狭窄型河道坝前滑坡涌浪危险性评价研究  

Hazard Assessment of Landslide Surge in front of Narrow River Dams

作　　者：吴旭欣 魏慧 薛旭 李屹 刘晓庆 WU Xuxin;WEI Hui;XUE Xu;LI Yi;LIU Xiaoqing(Sichuan Huaneng Baoxing River Hydropower Co.,Ltd,Ya'an 625000,China;School of Energy and Power Engineering,Xihua University,Chengdu 610039,China)

机构地区：[1]四川华能宝兴河水电有限责任公司,四川雅安625000 [2]西华大学能源与动力工程学院,四川成都610039

出　　处：《人民珠江》2025年第3期46-56,共11页Pearl River

基　　金：华能集团总部科技项目(HNKJ22-HF86)。

摘　　要：针对狭窄型河道的近坝区边坡滑坡涌浪研究不足的问题,以宝兴电站为背景,利用FLOW-3D数值分析方法对不同滑坡规模条件下近坝区的涌浪传播特性、致灾特征和危险性进行分析,结果表明:滑坡体体积与涌浪首浪高度、涌浪危害程度、致灾性成正比关系。正常蓄水位(1352.0 m)和校核洪水位(1348.8 m)条件下,滑体体积分别为3.5万、15.0万m3的滑坡可产生1.41、4.81 m的涌浪高,涌浪接近或超过坝顶,漫坝风险高,涌浪危险性大,可视为上述水位条件下大坝安全运行的临界滑坡体积。与相对高水位相比,相对低水位可为大方量滑体引起的涌浪提供爬升空间,建议库区滑坡灾害易发时段,降低电站运行水位以降低漫坝风险。In response to the insufficient study on landslide surges in narrow river channels near the dam area,based on the Baoxing power station,this paper uses the FLOW-3D numerical analysis method to analyze the propagation characteristics,disaster characteristics,and hazard of surges in the near dam area on different landslide scales.The results show that the volume of the sliding slope is directly proportional to the first wave height,the range of harm,and the degree of hazard caused by the surge.At normal water level(1352 m)and check flood level(1348.8 m),landslides with sliding volumes of 35000 m3 and 150000 m3 can generate surge heights of 1.41 and 4.81 m,respectively.The surge height approaches or exceeds the dam crest.There is a high risk of dam overflow and surge hazard.It can be considered as the critical landslide volume for the safe operation of the dam under the above water level conditions.Compared with the relatively high water level,the relatively low one can provide climbing space for the surge caused by large sliding bodies.To reduce the risk of dam overflow,it is recommended to lower the operating water level of the power station during the prone period of landslide disasters.

关 键 词：滑坡涌浪 FLOW-3D 颗粒流模型 涌浪灾害 宝兴电站 

分 类 号：TV64[水利工程—水利水电工程]