大直径泥水平衡盾构施工参数对管片渗漏影响规律研究

Research on the Relationship between Tunnel Segment Leakage and Large Slurry Shield Construction Parameters

文章针对大直径盾构施工中渗漏风险的控制问题,以盾构施工参数为研究对象,采用多评价策略融合方法提取渗漏关键特征,设计了基于关联规则的数据挖掘方法对关键特征进行组合分析和渗漏预测,得到了管片渗漏规律并进行了渗漏机理分析,提出了解决渗漏问题的施工参数优化方法。在工程实践中,以上海软土地层中大直径泥水平衡盾构施工的实测数据为例,对渗漏进行预测并优化施工参数,文章提出的施工参数优化方法能够有效减少渗漏发生率,提高施工质量。

Focusing on the risk control of segment leakage in large- diameter shield tunnelling, and taking theshield construction parameters as the object of study, this paper uses the multi-evaluation strategy based fusionmethod to extract the key features of leakage, as well as the association rule based data mining method to analyzethe key feature combinations and predict segment leakage. The segment leakage rules and mechanism is obtainedand a construction parameter optimization method regarding leakage control is presented. In practice, based on themeasured data of large-diameter slurry shield tunnelling in soft soil in Shanghai, the segment leakage is predictedand the construction parameters are optimized, which proves that the proposed optimization method can effectively reduce the incidence of leakage events and improve construction quality.