基于TSP的隧道施工风险评估

Risk Assessment of Tunnel Construction Based on Tunnel Seismic Prediction

基于地质资料和工程经验的高速铁路隧道施工风险评估具有较大的主观性影响。为了提高施工风险评估的精确性和可靠性,从而降低较大的主观性影响,以邓家湾高速铁路隧道为依托,采用隧道超前地质预报TSP303地震波法对隧道施工段进行超前探测预报,对TSP系统采集的数据进行整理分析,同时用模糊综合评价理论建立风险因素判断矩阵和确定风险的权重及隶属度,对隧道施工风险进行评估。结果表明:相比于基于地质资料和工程经验的主观评估法进行的隧道施工风险评估,基于TSP的隧道施工风险评估与工程实际更加契合,更能准确反映掌子面前方围岩情况,评估结果可作为评估铁路隧道的有效模型。

Risk assessment of railway tunnels based on geological data and engineering experience has a large subjective influence. In order to improve the accuracy and reliability of the construction risk assessment and reduce the subjective influence,the TSP 303 seismic wave method is used to forecast the tunnel construction section,and the data collected by the TSP system are analyzed based on the Dengjiawan railway tunnel. The fuzzy comprehensive evaluation theory is used to establish the risk factor judgment matrix and determine the weight and membership degree of the risk based on the advanced tunnel geological forecast TSP（ Tunnel Seismic Prediction）. The results show that the tunnel construction risk assessment based on TSP is more suitable for engineering practice and more accurate in reflecting the front situation of the tunnel face,and the evaluation results can be used as an effective model to evaluate the railway tunnel.