哈市地铁穿越段堤防塌陷处理方案的比选与确定  

Comparison and determination of embankment collapse treatment scheme in crossing section ofHarbin City Metro

作　　者：史晓东[1] SHI Xiao-dong

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130021

出　　处：《东北水利水电》2021年第2期1-3,14,71,共5页Water Resources & Hydropower of Northeast China

摘　　要：哈尔滨市地铁隧洞穿越松花江主航道1.2 km,过江后在地铁隧洞处穿越松花江道里堤防,与堤防斜交,隧道顶部覆土21.116 m。地铁隧洞采用盾构开挖施工工艺。左线地铁隧洞在穿越道里堤防开挖施工过程中,在道里堤防人民广场区段堤防第一阶马道及边坡处发生塌陷,陷坑位于在建地铁二号线左线上方,塌陷坑尺寸为直径2~3 m,深度约2 m。文中根据堤防塌陷处的地质条件,分析并根据其原因,分别选取振冲碎石桩法、强夯法、高喷灌浆围封法三种方法,通过分析比选,确定选用高喷灌浆围封法来处理堤防塌陷。Harbin metro tunnel passes through the main channel of Songhuajiang River for 1.2km.After crossing the river,it passes through the embankment in the Songhuajiang River tunnel,which is inclined to the embankment,the top of the tunnel is covered with soil of 21.116m.The subway tunnel of the left line collapsed at the first stage of the embankment and the side slope in Renmin Square section of the Daoli dike during the excavation process of crossing the Daoli dike.The sinkhole was located above the left line of subway Line 2 under construction.The size of the sinkhole was about 2~3m in diameter and about 2m in depth.In this paper,according to the geological conditions of the collapse place of the dike,three methods,vibroflotation gravel pile method,dynamic compaction method and high sprinkling grouting surround sealing method,are selected to deal with the collapse of the dike according to the analysis and comparison.

关 键 词：地铁穿堤 堤防塌陷 处理方案比选 

分 类 号：TV698.232[水利工程—水利水电工程]