Based on the theory of geomechanics and using geologic analytical methods, analyed the fault characteristics, mechanical properties, displacement mode, tectonic system, structural pattern, activity mode of stress, tectonic activity, and tectonic evolution of the area of the Xiamen submarine tunnel, the strike NWW 295°, which is the main unfavorable geological structure that affects the safety of the tunnel construction; the macro geological prediction concludes that weathered troughs and groundwater-rich zones formed by its larger-scale fault fracture zones are the main unfavorable geological bodies provides a basis for preventing the geo-logical hazards in the tunnel construction.
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