrounding area, the dike is composed of an inner edge body on the shore side and an outer edge body on the water side, dike core sand is arranged between the inner edge body and the outer edge body, the inner edge body, the outer edge body and the separation dike are composed of bagged sand, a sand rib soft row and a concrete interlocking block soft row are paved on the bottom surface of the tap hole from bottom to top, and a locking dam is fixedly arranged between the tap hole and the outer edge body of the dike.
The invention relates to a dam multi-closure method suitable for large tidal range in reclamation engineering, which comprises the following steps:
(1) According to the tide difference and the reservoir capacity of the reclamation area, determining the surrounding area and the width of the closure opening, dividing the reclamation area into at least three surrounding areas, arranging the closure opening in the middle section of the surrounding dike in each surrounding area, determining the width of the closure opening to be less than or equal to 500m according to the maximum flow velocity of the closure opening, and enabling the flow velocity of the closure opening to be less than or equal to 3.5m/s.
(2) And (3) finishing the construction of the dyke, the separation dyke and the riprap dam to form boundary conditions of closure of the closure opening, and respectively paving double layers of sand rib soft rows and concrete interlocking block soft rows on the bottom surface of the closure opening from bottom to top.
(3) Meanwhile, closure construction guarantee is completed, material preparation is carried out according to the closure riprap quantity of a closure of 1.5 times, and the specification of the block stone is 50-500 kg of well-graded riprap; preparing materials according to the amount of 2 times of the closure sand, wherein the content of the sand particles with the sand mass of more than 0.075mm is more than 70 percent, the content of the mud is less than 5 percent,
(4) And constructing a locking dam between the rock-throwing dam and the outer edge body of the dyke closure, wherein the elevation of the locking dam is consistent with that of the outer edge body of the dyke closure.
(5) And when the tide flood is selected to be smaller, synchronously carrying out flat stone throwing on the two sides of the stone throwing dam at each tap position, closing and intercepting the stone throwing dams on the two sides of each tap, and enabling the height of the stone throwing dam to reach 3.5m.
(6) And (3) continuously heightening the stone throwing dam at each tap position to ensure that the elevation is up to +5.0m, and simultaneously completing the construction of the outer prisms at both sides of each tap position in the dyke to ensure that the outer prisms at both sides of the dyke are closed to ensure that the elevation is up to +5.0m.
(7) And respectively completing the construction of the inner prisms and the dyke core sand at two sides of each closure opening in the dyke, so that the inner prisms and the dyke core sand at two sides of the dyke are closed, and thus, the synchronous closure of a plurality of closure openings is completed.
The invention has the beneficial effects that the invention can effectively protect the Longkou beach surface and avoid the adverse consequences of increased engineering quantity and construction difficulty caused by great scouring of the beach surface.
Compared with the prior art, the invention has the following remarkable technical effects:
(1) According to the tide-receiving amount of the reclamation area, a separation bank is arranged to divide the enclosure into 3 or more enclosures, a wide tap is arranged in each enclosure, and double-layer soft bars (a sand rib soft bar below and a concrete interlocking block soft bar above) are adopted to protect the tap by staggered joint paving at the overlapping position of the bars. And a process of synchronously intercepting and closing the earthwork of the stone throwing dams for a plurality of closure ports is adopted.
(2) The bottom of the tap protector is provided with a double-layer arrangement body of sand rib soft arrangement and concrete interlocking block soft arrangement, so that foundation soil below the arrangement body is prevented from being scoured. The row bodies are arranged to prevent the foundation soil at the position of the tap hole from being scoured caused by concentrated water and waves at the tap hole; the double-layer row bodies are arranged to prevent the foundation soil at the lap joint of the row bodies from being scoured, when the double-side row bodies are paved, the upper layer row and the lower layer row are paved by staggered joints, the upper concrete row and the sand rib mixed row have the functions of preventing water from flowing and lifting, and the lower layer row has the function of preventing the lap joint of the upper layer row from being scoured.
(3) The outer side of the outer edge body is provided with a stone throwing dam, the stone throwing dam is firstly narrowed and stopped gradually when the closure is carried out, the inner side of the outer edge body is covered for follow-up construction, and the outer edge body of the bagged sand can be effectively prevented from being damaged by wind waves.
(4) In the process of intercepting the stone throwing dam, the bagged sand edges are caught up in time, so that the closure of the closure opening is completed in a small tide, avoiding the problem of larger water under the subsequent flood is a tidal range that causes the break of the Longkou penetration.
(5) The dam locking is constructed between the stone throwing dam and the outer edge body of the dyke, and the elevation of the dam locking is consistent with that of the outer edge body, so that the flushing of water flows on two sides to a closure can be effectively reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a cross-sectional view taken along A-A in fig. 1.
Fig. 3 is a sectional view taken along the direction B-B in fig. 1.
Fig. 4 is a schematic plan view of a spout in the present invention.
Fig. 5 is a cross-sectional view taken along the direction C-C in fig. 4.
In the figure, each serial number is represented as:
1-reclamation area, 2-enclosing area, 3-enclosing dyke, 31-outer edge body, 32-inner edge body, 33-dyke core sand, 4-separation dyke, 5-dragon mouth, 6-riprap dam, 7-shore side, 8-locking dam, 9-sand rib soft mattress and 10-concrete interlocking block soft mattress.
Detailed Description
The invention is further described below with reference to examples and figures.
Referring to fig. 1, the present invention includes a dike 3 and a dike 4 dividing a reclamation area 1, one end of the dike 4 is connected with a shore side 7, and the other end is connected with the dike 3 in an intersecting manner, so that the reclamation area 1 is divided into at least three enclosing areas 2, and a tap 5 is arranged in the middle section of the dike 3 in each enclosing area 2.
Referring to FIG. 2, the cross section of the dam 4 is trapezoid, the jacking height of the dam is more than or equal to +5.5m, the slope ratio is 1:1.5-1:2.5, the jacking width is more than or equal to 5m, and the dam is composed of bagged sand.
Referring to fig. 3, the dike 3 according to the present invention is composed of an inner prism 32 on the land side 7 and an outer prism 31 on the water side, and dike core sand 33 is placed between the inner prism 32 and the outer prism 31, and the inner prism 32 and the outer prism 31 are composed of sand bags. The section of the outer prism 31 is trapezoid, the jacking height is more than or equal to +5.5m, the outer slope ratio is 1:3, the inner slope ratio is 1:1, and the jacking width is 5-6 m. The section of the inner prism 32 is trapezoid, the jacking height is more than or equal to +3.8m, the slope ratio is 1:1-1:2, and the jacking width is 3m. The elevation of the core sand 33 of the dyke is more than or equal to +3.0m.
Referring to fig. 4 and 5, the bottom of the opening 5 in the dyke 3 is respectively paved with a sand rib soft mattress 9 and a concrete interlocking block soft mattress 10 from bottom to top. The rows are arranged for preventing the water and waves from being concentrated in the tap openings 5 to cause foundation soil at the positions of the tap openings 5 to wash; the double-layer row body structure is arranged for preventing the foundation soil at the lap joint of the row bodies from being scoured. If foundation soil is once washed, closure difficulty and loss of the closure 5 are very large.
The outer side of the surrounding dike 3 is also provided with a stone throwing dam 6, and the purpose of the stone throwing dam 6 is to prevent wind waves caused by cold tides from damaging the bagged sand outer edge body 31. The distance between the stone throwing dam 6 and the outer edge body 31 of the opening 5 of the dyke 3 is 2-5 m, the elevation of the stone throwing dam 6 is +5.0m, the outer side slope ratio is 1:1.5, the inner side slope ratio is 1:1, and the top width is 1.5m.
A locking dam 8 is also fixedly arranged between the stone throwing dam 6 and the outer edge body 31 of the opening 5 of the dyke 3, and the elevation of the locking dam 8 is consistent with that of the outer edge body 31.
In view of the above-described dike construction suitable for a large tidal range, in the present invention, a method for multi-closure of dikes of the large tidal range includes the steps of:
(1) According to the tidal range and the reservoir capacity of the reclamation area 1, the separation of the enclosing areas 2 and the width of the closure openings 5 are determined, the reclamation area 1 is divided into at least three enclosing areas 2, the closure openings 5 are arranged in the middle section of the enclosing dike 3 in each enclosing area 2, the width of the closure openings 5 is less than or equal to 500m according to the maximum flow velocity of the closure openings 5, and the flow velocity of the closure openings 5 is less than or equal to 3.5m/s.
(2) And the construction of the dyke 3, the dyke 4 and the riprap dam 6 is completed to form a boundary condition for closure of the dragon mouth 5, and a sand rib soft mattress 9 and a concrete interlocking block soft mattress 10 double-layer mattress body are respectively paved on the bottom surface of the dragon mouth 5 from bottom to top.
(3) Meanwhile, closure construction guarantee is completed, material preparation is carried out according to the closure stone throwing amount of the closure opening 5 which is 1.5 times, and the specification of the block stone is 50-500 kg of well-graded rubble; the preparation is carried out according to the amount of 2 times of closure sand of a closure 5, wherein the content of particles with the sand quality being more than 0.075mm is more than 70 percent, and the content of mud is less than 5 percent.
(4) A locking dam 8 is constructed between the riprap dam 6 and the outer edge 31 of the opening 5 of the dike 3, and the elevation of the locking dam 8 is consistent with that of the outer edge 31 of the dike 3.
(5) And when the tide is small, synchronously carrying out flat stone throwing on the two sides of the stone throwing dam 6 at the position of each tap 5, closing and intercepting the stone throwing dams 6 on the two sides of each tap 5, and enabling the height of the stone throwing dam 6 to be 3.5m (above the highest tide level of the small tide).
(6) And (3) continuously heightening the stone slinger 6 at the positions of the openings 5 to ensure that the elevation is up to +5.0m, and simultaneously completing the construction of the outer edge bodies 31 at the two sides of the positions of the openings 5 in the surrounding dike 3 to ensure that the outer edge bodies 31 at the two sides are closed and the elevation is up to +5.0m.
(7) And then respectively completing the construction of the inner prisms 32 and the dyke core sand 33 at the two sides of each of the closure dykes 3, so that the inner prisms 32 and the dyke core sand 33 at the two sides are closed, thereby completing the synchronous closure of a plurality of closure dykes 5.
The closure construction guarantee in the step (3) further comprises 1000m of each surrounding area 2 3 When the nylon net bag stone or the concrete precast block is used for standby and the closure of the stone is impossible due to the fact that the flow speed of the tap 5 is too high, the standby nylon net bag stone or the concrete precast block is thrown immediately, and the closure of the stone is ensured to be completed smoothly.
The closure construction guarantee in the step (3) further comprises 2-3 flat top barges for on-site standby during closure of the closure 5, wherein the total loading capacity is about 5000m 3 And when the stone block is settled on the stone throwing dam 6 or the elevation is reduced under the influence of wind waves, the elevation of the stone throwing dam 6 is maintained to be more than +5.0m in time, so that the stability of the stone throwing dam 6 is ensured.
The step (3) of completing closure construction guarantee further comprises on-site standby sand supply equipment such as a reserved self-priming ship and the like during closure of the closure 5, so that when the sand amount of the sand warehouse is insufficient during closure, the construction standby sand supply for the closure earthwork can be provided, and the continuity, stability and sufficiency of sand supply in the whole construction process are ensured.
In addition, the tap 5 is equipped with a standby slurry pump and a generator set on the construction site, and is replaced immediately once equipment failure occurs. And the bagged sand bag body quantity of the outer side edge body and the inner side edge body of the enclosing dike 3 is reserved according to 1.5 times of the designed section quantity during closure, so that timely replenishment is prevented when the bag body is damaged.
In the closure process of the closure opening 5, synchronous closure of the rock-throwing dam 6 is required to be realized, and the penetration damage of the separation dam 4 caused by water level difference between different surrounding areas 2 is prevented.
Claims (8)
1. The utility model provides a dykes and dams that are applicable to the large tidal range in the reclamation engineering, its characterized in that: the method comprises the steps of dividing a reclamation area into a dike and a separation dike, wherein one end of the separation dike is connected with a shore side, the other end of the separation dike is connected with the dike in an intersecting manner, the reclamation area is divided into at least three surrounding areas, a tap is arranged in the middle section of the dike in each surrounding area, the dike is composed of an inner edge body on the shore side and an outer edge body on the water side, dike core sand is arranged between the inner edge body and the outer edge body, the inner edge body, the outer edge body and the separation dike are composed of bagged sand, a tap in the dike is respectively paved with a sand rib soft row and a concrete interlocking block soft row from bottom to top, a stone dam is further arranged on the outer side of the dike, and a locking dam is fixedly arranged between the stone dam and the outer edge body of the tap of the dike;
the dam multi-closure method comprises the following steps:
(1) Determining the width of a closure zone and the width of a closure opening according to the tide difference and the reservoir capacity of the closure zone, dividing the closure zone into at least three closure zones, arranging the closure opening at the middle section of the closure dike in each closure zone, determining the width of the closure opening to be less than or equal to 500m according to the maximum flow velocity of the closure opening, enabling the flow velocity of the closure opening to be less than or equal to 3.5m/s,
(2) The construction of the surrounding dike, the separating dike and the riprap dam is completed to form the boundary condition of closure of the closure, and the double-layer row bodies of the sand rib soft row and the concrete interlocking block soft row are respectively paved on the bottom surface of the closure from bottom to top,
(3) Meanwhile, closure construction guarantee is completed, material preparation is carried out according to the closure riprap quantity of a closure of 1.5 times, and the specification of the block stone is 50-500 kg of well-graded riprap; preparing materials according to the amount of 2 times of the closure sand, wherein the content of the sand particles with the sand mass of more than 0.075mm is more than 70 percent, the content of the mud is less than 5 percent,
(4) Constructing a locking dam between the stone throwing dam and the outer edge body of the dyke opening, wherein the elevation of the locking dam is consistent with that of the outer edge body of the dyke,
(5) When the tide flood is selected to be smaller, the stone throwing blocks are synchronously carried out on the two sides of the stone throwing dam at each tap position, so that the stone throwing dams on the two sides of each tap are closed and shut off, the height of the stone throwing dam is 3.5m,
(6) Continuously heightening the stone throwing dam at each tap position to make the elevation reach +5.0m, simultaneously completing the construction of the outer prisms at both sides of each tap position in the dyke to make the outer prisms at both sides closed and the elevation reach +5.0m,
(7) And respectively completing the construction of the inner prisms and the dyke core sand at two sides of each closure opening in the dyke, so that the inner prisms and the dyke core sand at two sides of the dyke are closed, and thus, the synchronous closure of a plurality of closure openings is completed.
2. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the section of the outer prism is trapezoid, the jacking height of the outer prism is more than or equal to +5.5m, the outer slope ratio is 1:3, the inner slope ratio is 1:1, and the jacking width is 5-6 m.
3. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the section of the inner prism is trapezoid, the jacking height of the inner prism is more than or equal to +3.8m, the slope ratio is 1:1-1:2, and the jacking width is 3m.
4. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the elevation of the core sand of the dyke is more than or equal to +3.0m.
5. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the section of the separation dike is trapezoid, the jacking height of the separation dike is more than or equal to +5.5m, the slope ratio is 1:1.5-1:2.5, and the jacking width is more than or equal to 5m.
6. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the distance between the stone throwing dam and the outer edge of the dyke opening is 2-5 m, the elevation of the stone throwing dam is +5.0m, the outer side slope ratio is 1:1.5, the inner side slope ratio is 1:1, and the top width is 1.5m.
7. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the closure construction guarantee of the step (3) further comprises that each surrounding area is 1000m 3 When the nylon net bag stone or the concrete precast block is used for standby and the closure of the stone is impossible due to the fact that the closure of the stone is too fast, the standby nylon net bag stone or the concrete precast block is thrown immediately, and the closure of the stone is ensured to be completed smoothly.
8. The dike adapted for large tidal range in a reclamation project according to claim 1, wherein: the closure construction guarantee of the step (3) further comprises 2-3 flat top barges for on-site standby during closure of the closure, wherein the total loading capacity is about 5000m 3 And (3) maintaining the elevation of the stone throwing dam in time to be more than +5.0m when the stone throwing dam is settled or the elevation is reduced due to the influence of wind waves, so that the stability of the stone throwing dam is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027939.0A CN108316236B (en) | 2017-01-16 | 2017-01-16 | Dykes and dams suitable for large tidal range in reclamation engineering and multi-closure method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027939.0A CN108316236B (en) | 2017-01-16 | 2017-01-16 | Dykes and dams suitable for large tidal range in reclamation engineering and multi-closure method thereof |
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| CN108316236A CN108316236A (en) | 2018-07-24 |
| CN108316236B true CN108316236B (en) | 2024-01-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111005349A (en) * | 2019-12-21 | 2020-04-14 | 中交上海航道局有限公司 | Closure steel frame cage structure for closure gap of large-tidal-difference deepwater embankment and closure gap closure construction method |
| CN113897901B (en) * | 2021-11-19 | 2023-02-03 | 中国水利水电第五工程局有限公司 | Construction method for dike in tidal zone based on mud filling pipe bag |
| CN114814990B (en) * | 2022-05-06 | 2023-08-11 | 自然资源部第一海洋研究所 | Device for forecasting and monitoring tidal volume of bay and working method thereof |
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| JP2006045814A (en) * | 2004-08-02 | 2006-02-16 | A Tekku Kk | Raised dam, and existing dam raising method |
| CN202706042U (en) * | 2012-05-08 | 2013-01-30 | 上海市水利工程集团有限公司 | Improved rapid-construction causeway |
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| CN206438468U (en) * | 2017-01-16 | 2017-08-25 | 中交上海航道勘察设计研究院有限公司 | It is applied to the dykes and dams that macrotidal range joins the two sections of a bridge, etc in a kind of project of cultivation |
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| GB2418948B (en) * | 2004-10-08 | 2009-01-07 | Andrew Mountain | Method of scour protection using fabric formwork to resemble rock armour protection |
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| CN202706042U (en) * | 2012-05-08 | 2013-01-30 | 上海市水利工程集团有限公司 | Improved rapid-construction causeway |
| CN104711952A (en) * | 2013-12-13 | 2015-06-17 | 上海勘测设计研究院 | Closure gap protection structure applied to deep beach enclosure and closure method for closure gap protection structure |
| CN206438468U (en) * | 2017-01-16 | 2017-08-25 | 中交上海航道勘察设计研究院有限公司 | It is applied to the dykes and dams that macrotidal range joins the two sections of a bridge, etc in a kind of project of cultivation |
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