Protection method for improving salt expansion or dissolution sink of salty soil
A technology for saline soil and soil improvement, applied in soil protection, excavation, roads, etc., to achieve the effects of saving resources, preventing salt swelling and subsidence, and preventing soil erosion
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[0018] Embodiment: The improvement protection method of a certain saline soil embankment project is as follows,
[0019] ① Set up side piles according to the designed width of the subgrade, use a bulldozer to remove the 40cm thick salt cover and topsoil, level the base, sprinkle an appropriate amount of water, and roll the subgrade base under optimal water content conditions to achieve the maximum degree of compaction;
[0020] ②Fill gravel above the base with a thickness 20cm greater than the thickness of the salt cap removed, and 50cm beyond the width of the designed embankment on both sides. Roll compaction, spread asphalt on the top of the gravel layer, and lay geotextiles on top of it in turn. Geomembranes and geogrids;
[0021] ③Put the sack on the geogrid at the side pile of the fill according to the construction requirements, fill the sack with improved saline soil containing grass seeds and shrub seeds, loosely spread the improved soil on the geogrid, and loosely spre...
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