1、河南理工大学本科毕业设计（论文） 外文文献及译文 1 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 growi
2、ng demand, thus the underground works of the study of a rapid development. In a large 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 excavati
3、on, 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 others problems. Tunnels an
4、d underground caverns, and focusing on the core issues with the above practice and research, in different periods, People of different theories and gradually established a system of different theories, Each system includes theory and resolve (or are studying the resolution) from the works of underst
5、anding (concept), mechanics, engineering measures to the construction methods (Technology), a series of engineering problems. A theory 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.
6、 need shoring structure to be supported. Thus, the role of the supporting structure of the rock load is within a certain range may be due to relaxation and collapse of rock gravity. This is a traditional theory, and their representative is Taishaji and Principes and others. It works similar to the s
7、urface issues of the thinking is still widely used to. Another theory of the 20th century made the 1950s the modern theory of timbering or rock for the theory. Its core content is : rock stability is clearly bearing rock to their own self-stability : unstable rock loss of stability is a process, and
8、 if this process in providing the 河南理工大学本科毕业设计（论文） 外文文献及译文 2 necessary help or restrictions will still be able to enter the rock steady state. This theoretical system of representative characters Labuxiweici, Miller-Feiqieer, Fenner - Daluobo and Kashitenai others. This is a more modern theory, it i
9、s already out of the ground works to consider the ideas, and underground works closer to reality, the past 50 years has been widely accepted and applied. demonstrated broad development prospects. Can be seen from the above, the former theory more attention to the findings and the results of treatmen
10、t : The latter theory is even more attention to the process and the control of the process, right from the rock for the full utilization of capacity. Given this distinction, which both theory and methods in the process, each with different performance characteristics. NATM theory is rock for the tun
11、nel engineering practice in the representation method. 2. NATM NATM that the new Austrian Tunneling Method short the original is in New Austrian Tunneling Method, referred to as the NATM. France said it convergence bound or some countries alleged to observe the dynamic design and construction of the
12、 basic principles. NATM concept of filibustering Xiweici Austria scholars in the 20th century, Professor age of 50. It was based on the experience of both the tunnel and rock mechanics theory, will bolt and shotcrete combination as a major means of supporting a construction method, Austria, Sweden,
13、Italy and other countries, many practical and theoretical study in the 1960s and patented officially named. Following this approach in Western Europe, Scandinavia, the United States and Japan and many other underground works with a very rapid development, have become modern tunnels new technologies
14、landmark. Nearly 40 years ago, the railway sector through research, design, construction combining, in many construction of the tunnel, according to their own characteristics successfully applied a new Austrian law, made more experience, have accumulated large amounts of data, This is the applicatio
15、n stage. However, in the road sector NATM of only 50%. Currently, the New Austrian Tunneling Method almost become weak and broken rock section of a tunnel construction method, technical and economic benefits are clear. NATM the basic points can be summarized as follows : （ 1） . Rock tunnel structure is the main loading unit, the construction must fully protect the rock, it minimize the disturbance to avoid excessive damage to the intensity of rock. To
