湖南工业大学学报2012，Vol.26Issue(3)：39-43,5.
哈尔滨地铁利用既有隧道扩挖区间技术
The Technology of Extending the Existing Tunnels to Construct Harbin Metro
摘要
Abstract
Harbin Metro from West Bridge to Jiaohua Square and Jiaohua Square to the railway bureau is constructed by extending the existing civil air defense engineering.Aiming at its structural-broken security problems,the structure internal force variations for first breaking and after breaking are studied.By means of appropriately selecting the first-breaking point and breaking direction,interim vertical pre-support enforcing from sidewall to arch invert as well as vertical grouting and interval digging expanding,the structure internal force variations are within controllable range,and the vault settlement,arch invert floating and ground movement are effectively controlled.The structure and constructing security and the smooth project process are ensured.关键词
既有人防隧道/跳槽扩挖/首破点/径向注浆/临时竖撑Key words
existing aerial defense tunnel/interval digging expanding/first-breaking point/vertical grouting/interim vertical support分类
交通工程引用本文复制引用
刘效永..哈尔滨地铁利用既有隧道扩挖区间技术[J].湖南工业大学学报,2012,26(3):39-43,5.
