摘要
根据南京地铁TA7标盾构法施工技术要求,结合施工的具体情况,从测量工作的过程分析了影响盾构贯通的5个误差来源。即:地面控制测量引起的横向误差、盾构出洞竖井联系测量误差、盾构进洞出洞门中心坐标测量误差、地下导线测量误差、盾构姿态的定位误差。根据工程测量中关于误差不等精度分配原则,探讨了地铁施工测量中上述各项误差的分配及各阶段测量工作应达到的精度,最后以工程实例说明了上述误差分配的合理性。
Based on a lof of survery practice and the demand of tunneling technology with shield driving method at TA7 Mark in Nanjing subway engineering,five error sourses to influence on the tunnel passing throngh survey auuracy are analysed,including the horizontal error caused by ground control survey,the survey error at the shaft connected with sheild exit,the central coordinate errors of sheild entrance and exit,the error of the underground traversing,and the sheild fixed position error.Acoording to the error distribution principle in construction survey,distribution of tunel passing through survey error limits and the precision rate of tunnel passing through survey in different phases are discussed and its reasonableness is approved by practice.
出处
《南京工业大学学报（自然科学版）》
CAS
2004年第6期33-35,共3页
Journal of Nanjing Tech University(Natural Science Edition)
基金
上海市机械施工公司资助
