The pavement in the tunnel is a composite pavement structure. Its form is: asphalt concrete is used as the surface layer, 4cm thick Superpave-13 fine-grained high-performance modified asphalt concrete, and 6cm thick superpave-20 medium-sized high-performance modified asphalt concrete is used as the middle surface layer. The design flexural tensile strength of the 24cm thick cement concrete panel is not less than 5.0MPa For the base course, C20 concrete with a thickness of 18cm is used; for the road surface of the vehicular cross hole, the mud concrete surface course with a thickness of 20cm is used, and the C20 concrete base course with a thickness of 15cm is set below. C20 concrete with thickness of 20cm is used for the pavement of pedestrian crossing tunnel.<br>
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