复杂地质条件下隧道围岩分级BQ修正法的应用

摘要

According to the shortcomings of BQ method in current highway tunnel design code,through the draw of initial geostress,underground water and main weak structural surface affect in complicated geological conditions to surrounding rock classification,and based on the BQ method to establish BQ surrounding rock classification method under complicated geological conditions,the practical application showed： the results coincidence rate of BQ correction method classification was better than traditional BQ method.%针对当前公路隧道设计规范中的BQ法的缺点,通过将复杂地质条件下的初始地应力、地下水以及主要软弱结构面影响引入围岩分级中,并以BQ法为基础建立复杂地质条件下的修正BQ围岩分级法,实践应用证明：BQ修正法分级结果吻合率比传统BQ法更好。