This book presents the results of novel hydro-mechanical laboratory experiments on several natural Boom clay samples, using simultaneously mineralogical, microscopic and mechanical techniques. It illustrates the research output through a series of tests, theories, back analyses, and numerical simulations. Based on these experimental results, it establishes a relatively complete theoretical system including elasto-plastic damage constitutive models, creep damage models and permeability sealing models. Further, it includes numerous reliable parameters obtained from back analysis on field stress, anisotropic permeability and in situ creep measurements of high acceptance di-electron spectrometer (HADES). Lastly, using numerical simulation it provides a long-term stability analysis of HADES underground facility.

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Weizhong CHEN works at Institute of Rock and Soil mechanics, Chinese Academy of Sciences since 1997 and engaged in postdoctoral research in Ecole Polytechnique, France, since 1997 to 1998. As new Century Talents Project national candidates, Yangtze fund Scholar, and Specially-appointed Professor of Shandong University, he is a responsible professor in State Key laboratory of Geomechanics and Geotechnical Engineering in China now. He is mainly engaged in the research of geotechnical engineering and underground engineering. The main hosted and participated research projects in present are: major international cooperation projects and key project of national natural science foundation "research on multi-field coupling behavior and long term strength characteristics of soft rock" (50720135906), key project of national natural science foundation "research on the stability and optimization of large underground caverns" (59939190), national natural science foundation of major research projectin western of China "research on the failure mechanism of structural rheological rock and anchor reliability under high field stress in western" (90510019), national natural science foundation"research on thermo-hydro-mechanical tests and theory of unsaturated fractured rock"(50539072), united fund of hydropower development of Yalong river"research on deformation and strength property of deep rock mass and structural plane, and also parameter assessment"(50579087), etc.
Hongdan YU works at Institute of Rock and Soil mechanics, Chinese Academy of Sciences since 2010. She is mainly engaged in the research of tunnel engineering, THM coupling effect and the long-term stability of underground engineering. The main hosted and participated research projects in present are: national natural science foundation of china "research on the long-term hydro-mechanical behaviour of mudstone" (51109207) and "Study on the hydro-mechanical behavior of mudstone under thermal effect"(51479190), majorinternational cooperation projects and key project of national natural science foundation "research on multi-field coupling behaviour and long term strength characteristics of soft rock" (50720135906), major international cooperation projects "Long-term creep behaviour & strength of Boom Clay" and "Research on the long term thermo-hydro-mechanical behaviour of Boom clay" , etc.
Xiangling LI works at EIG Euridice. As the scientific manager of EURIDICE, head of expertise group EURIDICE, she hosted and participated research projects in present are: European project SELFRAC "Fractures and Self-Healing within the Excavation Disturbed Zone In Clays" (2002-2004), European project RESEAL II "A large scale in situ demonstration for repository sealing in an argillaceous host rock -phase II"(2002-2006), European project TIMODAZ "Thermal Impact on the Damaged Zone around a Radioactive Waste Disposal in Clay Host Rocks" , European PRACLAY project: demonstration experiment of a disposal galleryfor high level and long lived radioactive waste(2006-2009), European project ESDRED "Engineering Studies and Demonstrations of Repository Designs" (2004-2007).