Method for building sea filling embankment

Abstract

The invention discloses a method for building a sea filling embankment. The method comprises the following steps: a bearing stratum is selected; an embankment cross section is selected; throw-filling parameters are determined; explosion parameters are determined; and embankment body throw-filling, embankment head explosion-filling, embankment top supplement-filling and embankment side explosion-filling are implemented. The method of silt squeezing and rock filling by blasting disclosed by the invention is conducted in a manner that explosive groups are buried and placed in a muddy soft foundation with a certain distance and depth from the outer edge of a rock body, a cavity is formed in silt at the blasting initiation moment, and then the riprap rock body fill the cavity and form a rock tongue, so as to achieve the aim of replacing the silt. The silt is extruded outwards through explosion, and the quantity of the extruded silt is the engineering quantity within the range of the embankment, so that compared with the dredger operation, the engineering quantity of the silt needing to be cleared is greatly reduced, and affected zones of a water area and that under water are greatly reduced at the same time. Materials such as mounting cutting rocks, and the like are firstly filled into the bearing stratum, and then fillers act on the bearing stratum through silt squeezing by blasting, so that the working steps are reduced, the construction cost is greatly shortened. Therefore, the building method has very obvious advantages on the aspects of construction speed, engineering cost and economic benefit.

Description

technical field [0001] The invention relates to a construction technology of urban road embankment engineering, in particular to a construction method of sea reclamation embankment. Background technique [0002] Generally, the construction of urban road embankment works is carried out in the absence of water, and the embankment is generally filled by layered filling and layered rolling. [0003] When the road crosses the seaside shoal or there is a thick silt layer under the water, the embankment is usually constructed by mechanically removing the silt and replacing it. However, this method requires a large excavation area, resulting in a slow construction progress. It is difficult to meet the construction schedule requirements under tight construction schedules. [0004] The commonly used method when building coastal roads in Dalian area to cross the soft ground—excavation and replacement, requires dredgers to remove all the silt in the embankment area that needs to be cle...

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Problems solved by technology

[0003] When the road crosses the seaside shoal or there is a thick silt layer under the water, the embankment is usually constructed by mechanically removing the silt and replacing it. However, this method requires a large excavation area, resulting in a slow construction progress. Difficult to meet construction progress requirements under tight construction schedule

[0004] The commonly used method when building coastal roads in Dalian area to cross the soft ground—excavation and replacement, requires dredgers to remove all the silt in the embankment area that needs to be cleared, and the underwater silt has a relatively large fluidity, especially when dredgers are working The disturbance of the underwater silt enhances the fluidity of the underwater silt, the water area and the underwater influence area are very large, and the amount of silt removal increases at the same time

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