Abstract:

Risks are summarized and risk control technologies are proposed for shield tunneling in complex geological conditions as encountered during the construction of Metro lines in Guangzhou, which include fractured zones, residual soils, soft strata, karst caves, "red strata" and "uppersoft and lowerhard" strata. The study results can provide reference and guidance for Metro construction in the future.

Key words: fractured zone, residual soil, deep weathered slot, red strata, risk of shield tunneling, risk control