郑州市轨道交通2号线一期工程区间土建施工盾构始发接收施工方案目录1编制说明................................................................................................11.1编制依据................................................................................................................11.2编制原则................................................................................................................11.3适用范围................................................................................................................22工程概况................................................................................................22.1区间线路概况........................................................................................................22.2水文地质条件........................................................................................................22.2.1东风路站始发端................................................................................................22.2.2北环路站接收端................................................................................................42.3区间施工重点难点................................................................................................52.3.1区间施工重难点分布........................................................................................52.3.2下穿东风渠.......................................................................................................62.3.3侧穿东风渠桥桥桩............................................................................................72.3.4下穿水利学校1号3号学生公寓.....................................................................72.3.5下穿汽车北站过街天桥....................................................................................72.4施工材料、施工方法............................................................................................82.4.1始发段施工方法................................................................................................82.4.2接收段施工方法................................................................................................93施工计划................................................................................................93.1.2始发场地布置.................................................................................................103.1.3盾构接收场地布置..........................................................................................114端头加固..............................................................................................114.1端头加固方案......................................................................................................114.2施工流程..............................................................................................................134.3施工工艺..............................................................................................................144.4注浆控制标准......................................................................................................154.5质量保证措施......................................................................................................154.6端头加固效果检查..............................................................................................164.7端头加固效果不理想处理措施.........
