Discussions on Installation Opportunity of Secondary Lining for
Portal Section of Asymmetricallyloaded Doublearch Tunnel
ZHENG Jian-Zhong, Jiao-Chun-Sheng, Xu-An-Cheng
1. Anhui Provincial Communications Investment Group Co., Ltd2. School of Civil Engineering &|Architecture, Beijing Jiaotong University3. Air Force Engineering Design and Research Bureau