南宁市轨道交通3号线一期工程(科园大道-平乐大道)施工总承包02标土建8工区土压平衡盾构掘进渣土改良方案目录1编制依据..............................................................................................................................32工程概况..............................................................................................................................32.1工程范围..................................................................................................................32.2工程地质..................................................................................................................62.2.1地形、地貌...................................................................................................62.2.2地层描述.......................................................................................................62.2.3隧道洞身穿越地层.....................................................................................112.3水文地质................................................................................................................132.4周边环境................................................................................................................133渣土改良............................................................................................................................153.1渣土改良的原因.....................................................................................................153.2渣土改良的方法.....................................................................................................153.3渣土改良在盾构施工中的重要性.........................................................................154渣土改良试验....................................................................................................................164.1试验目的................................................................................................................164.2改良剂的确定........................................................................................................164.3试验.........................................................................................................................184.3.1圆砾地层改良试验.....................................................................................184.3.2泥岩地层改良试验.....................................................................................224.4试验结果................................................................................................................265安全质量控制措施............................................................................................................265.1防喷涌控制措施.....................................................................................................265.1.1喷涌原因分析.............................................................................................26第1页/共28页南宁市轨道交通3号线一期工程(科园大道-平乐大道)施工总承包02标土建8工区土压平衡盾构掘进渣土改良方案5.1.2控制措施.....................................................................................................275.2防刀盘结泥饼措施.................................................................................................275.2.1刀盘结泥饼原因分析................................................................
