Key Technologies for Tunnel Construction under Complex Geological and Environmental Conditions - Böcker

This book focuses on some technical problems encountered in shield tunneling in hard–soft uneven stratum and extremely soft stratum, based on the recent shield tunneling engineering practice, and summarizes the achievements of shield tunneling in view of the technical problems from an overall and objective perspective.

This book focuses on some technical problems encountered in shield tunneling in hard–soft uneven stratum and extremely soft stratum, based on the recent shield tunneling engineering practice, and summarizes the achievements of shield tunneling in view of the technical problems from an overall and objective perspective.

This book proposes the tool change methods for the excessive tool wear in the construction rules of shield tunnel construction in China. From the perspective of shield tunneling, atmospheric pressure tool change, pressure opening and tool change, and other special techniques, the tool change technologies are proposed.

This book proposes the tool change methods for the excessive tool wear in the construction rules of shield tunnel construction in China. From the perspective of shield tunneling, atmospheric pressure tool change, pressure opening and tool change, and other special techniques, the tool change technologies are proposed.

The basic principles, scope of application, construction technology and technical points of the key technologies such as the origin and arrival of the shield, crossing the shallow soil in the middle of the river, crossing the guard, and changing the knife and opening the knife are clarified.

The basic principles, scope of application, construction technology and technical points of the key technologies such as the origin and arrival of the shield, crossing the shallow soil in the middle of the river, crossing the guard, and changing the knife and opening the knife are clarified.

Chapter 3 to Chapter 7 systematically elaborate on the 3D seismic techniques, 3D detection technologies for water content in tunnel surrounding rocks, 3D detection technologies for side/back slope, 3D detection technologies for shield tunneling, and 3D detection technologies for collapse treatment of tunnel construction.

Chapter 3 to Chapter 7 systematically elaborate on the 3D seismic techniques, 3D detection technologies for water content in tunnel surrounding rocks, 3D detection technologies for side/back slope, 3D detection technologies for shield tunneling, and 3D detection technologies for collapse treatment of tunnel construction.

Based on the analysis results and the engineering experiences from the constructions and operations of metro tunnels in Shanghai Area in the past twenty years, the deformation law of tunnel was summarized and several control measures for external constructions were put forward to help ensure the structural safety of the tunnels.

This book mainly focuses on two topics:• The early warning system of the metro structural safety, which includes the monitoring system and inspection system;• The treatment technology for the tunnel disease.In the discussion of the early warning system, several advanced sensing technologies were introduced, which could easily and rapidly detect the potential diseases of the tunnel lining structure. Meanwhile, in the discussion of the treatment technology for the structural problems, several reinforcement measures were introduced in details and corresponding application cases in East China were put out to verify the effects of the measures. From this book, practitioners in the maintenance and repair of metro structures could learn the deformation mechanisms and help address the practical issues they encounter.

Based on the construction of Nanjing Weisan Road Yangtze River Tunnel, this book comprehensively introduces the new technology of large-diameter shield tunnel construction crossing circular air shafts.