【摘要】 以北京地铁七号线东延01标段豆各庄车站工程为背景,针对基坑西侧距离河道近、地下水丰富的情况,对基坑西侧进行止水加固方案研究,介绍了袖阀管注浆法在盾构端头加固止水的设计,对袖阀管注浆施工工艺和注浆过程需要控制的参数进行阐述。利用袖阀管注浆成功堵住洞口涌水并取得良好的地层加固效果,加快施工进度,节约成本。更多还原

【Abstract】 taking Beijing subway line no. 7 east extension 01 blocks area station project as the background,on the west side of foundation pit are close river,groundwater is rich,on the west side of foundation pit water stop reinforcement scheme research,this paper introduces the sleeve valve tube grouting method in the design of shield end strengthening water stop,the sleeve valve tube grouting construction technology and elaborates the need to control the parameters of the grouting process. The sleeve valve tube grouting is successfully used to plug the hole water gushing and has achieved good formation reinforcement effect,which speeds up the construction progress,saves the cost.更多还原