光岩滚水坝导流系统是上世纪50年代的水利工程遗产，体现了早期劳动人民的勤劳与智慧。滚水坝亦称溢流坝，是一种高度较低的拦水构筑物，坝体为浆砌石结构，与导水槽同时砌筑，将水位抬高由导流系统将水引至水力发电站。当涨水时，溢出的水则流向下游。 The Guangyan rolling dam diversion system is a water conservancy project heritage in the 1950s, reflecting the hard work and wisdom of the early working people. The rolling dam, also known as the overflow dam, is a low water retaining structure. The dam body is made up of masonry, and it is built at the same time as the gutter. The water level is raised by the diversion system to direct the water to the hydroelectric power station. When the water rises, the overflowing water flows downstream.