软围岩地质条件下山区高速公路隧道施工技术

Expressway Tunnel Construction Technology in Mountainous Area under Geological Conditions of Soft Surrounding Rocks

文章针对软围岩地质特征及形变特征,采用形变量、形变时长等参数对围岩的扰动范围进行预判,从理论模型和计算模型两个维度分析了在软围岩地质区域进行隧道施工所具备的特定条件和技术,并以广西桂柳高速公路软围岩隧道区域为工程实例,对软围岩地质条件下的隧道横断面设计、力学参数分析以及实际的施工过程进行了探讨。

Regarding the geological characteristics and deformation characteristics of soft surrounding rock,this article used the deformation value,deformation time and other parameters to predict the disturbance range of surrounding rock,then it analyzed the specific conditions and technologies required for the tunnel construction in soft surrounding-rock geological area from two dimensions of theoretical model and computational model,and,with the soft surrounding-rock tunnel area in Guangxi Guiliu Expressway as engineering example,it discussed the tunnel cross-section design,mechanics parameter analysis and actual construction process under soft surrounding-rock geological conditions.