深厚矿坑回填地层地铁车站地基加固技术研究

Research on foundation reinforcement technology of subway station with deep mine backfill strata

深厚回填地层地铁车站建造过程中,结构易出现长期沉降,严重威胁地铁的运营,合理的地基加固措施对控制结构沉降具有重要意义。研究基于济南地铁4号线唐冶南站工程,开展了深厚矿坑回填地层地铁车站加固技术研究。研究得出,CFG桩与袖阀管注浆加固对地铁车站沉降具有重要意义。

During the construction of the subway station in the deep backfill formation,the structure is prone to longterm settlement,which seriously threatens the operation of the subway,and reasonable foundation reinforcement measures are of great significance to control structural settlement.Based on the Tangye South Station project of Jinan Metro Line 4,the research carried out the research on the reinforcement technology of the subway station of the backfill formation of the deep mine pit.It is concluded that the grouting reinforcement of CFG pile and sleeve valve tube is of great significance to the settlement of subway station.