动静荷载下层状围岩隧道应力集中分布特征

杨玉民,蒋楠,姚颖康,周传波,蒙贤忠,赵茉溪

Characteristic of stress concentration distribution in layered rock of tunnel under dynamic and static load

Yumin YANG,Nan JIANG,Yingkang YAO,Chuanbo ZHOU,Xianzhong MENG,Moxi ZHAO

表 2 层状岩体隧道模型的数值计算工况

Tab.2 Numerical calculation condition of tunnel model of layered rock

工况 Q1/MPa Q2/MPa θ/(°) I 0.8 4.0 45 II-1 0.6 4.5 45 II-2 0.8 4.5 45 II-3 1.0 4.5 45 II-4 1.2 4.5 45 II-5 1.4 4.5 45 III-1 0.8 0.5 45 III-2 0.8 1.5 45 III-3 0.8 2.5 45 III-4 0.8 3.5 45 III-5 0.8 4.5 45 IV-1 0.8 4.0 0 IV-2 0.8 4.0 15 IV-3 0.8 4.0 45 IV-4 0.8 4.0 75 IV-5 0.8 4.0 90