复合地层盾构施工安全影响因素及安全事故致因机理

为更好地开展复合地层盾构施工安全管理,研究该情境下盾构施工安全影响因素和安全事故致因机理。遵循文本挖掘范式,提炼基于"特征值字典"的文本挖掘方法,构建集成"频次-卡方优化"的文本挖掘算法,并基于此识别复合地层盾构施工安全的关键影响因素;选用ISM方法剖析关键影响因素的作用关系和多级结构,在此基础上研究复合地层情境下盾构施工安全事故致因机理;针对X项目开展实证分析。研究结果表明:本文构建的文本挖掘方法识别出环境类、人员类和机械设备类等关键影响因素;设计完备程度、人员安全影响因素和机械设备安全影响因素是开展复合地层盾构施工安全管理的关键,而完善安全组织有利于保障上述因素处于安全状态。

Research on safety impact factors and safety accident causation mechanism of subway shield construction in mix-ground

In order to better carry out the safety management of shield construction in mix-ground, the safety impact factors(SIFs) and safety accident causation mechanism(SACM) were studied in this paper. Following the text mining paradigm, a text mining method based on "eigenvalue dictionary" and a text mining algorithm integrating "frequency-chi-square optimization" were constructed, which then were used to identify the key SIFs during shield construction in mix-ground. Applying the ISM method, the relationships and multi-tiered structure of key SIFs were constructed, which then were used to analyze the SACM of shield construction in mix-ground. Finally, the X project was used for empirical analysis. The research shows that the text-mining method constructed in this paper identifies environmental, personnel and mechanical equipment key SIFs. Personnel SIFs and mechanical equipment SIFs are key factors to carry out safety management of shield construction in mix-ground. and could be maintained safe through perfecting safety organization.