Risk Source Analysis and Grade Division of Subway Tunnel Undercrossing the Existing Highway Subjected to the Complicated Geological Environment

Abstract

According to the characteristics of the subway tunnel method construction and the special operation requirements of the highway, many risks of undercrossing engineering should be required urgent attention. So, based on one subway tunnel undercrossing the existing highway, the possible sources of risk are defined and analyzed. Furthermore, according to the evaluation method of fuzzy mathematics, for soft and hard strata complicated geological environment, the assessment and grading of risk sources are investigated during the subway tunnel undercrossing the existing highway. Those results are supporting the important suggests for constructors and designers