套管跟进成孔法在基坑支护中的应用  

APPLICATION OF BORING BY SLEEVE-FOLLOWING-UP IN FOUNDATION PIT BRACING

作　　者：霍瑞琴 

机构地区：[1]山西省建筑工程(集团)总公司

出　　处：《建筑技术》2004年第5期335-337,共3页Architecture Technology

摘　　要：在地下水位以下流砂层、涌泥层或淤泥层中进行基坑支护,可采用套管跟进成孔法,其特点是套管与钻杆同时钻进,高压水从钻杆内泵入,清水冲渣,先注浆后拔套管。施工实践证明,该成孔法具有施工速度快、无泥浆污染和易确保工程质量等优点。Boring by sleeve-following-up method may be adopted in protecting foundation pit of quick sand stratum, mud or silt seam below underground water level. It is characterized by sleeve's follow- ing up drilling rod simultaneously, pumping high-pressured water from inside the drilling rod, flushing away dregs with clear water, and first grouting and then taking out the sleeve. Construction prac- tice proves that this method has the advantages of speedy construc- tion, no mud pollution and ensuring work quality easily etc.

关 键 词：基坑 支护 成孔 套管 

分 类 号：TU753.62[建筑科学—建筑技术科学]