Tunneling in soft ground, ground conditioning and modification techniques proceedings of the 5th GeoChina International Conference 2018 – civil infrastructures confronting severe weathers and climate changes: from failure to sustainability, held on July 23 to 25, 2018 in HangZhou, China - Cheng, Wen-Chieh; Yang, Junsheng; Wang, Jinfeng (Springer, 2019)