鲁母水库坝基侧向侵蚀腔发育特征及处理  

Development Characteristics and Treatment of Lateral Erosion Cavities in the Dam Foundation of Lumu Reservoir

作　　者：杨立中 付小龙 YANG Lizhong;FU Xiaoong(Chuxiong Xinyuan Hydraulic Power Surver and Design Co.,Ltd,Chuxiong 675000,China)

机构地区：[1]楚雄欣源水利电力勘察设计有限责任公司,云南楚雄675000

出　　处：《云南水力发电》2023年第11期200-201,共2页Yunnan Water Power

摘　　要：鲁母水库坝型为埋石混凝土重力坝,坝基岩层产状平缓,岩性为石英砂岩、页岩、砾岩、泥质粉砂岩、钙质泥岩,为软硬相间的不均匀坝基,其中页岩层遇水易软化崩解,在水流冲刷作用下易产生顺层侧向侵蚀,坝基左岸坡脚发育侧向侵蚀腔,为坝基地质缺陷.重点介绍侧向侵蚀腔发育特征、采取的工程处理措施及效果.The dam type of Lumu Reservoir is a buried stone concrete gravity dam.The occurrence of the dam foundation rock layer is gentle,and the lithology is quartz sandstone,shale,conglomerate,argillaceous siltstone,and calcareous mudstone,which is an uneven dam foundation with alternating soft and hard layers.The shale layer is prone to softening and collapsing when encountering water,and is prone to lateral erosion along the layer under the action of water flow erosion.The development of lateral erosion cavities at the foot of the left bank slope of the dam foundation is a geological defect of the dam foundation.This paper focuses on the development characteristics of lateral erosion cavities,the engineering treatment measures taken,and their effects.

关 键 词：重力坝 侧向侵蚀 地质缺陷 工程处理措施 

分 类 号：TV223.4[水利工程—水工结构工程]