Automatic flood control structure

The utility model discloses an automatic flood control structure which comprises a flood drainage ditch, an opening is formed in the top end of the flood drainage ditch, a buoy is rotationally connected to one side of the opening in the top end of the flood drainage ditch, the buoy is placed in the flood drainage ditch, and a flood control baffle is arranged on the side, close to the opening in the top end of the flood drainage ditch, of the buoy. According to the automatic flood control structure, the ascending angle of the flood control structure can be automatically adjusted along with the water quantity, manual operation is not needed, the flood control effect can be achieved timely and rapidly in heavy rainfall, and manpower and material resources are saved. 本实用新型公开了一种自动防洪结构，包括排洪沟，所述排洪沟的顶端开口，所述排洪沟的顶端开口一侧转动连接有浮筒，所述浮筒放置在所述排洪沟内，所述浮筒靠近所述排洪沟的顶端开口的一侧设置有防洪挡板。本实用新型的自动防洪结构，防洪结构的上升角度可随水量的多少自动调节，不需要人工操作，能够在强降雨时及时快速的实现防洪作用，节省人力物力。