摘要
根据隧址区工程地质特征,建立了长冲隧道进口段的有限元模型;模拟了台阶分部法和CD工法开挖隧道的过程,通过对围岩的位移和应力特征、屈服接近度和支护结构受力特征的分析,从施工工序和施工力学角度对两种开挖方法进行了比较,结果表明设计推荐采用的CD工法较台阶分部法没有明显的优势。
Based on engineering geological feature of tunnel setting, a finite element of entrance of Changchong tunnel is established, which can simulate the construction process under the bench method and CD method. Displacement, stress, characteristics of yield degree of surrounding rock and the force of supports structure are analyzed. Construction process and stress of these two methods are compared so as to optimize the practical construction scheme. The result indicates that bench method is better than CD method.
出处
《重庆交通大学学报（自然科学版）》
CAS
2008年第2期225-227,289,共4页
Journal of Chongqing Jiaotong University(Natural Science)
