CN114737525B - Cofferdam-free dredger fill foundation and rapid Liu Chuitian method - Google Patents
Cofferdam-free dredger fill foundation and rapid Liu Chuitian method Download PDFInfo
- Publication number
- CN114737525B CN114737525B CN202210370557.9A CN202210370557A CN114737525B CN 114737525 B CN114737525 B CN 114737525B CN 202210370557 A CN202210370557 A CN 202210370557A CN 114737525 B CN114737525 B CN 114737525B
- Authority
- CN
- China
- Prior art keywords
- foundation
- soil
- cofferdam
- hydraulic
- chuitian
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- E02B3/18—Reclamation of land from water or marshes
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Landscapes
- 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)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a dredger fill foundation without cofferdam and a rapid speed forming Liu Chuitian method, according to the scheme, a soil layer with higher strength in a soil taking area is selected as dredger fill undisturbed soil, the operation parameters of a cutter suction dredger are regulated, the dredger fill undisturbed soil is cut into a block-shaped mud cake, and the block-shaped mud cake keeps the undisturbed soil strength; after the hydraulic reclamation, the hydraulic reclamation foundation is formed by piling up the agglomerate mud cakes, the detention water body in the hydraulic reclamation soil exposed above the water surface is rapidly discharged during the falling period of the tidal level, the foundation naturally subsides and compacts, and the bearing capacity of the hydraulic reclamation foundation can be rapidly increased in a short time, so that the hydraulic reclamation soil body can be rapidly landed under the condition without cofferdam. The cofferdam-free rapid forming Liu Chuitian scheme provided by the invention does not need to build a cofferdam, fully utilizes the original soil strength of a soil layer for hydraulic reclamation, realizes rapid increase of the foundation strength after hydraulic reclamation and improvement of the overall stability of the hydraulic reclamation foundation, and has the characteristics of high hydraulic reclamation land forming efficiency, easiness in implementation and low cost.
Description
Technical Field
The invention relates to the technical field of soft soil foundation engineering, in particular to a dredger fill foundation construction scheme without cofferdam.
Background
With the continuous expansion of perisea land construction projects, more and more fine granular soil, such as silty clay, silt and the like, appears in dredger fill. In order to facilitate the transportation, the traditional hydraulic filling mode is to completely destroy hydraulic filling undisturbed soil so as to reduce the transportation difficulty of slurry; however, the strength of the foundation formed by the hydraulic filling is low, and because the permeability of fine granular soil is poor, the consolidation is slow, and the foundation bearing capacity requirement of the hydraulic filling area can be met by sometimes carrying out foundation treatment for a plurality of times after the hydraulic filling of soil body, the construction cost of engineering is high, and the construction progress is delayed. In addition, cofferdam is always a precondition for land construction by hydraulic reclamation, and the main reasons for constructing the cofferdam are as follows:
(1) Because the strength of the fine particle dredger fill is generally lower and is in a flowing state, cofferdam is required to be arranged around the dredger fill area so as to reduce the loss of the dredger fill in the land construction project;
(2) The dredger fill foundation is heightened layer by layer, disasters such as landslide and the like tend to easily occur, and the cofferdam plays a role of a gravity retaining wall;
(3) The hydraulic filling engineering in coastal areas of the river requires the construction of cofferdams, and resists the long-term brushing damage of wave currents, in particular to extreme sea wave conditions.
Meanwhile, the construction cost of the cofferdam accounts for a considerable proportion of the construction cost of the seagoing land construction engineering, and how to reduce the construction cost of the cofferdam is always a difficult point in hydraulic filling engineering and man-made island construction engineering and is also a problem to be solved urgently.
Aiming at the problems, how to effectively improve the construction efficiency of the seagoing land construction engineering and reduce the construction cost is a problem to be solved in the field.
Disclosure of Invention
Aiming at the problems of high construction cost and slow construction progress caused by low strength, slow consolidation and long-time foundation treatment after hydraulic filling of fine particle hydraulic filling foundation in the existing hydraulic filling scheme of the hydraulic filling land technology of the intertidal zone and the intertidal zone, the invention aims to provide a rapid cofferdam-free Liu Chuitian scheme, which is capable of realizing no cofferdam construction, effectively improving the overall stability of the formed hydraulic filling foundation, and is high in hydraulic filling land forming efficiency, easy to implement and low in cost.
In order to achieve the above purpose, the invention provides a dredger fill foundation without cofferdam, which is formed by stacking lump mud cakes directly without arranging cofferdams; the block-shaped mud cake is formed by cutting an original soil layer.
Further, the foundation naturally settles and compacts under the dead weight.
Further, the minimum side length of the lump mud cake soil blocks is not less than 3cm.
Furthermore, the stacked bodies of the agglomerate mud cakes in the dredger fill foundation are mutually embedded and suspended in different shapes to form larger gaps, and the gaps have higher communication rate.
Further, the liquid limit index of the undisturbed soil in the undisturbed soil layer is lower than 0.6.
In order to achieve the above purpose, the invention also provides a rapid forming Liu Chuitian method without cofferdam, which does not build cofferdam, forms a block-shaped mud cake by cutting undisturbed soil in a soil layer for hydraulic reclamation, and performs hydraulic reclamation on a hydraulic reclamation area by using the block-shaped mud cake.
Furthermore, the rapid prototyping Liu Chuitian method further comprises a step of determining the plane range and the burial depth of the hydraulic reclamation soil.
Further, the rapid prototyping Liu Chuitian method further comprises the step of cleaning the soft soil covered on the hydraulic filling soil area.
Furthermore, in the rapid land-forming hydraulic filling method, the block-shaped mud cakes formed by cutting are directly conveyed to a hydraulic filling area, a hydraulic filling soil foundation is formed by stacking the block-shaped mud cakes, and mud water is discharged from the foundation during hydraulic filling.
Furthermore, when the rapid speed up Liu Chuitian method is used for blowing and filling the blowing and filling area based on the lump mud cakes, the ground of the outlet position is positioned above the water surface, and the high tide level is allowed to be submerged.
Furthermore, when the rapid speed up Liu Chuitian method is used for blowing and filling the blowing and filling area based on the block-shaped mud cakes, the blowing and filling process is carried out along the coast, and the blowing and filling process is firstly carried out on the coast side and then is carried out to extend to the sea side; and during the hydraulic filling, for each hydraulic filling position, after the accumulated soil exceeds the design elevation of the hydraulic filling, the outlet position of the hydraulic filling pipeline is adjusted, the hydraulic filling of the next position is carried out, and the step is repeated until the hydraulic filling of the whole area is completed.
Furthermore, the rapid prototyping Liu Chuitian method further comprises the step of leveling the dredged fill mud cake accumulation body 2-5 days after dredged fill.
The rapid forming Liu Chuitian scheme without cofferdam provided by the invention does not need to build a cofferdam, fully utilizes the original soil strength of the soil layer for hydraulic reclamation, realizes rapid increase of the foundation strength after hydraulic reclamation and improvement of the integral stability of the hydraulic reclamation foundation, has the characteristics of high hydraulic reclamation land forming efficiency, easiness in implementation and low cost, and can effectively overcome the problems existing in the prior art.
Furthermore, according to the cofferdam-free rapid speed up Liu Chuitian scheme provided by the invention, a soil layer with higher strength in a soil taking area is selected as hydraulic filling original soil, the original soil strength of the hydraulic filling original soil is fully utilized, the hydraulic filling original soil is cut into a block-shaped mud cake, and hydraulic conveying is carried out through a mud conveying pipeline, so that hydraulic filling is directly carried out to a destination. Since the dredged soil is not completely crushed, the dredged soil is a pile of agglomerated mud cakes, which maintain the strength characteristics of the undisturbed soil. After the hydraulic reclamation, the hydraulic reclamation foundation is formed by piling up the agglomerate mud cakes, the detention water body in the hydraulic reclamation soil exposed above the water surface is rapidly discharged during the falling period of the tidal level, the foundation is naturally settled and compacted, and the bearing capacity of the hydraulic reclamation foundation can be rapidly increased in a short time, so that the hydraulic reclamation soil body can be rapidly landed under the condition without a cofferdam, the engineering construction cost is obviously reduced, and the construction progress is accelerated.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of a hydraulic reclamation land structure and stability enhancement in accordance with the present invention;
FIG. 2 is a schematic diagram of the basic flow of the rapid land reclamation method of the present invention;
FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 4 is a schematic layout view of a mud pipe according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
In the hydraulic filling land-forming process of the intertidal zone and the intertidal zone, the technical thought that the cofferdam needs to be built in the conventional scheme is broken through, the hydraulic filling land-forming scheme based on the cofferdam is abandoned, and the rapid land-forming hydraulic filling process without the cofferdam is innovated.
When the cofferdam-free rapid land hydraulic filling process is implemented, a cofferdam is not required to be built, the original soil strength of a hydraulic filling soil layer is fully utilized, the original soil in the hydraulic filling soil layer is cut to form a block-shaped mud cake, the block-shaped mud cake is transmitted to a region to be hydraulic filled, and the hydraulic filling region is directly hydraulic filled with the block-shaped mud cake; therefore, the rapid increase of the foundation strength after the hydraulic filling is finished and the improvement of the overall stability of the hydraulic filling foundation are realized, and the hydraulic filling foundation has the characteristics of high hydraulic filling land forming efficiency, convenience in implementation and low cost.
Referring to fig. 1, an exemplary diagram of a dredger fill foundation formed by a cofferdam-free rapid land-based hydraulic reclamation process is shown.
The dredger fill foundation 100 is formed by stacking the block-shaped mud cakes 110 directly without providing a cofferdam; while the lump-shaped mud cake 110 is cut from an undisturbed soil layer.
By way of example, the agglomerate mud cake 110 is formed by cutting an undisturbed soil layer by the reamer of a cutter suction dredger. The briquette-shaped mudcake 110 basically maintains the physical and mechanical properties of the undisturbed soil, such as dry density, cohesion, internal friction angle, and the like; meanwhile, the dead weight of the agglomerate mud cake 110 reaches 100-1000 g, the shape is irregular, and the minimum side length is not less than 3cm; the agglomerated mud cake 110 with the structure is not easy to be taken away under the conventional tide action, and is easier to be filled into land.
In this scheme, when the agglomerate mud cakes 110 are piled up to form corresponding piled up bodies (i.e. the dredger fill foundation 100), mud cakes with different shapes are mutually embedded and overhead to form larger gaps, and the gaps have higher communication rate, the drainage performance of the mud cakes can be up to more than 100 times of that of the similar clay homogeneous foundation, and the mud cakes have very strong drainage performance.
In this scheme when confirming undisturbed soil layer, cover soft soil clearance to the soil sampling district, fully expose the undisturbed soil that is used for hydraulic filling, hydraulic limit index of hydraulic filling undisturbed soil should be less than 0.6 to make mud cake intensity satisfy the requirement of difficult bending deformation, ensure that mud cake is built on stilts to form great space.
By way of illustration, when the scheme is used for forming a dredger foundation by hydraulic reclamation, cutting in a soil layer for hydraulic reclamation can be realized through the adjustment of excavation and conveying working parameters of a cutter suction dredger, and the agglomerated mud cake is transmitted to and directly piled up to form the dredger foundation.
Specifically, the cutter suction dredger is used for cutting the dredged original soil into the block-shaped mud cakes by adjusting the excavation and conveying operation parameters, and the hydraulic conveying is carried out through the mud conveying pipeline to directly dredge to a destination (such as a region to be dredged). The dredged soil (i.e. the agglomerated mud cake) is conveyed by the cutter suction dredger and sucked into the water body of the slurry pump, but the original soil layer is mainly cut into the agglomerated mud cake, so that the mud content and the mud consistency of the slurry are very low, and the slurry can be easily discharged from the foundation on the dredged soil foundation formed by stacking the agglomerated mud cake.
Further, when a dredger fill foundation is formed by piling up the agglomerated mud cakes which are excavated and conveyed to the dredger fill area, most of the mud water generated in the conveying process is discharged from the foundation during the dredger fill. In addition, the dredger fill foundation formed by accumulation is quickly discharged when the tidal level falls back, and meanwhile, the foundation naturally settles and compacts under the dead weight, so that the bearing capacity of the dredger fill foundation is also continuously increased, the integral stability of the dredger fill foundation is also improved, and the rapid land formation of dredger fill under the condition without cofferdam is realized.
On the basis of the scheme, the scheme further provides a complete construction process of the cofferdam-free rapid land-based hydraulic reclamation process, so that the scheme is further described.
Referring to fig. 2, the implementation of the cofferdam-free rapid land reclamation process may include the following steps:
in the step, according to survey data of a soil taking area, a soil layer with larger cohesive force, uniform distribution and larger thickness in a direct shear rapid shear test is selected as hydraulic filling undisturbed soil, and the liquid limit index of the hydraulic filling undisturbed soil is lower than 0.6.
The soil layer with higher strength in the soil taking area is selected as the hydraulic filling undisturbed soil, so that the rigidity of a mud cake formed by excavation and cutting is ensured to be enough, and the mud cake is not easy to bend and deform.
Meanwhile, in the scheme, the liquid limit index of the preferable hydraulic filling undisturbed soil is lower than 0.6, so that the strength of the mud cake meets the requirement of difficult bending deformation, and the mud cake is ensured to form a larger gap in an overhead manner.
Step 2, cleaning the covered soft soil:
in the step, the upper covering soft soil of the hydraulic filling undisturbed soil in the determined soil taking area is cleaned, the hydraulic filling undisturbed soil is fully exposed, and the liquid limit index of the hydraulic filling undisturbed soil is lower than 0.6.
The specific scheme adopted for cleaning is not limited, and can be determined according to actual requirements.
Step 3, adjusting construction parameters:
in the step, the cutter suction dredger is used for trial excavation of the selected dredger, and soil in the dredger is enabled to be kept in a block shape by adjusting the model and the installation mode of the reamer head and the cutter teeth, the rotation speed of the reamer, the transverse moving speed, the running power of the dredger pump and the mud flow rate in the dredger pipeline.
By way of example, the cutter suction dredger herein includes a dredge pump, a reamer and a transfer channel; after the dredger is in place, a main positioning pile falling on the center line of the dredging groove is used as the rotation center of the dredger body, and the reamer swings transversely and reciprocally left and right in the width of the dredging groove under the action of transverse movement, so that the reamer cuts the soil layer of the dredging section in layers; and then the left-right traversing winch is adjusted, the speed and the stop of winding and unwinding the traversing cable are adjusted, so that the moving speed of the reamer is changed, and the cutting positions of the reamer on the section are changed.
Through test data comparison, the scheme preferably determines the dredger operation parameters as follows:
by 1450m 3 A cutter suction dredger of/h, a 38DS reamer, wherein the diameter of the reamer is 2.755m, the reamer is 6-arm reamer, and 8 38DS chisel teeth are unevenly arranged on each cutter arm; the rotating speed of the reamer is 30rpm, the transverse moving speed is 10-15 m/min, the power of the mud pump is 1250kW, and the mud conveying flow rate is 4.5-5.3 m/s.
The operation parameters are such that soil in the hydraulic filling slurry can keep the block shape, and the minimum side length of the soil block in the final formed block-shaped mud cake foundation is 3.0-10 cm, and the self weight is large and the shape is irregular.
Step 4, optimizing a layout scheme of the outlet of the mud pipe:
according to the construction parameters determined in the step 3, under the condition that a cofferdam is not built, the cutter suction dredger is used for directly blowing and filling original soil to a designed area in a lump mud cake mode, the ground at the drainage outlet is positioned above the water surface, so that the slurry water body retained between mud cakes is conveniently and rapidly discharged, sedimentation and compaction are realized under the action of dead weight, and even if the water body is submerged at a high tide level, the water body cannot be flushed away by tide water.
In addition, when the hydraulic filling is carried out, the hydraulic filling is carried out along the coast, firstly, the hydraulic filling is carried out on one side of the coast, and then the hydraulic filling is carried out on one side of the sea; and when in hydraulic filling, the outlet position of the hydraulic filling pipeline can be adjusted for each hydraulic filling position after the accumulated soil exceeds the design elevation of hydraulic filling, hydraulic filling of the next position is carried out, and the step is repeated until the hydraulic filling of the whole area is completed. Thus, hilly mud cake stacking bodies are formed at the outlet positions of a plurality of mud conveying pipes, and mud cake dredger fill soil with a certain foundation bearing capacity is formed through the processes of draining, evaporation, dehydration and sedimentation along with the continuous discharge of the stagnant mud water in the mud cake dredger fill soil.
Step 5, leveling the hydraulic filling area:
after the hydraulic filling, when the construction machine can safely enter the field, leveling the filled area.
The steps 2 and 3 may be performed simultaneously in a partitioned manner without affecting the safety of construction, and the steps 4 and 5 may be performed simultaneously in a partitioned manner.
The implementation of the solution of the present invention will be described below by way of a specific application example.
Referring to fig. 3, a shore ecological green space is to be built on the sea side of the built seawall, the beach land is about 2.0m higher before the construction, and the shore ecological green space is between the local average high tide level and the average low tide level, and belongs to the intertidal zone. On the basis of the existing mud surface, the elevation of the soil body on the sea side of the sea wall is filled to the elevation of 7.5m. The width of the seashore green land is 170-200 m, and the slope is naturally formed by the hydraulic filling soil body outside the ecological green land.
Accordingly, the cofferdam-free rapid land reclamation process provided by the scheme is adopted in the embodiment to realize rapid and low-cost construction.
Referring to fig. 3 and 4, the specific steps of performing rapid cofferdam-free construction Liu Chuitian in this example are as follows:
according to survey data of the soil sampling area, powdery clay below the surface layer of the soil sampling area is selected as dredging undisturbed soil, the liquid limit index of soil body is about 0.5, and the average value of cohesive force is 32kPa.
Step 2, cleaning the covered soft soil:
after the original soil layer is determined to be dredged, the dredger is used for dredging other soil layers on the surface layer of the soil taking area, and the dredger is conveyed to the spoil area to fully expose the original soil to be dredged.
Step 3, adjusting construction parameters:
the cutter suction dredger is used for carrying out trial excavation on the selected hydraulic filling undisturbed soil, and through repeated comparison tests, the operation parameters of the dredger are determined as follows: by 1450m 3 The cutter suction dredger comprises a cutter suction dredger, a 38DS reamer and a cutter diameter of 2.755m, wherein the cutter is a 6-arm reamer, and 8 38DS chisel teeth are unevenly arranged on each cutter arm. The rotating speed of the reamer is 30rpm, the transverse moving speed is 10-15 m/min, the power of the mud pump is 1250kW, and the mud conveying flow rate is 4.5-5.3 m/s; the minimum side length of the soil blocks in the block-shaped mud cake foundation is 3.0-10 cm after random sampling.
Step 4, optimizing a layout scheme of the outlet of the mud pipe:
and (3) excavating the hydraulic filling undisturbed soil by using a cutter suction dredger under the condition of not building a cofferdam according to the construction parameters selected in the step (3), and directly hydraulic filling the hydraulic filling undisturbed soil to a designated area in a lump mud cake mode.
In the hydraulic filling, the hydraulic filling is required from the shore side to the sea side. In addition, when the soil body to be piled up exceeds the appointed elevation of the hydraulic filling, the outlet position of the hydraulic filling pipeline can be adjusted, the hydraulic filling pipeline is lengthened to the next point, and the step is repeated until the hydraulic filling of the whole area is completed.
As shown in fig. 4, the main pipe of the mud pipe is arranged in parallel along the established seawall at a distance of about 20-50 m from the seawall. And (3) when the dredger fill at the point (1) is piled up to exceed the designed elevation, lengthening the mud conveying pipeline to the point (2) for continuous dredger fill, and the like.
If the soil body of the hydraulic filling of the No. 1 point cannot reach the designed width (such as 170-200 m) under the condition of naturally forming a slope, a branch pipe can be led out from the No. 1 point to one side of the sea according to the requirement, and the hydraulic filling is carried out at the (1) -branch point.
Step 5, leveling the hydraulic filling area:
after the hydraulic filling is completed for 2-5 days, the hydraulic filling foundation formed by piling up the block-shaped mud cakes is subjected to the processes of draining, evaporating, dehydrating and settling, the surface layer of the foundation forms a hard shell layer, and the construction machine can safely enter the field to level the hydraulic filling area.
According to the embodiment, the original soil strength of the hydraulic filling soil is fully utilized, under the condition that a cofferdam is not required to be built, the original soil is cut into the block-shaped mud cakes and then is conveyed to the region needing hydraulic filling, and the block-shaped mud cakes are piled to form a hydraulic filling foundation, so that the rapid increase of the foundation strength after hydraulic filling and the improvement of the overall stability of the hydraulic filling foundation are realized, and the hydraulic filling method has the characteristics of high hydraulic filling land forming efficiency, convenience in implementation and low cost.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The dredger fill foundation without the cofferdam is characterized in that the dredger fill foundation is formed by stacking the lump mud cakes directly without the cofferdam; the block-shaped mud cake is formed by cutting a cutter suction dredger in an original soil layer, and is conveyed to a region to be dredged and filled, and is directly piled up to form a dredged fill foundation; the liquid limit index of the undisturbed soil in the undisturbed soil layer is lower than 0.6; the minimum side length of the agglomerate mud cake soil blocks is not less than 3cm, and the stacking bodies of the agglomerate mud cakes in the dredger fill foundation are mutually embedded and overhead mud cakes with different shapes to form larger gaps; the formed dredger fill foundation is quickly discharged from the stagnant water body in the dredger fill exposed above the water surface during the falling period of the tidal level, and the foundation naturally settles and compacts under the dead weight, so that the bearing capacity of the dredger fill foundation is also continuously increased.
2. The cofferdam-free dredger fill foundation of claim 1, wherein the voids in the dredger fill foundation have a higher connectivity.
3. The rapid land-forming hydraulic reclamation method without the cofferdam is characterized in that the cofferdam is not built, a cutter suction dredger is used for cutting in an original soil layer in a hydraulic reclamation soil layer to form a block-shaped mud cake, the block-shaped mud cake is transmitted to a region to be hydraulic reclamation, the block-shaped mud cake is directly piled to form a hydraulic reclamation soil foundation, and the liquid limit index of the original soil in the original soil layer is lower than 0.6; the minimum side length of the agglomerate mud cake soil blocks is not less than 3cm, and the stacking bodies of the agglomerate mud cakes in the dredger fill foundation are mutually embedded and overhead mud cakes with different shapes to form larger gaps; the formed dredger fill foundation is quickly discharged from the stagnant water body in the dredger fill exposed above the water surface during the falling period of the tidal level, and the foundation naturally settles and compacts under the dead weight, so that the bearing capacity of the dredger fill foundation is also continuously increased.
4. A method of cofferdam free rapid prototyping Liu Chuitian as set forth in claim 3 wherein said method of rapid prototyping Liu Chuitian further comprises the step of determining the planar extent of the hydraulic reclamation soil and its burial depth.
5. A method of rapid cofferdam free speed up Liu Chuitian as set forth in claim 3, wherein said method of rapid speed up Liu Chuitian further comprises the step of cleaning the area of hydraulic fill with weak soil.
6. A method for rapid prototyping Liu Chuitian of no cofferdam in accordance with claim 3 wherein the method for rapid prototyping comprises the steps of delivering cut and formed mass mud cake directly to a reclamation area, forming a reclamation foundation by piling up the mass mud cake, and discharging the mud water from the foundation during reclamation.
7. A rapid cofferdam free method Liu Chuitian as claimed in claim 3, wherein said rapid method Liu Chuitian is based on a mass of mud cakes to blow fill the area, the bottom of the drain outlet being above the water surface, allowing for flooding at high tide level.
8. A rapid cofferdam-free method Liu Chuitian as claimed in claim 3, wherein said rapid method Liu Chuitian is performed along the coast when the hydraulic filling is performed on the hydraulic filling area based on the lump-shaped mud cake, and the hydraulic filling is performed on the coast side and then extended to the sea side; and during the hydraulic filling, for each hydraulic filling position, after the accumulated soil exceeds the design elevation of the hydraulic filling, the outlet position of the hydraulic filling pipeline is adjusted, the hydraulic filling of the next position is carried out, and the step is repeated until the hydraulic filling of the whole area is completed.
9. A method of cofferdam free rapid prototyping Liu Chuitian as set forth in claim 3 wherein said method of rapid prototyping Liu Chuitian further comprises the step of leveling the blow-filled mudcake stack 2 to 5 days after blow-filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210370557.9A CN114737525B (en) | 2022-04-10 | 2022-04-10 | Cofferdam-free dredger fill foundation and rapid Liu Chuitian method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210370557.9A CN114737525B (en) | 2022-04-10 | 2022-04-10 | Cofferdam-free dredger fill foundation and rapid Liu Chuitian method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114737525A CN114737525A (en) | 2022-07-12 |
| CN114737525B true CN114737525B (en) | 2023-07-07 |
Family
ID=82280094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210370557.9A Active CN114737525B (en) | 2022-04-10 | 2022-04-10 | Cofferdam-free dredger fill foundation and rapid Liu Chuitian method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737525B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1023024A2 (en) * | 1980-10-29 | 1983-06-15 | Киевский Отдел Всесоюзного Научно-Исследовательского Института Гидромеханизации,Санитарно-Технических И Специальных Строительных Работ | Method of erecting hydraulic fill earth structures |
| RU2166638C1 (en) * | 1999-12-02 | 2001-05-10 | Акционерное общество "Уральский научно-исследовательский и проектный институт галургии" | Method of gob hydraulic fill |
| CN104846787B (en) * | 2015-04-01 | 2016-10-05 | 广西建工集团第五建筑工程有限责任公司 | Construction method for carrying out sand-blowing sea-filling land-making in shallow sea area by using cutter suction dredger |
| CN109989386A (en) * | 2019-04-03 | 2019-07-09 | 北京城建集团有限责任公司 | Open type is without cofferdam coral sand islands and reefs hydraulic reclamation system and its construction method |
-
2022
- 2022-04-10 CN CN202210370557.9A patent/CN114737525B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114737525A (en) | 2022-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105672199B (en) | A kind of dock structure and its construction method suitable for silt coast | |
| CN104846787A (en) | Construction method for carrying out sand-blowing sea-filling land-making in shallow sea area by using cutter suction dredger | |
| CN110984213A (en) | Offshore wind power single pile-friction cone composite foundation and construction method thereof | |
| CN102011391A (en) | Reinforcement processing method of soft foundation | |
| CN103374900B (en) | Build the gravity type quay on muddy foundation and construction method thereof | |
| CN110952528A (en) | Construction method of cement-soil underground continuous wall under complex geological conditions | |
| CN104711968A (en) | Negative-pressure three-dimensional flow-guiding disturbance impact solidification dredger filling method | |
| CN106884427A (en) | Immersed tube tunnel and immersed tube tunnel changeover portion soft soil foundation reinforcing method under water | |
| CN112663558B (en) | Construction process for excavating weathered rock in inland river harbor pool | |
| CN114737525B (en) | Cofferdam-free dredger fill foundation and rapid Liu Chuitian method | |
| CN211898504U (en) | Offshore wind power single pile-friction cone composite foundation | |
| CN201778330U (en) | Clay water-stop curtain wall | |
| CN112962525A (en) | Dredged soil filling and diking structure and filling bag diking method thereof | |
| CN202626934U (en) | Gravity wharf built on silty foundation | |
| CN108277794A (en) | A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system | |
| CN107034906A (en) | Marine shallow slotting formula steel cylinder foundation trench excavates altering fill method | |
| CN104727325B (en) | A kind of method of construction of polder sea wall | |
| CN114351653B (en) | Coastal hydraulic filling foundation and salt removing method thereof | |
| CN111197300B (en) | Earth-rock cofferdam back slope type seepage-proofing dam and reverse construction method | |
| CN216427867U (en) | Composite roadbed based on high-water-content thick soft soil layer | |
| CN100582382C (en) | Process for constructing quickly consolidated temperory horizontal platform by picking clay of lake bottom | |
| CN108442356A (en) | The construction technology of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system | |
| CN114960544B (en) | U-shaped sliding dike construction method for new hydraulic reclamation land area water system communication channel | |
| CN214460086U (en) | Long-distance double-track double-bucket truss type diker | |
| CN117344692B (en) | Silt bag layout method taking underground fresh water storage into consideration by artificial island |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |