River embankment structure integrating pollutant migration prevention with ecological greening, and construction method

Abstract

The invention discloses a river embankment structure integrating pollutant migration prevention with ecological greening, and a construction method. The river embankment structure comprises an ecological gabion retaining wall, a clay impermeable layer, a clay protection layer and a surface soil-covering green belt which are distributed along a riverbed, wherein the ecological gabion retaining wallis located on the upstream face of a river channel; the clay impermeable layer is located on the downstream face of the ecological gabion retaining wall; the clay protection layer is located at the junction of the clay impermeable layer and the ecological gabion retaining wall; and the surface soil-covering green belt is located on the surfaces of the ecological gabion retaining wall and the clayimpermeable layer. According to the structure, the embankment construction form of combining the clay impermeable layer with the ecological gabion retaining wall is adopted, and simple and economic technical measures are adopted in the method, so that flood-control and anti-waterlogging effects are achieved, the mutual migration of a pollution source along the river channel, a drainage basin, canbe prevented, cross pollution is avoided, and the investment is saved; and ecological greening can further be carried out on the two sides of the river channel, so that the ecological environment isimproved, and the ecological protection is realized.

Description

technical field

[0001] The invention belongs to the field of environmental engineering, and in particular relates to a river embankment structure and construction method integrating pollution migration and ecological greening, which are used for river channel treatment projects for cross-pollution between polluted soil along the banks of small and medium-sized rivers and river basins. Background technique

[0002] In recent years, with the rapid development of society and economy, the blind mining of mineral resources, the rapid expansion of industrial production, the extensive use of chemical products in agricultural activities, and the large amount of toxic and harmful substances produced by human activities have entered the soil and rivers, and the soil and water, the atmosphere and There is constant material exchange between organisms. Harmful substances pass through "soil → plant → human body", or through "soil → water → human body", or through "water → soil → human body...

Examples

Embodiment 1

[0042] As described in the above steps, first clear the river channel to the river bed 1 elevation according to the plan, and excavate the embankment baseline 5 according to the structural form and size of the ecological gabion 6 and the structural form and size of the clay anti-seepage layer 7; the ecological gabion retaining wall 6 should be based on the flood control of the river channel The level and height of the wall shall be set up to meet the requirements of the dike foundation. After the construction of the dike foundation is completed, the ecological gabion retaining wall 6 shall be constructed on the dike foundation; after the construction of the ecological gabion retaining wall 6 is completed, the ecological gabion A clay protective layer 8 is laid on the water surface, and then a clay anti-seepage layer 7 is backfilled between the coastal polluted soil 4 and the ecological gabion retaining wall 6. The backfill thickness and compaction of the clay anti-seepage layer ...

Embodiment 2

[0044] When the present invention is applied to the slope surface of the polluted soil 4 along the coast, the construction sequence of the clay anti-seepage layer 7 and the ecological gabion retaining wall 6 should be adjusted, that is, the clay anti-seepage layer 7 is constructed first, and then the clay protective layer 8 is laid, and finally the construction is carried out. Ecological construction retaining wall 6, the rest of the construction steps are the same as in Embodiment 1.

Embodiment 3

[0046] The anti-seepage material of the clay anti-seepage layer 7 selects geomembrane, or cement soil, or concrete wall, etc., and its construction steps are consistent with Embodiment 1; Consistent with Example 2.

technical field

[0001] The invention belongs to the field of environmental engineering, and in particular relates to a river embankment structure and construction method integrating pollution migration and ecological greening, which are used for river channel treatment projects for cross-pollution between polluted soil along the banks of small and medium-sized rivers and river basins. Background technique

[0002] In recent years, with the rapid development of society and economy, the blind mining of mineral resources, the rapid expansion of industrial production, the extensive use of chemical products in agricultural activities, and the large amount of toxic and harmful substances produced by human activities have entered the soil and rivers, and the soil and water, the atmosphere and There is constant material exchange between organisms. Harmful substances pass through "soil → plant → human body", or through "soil → water → human body", or through "water → soil → human body...

Examples

Embodiment 1

[0042] As described in the above steps, first clear the river channel to the river bed 1 elevation according to the plan, and excavate the embankment baseline 5 according to the structural form and size of the ecological gabion 6 and the structural form and size of the clay anti-seepage layer 7; the ecological gabion retaining wall 6 should be based on the flood control of the river channel The level and height of the wall shall be set up to meet the requirements of the dike foundation. After the construction of the dike foundation is completed, the ecological gabion retaining wall 6 shall be constructed on the dike foundation; after the construction of the ecological gabion retaining wall 6 is completed, the ecological gabion A clay protective layer 8 is laid on the water surface, and then a clay anti-seepage layer 7 is backfilled between the coastal polluted soil 4 and the ecological gabion retaining wall 6. The backfill thickness and compaction of the clay anti-seepage layer ...

Embodiment 2

[0044] When the present invention is applied to the slope surface of the polluted soil 4 along the coast, the construction sequence of the clay anti-seepage layer 7 and the ecological gabion retaining wall 6 should be adjusted, that is, the clay anti-seepage layer 7 is constructed first, and then the clay protective layer 8 is laid, and finally the construction is carried out. Ecological construction retaining wall 6, the rest of the construction steps are the same as in Embodiment 1.

Embodiment 3

[0046] The anti-seepage material of the clay anti-seepage layer 7 selects geomembrane, or cement soil, or concrete wall, etc., and its construction steps are consistent with Embodiment 1; Consistent with Example 2.

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