施工技术 2017年7月下 18 CONSTRUCTION TECHNOLOGY 第46卷第14期 D01:10.7672/gjs2017140018 溶洞发育地区地下连续墙施工技术* 常龙，诸葛仲彦，袁光辉，潘光诚，袁泉 (中国建筑第八工程局有限公司广州分公司，广东广州510670) [摘要]广州市新白广城轨2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. [关键词]基坑；地铁车站；地下连续墙；溶洞；施工技术 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2017)14-0018-04 Construction Technology of Diaphragm Wall in Karst Cave Development Area CHANG Long ZHUGE Zhongyan YUAN Guanghui PAN Guangcheng YUAN Quan China Construction Eighth Engineering Dirision Co.Lid.Guangzhou Branch Guangzhou Guangdong 510670 China) Abstract: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 overe grooving machine impact drilling strict control of slurry gravity reverse circulation cleaning holes and other technologies are taken which achieve good effect. Key words:foundation excavation;subway station;diaphragm wall;cave;construction 1工程概况 道基坑围护结构采用1000mm厚地下连续墙，附属 1.1工程总体概况 结构基坑围护结构采用800mm厚地下连续墙，要求 本工程为广州白云国际机场扩建工程交通中 入微风化岩≥1.5m 心及停车楼项目，包括3个单位工程：新白广城轨 1.3地铁机场南站至机场北站区间 T2站...
溶洞发育地区地下连续墙施工技术.pdf
