Underwater riprap foundation bed and side slope erosion resisting structure and construction method thereof

A technology of riprap foundation bed and construction method, which can be used in infrastructure engineering, coastline protection, construction, etc., and can solve the problems of large volume, reducing the depth of harbor basin, and large amount of materials.

Active Publication Date: 2013-08-07
CCCC FOURTH HARBOR ENG INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods use a large amount of materials, or the construction is difficult, or the depth of the harbor basin is reduced due to the large volume

Method used

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  • Underwater riprap foundation bed and side slope erosion resisting structure and construction method thereof
  • Underwater riprap foundation bed and side slope erosion resisting structure and construction method thereof
  • Underwater riprap foundation bed and side slope erosion resisting structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Measure the size of the foundation bed and make it as Figure 5 As shown in the gabion grid, each grid has a bottom and no top, and the size is 1m×1m×0.5m.

[0033] Place the gabion 1 on the surface of the foundation bed 3, and bind the adjacent grids with iron wires to form an anti-scouring device.

[0034] Make a thin iron sheet cylinder with a diameter of about 20cm, and the length is the distance from the shore to the foundation bed surface. One end of the cylinder is fixed on the shore, and the other end is placed above the gabion net, and the movement is controlled by the diver in the water.

[0035] The staff on the shore threw about 10cm of gravel into the cylinder, and the gravel passed through the cylinder to reach the gabion. When one grid is filled with gravel, the diver moves the cylinder to another grid, and so on.

[0036] When all grids are filled with gravel, cover each grid with a whole piece of wire mesh and tie it tightly with wire.

[0037] Dig ...

Embodiment 2

[0039] Measuring the dimensions of structures such as Figure 4 As shown, the processing surface layer and bottom geotextile 6.1, 6.3 and a layer of grid-shaped geotextile bag 6.2, the middle part of the mold bag 6.2 is provided with a grouting opening, and the periphery of the geotextile and the geotextile bag is provided with zippers.

[0040] Place the underlying geotextile 6.3 on the surface of the foundation bed, and use small wooden piles for temporary fixation.

[0041] Place the grid-shaped geomembrane bag 6.2 and connect it with the underlying geotextile 6.3 using a zipper. Open the grouting port to pour cement mortar into the geotechnical mold bag, and cover the grouting port of the bag every time the bag is filled.

[0042] After the mold bag is fully filled, place the surface layer geotextile 6.1 on the geotechnical mold bag 6.2 and connect it with a zipper to form a complete anti-scouring device.

[0043] Dig a trench 2 along the lower end of the foundation bed,...

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PUM

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Abstract

The invention discloses an underwater riprap foundation bed and side slope erosion resisting structure which comprises an erosion resisting device arranged on the surface of a foundation bed or the surface of a side slope, a fixing structure for fixing the erosion resisting structure onto the foundation bed or the side slope and a ditch dug along the foundation bed or the lower end of the surface of the side slope, wherein the lower end of the erosion resisting device is embedded in the ditch for fixing, and the erosion resisting device is of a soil engineering structure with a casing formed by soil engineering materials and with sand and stone filled in the casing. By installing and fixing the erosion resisting device onto the surface of a structural object, the peripheral water flow speed can be reduced, so that the aim of resisting erosion damage to the structural object can be achieved. All steps related in the technical scheme do not need large machinery for matching, and construction is easy and economic.

Description

technical field [0001] The invention relates to a technology for preventing underwater riprap foundation bed and side slope from being damaged by erosion. Background technique [0002] For underwater structures such as riprap foundations, breakwaters, and slopes, erosion damage is often one of the main forms of damage. The main cause of this kind of damage is that under the action of external force, the water flow velocity near the surface of the structure is too fast, exceeding the starting speed of the constituent materials of the structure, resulting in the structure being eroded and washed by the water flow. Such external forces include tidal action, ships' propellers churning the water, and severe weather such as typhoons. [0003] At present, some commonly used anti-scouring methods for riprap foundation beds and slopes include mold bag concrete, silicification of raised concrete, concrete components such as fence panels, and bottom and slope protection measures such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/12E02B3/14E02D15/08E02D15/10
Inventor 董志良魏明晖李国豹应宗权
Owner CCCC FOURTH HARBOR ENG INST
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