This volume contains a compilation of studies regarding novel technology of underground space development, behavior analysis and modelling of soils and underground infrastructure from the 6th GeoChina International Conference held in Nanchang, China from July 19 to 21, 2021. The scope of the studies covers both methodological and pragmatic solutions to critical issues, including soil arching and invert heaving, penetration resistance of mono-bucket foundations in silty soil, inception of debris avalanches, and novel infrastructure survey methods based on point cloud and image analysis. It is anticipated that this updated knowledge will lead to more resilient design, expedited inspection, timely maintenance and rehabilitation of underground infrastructure, and will be beneficial to both researchers and practitioners in the field.

Autorentext
J. James Yang is an Associate Professor of Civil Engineering in the College of Engineering at University of Georgia. He received his Ph.D. degree from the University of South Florida. He is a professionally registered transportation engineer with a research interest in sustainable and resilient infrastructure systems, smart mobility systems, statistical and econometric methods, artificialintelligence and machine learning methods and applications. His work has generated several patents and over 40publications in refereed journals and conference proceedings. He currently sits on the Editorial Board of ASCE Journal of Infrastructure Systems,the TRB AED50 committee: Artificial Intelligence andAdvanced Computing Applications,and the Transportation Demand Management Coordinating Committee (TDM-CC) of AtlantaRegional Commission. 
 Dr.Wen-ChiehCheng is a Professor of Geotechnical Engineering in the School of Civil Engineering at Xi'an University of Architecture and Technology. He received his Ph.D. degree from the National Taipei University of Technology. He is a professionally registered civilengineer with a research interest in sustainable and resilient infrastructure systems, soil contamination and remediation strategies, trenchlessmethods, artificial intelligence and machine learning methods and applications. His work has generated several international patents and over 70publications in refereed journals and conference proceedings. He currently sits on the Editorial Board of ICE Geotechnical Research journal,and the ISSMGETC213 committee: Scour and Erosion.
Dr. Shuying Wang is a professor of Tunnel Engineering in School of Civil Engineering, Central South University. He obtained his B.E. and M.S. degreesfrom Central South University respectively in 2005 and 2007 and then earned the Ph.D. degree in Missouri University of Science and Technology (Rolla, USA) in 2011. His research interests includeConditioning Mechanism and Handling Technology of Special Soils, Tunneling Mechanism and Safety Control Technology. He has been hosting about 30 research projects, one of which is National Natural Science Foundation-Outstanding Youth Foundation. So far, more than 70 papers have been published, and 14 patents have been authorized. Additionally, he has gotten one monograph and one textbook pressed in Springer. Dr. Wang won the second prize of science and technology progress of Ministry of Education in 2019 (in the first place) and that of Hunan Province in 2017 (in the third place). He serves as an editorial board member for three journals such as Journal of Testing and Evaluation (ASTM), Chinese Journal of Highway, etc. 

Inhalt

Chapter 1. Inception of Debris Avalanches: a Material Point Method Modelling.- Chapter 2. Research on the Calculation of Segment Floating Considering the Action Degree of Soil Arching Effect.- Chapter 3. Cause Analysis and Treatment Measures for Invert Heaving Disease of Railway Tunnel in Slightly Inclined Layered Rock Mass.- Chapter 4. A Semi-analytical Model for Compaction-grouted Soil Nails.- Chapter 5. Buckling Analysis of Mono-bucket Foundation with Compartments during Suction Installation.- Chapter 6. PCPT and SPT as Complementary Tests for the Formulation of Geotechnical Design Profiles.- Chapter 7. Research on the Rapid Detection Technology of Tunnel Lining Cracks and Accuracy Calibration based on Infrared Image.- Chapter 8. Research on the Construction of 3D Laser Scanning Tunnel Point Cloud based on B-spline Interpolation