富水流砂地层隧道围岩止水加固方案及变形分析

通过理论分析和数值模拟方法,对深圳地铁4号线穿越大脑壳山富水流砂地层的洞内长管结合短管注浆、地面帷幕墙结合洞内导管注浆、地面旋喷分段止水帷幕及袖阀管注浆结合洞内导管注浆、地面高压旋喷桩分段止水帷幕结合洞内导管注浆等四种止水加固方案进行了分析.结果表明,方案四的隧道顶部沉降和应力皆小于前两种方案.综合考虑工期和造价,最终...

Analysis of Water Stop Reinforcement and Deformation of Surrounding Rock in Water-rich Quicksand Stratum

Shenzhen Metro Line 4 passes through a waterrich quicksand stratum,based on theoretical analysis and numerical simulation,this paper discusses four reinforcement methods:long tube inside the cave with the short pipe combined with floor grouting;ground curtain wall combined with cave pipe grouting;sub-surface jet waterproof curtain and the sleeve valve pipe combined with grouting;jet grouting pile of sub-surface high-pressure seal hole catheter combined with grouting curtain.The results show that in the four...