大断面黄土隧道基底围岩压力研究

摘要

黄土隧道基底区域围岩压力确定直接关系到隧道基底承载力是否满足结构稳定及运营安全的要求。以客专浅埋黄土双线大断面隧道为研究对象，分别采用普氏理论、太沙基理论、谢家烋理论、比尔鲍曼理论、卡柯公式、全土柱法、岩柱法、规范推荐方法、有限元法与实测值进行对比分析，推荐大断面黄土浅埋隧道采用太沙基理论与有限元方法相结合的方法计算确定基底围岩压力。%The value of surrounding rock pressure in foundation base zone of loess tunnel has a direct influ -ence on whether the tunnel base bearing capacity meet the requirement of structural stability and operation safe -ty.This article takes the loess tunnel as the research object , uses Platts theory, Terzaghi theory, Xie Jiaxiu the-ory , Bill bauman theory , Caquot theory , soil column method , rock pillars method , code method , and finite ele-ment method to compare and analyze measured values , and recommends that losee tunnel should use Terzaghi theory and finite element method to calculate pressure of surrounding rock .