Dock chamber basis decompression drainage system

The utility model relates to a dock chamber basis decompression drainage system. The utility model discloses the dock chamber bottom plate is connected to dock chamber wall bottom, sets up the water catch bowl on the dock chamber bottom plate, sets up in the dock chamber bottom plate under from the hose connection that permeates water in proper order for the geotechnological cloth that permeates water, medium coarse sand filtering layer, handstone filtering layer, well stone filtering layer, in water catch bowl and the well stone filtering layer upwards down. The utility model overcomes uneconomical and the bulky concrete crack control problem that current thickening bottom plate brought to reaching the basement uplift pressure and failing effectively to be released, the dock chamber bottom plate will be in the heavily stressed state that bears for a long time, is unfavorable for using for a long time and pacifying the congruent defect of structure. The utility model discloses groundwater in messenger's lock chamber ground is after the geotechnological cloth that permeates water, medium coarse sand filtering layer, handstone filtering layer, well stone filtering layer filter, and the hose is discharged by permeating water to make the basement uplift pressure effectively released, the basement uplift pressure reduces approximately 80%, has improved dock chamber bottom plate stress condition, has improved dock chamber bottom plate bearing capacity and the anti ability of floating, reduces the construction investment.