Siming Tian

By Shaoshuai Shi, Xiaokun Xie, Siming Tian, Zhijie Wen, Lin Bu, Zongqing Zhou, Shuguang Song and Ruijie Zhao

Due to the particularity of the tunnel project, it is difficult to find out the exact geological conditions of the tunnel body during the survey stage. Once it encounters unfavorable geological bodies such as faults, fracture zones, and karst, it will bring great challenges to the construction and will easily cause major problems, economic losses, and casualties. Therefore, it is necessary to carry out geological forecast work in the tunnel construction process, which is of great significance for tunnel safety construction and avoiding major disaster accident losses. This lecture mainly introduces the commonly used methods of geological forecast in tunnel construction, the design principles, and contents of geological forecast and combines typical cases to show the implementation process of comprehensive geological forecast. Finally, the development direction of geological forecast theory, method, and technology is carried out. Prospects provide a useful reference for promoting the development of geological forecast of tunnels.

Part of the book: Tunnel Engineering

By Siming Tian, Yang Xue, Zhenyan Tian, Shaoshuai Shi, Weidong Guo, Wei Wang and Ruijie Zhao

Over the past 40 years of reform and opening up, China’s railway tunnel construction industry has made great progress. The completed railway tunnels account for nearly 90% of the total length of China’s railway tunnels. At present, China’s tunnel construction technology is relatively advanced, but with the development of tunnel engineering in the southwest, railway tunnel construction is facing a series of major and complex geological problems. This chapter mainly introduces the tunnel design theory and method, support structure system, construction technology, and equipment under complex geological conditions. In addition to the technical problems and challenges faced by the current railway tunnel engineering, this chapter puts forward the development of active support collaborative control concept and technology, digital survey and design, intelligent construction, and intelligent operation and maintenance, so as to provide a useful reference for promoting the development of tunnel engineering.

Part of the book: Advances in Structural Integrity and Failure