隧道施工塌方安全风险状态判断研究

Research on judgment of the safety risk status of the tunnel construction collapse

在隧道施工过程中塌方事故时有发生,准确及有效的隧道施工塌方安全风险状态判断对控制及预防事故的发生极为重要。为此,本文从系统突变的视角出发,在分析提取主要安全风险因素的基础上,确定安全风险因素相对重要性程度,构建系统安全风险状态值计算模型,明确系统安全风险状态的运动轨迹,确定系统安全风险状态的判断类别,并以HZ高速MLP隧道K1+842~K1+870段导洞开挖及支护为例进行验证。结果表明:隧道施工塌方系统安全风险状态判断模型对MLP隧道安全风险状态的判断结果与实际施工相符合,对隧道施工塌方安全风险管理具有一定的实践价值。

Collapse accidents occur from time to time during tunnel construction,thus accurate and effective judgment of safety risk status of tunnel collapse is significant to control and prevent accidents.In this article,from the perspective of system mutation,based on the analysis and extraction of main safety risk factors,the relative importance of safety risk factors is determined,and the calculation model of system safety risk status value is constructed,the track of the system safety risk status is defined,the judgment category of the system safety risk status is determined,and the excavation and support of the tunnel in section K1+842~k1+870 of Hz high speed MLP tunnel are taken as an example to verify.The results show that the model of safety risk status judgment of tunnel collapse system is in accordance with the actual construction results of MLP tunnel safety risk status,and has certain practical value for the safety risk management of tunnel construction collapse.