阳江抽水蓄能电站下水库大坝坝基防渗处理技术  

Anti-seepage Treatment Technology of Lower Reservoir Dam Foundation of Yangjiang Pumped Storage Power Station

作　　者：周清[1] ZHOU Qing(Guangdong Hydropower No.2 Co.,Ltd.,Guangzhou 511340,China)

机构地区：[1]广东水电二局股份有限公司,广州511340

出　　处：《广东水利水电》2023年第12期63-68,共6页Guangdong Water Resources and Hydropower

摘　　要：广东阳江抽水蓄能电站下水库大坝为沥青混凝土心墙堆石坝,最大坝高55.9 m,建造于地震烈度区Ⅶ度、深厚不均匀的覆盖层上。下水库大坝坝基河床部位以洪冲积砂卵石层作建基面,两岸坝肩及防渗心墙建基面为全风化带,坝基防渗采用混凝土防渗墙与帷幕灌浆共同防渗的方式。本文简要介绍了下水库大坝坝基处理设计,在施工技术方面从坝基开挖处理、混凝土防渗墙、帷幕灌浆施工及坝基防渗效果等作了简略的阐述,分析了覆盖层坝基混凝土防渗墙施工等主要存在的技术难点和控制重点,可供类似工程参考。The lower reservoir dam of Guangdong Yangjiang Pumped storage power station is an asphalt concrete core rockfill dam,with a maximum height of 55.9m,which is built on the deep and uneven overlayer.The riverbed of the dam foundation of the lower reservoir is flood alluvial sand pebble layer as the foundation surface,and the foundation surface of the dam shoulder and anti-seepage core wall on both sides is fully weathering zone.The seepage control of the dam foundation is concrete anti-seepage wall and curtain grouting.This paper briefly introduces the reservoir dam foundation treatment design,in the construction technology from the dam excavation treatment,concrete impervious wall,curtain grouting construction and dam foundation seepage control effect briefly,analyzes the covering dam foundation concrete impervious wall construction of the main technical difficulties and control key,for reference for similar engineering.

关 键 词：堆石坝 覆盖层 坝基防渗 混凝土防渗墙 帷幕灌浆 

分 类 号：TV698.233[水利工程—水利水电工程]