Large-traffic high water head scour prevention , prevention of seepage overflow cofferdam structure
The utility model discloses a large-traffic high water head scour prevention, prevention of seepage overflow cofferdam structure, utilize the riverbed excavated material as the CSG cofferdam of mainly expecting the source including being located on the riverbed basement rock behind the excavation, b...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The utility model discloses a large-traffic high water head scour prevention, prevention of seepage overflow cofferdam structure, utilize the riverbed excavated material as the CSG cofferdam of mainly expecting the source including being located on the riverbed basement rock behind the excavation, be provided with the prevention of seepage top layer of weir body on CSG cofferdam upper reaches surface, be provided with weir base impervious curtain at CSG cofferdam upper reaches weir foot, be provided with the barrier layer of cofferdam low reaches weir body on CSG cofferdam low reaches surface, be provided with the precast concrete piece on the barrier layer surface of cofferdam low reaches weir body, be provided with the protection of normality concrete at CSG cofferdam weir crest and cover thereby the barrier layer material of the prevention of seepage top layer of cofferdam upper reaches weir body and cofferdam low reaches weir body is for through adding the material that the grout improves impervious ability on the basis of CSG cofferdam material. The utility model discloses wholly arrange simply, accomplished to gather materials on the spot, salvaging, simplifying processing is the environment friendly engineering has solved large-traffic high water head and has crossed water CSG cofferdam scour protection, technological problem such as the novel and environmental protection of prevention of seepage, by a wide margin reduction engineering volume and save the construction investment |
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