Karst area sinkhole petal-shaped overflow weir structure

The utility model discloses a petal-shaped overflow weir structure of a karst area sinkhole. The petal-shaped overflow weir structure is composed of a base, a vertical shaft and a step overflow weir. A hole is formed in the middle of the base, and the base is arranged on a sinkhole; the vertical shaft is arranged on the base; and the step overflow weir is arranged on the vertical shaft and is petal-shaped. A sinkhole overflow weir is arranged in a karst low-lying area, the water level can be increased, and an artificial lake is formed for water storage; the top of the overflow weir is petal-shaped to create a sinkhole drop landscape, a waterfall can be formed in a dry period, and the overflow weir can be used as a flood discharge channel in a flood period. 本实用新型公开了一种岩溶区域落水洞花瓣形溢流堰结构，由基座、竖井和台阶溢流堰组成；基座中间设置孔口，基座设置于落水洞上；竖井设置于基座上；台阶溢流堰设置于竖井上，台阶溢流堰设置为花瓣形。通过在岩溶低洼地区设置落水洞溢流堰，可壅高水位，形成人工湖蓄水；溢流堰顶部设置为花瓣形，打造落水洞跌水景观，枯期可形成瀑布，汛期可作为泄洪通道。