冻结法联络通道施工对隧道的影响分析  

Analysis of influence on the tunnel by the metro construction by freezing method

作　　者：郝润霞[1] 刘欣宇[1] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010

出　　处：《四川建筑科学研究》2014年第2期361-363,370,共4页Sichuan Building Science

摘　　要：通过对某软土地区冻结法联络通道施工过程中隧道的现场位移监测分析,得到了冻结法联络通道施工过程中两旁隧道的隆沉位移影响。结果表明,在打设冻结孔、冻结及开挖过程中,联络通道两侧隧道产生了向上位移;在完成施工后解冻过程中,联络通道旁隧道产生了沉降;在完成施工后半年内,受联络通道施工的影响,隧道沉降约比未受影响的多沉降了4mm。为了减小冻结法联络通道施工过程中对地表及两侧隧道的影响,建议在完成联络通道施工后加强隧道侧面及底部注浆,注浆应分多次进行。Based on displacement monitoring analysis of freezing method applied to connected aisle in tunnel in soft soil area,the influential Factors of ground settlement in connected passage-way construction of freezing method has been known. The results showed that during the hit, freeze and excavate of freezing hole construction, both sides tunnel of connected aisle have produced upward displacement within freezing process;after finishing construction, connected aisle tunnel have produced sedimentation within mffreezing process;in half year of finishing construction,tunnel sedimentation is more than 4 mm caused of connected aisle construction. To decrease the influence of ground and both sides tunnel in connected aisle construction of freezing technology,it is suggested that grouting of tunnel side and bottom have been strengthen and divided in many times after finishing connected aisle construction.

关 键 词：冻结法 联络通道 盾构隧道 地铁施工 

分 类 号：U231.3[交通运输工程—道路与铁道工程]