CN211498714U

CN211498714U - Multistage scour protection dyke pond

Info

Publication number: CN211498714U
Application number: CN201922138726.2U
Authority: CN
Inventors: 许峰; 曾甄; 李水泷; 邵燕华; 马世领; 其他发明人请求不公开姓名
Original assignee: Zhejiang Design Institute of Water Conservancy and Hydroelectric Power
Current assignee: Zhejiang Water Resources And Hydropower Survey And Design Institute Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-09-15
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a multistage scour protection dyke pond. The filling material of the embankment mainly comprises cast stones, a plurality of stages of platforms are arranged on the outer slope of the embankment, and anti-impact sheet piles are arranged between the platforms, so that a combined anti-impact body is formed between the platforms. The utility model discloses dwindle dyke body section width, improved the whole scour resistance and the stability factor in dyke pond, protected people's life and property safety.

Description

Multistage scour protection dyke pond

Technical Field

The utility model relates to a coast or river bank retaining structure, concretely relates to adopt multistage scour protection section structural style's dyke pond, be particularly suitable for to build and locate the deep mud flat ground of coastal silt matter, and tidal height, unrestrained, trend wash out the less than dyke pond of hydrology, geological conditions such as violent.

Background

The ocean and the river bring wealth to human beings and bring certain flood threat to the human beings. Due to their size and time uncertainty, people living in water are often infested with floods. The construction of the dike greatly reduces the risk of suffering flood disasters, so the stability of the structure of the dike is directly related to the flood control capability of the river bank and the coast, the safety of the slope foot structure of the dike is important for the overall stability of the dike body, once the scouring problem of the slope foot of the dike occurs, the slope is likely to be unstable, the dike is dug, serious consequences are caused, and the scour prevention design of the slope foot of the dike is particularly important.

Taking the long triangular area as an example, in the embankment project which is built or built at present, the structure of the embankment project is that the embankment body is made of riprap, a backwater slope is made of silt soil and air, a waterside slope is made of block stones or precast blocks for slope protection, and the outermost side of the waterside slope is provided with a large stone anti-impact protection foot. The traditional embankment construction process is mature, the construction cost is low, the mining rate is high, but the use limitation and a plurality of defects exist: 1. the anti-scouring ability is weak. Traditional dyke pond structure adopts to throw and pack the bold stone banket scour protection more, and relative dispersion and independence between the piece stone lacks the wholeness, only relies on self weight to remain stable, when receiving abominable trend and wave to erode the influence, and the brush is drawn to the part piece stone unstability that often takes place and then leads to large tracts of land pond foot, and then the influence enlarges, leads to the bank protection unstability, dyke pond damage. 2. The section size is big, and the investment is high. The coating surface of the cross section of the embankment is deepened and increased, the stone space throwing and filling amount is large, and the engineering investment is increased in geometric times. 3. The later maintenance cost is high. After the flood season of each year, the dam protection feet need to be maintained and reinforced in time, and the block stones need to be added and thrown, so that the method is repeated and the maintenance capital requirement is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multistage scour protection dyke pond to prior art's not enough. According to the embankment, the anti-scouring sheet piles are arranged among the multiple stages of platforms, so that a combined anti-scouring body is formed between the platforms, the width of the section of the embankment body is reduced, the overall anti-scouring capacity and stability coefficient of the embankment are improved, and the life and property safety of people is protected.

The utility model adopts the technical proposal that:

a multi-stage scour-proof embankment is characterized in that the filling material of an embankment body is mainly cast stones, multi-stage platforms are arranged on the outer slope of the embankment, and scour-proof sheet piles are arranged between the platforms.

Furthermore, the height difference between adjacent platforms can be controlled to be 2.0-3.0 m according to the stability requirement.

Further, when the platform is in an underwater construction environment, the membrane bag concrete pouring can be adopted.

Furthermore, the upper part of the platform can be provided with prefabricated blocks and special-shaped blocks as stabilizing and wave-dissipating measures.

Furthermore, the anti-scouring sheet piles can adopt densely arranged prefabricated H-shaped sheet piles.

The utility model has the advantages that:

1. the multi-stage platform structure is adopted to form an anti-impact complex, so that even if the anti-impact complex is partially damaged under the influence of extreme weather, the safe operation of the pond body can be still ensured, the problem of weak anti-impact capability of the traditional embankment pond is solved, and the anti-impact stability of the embankment pond is improved.

2. The embankment adopts a close-packed sheet pile structure, has good anti-impact performance and good rigidity, can be used as a soil retaining facility, increases the vertical fall between adjacent platforms and is not unstable, so that the section size of the embankment is reduced, the stone dumping amount is reduced, and the engineering investment is reduced.

3. When the platform is in the construction environment under water, adopt membrane bag concrete placement, not only can guarantee construction quality, improve the wholeness of structure, and can not wait for tide or establish the cofferdam construction for the construction progress.

4. The prefabricated special-shaped blocks placed on the upper portion of the platform can be mutually occluded, and compared with a riprap body anti-impact structure, the integrity of the structure is greatly improved, the instability phenomenon is not easy to occur, and the later maintenance cost is low.

Drawings

Fig. 1 is a schematic sectional structure diagram of the embankment of the present invention.

In the figure: 1-throwing stones; 2-sealing the earthwork; 3-draining a sand cushion layer; 4-plastic drainage plugboard; 5-H type concrete sheet pile; 6-membrane bag concrete; 7-Niuwang block; 8-prefabricating a big square; 9-filling masonry blocks; 10-concrete floor; 11-wave wall; 12-a retaining wall; 13-embankment top road surface.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1, the utility model relates to a multistage protecting against shock dyke pond, its embankment body filling material use riprap 1 as the main, sets up tertiary protecting against shock platform in the slope of falling water of dyke pond altogether, and the one-level platform on water adopts irritates building block stone 9, and second grade, tertiary platform adopt membrane bag concrete 6 under water, and platform forward position at all levels sets up H type concrete sheet pile 5, and the degree of depth of penetrating into the earth is confirmed according to dyke body stable requirement. The prefabricated large square 8 is arranged at the upper part of the second-level platform and the third-level platform and is propped against the H-shaped concrete sheet pile 5, so that the functions of pressing and protecting are achieved; the queen cells 7 are regularly arranged outside the prefabricated big square 8 to play a role in wave dissipation. The platforms at all levels are closely connected and combined into a whole so as to achieve the aim of enhancing the scour prevention of the slope toe.

The utility model discloses the work progress of dyke pond does: firstly, filling a drainage sand cushion layer 3, then carrying out foundation treatment on a plastic drainage inserting plate 4, wherein the drainage inserting plate 4 is regularly arranged and inserted into a certain depth below a coating surface, then carrying out construction of an H-shaped concrete sheet pile 5, then carrying out main body embankment body filling, the filling of embankment body throwing stones 1 follows layered, segmented and zoned uniform loading, the embankment body is slowly lifted on the premise of ensuring the stability of the embankment body and the sheet pile, in the embankment body filling process, combining settlement control, synchronously carrying out construction of a backwater slope air-tight earthwork 2, a waterside slope film bag concrete 6 platform and a filling block stone 9 platform, after the embankment body filling is finished and the settlement is basically stable, discharging a wrest queen block 7 and a prefabricated big square block 8, pouring a concrete bottom plate 10, and finally carrying out construction of a wave wall 11, a retaining wall 12 and an embankment top.

The above embodiments are described with reference to the accompanying drawings, but the scope of the invention is not limited thereto, and it should be noted that, for those skilled in the art, the technical solutions obtained by equivalent replacement or equivalent transformation without departing from the spirit of the invention, all of which belong to the protection scope of the invention.

Claims

1. The utility model provides a multistage scour protection dyke pond, includes dyke body, platform, scour protection sheet pile, its characterized in that: the filling material of the dyke body is mainly cast stones, the outer slope of the dyke body is provided with multiple stages of platforms, and anti-impact sheet piles are arranged among the multiple stages of platforms.

2. The multistage ballistic protection embankment according to claim 1, characterized in that: and when the platform is in an underwater construction environment, the platform is poured by adopting film bag concrete.

3. The multistage ballistic protection embankment according to claim 1, characterized in that: the upper part of the platform is provided with a prefabricated square block and a special-shaped block body.

4. The multistage ballistic protection embankment according to claim 1, characterized in that: the anti-scouring sheet pile is a densely arranged prefabricated H-shaped sheet pile.

5. The multistage ballistic protection embankment according to claim 1, characterized in that: the height difference between adjacent platforms is controlled to be 2.0-3.0 m according to the stability requirement.