Abstract

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SUMMARY ON SPHERICAL WEATHERING BODY PROCESSING METHOD OF SHIELD TUNNEL

Dong Yang, Dongxia Liu


Spherical weathering body is a complex geological process in the subway shield construction in the southeast of China. Spherical weathering body is a difficult problem in the construction of shield tunnel. Through the introduction of the mechanism of the formation of globular weathering body, law and engineering characteristics of distribution, subway shield tunnel construction process in globular weathering body dealing with three kinds of methods are analyzed and discussed: direct tunneling method, the surface pre-treatment method and the hole processing method. A comparative analysis of the advantages and disadvantages of the three kinds of ways provides a reference for the similar constructions.