Soil Conditioning in Shield Tunneling: Theory and Application

Dr. Shuying Wang is currently a distinguished professor in Shenzhen University. He received his Ph.D. degree in Civil Engineering from Missouri University of Science and Technology in 2011. He has also obtained the 18th Youth Science Award from the Fok Ying Tung Education Foundation. He is mainly engaged in the teaching and research on the mechanism of soil conditioning and efficient tunneling technology of the earth pressure balance shield, the interaction of geotechnical environment and tunneling boring machine and the control technology in a special environment, the mechanical behavior and safety control technology of tunnels in complicated conditions, and the treatment mechanism of wasted shield muck and resource reuse technology. He has presided over more than 30 projects of the National Natural Science Foundation of China and university-enterprise cooperation projects. He has won 7 First- and Second-Class Awards of Provincial and Ministerial Science and Technology Awards.Dr. Jiazheng Zhong obtained his Ph.D. degree in Civil Engineering from Central South University, Changsha, in 2023. He is currently a postdoctoral fellow in the University of Macau. His work focuses on the key technology of EPB shield tunnel construction and soil mechanics in conditioned muck. He has published more than 10 SCI or EI papers. He has won the first prize of Science and Technology Award of Municipal Engineering Association at Yunnan province, 2021 and the best poster award in 11th International Symposium of Geotechnical Aspects of Underground Construction in Soft Ground, 2024.Dr. Pengfei Liu obtained his Ph.D. degree in Civil Engineering from Central South University, Changsha in 2021. He is currently engaged in scientific research at the technology center of CCCC Second Harbor Engineering Company Ltd. He has won the second prize of the 2019 science and technology progress award of the Ministry of education of the People’s Republic of China. He was also selected into the 2021 Wuhan Youth Talents Program. His work focuses on the key technology of shield tunnel construction, prevention, and treatment of super-large diameter shield clogging.Dr. Xiangsheng Chen is a member of Chinese Academy of Engineering and Foreign Academician of Russian Academy Engineering. He is the distinguished professor in Shenzhen University and a famous expert in tunneling and underground engineering, urban rail transit engineering, intelligent geotechnical engineering, geotechnical engineering under extreme conditions, artificial frozen soil mechanics and artificially ground freezing technology, shaft construction engineering, and ground move controlling. He has presided over or participated in more than 60 scientific research projects. He has won 3 National Science and Technology Progress Awards, 12 provincial and ministerial level awards, and 4 Zhan Tianyou Engineering Awards.

• Introduction.- Variation of Atterberg Limits under the action of conditioning agents.- Workability of foam-conditioned soil for EPB shield tunneling.- The role of foam in improving the workability of conditioned soil: insights from DEM.- Permeability of foam-conditioned soil.