CN201785728U - Sand control dam with functions of preventing silt and reducing transverse flow at breakwater gap - Google Patents
Sand control dam with functions of preventing silt and reducing transverse flow at breakwater gap Download PDFInfo
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- CN201785728U CN201785728U CN2010202940767U CN201020294076U CN201785728U CN 201785728 U CN201785728 U CN 201785728U CN 2010202940767 U CN2010202940767 U CN 2010202940767U CN 201020294076 U CN201020294076 U CN 201020294076U CN 201785728 U CN201785728 U CN 201785728U
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- dam
- sand
- dike section
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- sand preventing
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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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Abstract
The utility model provides a sand control dam with functions of preventing silt and reducing transverse flow at a breakwater gap. The sand control dams are disposed on two sides of a sea channel. The end of the sand control dam is provided with the breakwater gap, the sand control dam comprises a wave breaking area dam section and a contracted dam section connected with the wave breaking area dam section, the contracted dam section is a dam section which is contracted to the inside the of sea channel from the wave breaking area dam section, axis pitch of the sand control dam at the wave breaking area dam section ranges from 1000m to 3000m, and pitch of the contracted dam section at the breakwater gap ranges from 600m to 1000m. The sand control dam has the advantages that a dam head section of the sand control dam adopts a submerged breakwater, silt reducing effect is obvious, and transverse flow at the breakwater gap can be greatly reduced so as to be favorable for ships entering or exiting the sea channel. The sand control dam greatly reduces manufacturing cost, provides technical support for mealy sand coast port engineering construction, and is applied to design and construction of mealy sand coast port seat channels of a plurality of port areas.
Description
Technical field
The utility model belongs to a kind of sand preventing dyke structure in harbour or the waterway construction engineering, particularly is applicable to effectively to have the anti-sand preventing dyke that becomes silted up, reduces breakwater gap place crossing current in the port construction of aleuritic texture seashore.
Background technology
On coastlines such as China east area of the Liao River, coextensive with eastern and southern Liaoning Province, Ji Bei, northern Shandong, east in Shandong Province, southern Shandong, northern Suzhou, East Zhejiang province, the silty sand matter seashore that is distributing a large amount of that is scattered, wide shallow, the sediment movement of seashore is active, is the characteristic of aleuritic texture seashore, also once once is being the forbidden zone of port construction.In recent years, at China's silty sand matter seashore, built in some in succession, major port obtained some engineering experiences, also had in addition among harbour on some silty sand matter seashores planning or build.By to the actual operation experience at the design studies at these harbours and part harbour as can be known, the key issue of building the port at silty sand matter seashore is the silt alluvial problem of navigation channel and basin.Therefore, build the harbour, its waters general layout and effectively subtract silt, prevent that the silt measure is vital at silty sand matter seashore.Because the sediment movement of silty sand matter seashore is very complicated, all there is silt alluvial problem at the harbour of this type of seashore construction, how to carry out rational harbour water area layout and to take effectively to subtract the silt measure, become the key issue in the port construction of silty sand matter seashore in conjunction with natural conditions.
For silty sand matter seashore harbour, effectively preventing becoming silted up, subtracting the silt measure is to build sand preventing dyke, and ordinary circumstance is along the construction of both sides, navigation channel.But because mild, the strong alluvial of aleuritic texture seashore seashore zone is broad, need safeguards that the normal sand preventing dyke that uses in navigation channel is very long, thereby make that the investment of whole engineering is very big, become the bottleneck of port construction of aleuritic texture seashore and development to a great extent.Because the setting of sand preventing dyke also makes the crossing current at mouth door place, navigation channel strengthen, be unfavorable for boats and ships turnover navigation channel in addition.
Usually, the crest level of sand preventing dyke is high more, and the effect of sand prevention is good more, but along with the depth of water continues to increase, the section of whole sand preventing dyke is very big, and construction costs is also just very high, and the crossing current at mouthful door place is also bigger.How reasonably determine crest level, can give full play to sand preventing dyke anti-silt, subtract the silt effect, guarantee the normal use in navigation channel, construction costs is reduced as far as possible, be a problem that subtracts the comparison key of silt measure in the port works of aleuritic texture seashore.
In recent years, along with developing rapidly of Chinese national economy and harbour and coastal engineering construction, the demand of carrying out the port works construction at the aleuritic texture seashore is also increasing, by in recent years to the research of aleuritic texture seashore sediment Characteristics and the enforcement of engineering, effectively preventing becoming silted up, subtracting the silt measure is to build sand preventing dyke, and ordinary circumstance is along the construction of both sides, navigation channel.But because of the silty sand matter seashore seashore gradient more slow, the navigation channel is generally longer, it is also longer that the shielding navigation channel reduces the sand preventing dyke of channel silt alluvial, invest also bigger, proportion is also bigger in the port construction investment, therefore, reasonably determines the layout form and the structural shape of sand preventing dyke, economical rationality is feasible again can to guarantee to subtract the silt effect, is the task of top priority.
Summary of the invention
The purpose of this utility model is to arrange on the basis of form at Liang Di " encircling type ", reasonably select structural shape, the elevation of sand preventing dyke to reach arrangement form at Kou Menchu, when guaranteeing anti-silt, subtract the silt effect and reducing mouthful door place crossing current, reduce construction investment as far as possible.
For achieving the above object, the technical solution adopted in the utility model provides a kind of anti-silt that have, reduce the sand preventing dyke of breakwater gap place crossing current, this sand preventing dyke is arranged at the both sides in navigation channel, be provided with a mouthful door in the termination of sand preventing dyke portion, described navigation channel indicates mean high tide, high water level, low water stage and natural underwater gradient line be wherein: this sand preventing dyke includes wave breaking district dike section and the contraction dike section that links to each other with wave breaking district dike section, shrinking the dike section is to mouthful dike section that door shrinks in the navigation channel by wave breaking district dike section, this sand preventing dyke is 1000～3000m at the axis spacing of wave breaking district dike section, and shrinking the dike section is 600～1000m in the Kou Menchu spacing.
Effect of the present utility model is that the dike head section of this sand preventing dyke adopts submerged breakwater, and it is remarkable to subtract the silt effect, and can reduce mouthful crossing current at door place greatly, is beneficial to boats and ships turnover navigation channel.Significantly reduced cost.This has the anti-sand preventing dyke that becomes silted up, reduces breakwater gap place crossing current and has started a kind of pattern that aleuritic texture seashore harbour sand-prevention engineering dike is built, for solid foundation has been established in the further research and the design of the harbour engineering construction of aleuritic texture seashore.In theory with all be all to be a kind of breakthroughs in the engineering practical application.This sand preventing dyke has been applied to obtain good economic benefit and social benefit in the design of silty sand matter seashore harbor approach, the construction such as PORT OF HUANGHUA, Weifang harbor, Bin Zhougang, the wide sharp harbor district of Dongying Port.
Description of drawings
Fig. 1 is the layout schematic diagram of sand preventing dyke structure of the present utility model;
Fig. 2 is a sand preventing dyke crest level schematic diagram of the present utility model;
Fig. 3 adopts the sand preventing dyke structural representation of half submerged breakwater formula for the utility model wave breaking district;
Fig. 4 is for adopting the sand preventing dyke structural representation of submerged breakwater formula beyond the utility model wave breaking district.
Among the figure:
1. the 3. mouthfuls of doors in sand preventing dyke 2. navigation channels, 4. wave breaking district dike sections
5. shrink dike section 6. crest level lines 7. mean high tides 8. natural underwater gradient lines
9. the levee crown 10. that is parallel to natural underwater gradient is steep in the levee crown of natural underwater gradient
11. ground surface protection structure 12. former mud face absolute altitude 13. high water level 14. low water stage
The specific embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the sand preventing dyke structure that has anti-silt, reduces to flow at the breakwater gap place of the present utility model.
At first should study local sediment movement characteristic and movement mechanism, reasonably determine the dike head position of sand preventing dyke according to sediment Characteristics.Of the present utility model have anti-a silt, the sand preventing dyke that reduces breakwater gap place crossing current is arranged at the both sides in navigation channel, described navigation channel 2 indicates mean high tide 4, high water level 13, low water stage 14, natural underwater gradient line 8 and former mud face absolute altitude 12, described sand preventing dyke 1 is arranged at the both sides in navigation channel 2, the termination portion of this sand preventing dyke 1 is provided with a mouthful door 3, this sand preventing dyke 1 includes wave breaking district dike section 4 and the contraction dike section 5 that links to each other with wave breaking district dike section 4, shrinking dike section 5 is the dike sections of being shunk in navigation channel 2 to mouth door 3 by wave breaking district dike section 4, this sand preventing dyke is 1000～3000m at the axis spacing of wave breaking district dike section 4, and shrinking dike section 5 is 600～1000m in Kou Menchu 3 spacings.
Described wave breaking district dike section 4 adopts the sand preventing dyke structure of half submerged breakwater pattern, forms submerged breakwater.Crest level line 6 is arranged near the mean high tide 7, and the levee crown absolute altitude of described contraction dike section 5 is arranged at the low water stage in navigation channel below 14.
The levee crown of described contraction dike section 5 is the levee crown 9 that is parallel to natural underwater gradient line; The levee crown of described contraction dike section 5 is steep in the levee crown 10 of natural underwater gradient line.
The sand preventing dyke that has anti-silt, reduces to flow at the breakwater gap place of the present utility model is achieved in that
As Fig. 2, shown in Figure 3, sand preventing dyke 1 adopts half submerged breakwater structure in wave breaking district dike section 4, and the levee crown absolute altitude is near local mean high tide 7.
As Fig. 2, shown in Figure 4, to the contraction dike section 5 of dike termination, sand preventing dyke 1 adopts the submerged breakwater structure beyond the wave breaking district, and the low water stage that the levee crown absolute altitude of described contraction dike section 5 is arranged at the navigation channel forms submerged breakwater below 14.The levee crown absolute altitude can be parallel to the beach face gradient, and the levee crown that shrinks dike section 5 as sand preventing dyke among Fig. 21 is the levee crown 9 that is parallel to natural underwater gradient line 8.Also can adopt more heavy grade, the levee crown that shrinks dike section 5 as sand preventing dyke among Fig. 21 is steep in the levee crown 10 of natural underwater gradient line 8, and 3 places reduce gradually to the mouth door.
Claims (5)
1. one kind has anti-the silt, reduce the sand preventing dyke of breakwater gap place crossing current, this sand preventing dyke is arranged at the both sides in navigation channel, be provided with a mouthful door in the termination of sand preventing dyke portion, described navigation channel indicates mean high tide, high water level, low water stage and natural underwater gradient line, it is characterized in that: this sand preventing dyke (1) includes wave breaking district dike section (4) and the contraction dike section (5) that links to each other with wave breaking district dike section (4), shrinking dike section (5) is to mouthful dike section that door (3) shrinks in navigation channel (2) by wave breaking district dike section (4), this sand preventing dyke is 1000～3000m at the axis spacing of wave breaking district dike section (4), and shrinking dike section (5) is 600～1000m in Kou Menchu (3) spacing.
2. sand preventing dyke according to claim 1, it is characterized in that: the levee crown absolute altitude of described wave breaking district dike section (4) is arranged between the high water level (13) and low water stage (14) in navigation channel, form half submerged breakwater, the crest level line (6) of this sand preventing dyke (1) is arranged near the mean high tide (7).
3. sand preventing dyke according to claim 1 is characterized in that: the levee crown absolute altitude of described contraction dike section (5) is arranged at below the low water stage (14) in navigation channel, forms submerged breakwater.
4. sand preventing dyke according to claim 1 is characterized in that: the levee crown of described contraction dike section (5) is for being parallel to the levee crown (9) of natural underwater gradient line (8).
5. sand preventing dyke according to claim 1 is characterized in that: the levee crown of described contraction dike section (5) is suddenly in the levee crown (10) of natural underwater gradient line (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202940767U CN201785728U (en) | 2010-08-17 | 2010-08-17 | Sand control dam with functions of preventing silt and reducing transverse flow at breakwater gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202940767U CN201785728U (en) | 2010-08-17 | 2010-08-17 | Sand control dam with functions of preventing silt and reducing transverse flow at breakwater gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201785728U true CN201785728U (en) | 2011-04-06 |
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ID=43817699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202940767U Expired - Lifetime CN201785728U (en) | 2010-08-17 | 2010-08-17 | Sand control dam with functions of preventing silt and reducing transverse flow at breakwater gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201785728U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373691A (en) * | 2010-08-17 | 2012-03-14 | 中交第一航务工程勘察设计院有限公司 | Sand protecting dike with functions of preventing silt and reducing cross flow at breakwater gap |
| CN103397615A (en) * | 2013-07-05 | 2013-11-20 | 河海大学 | Design method for preventing and reducing silt in construction field of encircling type port area |
| WO2024021295A1 (en) * | 2022-07-25 | 2024-02-01 | 中国港湾工程有限责任公司 | Island type breakwater |
-
2010
- 2010-08-17 CN CN2010202940767U patent/CN201785728U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373691A (en) * | 2010-08-17 | 2012-03-14 | 中交第一航务工程勘察设计院有限公司 | Sand protecting dike with functions of preventing silt and reducing cross flow at breakwater gap |
| CN103397615A (en) * | 2013-07-05 | 2013-11-20 | 河海大学 | Design method for preventing and reducing silt in construction field of encircling type port area |
| WO2024021295A1 (en) * | 2022-07-25 | 2024-02-01 | 中国港湾工程有限责任公司 | Island type breakwater |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |