某隧道突泥涌水事故的处理措施及其效果评价

Treatment Measures and Effect Evaluation of Mud Bursting and Water Gushing Accident in a Tunnel

该文以大兴乡隧道突泥涌水事故为工程背景,开展其事故处理措施及处理效果评价。即先结合事故现有条件,制定出合理的处理措施;再以支持向量机为基础,利用多种算法优化其模型参数,构建出隧道变形组合预测模型,以评价处理措施的有效性。实例分析表明:本次事故采用多种处理手段分步实施处理,制定了"超前支护+CRD法开挖"处理措施,有效保证了施工安全,且通过隧道变形的组合预测研究,得出各验证断面预测的变形值虽有所增加,但增加速率较小,趋于稳定,且变形值均小于预留变形量,验证了前述处理措施的有效性。

This paper takes the mud bursting and water gushing accident in Daxing Village Tunnel as the engineering background, the accident treatment measures research and treatment effect evaluation are carried out. Firstly, combining with the existing conditions of the accident, the reasonable treatment measures are formulated;Then, based on the support vector machine, the model parameters are optimized by various algorithms, and the combined prediction model of tunnel deformation is constructed to evaluate the effectiveness of the treatment measures. The case analysis shows that: The accident is handled step by step by using a variety of treatment methods, and the treatment measures of "advance support + CRD excavation" are formulated to effectively ensure the construction safety. And through the combined prediction research of tunnel deformation, the value of deforonation prediction of each verification section increases, but the rate is low, and it tends to be stable. And the deformation values are all less than the reserved deformation, which verifies the effectiveness of the above treatment measures.