某水电站冲砂底孔冲刷破坏原因分析及修复措施  

Cause Analysis and Remedial Measures for Scouring Damage of Flushing Bottom Hole of a Hydropower Station

作　　者：宋志诚 SONG Zhi-cheng(Guoneng Daduhe Pubugou Hydropower General Plant,Hanyuan 625304,China)

机构地区：[1]国能大渡河瀑布沟水力发电总厂,四川汉源625304

出　　处：《云南水力发电》2022年第1期252-253,共2页Yunnan Water Power

摘　　要：泄水、冲砂建筑物普遍存在冲刷破坏问题,尤其在高速含沙或推移质的水流作用下,破坏情况更为严重,甚至直接影响泄水、冲砂建筑物的安全运行。结合某电站冲砂底孔冲刷破坏情况,针对其破坏情况、破坏原因,制定门槽部位按原设计恢复钢板、局部未脱落钢衬钢衬加固及其他部位采用环氧砂浆修复等相应的处理措施,并在后期运行中效果良好。Scouring damage is a common problem in water release and sand flushing structures.Especially under the action of high-speed flow with sediment or bed load,the damage is more serious and even directly affects the safe operation of water release and sand flushing structures.According to the scouring damage of flushing bottom hole of a power station and its damage condition and cause,the corresponding treatment measures such as restoring steel plate according to the original design,reinforcing partial non-falling steel lining and repairing other parts with epoxy mortar are formulated,and the effect is good in later operation.

关 键 词：冲刷破坏 高速水流 冲砂建筑物 修复措施 

分 类 号：TV698.25[水利工程—水利水电工程]