上方长距离基坑开挖引起的共线隧道变形研究

陈拴, 吴怀娜, 陈仁朋, 沈水龙, 刘源

Deformation of a Collinear Tunnel Induced by Overlying Long-Distance Excavation

CHEN Shuan, WU Huaina, CHEN Renpeng, SHEN Shuilong, LIU Yuan

表2 土层物理力学参数

Tab.2 Physical and mechanical parameters of soil layers

参数 γs/(kN·m-3) e0 w0/% c0/kPa φ0/(°) Es0/MPa 素填土 17.5 — — 0 12 — 粗砂 20.0 — — 0 30 30 砾质黏土 17.7 1.004 33.3 25 23.5 28 全风化花岗岩 19.5 0.865 27.6 30 28 70