隧道外文文献与翻译

附录二 外文参考文献及翻译NATM tunnel design principle in the construction of major and Construction TechnologyW.

附录二外文参考文献及翻译 NATM tunnel design principle in the construction of major and Construction Technology W.Broere I.The NATM Design Principle 1.Tunnel design and construction of two major theoretical and development process Since the 20th century, human space on the ground floor of the growing demand, thus the underground works of the study of arapid development. In alarge number of underground engineering practice, it is generally recognized that the tunnel and underground cavern project, the core of the problem, all up in the excavation and retaining two key processes. How excavation, it will be more conducive to the stability and cavern facilitate support :For more support, Supporting how they can more effectively ensure stability and facilitate the cavern excavation. This is the tunnels and underground works two promote each other and check each other's problems. Tunnels and underground caverns, and focusing on the core issues with the above practice and research, in different periods, People of different theories and gradually established asystem of different theories, Each system includes theory and resolve (or are studying the resolution) from the works of understanding (concept), mechanics, engineering measures to the construction methods (Technology), aseries of engineering problems. Atheory of the 20th century the 1920s the traditional "load relaxation theory." Its core content is :a stable rock self-stability, no load :unstable rock may have collapsed. need shoring structure to be supported. Thus, the role of the supporting structure of the rock load is within acertain range may be due to relaxation and collapse of rock gravity. This is atraditional theory, and their representative is