泉域地区地下连续墙不同接头形式的对比分析

COMPARATIVE ANALYSIS OF DIFFERENT JOINT FORMS OF UNDERGROUND CONTINUOUS WALLS IN SPRING AREA

济南地铁R3号线6标段裴家营站和滩头站位于泉域地区,地层以粉质粘土为主,地层内空隙发育,渗透系数大。两车站均采用地下连续墙作支护结构,通过对比发现工字钢接头止水效果好,更适用于富水地层;而锁口管接头造价更低,适用于地下水不变的地层或对止水效果要求不高的结构。

During Peijiaying Station construction of Ji＇nan subway line R3, key points and difficulties of super-deep foundation pit dewatering project in spring area were analyzed and water pumping test was carried out to obtain relevant hydrologic parameters. This paper designed the dewatering scheme according to geological exploration report, and summarized general process and key points of super-deep foundation pit dewatering construction in spring area.