中铁一局集团有限公司厦门市轨道交通工程管片厂提高盾构管片外观质量中铁一局集团厦门分公司厦门市轨道交通工程管片厂 QC 小组发表人：黄宗兴目录一、工程概况..............................................................................................................1二、背景......................................................................................................................1三、QC 小组成员及任务分工.....................................................................................1四、现状调查..............................................................................................................24.1 气泡.................................................................................................................24.2 修补质量.........................................................................................................34.3 外弧面收面较差.............................................................................................34.4 弯螺栓套管进浆.............................................................................................34.5 内弧边角不齐、局部沙化..............................................................................3五、设定活动目标......................................................................................................3六、原因分析..............................................................................................................36.1 气泡.................................................................................................................36.2 修补质量影响因素.........................................................................................46.3 管片外弧面收面影响因素..............................................................................46.4 套管进浆影响因素..........................................................................................46.5 内弧面边角不齐、局部沙化现象影响因素..................................................4七、要因确认.....
