摘要
片岩隧道围岩压力状态评价对隧道稳定性分析具有重要意义。首先,通过分析片岩隧道围岩压力影响因素(初始地应力、岩性与地下水条件),概要地总结了现有围岩压力计算方法,在此基础上,提出适用于片岩隧道初始围岩压力的计算方法,并与实测值进行比较,分析计算值与实测值出现差距的原因,进而对围岩压力计算方法进行修正,建立了适用于片岩隧道的围岩压力评价方法,并在油坊坪隧道中得到应用。
The evaluation of stress state of surrounding rock schist tunnel has an important significance for tunnel stability analysis. First,through the analysis on the influence factors of schist tunnel surrounding rock pressure( initial geostress,rock and groundwater conditions),the existing surrounding rock pressure calculation method is briefly summarized. Based on this proposed schist initial tunnel surrounding rock pressure calculation method,and compared with the measured value,the deviation causes between calculated value and measured value is analyzed. The calculated method for rock schist is modified to establish the evaluation method suitable for schist tunnel surrounding rock pressure,and it has been applied in Youfangping tunnel.
出处
《施工技术》
CAS
北大核心
2015年第S2期369-372,共4页
Construction Technology
关键词
隧道工程
片岩
围岩压力
评价方法
tunnels
schist
surrounding rock pressure
evaluation
