WATER-FILLING TYPE RUBBER DAM SAND FLUSHING AND DISCHARGING SYSTEM FOR PREVENTING SILT BEHIND HIGH PILED WHARF

摘要

A water-filling type rubber dam sand flushing and discharging system for preventing silt behind a high piled wharf. The sand flushing and discharging system comprises an anchor rod (1) fixed on a base bed, a bottom plate (2) at the top of the anchor rod (1), a fixing anchor (3) used for connecting and fixing a rubber dam (4) to the bottom plate (2), a water-filling type rubber dam (4), a water filling pipe (5), and a water pressure gauge (6), a water filling valve (7), and a water pump (8) that are arranged on a rear seawall. By utilizing the portability of the water-filling type rubber dam (4) and the concept of converging water flow to flush sand, the water-filling type rubber dam (4) is provided behind the wharf, and the rubber dam (4) is filled with water by means of the water pump (8) provided on the rear seawall, so as to achieve the effect of a traditional dam; since a dam body reduces the area of a water flow cross section, the flow velocity of the water increases in a region between the top of the rubber dam (4) and the rear edge of the wharf, thereby having a scouring effect on the base bed and reducing a lateral earth pressure on a pile foundation. After an operation is completed, water is gradually drained to make a dam bag collapse and be recycled. The rubber dam sand flushing and discharging system solves the common problems of sediment back-silting and inconvenience and the like behind the wharf.