摘要
广州市新白广城轨T2站和地铁3号线机场北站区间地下连续墙位于岩溶发育地区,见洞率高。在地下连续墙施工前需要提前对岩溶进行处理,同时过程中克服溶洞引起的塌陷、卡钻、基岩面起伏大、砂层厚等地质条件,通过成槽机+冲击钻、严格控制泥浆密度、反循环清孔等技术,取得较好的效果。
The diaphragm wall of the intercity of T2 station of Xintang to Guangzhou North Railway Station via Baiyun Airport and the Airport North Station of metro line No.3 is located in the karst area of Guangzhou,which meets holes frequently.Before the diaphragm wall is constructed,the karst should be dealt with ahead of schedule,at the same time,the geological conditions such as collapse caused by karst cave,sticking of drill,large fluctuation of bedrock surface and thickness of sand layer are overcome,grooving machine ＋ impact drilling,strict control of slurry gravity,reverse circulation,cleaning holes and other technologies are taken,which achieve good effect.
出处
《施工技术》
CAS
北大核心
2017年第14期18-21,共4页
Construction Technology
基金
中国建筑第八工程局有限公司科技研发课题(2015-09)
关键词
基坑
地铁车站
地下连续墙
溶洞
施工技术
foundation excavation
subway station
diaphragm wall
cave
construction
