砂卵石地层超深防渗墙工艺试验研究  

Experimental study on ultra-deep cut-off wall in sandy cobble stratum

作　　者：仇正中[1,2,3] 孙晓伟 徐彬彬[1] QIU Zheng-zhong;SUN Xiao-wei;XU Bin-bin(CCCC Second Harbor Engineering Co.,Ltd.,Wuhan,Hubei 430040,China;Key Lab of Large-span Bridge Construction Technology of Ministry of Transportation,Wuhan,Hubei 430040,China;Research and Development Center of Transportation Industry of Intelligent Manufacturing Technologies of Transport Infrastructure,Wuhan,Hubei 430040,China)

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040 [2]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040 [3]交通运输行业交通基础设施智能制造技术研发中心,湖北武汉430040

出　　处：《中国港湾建设》2021年第8期33-37,共5页China Harbour Engineering

基　　金：中国交建“强冲刷河段深厚强透水地层大型沉管隧道建设关键技术研究”(2018-ZJKJ-17)。

摘　　要：针对襄阳市东西轴线东汊干坞超深防渗墙地质环境及施工工艺要求,进行了原位工艺试验,验证了砂卵石地层超深防渗墙成槽可行性。结合工艺试验,总结出了在砂卵石易透水、易塌孔地层中进行超深防渗墙施工工艺的要点,比选确定了防渗墙墙体材料,为防渗墙施工提供了试验数据及理论支撑。According to the geological environment and construction technology requirements of the ultra-deep cut-off wall in the east branch dry dock along the east-west axis of Xiangyang,the in-situ process test was carried to verity the feasibility of trenching ultra-deep cut-off wall in sandy cobble stratum.Combined with the process test,the key points of the construction technology of the ultra-deep cut-off wall in the sandy cobble stratum which is easy to penetrate and collapse were summarized,and the material of the cut-off wall was determined by comparison,which provides experimental data and theoretical support for the construction of the cut-off wall.

关 键 词：砂卵石地层 原位工艺试验 超深防渗墙 自凝灰浆 塑性混凝土 

分 类 号：U655.58[交通运输工程—港口、海岸及近海工程]