Li Yanrong was born in Shanxi Province, China, in 1978. In 2000, he received a BEng in Hydrogeology and Engineering Geology from Taiyuan University of Technology, in 2003 an MSc in Geological Engineering from Chengdu University of Technology, and in 2009 a PhD degree in Engineering Geology from The University of Hong Kong. He is now a full professor of Engineering Geology at the Taiyuan University of Technology. His research interests include engineering properties of soils and rocks, tunneling engineering, and geohazard investigation and mitigation. He served as an Associate Editor of KSCE Journal of Civil Engineering from 2012 to 2014 and now serves as an Editorial Board Member of Bulletin of Engineering Geology and the Environment. He is a Chartered Geologist (CGeol) of the Geological Society of London, and a Professional Member (MIMMM) of The Institute of Materials Minerals and Mining.

"...an indispensible reference in graduate teaching and research and particularly in the practice of stabilizing dormant landslides. The author, Professor Li, has continued to work on the topic in past years and published most components of his research in a variety of journals. This book successfully combines these research outputs making it a one-stop reference on residual shear strength of granular and composite soils. "Prof. Adnan Aydin, Professor of Geology and Geological Engineering, University of Mississippi, USA.

• Introduction. Achievements in this field. Testing method. Artificial soil samples. Slip zone soils of the TGP landslides. Conclusions.

Li Yanrong was born in Shanxi Province, China, in 1978. In 2000, he received a BEng in Hydrogeology and Engineering Geology from Taiyuan University of Technology, in 2003 an MSc in Geological Engineering from Chengdu University of Technology, and in 2009 a PhD degree in Engineering Geology from The University of Hong Kong. He is now a full professor of Engineering Geology at the Taiyuan University of Technology. His research interests include engineering properties of soils and rocks, tunneling engineering, and geohazard investigation and mitigation. He served as an Associate Editor of KSCE Journal of Civil Engineering from 2012 to 2014 and now serves as an Editorial Board Member of Bulletin of Engineering Geology and the Environment. He is a Chartered Geologist (CGeol) of the Geological Society of London, and a Professional Member (MIMMM) of The Institute of Materials Minerals and Mining.

"...an indispensible reference in graduate teaching and research and particularly in the practice of stabilizing dormant landslides. The author, Professor Li, has continued to work on the topic in past years and published most components of his research in a variety of journals. This book successfully combines these research outputs making it a one-stop reference on residual shear strength of granular and composite soils. "Prof. Adnan Aydin, Professor of Geology and Geological Engineering, University of Mississippi, USA.

• Introduction. Achievements in this field. Testing method. Artificial soil samples. Slip zone soils of the TGP landslides. Conclusions.

Li Yanrong was born in Shanxi Province, China, in 1978. In 2000, he received a BEng in Hydrogeology and Engineering Geology from Taiyuan University of Technology, in 2003 an MSc in Geological Engineering from Chengdu University of Technology, and in 2009 a PhD degree in Engineering Geology from The University of Hong Kong. He is now a full professor of Engineering Geology at the Taiyuan University of Technology. His research interests include engineering properties of soils and rocks, tunneling engineering, and geohazard investigation and mitigation. He served as an Associate Editor of KSCE Journal of Civil Engineering from 2012 to 2014 and now serves as an Editorial Board Member of Bulletin of Engineering Geology and the Environment. He is a Chartered Geologist (CGeol) of the Geological Society of London, and a Professional Member (MIMMM) of The Institute of Materials Minerals and Mining.

"...an indispensible reference in graduate teaching and research and particularly in the practice of stabilizing dormant landslides. The author, Professor Li, has continued to work on the topic in past years and published most components of his research in a variety of journals. This book successfully combines these research outputs making it a one-stop reference on residual shear strength of granular and composite soils. "Prof. Adnan Aydin, Professor of Geology and Geological Engineering, University of Mississippi, USA.

• Introduction. Achievements in this field. Testing method. Artificial soil samples. Slip zone soils of the TGP landslides. Conclusions.