利用突变理论来减少偏压浅埋公路隧道在施工中风险事故发生的频率,提出了突变级数法,运用于偏压浅埋公路隧道施工风险评价。首先,将评价目标偏压浅埋公路隧道施工风险进行逐层分解,得到各级评价指标;其次,将最末层的指标评分赋值后,通...利用突变理论来减少偏压浅埋公路隧道在施工中风险事故发生的频率,提出了突变级数法,运用于偏压浅埋公路隧道施工风险评价。首先,将评价目标偏压浅埋公路隧道施工风险进行逐层分解,得到各级评价指标;其次,将最末层的指标评分赋值后,通过无量纲化处理,得出的结果再进行归一化运算;然后,将评价指标与突变模型一一对应,用其归一化公式向高等级指标逐层进行运算,直到得到评价目标的突变级数最终值为止;最后,根据评价等级标准和最终突变级数进行公路隧道施工风险分析评价。利用该方法对大岩阡隧道中地质勘察、施工控制、支护衬砌、监控测量四方面进行风险评价,得出风险等级。该方法有效减少了人为赋值的主观性,从而提高了评价的可靠性,并且计算流程相对简单。该方法所得出的评价结果更加贴近实际情况,更准确地反映了各评价指标的实际状况,为实际工程提供了更有价值的信息支持。The catastrophe theory is applied to mitigate the occurrence of risk accidents during the building of shallow coverage expressway tunnels, while a catastrophe progression method is put forward for assessing the risks connected with such building projects. Firstly, the building risk of a biased shallow coverage expressway tunnel is systematically decomposed, and the evaluation metrics are determined. Secondly, dimensionless processing is applied to assign an index score to the final layer, which is subsequently standardized. Subsequently, each evaluation index is matched individually with the catastrophe model, and high-level indices are calculated layer by layer using normalization formulas until the final catastrophe series value of the evaluation target is obtained. Finally, an analysis and assessment of expressway tunnel building risk is conducted based on both the evaluation grade standard and the final abrupt progression. The approach was applied to assess risks in four aspects of the Dayanqian Tunnel: geological investigation, construction oversight, support lining, and monitoring inspections. It yielded risk classifications. This method significantly reduces subjectivity in human-assigned values, enhancing the reliability of the assessment while maintaining a relatively straightforward calculation process. Its results better reflect real-world conditions, accurately reflecting the actual status of each evaluation criterion, thereby furnishing practical engineering projects with more valuable information.展开更多
文摘利用突变理论来减少偏压浅埋公路隧道在施工中风险事故发生的频率,提出了突变级数法,运用于偏压浅埋公路隧道施工风险评价。首先,将评价目标偏压浅埋公路隧道施工风险进行逐层分解,得到各级评价指标;其次,将最末层的指标评分赋值后,通过无量纲化处理,得出的结果再进行归一化运算;然后,将评价指标与突变模型一一对应,用其归一化公式向高等级指标逐层进行运算,直到得到评价目标的突变级数最终值为止;最后,根据评价等级标准和最终突变级数进行公路隧道施工风险分析评价。利用该方法对大岩阡隧道中地质勘察、施工控制、支护衬砌、监控测量四方面进行风险评价,得出风险等级。该方法有效减少了人为赋值的主观性,从而提高了评价的可靠性,并且计算流程相对简单。该方法所得出的评价结果更加贴近实际情况,更准确地反映了各评价指标的实际状况,为实际工程提供了更有价值的信息支持。The catastrophe theory is applied to mitigate the occurrence of risk accidents during the building of shallow coverage expressway tunnels, while a catastrophe progression method is put forward for assessing the risks connected with such building projects. Firstly, the building risk of a biased shallow coverage expressway tunnel is systematically decomposed, and the evaluation metrics are determined. Secondly, dimensionless processing is applied to assign an index score to the final layer, which is subsequently standardized. Subsequently, each evaluation index is matched individually with the catastrophe model, and high-level indices are calculated layer by layer using normalization formulas until the final catastrophe series value of the evaluation target is obtained. Finally, an analysis and assessment of expressway tunnel building risk is conducted based on both the evaluation grade standard and the final abrupt progression. The approach was applied to assess risks in four aspects of the Dayanqian Tunnel: geological investigation, construction oversight, support lining, and monitoring inspections. It yielded risk classifications. This method significantly reduces subjectivity in human-assigned values, enhancing the reliability of the assessment while maintaining a relatively straightforward calculation process. Its results better reflect real-world conditions, accurately reflecting the actual status of each evaluation criterion, thereby furnishing practical engineering projects with more valuable information.
