摘要
系统分析地表位移、管线自身位移等地下管线控制指标的相关研究成果。对北京地区26条管线直接监测点的管体变形结果以及137条管线地表间接监测点的实测结果进行分析,研究地下管线的变形规律。实测结果表明,地下管线的差异沉降是控制其安全的重要指标,评价地下管线的安全状态应同时考虑管线的总体沉降和差异沉降。根据工程监测情况分析总结地下管线总体沉降量较大的原因,并给出不同类别地下管线控制指标的建议数值。严格控制施工过程、合理调整施工参数与控制盾构姿态,避免不正常事故的发生,是保障地下管线安全的关键。
The research achievements of underground pipelines controlled indexes including the surface ground displacement and pipeline displacement, etc., are analyzed systematically. The direct monitoring results of deformation of 26 pipelines and indirect monitoring results of 137 pipelines＇ ground surface are analyzed. The deformation law of the underground pipeline is then given. The monitoring results indicate that the pipeline differential settlement is very important and it is necessary to control the overall settlement and the differential settlement at the same time. According to the monitoring results, the reason for pipeline large overall settlement is studied, and controlled indexes value of different kinds of underground pipeline are proposed. Strictly controlling the construction process, adjusting the construction parameters and control of shield posture, and avoiding accidents, are very essential to ensure the security of underground pipeline.
出处
《都市快轨交通》
北大核心
2014年第5期86-92,共7页
Urban Rapid Rail Transit
关键词
轨道交通
地下管线
沉降
控制指标
urban rail transit
underground pipeline
settlement
controlled indexes
