交叉作業下換乘通道緊鄰既有車站墻體破除施工技術*

多冉偉1，楊宏剛1，劉奧林2

(1.中鐵一局集團第三工程分公司，陜西 寶雞 721006； 2.中南大學土木工程學院，湖南 長沙 410075)

［摘要］南寧市金湖廣場站是在建南寧地鐵3號線和已運營地鐵1號線的換乘站，兩站通過換乘通道連接。換乘通道施工區域狹小且與處于交叉作業環境下，這對換乘通道緊鄰既有車站墻體的破除及渣體外運產生制約。同時考慮避免換乘通道施工過程中對1號線運營造成過大干擾，通過采用水鉆加繩鋸切割技術破除既有車站墻體并依托風亭基坑內現有支撐搭建運料操作平臺外運渣體，較好地解決了既有車站運營保護、交叉作業下各項施工安全進行等難題。

［關鍵詞］地下工程；換乘通道；交叉作業；轉料平臺；施工技術

［中圖分類號］TU745.3     ［文獻標識碼］A     ［文章編號］1002-8498(2021)19-0018-06

Wall Breaking Construction Technology of Transfer Channel Adjacent to the Existing Station Under Cross working Environment

DUO Ranwei¹, YANG Honggang¹, LIU Aolin² 

(1.Third Engineering Branch, China Railway First Bureau Group, Baoji, Shaanxi 721006, China; 2.College of Civil Engineering, Central South University, Changsha, Hunan 410075, China)

Abstract:Nanning Jinhu Square station is a transfer station of Metro Line 3 under construction and Metro Line 1 under operation with transfer channel below the Minzu Avenue. The construction of transfer channel faced many difficult problems such as narrow construction area and the cross working environment. As for the removal of the transfer channel adjacent to the existing station wall and slag transport, in addition to the above factors, it is also necessary to consider to avoid excessive interference caused by construction on Line 1 operation, which is difficult and risky. By using the technology of water drill and rope saw, the existing station wall was broken and the external slag body of the material handling platform was built based on the existing support in the foundation excavation of wind pavilion to solve the existing station operation protection, cross working under the various construction security and other challenges.

Keywords:underground engineering; transfer channel; cross working; transfer platform; construction

*國家自然科學基金（51778637）

［作者簡介］多冉偉，高級工程師，Email：853739080@qq.com