BEACH STABILIZING DEVICE

PURPOSE:To efficiently drain wave going upstream and ground water by inclining a large number of drain structural bodies between the position above the position of wave going upstream and the required deep water position to bury and arrange them as surfaces. CONSTITUTION:A filter member 42 having permeability and preventing the incursion of sand 20 is stretched to the outside of a flat shaped main body 38 formed of a frame body, and drain structural bodies 30 forming a drain space 44 extended in the horizontal direction are provided to the inside thereof. After that, the drain structural bodies 30 are inclined between the proper position A above the position of wave going upstream in a beach 14 and the required deep water position B, and a large number of drain structural bodies 30 are connected to bury and arrange them as surfaces. Wave going upstream and ground water raising the water level in sandy soil of the beach 14 are discharged into the sea through the drain structural bodies 30, and the ground water level is lowered to stabilize the beach 14.